Researcher Profile and Settings

Master

Affiliation (Master)

• Institute for Catalysis　Catalytic Reaction Research Division

Affiliation (Master)

• Institute for Catalysis　Catalytic Reaction Research Division

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Profile and Settings

Degree

• Doctor of Science（Tokyo Institute of Technology）

Profile and Settings

• Name (Japanese)

  Kiyotaka

• Name (Kana)

  Nakajima

• Name

  200901011959622892

Alternate Names

https://www.cat.hokudai.ac.jp/nakajima/
https://www.cat.hokudai.ac.jp/nakajima/en/

Achievement

Research Interests

• Biomass conversion   Solid acid and base catalyst   solid acid catalyst   Organic-inorganic hybrid material   porous material   

Research Areas

• Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Catalytic processes and resource chemistry

Research Experience

• 2022/04 - Today Hokkaido University Institute for Catalysis Professor
• 2024/04 - 2025/03 Nagoya University School of Science, Department of Chemistry Visiting professor
• 2015/10 - 2022/03 Hokkaido University Institute for Catalysis Associate Professor
• 2018/04 - 2019/03 Sebelas Maret University Teacher training and education faculity Visiting professor
• 2018/04 - 2019/03 Nagoya University Graduate School of Science, Department of Physics Visiting associate professor
• 2012/10 - 2016/03 科学技術振興機構 「二酸化炭素資源化」領域 さきがけ研究者
• 2015/04 - 2015/09 Hokkaido University Catalysis Research Center Associate Professor
• 2009/02 - 2015/03 Tokyo Institute of Technology Materials and Structures Laboratory
• 2007/04 - 2011/03 神奈川科学技術アカデミー 原「エコ固体酸」プロジェクト 非常勤研究員
• 2007/04 - 2009/01 Tokyo Institute of Technology Materials and Structures Laboratory Assistant professor
• 2006/04 - 2007/03 Toyota Central R&D Labs., Inc.

Education

• 2003/04 - 2006/03  Tokyo Institute of Technology
• 2001/04 - 2003/03  Tokyo Institute of Technology  Interdisciplinary Graduate School of Science and Engineering  Department of Electronic Chemistry
• 1997/04 - 2001/03  Meiji University  School of Science and Technology

Committee Memberships

• 2023/05 -2024/04   Catalysis Society of Japan   Management Committee
• 2021/10 -2022/08   Post Symposium of TOCAT9, 60th Aurora seminar, & The 9th International Symposium of Institute for Catalysis   An organizing committee member
• 2021/04 -2022/07   The 9th Tokyo Conference on Advanced Catalytic Science & Technology (TOCAT9)   A committee member

Awards

• 2023/06 物質・デバイス領域共同研究拠点 物質・デバイス共同研究賞
   

  受賞者: 中島清隆;加藤英樹
• 2017/01 国立大学法人北海道大学 Hokkaido University President's Award for Outstanding Research, Encouraging Award
   

  受賞者: Nakajima Kiyotaka
• 2015/03 The Chemical Society of Japan Young Scholar Lecture Award of CSJ
   Lactic acid production from glycerol in water over titania with water-tolerant Lewis acid sites 

  受賞者: Nakajima Kiyotaka
• 2015/03 Catalysis Society of Japan Development of solid Lewis acid catalysts for sugar conversion in water
   水中で機能する固体ルイス酸の開発と糖変換反応への応用 

  受賞者: Nakajima Kiyotaka
• 2014/11 Tokyo Institute of Technology Award for innovative research
   新規な水中機能触媒を用いた植物由来炭化水素からの必須化学品原料の環境低負荷合成 

  受賞者: Nakajima Kiyotaka
• 2012/05 The Japan Petroleum Institute The Japan Petroleum Institute Award for Encouragement of Research and Development
   Development of water-compatible solid acid catalysts for sugar conversion 

  受賞者: Nakajima Kiyotaka

Published Papers

• Overview of intentional formation of paired heteroatom sites in zeolite frameworks

  Mizuho Yabushita, Ryota Osuga, Yoshinao Nakagawa, Satoshi Suganuma, Kiyotaka Nakajima, Keiichi Tomishige

  CrystEngComm 26 (33) 4405 - 4417 2024/08 [Refereed][Not invited]
   

  Intentional placement of two heteroatoms in close proximity in zeolite frameworks is an important task for developing fine-tuned catalysts and ion exchangers and has been achieved via three different strategies.
• Low-Temperature N-Allylation of Allylic Alcohols via Synergistic Pd/Cu Catalysis: A Silica-Supported Dual-Metal-Complex Strategy

  Shunichi Sakai, Shingo Hasegawa, Siming Ding, Ryota Osuga, Kiyotaka Nakajima, Shinji Tanaka, Wang-Jae Chun, Ken Motokura

  ACS Catalysis 14 (7) 4835 - 4846 2155-5435 2024/03/15 [Refereed]
  
• Formation of paired Ga sites in CHA-type zeolite frameworks via a transcription-induced method

  Takumi Kaneko, Mizuho Yabushita, Ryota Osuga, Yugo Sawada, Kei Sato, Ben Liu, Yoshinao Nakagawa, Kiyotaka Nakajima, Keiichi Tomishige

  Chemical Communications 60 (27) 3681 - 3684 1359-7345 2024/03 [Refereed][Invited]
   

  Paired Ga sites represented by the Ga–O–Si–O–Ga sequence were firstly formed intentionally in CHA-type zeolite frameworks via the transcription of pre-formed paired Ga species in a Ga-rich amorphous silica–gallia under seed-assisted hydrothermal conditions. Such paired Ga sites behaved as ion-exchange sites for capturing divalent cation, Co2+.
• Oxidative Esterification of Acetal-Protected 5-Hydroxymethylfurfural to Dimethyl Furan-2,5-dicarboxylate with High Recovery of Protecting Agent

  Jan J. Wiesfeld, Ryota Osuga, Satoshi Suganuma, Takayuki Aoshima, Emiel J.M. Hensen, Kiyotaka Nakajima

  ACS Sustainable Chemistry & Engineering 12 (1) 450 - 458 2168-0485 2023/12/26 [Refereed][Not invited]
   

  Polyalkylene furanoates are important prospective biobased substitutes for fossil-based terephthalates. Furanoate monomers can be obtained from the bioplatform 5-hydroxymethylfurfural (HMF), but practical applications are hindered due to its rapid oligomerization, which requires working in dilute solutions. Herein, we demonstrate a protection strategy based on acetalization of the reactive formyl group with propane-1,3-diol (PDO) to suppress oligomerization reactions. Following a stepwise approach, PDO-acetalized HMF (PD-HMF) was oxidatively esterified in a methanolic 20 wt % solution to mainly PDO-acetalized methyl-5-formylfuran-2-carboxylate (PD-MFFC) in a 91.0% yield in 6 h at 100 °C under 8 MPa air using a Au/CeO2 catalyst. The use of base could be decreased to 7.5 mol % Na2CO3 with respect to PD-HMF, which is a considerable advance over the state of the art. The loss of PDO due to oxidative degradation under these improved conditions was limited to 1.4%, implying that the protecting agent could be reused, which benefits the economic viability of the process. The PD-MFFC product stream, which contains a small amount of MeOH-acetalized MFFC, could be easily deprotected to obtain MFFC in a 99.1% yield with a PDO recovery degree of 93.1%. MFFC could readily be converted to dimethyl furan-2,5-dicarboxylate (MFDC) in a 96.6% yield via base-free oxidative esterification of MFFC in a methanolic 20 wt % solution in 2 h at 100 °C under 6 MPa air. The proposed stepwise approach combines high productivity (overall MFDC yield >90%) and excellent PDO recovery (>91%) using concentrated PD-HMF solutions (20 wt %).
• A Protection Strategy for High‐yield Synthesis of Dimethyl Furan2,5‐dicarboxylate from 5‐Hydroxymethylfurfural Using Methanol as an Acetalizing Agent

  Nirupama Sheet, Ryota Osuga, Nao Arai, Jan J. Wiesfeld, Satoshi Suganuma, Takayuki Aoshima, Atsushi Fukuoka, Emiel J.M. Hensen, Kiyotaka Nakajima

  ChemCatChem 16 (4) e202301259  1867-3880 2023/12/12 [Refereed][Not invited]
   

  Developing efficient catalytic processes for obtaining biobased monomers for plastics can significantly contributes to a more sustainable economy. The biomass‐derived and chemical platform 5‐hydroxymethylfurfural (HMF) can be converted to various key intermediates, which is often hampered by side reactions due to the reactive nature of the formyl group in HMF. Here, we present a stepwise approach involving a protecting agent to obtain dimethyl furan‐2,5‐dicarboxylate (MFDC), which is a monomer for polyalkylene furanoates, a new class of biobased polyesters. Methanol is used as a solvent, reactant, and protecting agent for HMF’s formyl group. In the first step, the oxidative esterification of the hydroxymethyl group to methyl carboxylate in HMF‐dimethylacetal catalyzed by Au/CeO2 affords methyl 5‐formylfuran‐2‐carboxylate dimethylacetal (MFFCacetal) in high yields (> 90%) from concentrated methanolic solutions (~ 20 wt%). Without protecting agent, a mixture of methyl‐5hydroxymethylfuran‐2‐carboxylate (MHMFC), MFDC, and humin byproduct was obtained. The deprotection of MFFC‐acetal in the second step proceeded efficiently in acetone with Amberlyst‐15, affording MFFC in a >90% yield. In the final step, oxidative esterification of MFFC in methanol (10 wt%) afforded MFDC in a 93% yield using Au/CeO2. The acetal protection strategy with methanol offers an efficient route toward MFDC in two oxidative esterification steps.
• Computational survey of humin formation from 5-(hydroxymethyl)furfural under basic conditions

  Keisuke Tashiro, Masato Kobayashi, Kiyotaka Nakajima, Tetsuya Taketsugu

  RSC Advances 13 (24) 16293 - 16299 2023/05 [Refereed][Not invited]
   

  By repeatedly utilizing the MC-AFIR method, a comprehensive reaction-path search for the oligomerization of HMF was conducted to clarify the mechanism of humin formation in the oxidation of HMF to FDCA.
• Acid–Base Property of Tetragonal YNbO₄ with Phosphate Groups and Its Catalysis for the Dehydration of Glucose to 5‐Hydroxymethylfurfural

  Daniele Padovan, Koichiro Endo, Takeshi Matsumoto, Toshiyuki Yokoi, Atsushi Fukuoka, Hideki Kato, Kiyotaka Nakajima

  Small Structures 2200224 - 2200224 2688-4062 2022/11/16 [Refereed][Invited]
  
• Selective Hydrogenation of L‐proline to L‐prolinol over Al₂O₃‐supported Pt‐MoO_x Catalyst

  Chinami Kaku, Satoshi Suganuma, Kiyotaka Nakajima, Etsushi Tsuji, Naonobu Katada

  ChemCatChem 1867-3880 2022/07/29
• Ethylene oxidation activity of silica-supported platinum catalysts for the preservation of perishables

  Takeshi Mori, Tatsuhiro Shigyo, Takafumi Nomura, Yuki Osanai, Kiyotaka Nakajima, Atsushi Fukuoka

  Catalysis Science & Technology 2044-4753 2022/04 [Refereed][Not invited]
   

  Silica-supported platinum catalysts can remove trace amounts of ethylene from perishables and extend their shelf-lives.
• A Catalytic Strategy for Selective Production of 5‐Formylfuran‐2‐carboxylic Acid and Furan‐2,5‐dicarboxylic Acid

  Jan J. Wiesfeld, Miyuki Asakawa, Takayuki Aoshima, Atsushi Fukuoka, Emiel J.M. Hensen, Kiyotaka Nakajima

  ChemCatChem 1867-3880 2022/03/28 [Refereed]
   

  A novel catalytic strategy involving protective chemistry is presented for the selective production of 5-formylfuran-2-carboxylic acid (FFCA) and furan-2,5-dicarboxylic acid (FDCA) from concentrated 5-hydroxymethylfurfural (HMF) solutions. By protecting the reactive formyl group of HMF by acetalization with 1,3-propanediol (PDO), degradation and premature oxidation of HMF is suppressed. A hydroxyapatite-supported Au catalyst can selectively oxidize HMF-acetal in a 10 wt % solution to FFCA-acetal in 94 % yield in 2 hours at 373 K under 0.5 MPa of O-2. Deprotection of FFCA-acetal by mineral acids affords FFCA in 98 % yield and recovers nearly all PDO. FFCA in a 20 wt % solution can be oxidized to FDCA in 95 % yield under similar reaction conditions. The presented chemistry contributes to the development of novel manufacturing routes of prospective biobased monomer precursors using protecting agents.
• Mesoporous silica-supported rhodium complexes alongside organic functional groups for catalysing the 1,4-addition reaction of arylboronic acid in water

  Yuanyuan Kong, Siming Ding, Koichiro Endo, Kiyotaka Nakajima, Yuichi Manaka, Wang-Jae Chun, Ikuyoshi Tomita, Ken Motokura

  Green Chemistry 24 (8) 3269 - 3276 1463-9262 2022/03/24 [Refereed][Not invited]
   

  Mesoporous silica-supported Rh complexes alongside organic functional groups enable 1,4-addition reaction in water.
• Protection Strategies for the Conversion of Biobased Furanics to Chemical Building Blocks

  Ferdy J. A. G. Coumans, Zhanna Overchenko, Jan J. Wiesfeld, Nikolay Kosinov, Kiyotaka Nakajima, Emiel J. M. Hensen

  ACS Sustainable Chemistry & Engineering American Chemical Society (ACS) 10 (10) 3116 - 3130 2168-0485 2022/03/01 [Refereed][Not invited]
  
• Mechanical Force Induced Formation of Extrinsic Micropores in Coordination Polymers

  Shin-ichiro Noro, Xin Zheng, AnQi Wang, Kazushige Suzuki, Soracha Kosasang, Satoshi Horike, Daniele Padovan, Kiyotaka Nakajima, Hiroyasu Sato, Kiyonori Takahashi, Takayoshi Nakamura

  Inorganic Chemistry 61 (8) 3379 - 3386 0020-1669 2022/02/16 [Refereed][Not invited]
   

  Mechanical force can be employed not only to efficiently synthesize new materials under environmentally friendly conditions but also to change the macroscopic and microscopic properties of materials. Although coordination polymers (CPs) are attractive functional materials because they possess high structural designability and diversity, mechanical force-induced structural and functional changes of CPs are challenging issues. In this study, two one-dimensional CPs, one a densely packed nonporous CP [Cu-2(bza)(4)(pyr)] (1) and the other a porous CP [Cu-2(1-nap)(4)(pyr)] (2) (bza = benzoate, 1-nap = 1-naphthoate and pyr = pyrimidine), were subjected to ball-milling to assess the effect of mechanical force on their porosities. Ball mill treatments were found to induce an amorphization and cause a 30 fold enhancement of the CO2 adsorption amount at 195 K and P/P-0 similar to 1 for 1 and a slightly decreased CO2 adsorption amount for 2. The results of thorough characterization studies suggest that the formation of extrinsic micropores in addition to extrinsic mesopores/macropores between particles takes place by ball milling.
• Effective Oxidation of 5‐Hydroxymethylfurfural to 2,5‐Diformylfuran by an Acetal Protection Strategy

  Tat Boonyakarn, Jan J. Wiesfeld, Miyuki Asakawa, Lulu Chen, Atsushi Fukuoka, Emiel J. M. Hensen, Kiyotaka Nakajima

  ChemSusChem 15 (7) e202200059  1864-5631 2022/02/11 [Refereed][Not invited]
   

  An acetal protection strategy for 5-hydroxymethylfurfural (HMF) was used to obtain 2,5-diformyfuran (DFF) using concentrated HMF solutions and a γ-Al2 O3 -supported Ru catalyst (Ru/γ-Al2 O3 ). The HMF-acetal with 1,3-propanediol can be oxidized to DFF-acetal with a yield of 84.0 % at an HMF conversion of 94.2 % from a 50 wt % solution. In contrast, aerobic oxidation of nonprotected HMF using a 10 wt % solution afforded DFF only in a moderate yield (52.3 %). Kinetic studies indicated that the six-membered ring acetal group not only prevents side reactions but also accelerates aerobic oxidation of the -CH2 OH moiety to -CHO under retention of the acetal functionality. Organic deposits formed during the reaction explained the significant decrease in the activity of the Ru/γ-Al2 O3 catalyst, which could be recovered neither by washing in water or organic solvents, nor by a calcination-reduction treatment. Sonication of the used Ru/γ-Al2 O3 catalyst in an aqueous NaOH solution successfully removed the deposits and allowed reuse of the catalyst for at least four times without activity loss.
• Phosphorus-Alloying as a Powerful Method for Designing Highly Active and Durable Metal Nanoparticle Catalysts for the Deoxygenation of Sulfoxides: Ligand and Ensemble Effects of Phosphorus

  Hiroya Ishikawa, Sho Yamaguchi, Ayako Nakata, Kiyotaka Nakajima, Seiji Yamazoe, Jun Yamasaki, Tomoo Mizugaki, Takato Mitsudome

  JACS Au 2 (2) 419 - 427 2691-3704 2022/01/11 [Refereed][Not invited]
  
• Hydrotalcite-Supported Cobalt Phosphide Nanorods as a Highly Active and Reusable Heterogeneous Catalyst for Ammonia-Free Selective Hydrogenation of Nitriles to Primary Amines

  Min Sheng, Sho Yamaguchi, Ayako Nakata, Seiji Yamazoe, Kiyotaka Nakajima, Jun Yamasaki, Tomoo Mizugaki, Takato Mitsudome

  ACS Sustainable Chemistry & Engineering 9 (33) 11238 - 11246 2168-0485 2021/08/23 [Refereed][Not invited]
  
• Support-Boosted Nickel Phosphide Nanoalloy Catalysis in the Selective Hydrogenation of Maltose to Maltitol

  Sho Yamaguchi, Shu Fujita, Kiyotaka Nakajima, Seiji Yamazoe, Jun Yamasaki, Tomoo Mizugaki, Takato Mitsudome

  ACS Sustainable Chemistry & Engineering 9 (18) 6347 - 6354 2168-0485 2021/05/10 [Refereed][Not invited]
  
• Single-Crystal Cobalt Phosphide Nanorods as a High-Performance Catalyst for Reductive Amination of Carbonyl Compounds

  Min Sheng, Shu Fujita, Sho Yamaguchi, Jun Yamasaki, Kiyotaka Nakajima, Seiji Yamazoe, Tomoo Mizugaki, Takato Mitsudome

  JACS Au 2691-3704 2021/04/07 [Refereed][Not invited]
  
• Ni2P Nanoalloy as an Air-Stable and Versatile Hydrogenation Catalyst in Water: P-Alloying Strategy for Designing Smart Catalysts

  Shu Fujita, Sho Yamaguchi, Jun Yamasaki, Kiyotaka Nakajima, Seiji Yamazoe, Tomoo Mizugaki, Takato Mitsudome

  CHEMISTRY-A EUROPEAN JOURNAL 27 (13) 4439 - 4446 0947-6539 2021/03 

  Non-noble metal-based hydrogenation catalysts have limited practical applications because they exhibit low activity, require harsh reaction conditions, and are unstable in air. To overcome these limitations, herein we propose the alloying of non-noble metal nanoparticles with phosphorus as a promising strategy for developing smart catalysts that exhibit both excellent activity and air stability. We synthesized a novel nickel phosphide nanoalloy (nano-Ni2P) with coordinatively unsaturated Ni active sites. Unlike conventional air-unstable non-noble metal catalysts, nano-Ni2P retained its metallic nature in air, and exhibited a high activity for the hydrogenation of various substrates with polar functional groups, such as aldehydes, ketones, nitriles, and nitroarenes to the desired products in excellent yields in water. Furthermore, the used nano-Ni2P catalyst was easy to handle in air and could be reused without pretreatment, providing a simple and clean catalyst system for general hydrogenation reactions.
• Air-stable and reusable nickel phosphide nanoparticle catalyst for the highly selective hydrogenation of d-glucose to d-sorbitol

  Sho Yamaguchi, Shu Fujita, Kiyotaka Nakajima, Seiji Yamazoe, Jun Yamasaki, Tomoo Mizugaki, Takato Mitsudome

  GREEN CHEMISTRY 23 (5) 1463-9262 2021/03 

  The hydrogenation of carbohydrates to polyols is an industrially important process, but it requires air-unstable, non-noble metal catalysts with low activity and harsh reaction conditions. Herein, we report a hydrotalcite (HT)-supported nickel phosphide nanoparticle (nano-Ni2P/HT) that exhibits both air stability and high activity for the selective hydrogenation of d-glucose to d-sorbitol in water. The nano-Ni2P/HT catalyst provides d-sorbitol in excellent yield with >99% selectivity under mild reaction conditions, and is the first non-noble metal catalyst that can operate under just 1 bar of H-2 or at ambient temperature. This high-performance nano-Ni2P/HT catalyst is significantly different from conventional Ni(0) and NiO nanoparticles and Raney catalysts, which result in almost no production of d-sorbitol, demonstrating the unique catalysis of nano-Ni2P/HT. Furthermore, nano-Ni2P/HT shows the highest activity among those reported for non-noble metal catalysts. The nano-Ni2P/HT catalyst can also be reused without sacrificing its high activity and selectivity. Additionally, the successful transformation of a concentrated d-glucose solution (50 wt%) to d-sorbitol has been achieved. This is the first example of an air-stable, highly active, and reusable non-noble metal catalyst that can replace conventional catalysts used for d-sorbitol production, thus providing a cheap, green, and sustainable route for this process.
• Air-Stable and Reusable Cobalt Phosphide Nanoalloy Catalyst for Selective Hydrogenation of Furfural Derivatives

  Hiroya Ishikawa, Min Sheng, Ayako Nakata, Kiyotaka Nakajima, Seiji Yamazoe, Jun Yamasaki, Sho Yamaguchi, Tomoo Mizugaki, Takato Mitsudome

  ACS CATALYSIS 11 (2) 750 - 757 2155-5435 2021/01 

  While metal phosphides have begun to attract attention as electrocatalysts, they remain underutilized in the field of liquid-phase molecular transformations. Herein, we describe a supported cobalt phosphide nanoalloy (nano-Co2P) that functions as a highly efficient, reusable heterogeneous catalyst for the selective hydrogenation of furfural derivatives. The carbonyl moieties of several furfural derivatives were selectively hydrogenated to produce the desired products in high yields. In contrast to conventional nonprecious metal catalysts, nano-Co2P uniquely exhibited air stability, which enabled easy and safe handling and precluded the need for H-2 pretreatment. Infrared and density functional theory studies revealed that the highly efficient hydrogenation is due to the favorable activation of the carbonyl moiety of furfural derivatives through the backdonation to its pi* orbital from the Co d-electrons.
• Controllable Factors of Supported Ir Complex Catalysis for Aromatic C-H Borylation

  Kyogo Maeda, Yohei Uemura, Wang-Jae Chun, Shazia Sharmin Satter, Kiyotaka Nakajima, Yuichi Manaka, Ken Motokura

  ACS CATALYSIS 10 (24) 14552 - 14559 2155-5435 2020/12 

  We have developed a catalyst in which an Ir complex and organic functionalities are coimmobilized on the silica surface. The catalytic activity for aromatic C-H borylation was significantly affected by (i) the linker length of the Ir-bipyridine complex, (ii) the coimmobilized organic functionality, and (iii) the substituents on the aromatic substrate compounds. The fine-tuned supported catalyst showed higher activity than the homogeneous Ir-bipyridine complex when using a specific substrate such as benzonitrile. We elucidated this property by conducting solid-state NMR, FT-IR, XAFS, and in situ FT-IR analysis.
• Heterogeneous catalysis for sustainable energy and chemical production -In honor of the 60th Birthday of Professor Atsushi Fukuoka

  Kiyotaka Nakajima, Toshiyuki Yokoi, Alexander Katz

  MOLECULAR CATALYSIS 496 2468-8231 2020/11
• Water-Resistant Pt Sites in Hydrophobic Mesopores Effective for Low-Temperature Ethylene Oxidation

  Shazia S. Satter, Jun Hirayama, Hirokazu Kobayashi, Kiyotaka Nakajima, Atsushi Fukuoka

  ACS CATALYSIS 10 (22) 13257 - 13268 2155-5435 2020/11 [Refereed][Not invited]
   

  The structure-activity relationship of silica-supported Pt catalysts in aerobic oxidation of 50 ppm ethylene was studied at 0 degrees C with a fixed-bed flow reactor and in situ characterization techniques using Fourier-transform infrared (FTIR) spectroscopy. The activity of all Pt catalysts examined here decreased by water molecules formed during stoichiometric oxidation of ethylene and became stable steadily. A mesoporous silica-supported Pt catalyst improved its steady-state activity after calcination of the support in air at 800 degrees C, whereas no such effect was observed for a nonporous silica support. CO-pulse titration, H2O adsorption measurements, Si-29 MAS NMR, and in situ FTIR along with catalytic activity studies revealed that the activity of the mesoporous silica-supported Pt catalyst is higher than that of nonporous silica-supported ones, despite showing similar hydrophobicity and low Pt dispersion. In situ characterization using CO as a molecular probe indicates that a part of the Pt surface inside hydrophobic mesopores is not involved in the hydrogenbonding network among physisorbed water molecules and surface SiOH groups even after full hydration of the catalyst surface, and bare Pt sites are expected to work more effectively for ethylene oxidation. Such a "hydrophobic Pt surface" can only be formed on a hydrophobic mesoporous silica support, which is probably because of Pt nanoparticles surrounded by a hydrophobic siloxane network entirely. A unique environment derived from the condensed siloxane network and restricted mesopores contributes largely to the high activity of Pt nanoparticles for low-temperature oxidation of trace ethylene.
• Nanovs.bulk rutile TiO2:N,F in Z-scheme overall water splitting under visible light

  Akinobu Miyoshi, Kosaku Kato, Toshiyuki Yokoi, Jan J. Wiesfeld, Kiyotaka Nakajima, Akira Yamakara, Kazuhiko Maeda

  JOURNAL OF MATERIALS CHEMISTRY A 8 (24) 11996 - 12002 2050-7488 2020/06 [Refereed][Not invited]
   

  Nanosized semiconductors are potentially efficient photocatalysts because of the short migration distance of excited charge carriers to their surface and their high surface area, both of which positively influence catalytic activity. Although the observation that "nano beats bulk" has been reported for several oxide photocatalysts, very few studies have demonstrated a similar tendency in oxynitrides (including nitrogen-doped oxides) for overall water splitting. Here, we report a rare example of nanosized nitrogen/fluorine-codoped rutile TiO2(nano-TiO2:N,F) as an O-2-evolution photocatalyst in a visible-light-driven Z-scheme water-splitting system in combination with Ru/SrTiO3:Rh and in the presence of redox mediator [Co(bpy)(3)](3+/2+)(bpy = 2,2 '-bipyridine). Utilization of nano-TiO2:N,F improved the activity of the Z-scheme system by a factor of 3-4 compared with bulk-sized TiO2:N,F (bulk-TiO2:N,F). The performance of the optimized nano-TiO2:N,F-based system was twice as high as that of the system constructed with previously reported tantalum/nitrogen-codoped rutile TiO(2)under a cocatalyst-free condition and was comparable to that of a system based on a benchmark BiVO(4)photocatalyst. Physicochemical analyses revealed that the high surface area and high density of reactive electrons in the nano-TiO2:N,F both contributed to its high photocatalytic activity.
• Unique Catalysis of Nickel Phosphide Nanoparticles to Promote the Selective Transformation of Biofuranic Aldehydes into Diketones in Water

  Shu Fujita, Kiyotaka Nakajima, Jun Yamasaki, Tomoo Mizugaki, Koichiro Jitsukawa, Takato Mitsudome

  ACS CATALYSIS 10 (7) 4261 - 4267 2155-5435 2020/04 [Refereed][Not invited]
   

  Although the development of metal nanoparticle catalysts for organic synthesis has been widely studied, the catalytic potential of "metal phosphide nanoparticles" has little been studied. Herein, we describe that nickel phosphide nanoparticles (Ni2P NPs) act as a highly efficient heterogeneous catalyst for the selective transformation of biofuranic aldehydes into diketones, which is a useful biorefining technology. The biofuranic aldehydes are hydrogenated in water without any additives, giving the corresponding diketones in high yields. The catalytic performance of Ni2P NPs demonstrated here is significantly different from conventional Ni(0) and NiO NPs, and other metal phosphide NPs, which show no activity, indicating the unique catalysis of Ni2P NPs. Spectroscopic analyses showed that bifunctional Ni2P NP catalysis combining their hydrogen-activating ability and surface acidity plays a crucial role, leading to the transformations of selective biofuranic aldehydes.
• Selective hydrogenation of 5-hydroxymethylfurfural and its acetal with 1,3-propanediol to 2,5-bis(hydroxymethyl)furan using supported rhenium-promoted nickel catalysts in water

  Jan J. Wiesfeld, Minjune Kim, Kiyotaka Nakajima, Emiel J. M. Hensen

  GREEN CHEMISTRY 22 (4) 1229 - 1238 1463-9262 2020/02 [Refereed][Not invited]
   

  The high reactivity of the formyl group of 5-hydroxymethylfurfural (5-HMF) is problematic, because it leads to undesired oligomerization reactions. This is usually countered by working in dilute non-aqueous solutions. Here, we present a novel approach to convert concentrated aqueous solutions of 5-HMF to 2,5-bishydroxymethylfuran (BHMF), which is a prospective monomer for polyesters and self-healing polymers. Our approach is based on the protection of the formyl group of 5-HMF using acetalization with 1,3-propanediol. Hydrogenation is carried out using an optimized bimetallic Ni-Re catalyst supported on TiO2 at a carefully controlled pH, resulting in balanced rates of deprotection and hydrogenation and high BHMF yield. Under optimized conditions at a benign temperature of 40 degrees C, hydrogenation of concentrated solutions (10-20 wt%) of protected 5-HMF in water gave 81-89% yields of BHMF without having to resort to platinum-group metals such as palladium or platinum.
• Catalytic Conversion of Lignocellulosic Biomass:Application of Heterogeneous and Homogeneous Catalysts to Process Biomass into Value-Added Compounds

  Jan J. Wiesfeld, Emiel J. M. Hensen, Kiyotaka Nakajima

  ACS Symposium Series 151 - 182 0097-6156 2020/01 [Refereed][Invited]
  
• Lewis Acid and Base Catalysis of YNbO4 Toward Aqueous-Phase Conversion of Hexose and Triose Sugars to Lactic Acid in Water

  Minjune Kim, Silvia Ronchetti, Barbara Onida, Nobuyuki Ichikuni, Atsushi Fukuoka, Hideki Kato, Kiyotaka Nakajima

  CHEMCATCHEM 12 (1) 350 - 359 1867-3880 2020/01 [Refereed][Not invited]
   

  Amphoteric YNbO4 was synthesized by the simple coprecipitation using (NH4)(3)[Nb(O-2)(4)] and Y(NO3)(3), and examined as a new solid acid-base bifunctional catalyst for various reactions including aqueous-phase conversion of glucose to lactic acid. After drying the white precipitate at 353 K for 3 h, the resultant oxide is an amorphous YNbO4 with high densities of Lewis acid sites (0.18 mmol g(-1)) and base sites (0.38 mmol g(-1)). Negatively-charged lattice oxygen of amorphous YNbO4 functioned as Lewis base sites that promote a Claisen-Schmidt-type condensation reaction with acetylacetone and benzaldehyde with comparable activity to reference catalysts. Amorphous YNbO4 can also be applicable to the production of lactic acid from glucose in water, which gives relatively high yields (19.6 %) compared with other reference catalysts. Mechanistic studies using glucose-1-d and H-2 nuclear magnetic resonance spectroscopy (NMR) revealed that YNbO4 first converts glucose to two carbohydrates (glyceraldehyde and pyruvaldehyde) through dehydration via the formation of 3-deoxyglucosone and subsequent retro-aldolization, and these intermediates are then converted to lactic acid by both dehydration and isomerization through hydride transfer.
• Synthesis of 5-hydroxymethylfurfural from highly concentrated aqueous fructose solutions using activated carbon

  Yuichi Nishimura, Manato Suda, Mai Kuroha, Hirokazu Kobayashi, Kiyotaka Nakajima, Atsushi Fukuoka

  CARBOHYDRATE RESEARCH 486 107826  0008-6215 2019/12 [Refereed][Not invited]
   

  An efficient and environmentally friendly system for producing 5-hydroxymethylfurfural (5-HMF) from fructose has been proposed. Substrate concentration is an important factor for practical application of the process; however, use of a high concentration of fructose has rarely been tested in the reaction because the conditions accelerate intermolecular side reactions to form adhesive humins. Humin by products stuck on reactor surfaces can make the production of 5-HMF on an industrial scale difficult. Therefore, developing a catalytic reaction system that can promote the synthesis of 5-HMF from highly concentrated fructose without causing adhesion of humins to reactors is needed. The present study demonstrated that activated carbons are promising materials for this system. Activated carbon catalyzed the conversion of fructose to 5-HMF without adhesion of humins to reactor vessels under practical conditions of high substrate concentration up to 73.2%. The catalytic activity was determined not only by the amount of surface weakly acidic oxygenated groups but also by the adsorption of fructose. In addition, strong adsorption of 5-HMF led to low selectivity of 5-HMF and the formation of adhesive humins. This is the first report to describe the synthesis of 5-HMF from solutions containing a fructose concentration greater than 70%.
• Influence of a Co-immobilized Tertiary Amine on the Structure and Reactivity of a Rh Complex: Accelerating Effect on Heterogeneous Hydrosilylation

  Kyogo Maeda, Yohei Uemura, Minjune Kim, Kiyotaka Nakajima, Shinji Tanaka, Wang-Jae Chun, Ken Motokura

  JOURNAL OF PHYSICAL CHEMISTRY C 123 (23) 14556 - 14563 1932-7447 2019/06 [Refereed][Not invited]
   

  Co-immobilization of a Rh complex and a tertiary amine on the same silica surface enhances the hydrosilylation reaction of olefins. In our previous study, the silica-supported Rh complex-tertiary amine catalyst (SiO2/Rh-NEt2) showed higher activity than a silica-supported Rh complex (SiO2/Rh) alone. Herein, the influence of the amine on the local structure of the Rh complex was evaluated by DNP-enhanced solid-state N-15 NMR spectroscopy and Rh K-edge XAFS measured at 20 K. The amine distorts the structure of the cyclooctadiene (COD) ligand in the Rh complex immobilized on the silica surface. The reactivity of the COD ligand with hydrosilane was confirmed by the in situ FTIR spectra, and it was found that the presence of an amine facilitates COD dissociation from the Rh center.This phenomenon accelerates the ligand exchange process in Rh-catalyzed hydrosilylation.
• Effective Strategy for High-Yield Furan Dicarboxylate Production for Biobased Polyester Applications

  Minjune Kim, Yaqiong Su, Takayuki Aoshima, Atsushi Fukuoka, Ernie J. M. Hensen, Kiyotaka Nakajima

  ACS CATALYSIS 9 (5) 4277 - 4285 2155-5435 2019/05 [Refereed][Not invited]
   

  A unique strategy for the formation of furan-2,5-dicarboxylic acid (FDCA)-derived esters with methanol and ethylene glycol in concentrated solutions was reported using a six-membered ring acetal of (5-hydroxymethypfurfural (HMF) with 1,3-propanediol in order to improve the economics for the production of polyethylene 2,5-furandicarboxylate (PEF), a biobased polyester. Aerobic oxidative esterification with methanol and ethylene glycol in the presence of a CeO2 -supported Au catalyst gave 80-95% yields of methyl furan-2,5-dicarboxylate and bis(2-hydroxyethyl)furan-2,5-dicarboxylate from concentrated HMF-acetal solutions (10-20 wt %). Kinetic studies combined with density functional theory (DFT) calculations were used to identify two key steps for the conversion of the cyclic acetal ring to the corresponding methyl ester: (i) partial hydrolysis of the acetal ring by OH- ions and (ii) subsequent oxidation of the hemiacetal in solution by molecular O-2 on Au nanoparticles. These results represent a significant contribution not only to cutting-edge conversion technology for renewable biomass feedstocks to PEF-based applications but also to opportunities for the efficient conversion of substrates with a reactive formyl group in high yield.
• DFT Mechanistic Study on the Complete Oxidation of Ethylene by the Silica-Supported Pt Catalyst: C = C Activation via the Ethylene Dioxide Intermediate

  Ray Miyazaki, Naoki Nakatani, Sergey V. Levchenko, Takuro Yokoya, Kiyotaka Nakajima, Kenji Hara, Atsushi Fukuoka, Jun-ya Hasegawa

  JOURNAL OF PHYSICAL CHEMISTRY C 123 (20) 12706 - 12715 1932-7447 2019/05 [Refereed][Not invited]
   

  Low-temperature complete oxidation of ethylene by the mesoporous silica-supported Pt catalyst is a forefront technology for food preservation. Public implementations of the Pt catalyst have already begun, and spectroscopy analyses on the catalytic mechanism have been reported. In this study, density functional theory calculations were conducted to clarify the potential energy profile and electronic mechanism of the catalytic reaction. Based on the experimental findings, a reaction pathway was proposed for ethylene oxidation up to CO2 formation via the HCHO intermediate. Among several possibilities, a reaction pathway via ethylene dioxide species is energetically plausible for the C-C bond cleavage to generate HCHO. Particular focus was given to the electronic effect of the silica support in the ethylene dioxide route. The reservoir effect, in which the siloxide groups take electrons from the Pt moiety, reduces the activation energy of the C-C bond cleavage step by taking electrons from sigma(C-C) orbital.
• Effects of 2,5-furanylene sulfides in polymer main chains on polymer physical properties

  Abu Bin Ihsan, Yasuhiro Tawara, Shinya Goto, Hirokazu Kobayashi, Kiyotaka Nakajima, Atsushi Fukuoka, Yasuhito Koyama

  POLYMER JOURNAL 51 (4) 413 - 422 0032-3896 2019/04 [Refereed][Not invited]
   

  We developed 2,5-furanylene sulfide-containing polymers bearing different spacers as repeating units and evaluated the interactions between the furanylene sulfide units in the polymers. The treatment of 2,5-dichlorofuran derivatives with dithiolates at 200 degrees C promotes polycondensation via nucleophilic aromatic substitution to give the corresponding furanylene sulfide-containing polymers. Tensile measurements and spectral analyses demonstrate that the furanylene sulfide moieties form remarkably stable pi-pi stacking structures based on the enhanced dipole moment induced by sulfur linkages When the polymer has a long spacer between repeating furanylene sulfide units, the polymer behaves as a chemically stable network polymer comprised of pi-pi stacking structures as cross-linking units.
• Selective Glucose-to-Fructose Isomerization in Ethanol Catalyzed by Hydrotalcites

  Mizuho Yabushita, Natsumi Shibayama, Kiyotaka Nakajima, Atsushi Fukuoka

  ACS CATALYSIS 9 (3) 2101 - 2109 2155-5435 2019/03 [Refereed][Not invited]
   

  A combination of ethanol solvent and hydrotalcite (HT) with a Mg/Al ratio of 3:1 was effective for the isomerization of glucose to fructose in up to 56% yield with a high selectivity of 80%. The ethanol solvent shifts the isomerization equilibrium between glucose and fructose, which allows the fructose yield to exceed the upper limit of enzymatic isomerization conducted in water at modest temperatures (i.e., 50%). The HT catalyst maintained such high catalytic performance in repeated use at least three times via calcination and subsequent reconstruction of the original layered structure by the memory effect, which was operated in an aqueous solution containing ammonium carbonate. The results of catalyst screening, characterization, and isotope tracer analysis have revealed that the base sites of HT mainly contribute to its high catalytic activity for glucose-to-fructose isomerization.
• 触媒法バイオマス変換による基幹化学品合成

  佐川 拓矢, 中島清隆, 福岡 淳

  触媒 61 (4) 182 - 188 2019 [Not refereed][Invited]
  
• Silica Support-Enhanced Pd-Catalyzed Allylation Using Allylic Alcohols

  Ken Motokura, Marika Ikeda, Minjune Kim, Kiyotaka Nakajima, Sae Kawashima, Masayuki Nambo, Wang-Jae Chun, Shinji Tanaka

  CHEMCATCHEM 10 (20) 4536 - 4544 1867-3880 2018/10 [Refereed][Not invited]
   

  Although allylation using allylic alcohol is an environmentally-friendly method because of water being the sole byproduct in such reactions, allylic alcohol is one of the most difficult allylating agents in Pd-catalyzed allylation of nucleophiles. In this study, we successfully developed a mesoporous silica-supported Pd complex as an efficient catalyst for the allylation of nucleophiles using allylic alcohols as allylating agents. The allylic alcohol is activated by the silanol group on the support surface, which easily undergoes a -allylpalladium intermediate formation. The catalytic activity of the supported Pd complex was ca. 9 times higher than that of its homogeneous precursor Pd complex. A highest turnover number of 4500 based on Pd was achieved. Various nucleophiles and allylic alcohol derivatives could be used as substrates. Not only the detailed catalyst structure but also the reaction mechanism including the concerted activation of allylic alcohol by the Pd complex and silanol were investigated by several spectroscopic techniques, such as Pd K-edge XAFS, solid-state NMR, and in-situ FT-IR measurements.
• A Density Functional Theory Study of the Mechanism of Direct Glucose Dehydration to 5-Hydroxymethylfurfural on Anatase Titania

  Guanna Li, Evgeny A. Pidko, Emiel J. M. Hensen, Kiyotaka Nakajima

  CHEMCATCHEM 10 (18) 4084 - 4089 1867-3880 2018/09 [Refereed][Not invited]
   

  A new mechanism for glucose dehydration to HMF without the intermediate isomerization to fructose is discussed for surface models of anatase TiO2 using periodic density functional theory calculations. Activation of the glucose at glucose's C3-OH position by titania starts the reaction resulting in adsorbed 3-deoxyglucosone. The mechanistic study reveals two possible pathways for the acyclic form of glucose. Comparison of different surface models shows that the presence of tetrahedral Ti4+ species on a defective TiO2(101) anatase surface is essential for explaining the activity. Synergy between a strong Lewis acidic Ti site and a vicinal basic oxygen site of a TiOH group is essential to establish the direct conversion of glucose to HMF. IR spectroscopy of adsorbed chloroform in the presence of water confirms the presence of water tolerant Lewis acid sites in close proximity to basic sites. In conventional glucose dehydration, Lewis acid sites and proton donors act as catalytic sites for efficient sequential isomerization-dehydration to HMF, while direct dehydration to HMF requires the cooperation of Lewis acid-base pairs.
• Oxidation of Trace Ethylene at 0 degrees C over Platinum Nanoparticles Supported on Silica

  Shazia S. Satter, Takuro Yokoya, Jun Hirayama, Kiyotaka Nakajima, Atsushi Fukuoka

  ACS SUSTAINABLE CHEMISTRY & ENGINEERING American Chemical Society ({ACS}) 6 (9) 11480 - 11486 2168-0485 2018/09 [Refereed][Not invited]
   

  Oxidation of trace ethylene (50 ppm) at 0 degrees C was systematically studied using Pt nanoparticles supported on mesoporous silica (SBA-15) in a fixed-bed flow reactor. The SBA-15 supported Pt catalyst (1.8 wt % Pt loading) exhibited an ethylene conversion higher than 99% at the initial stage, which gradually began to decrease at 90 min and reached 33% within 240 min. The CO2 yield was lower than the corresponding ethylene conversion before the steady state was reached. This was due to the formation of intermediates that were stabilized on the catalyst surface. These intermediates could be recovered in the form of CO2 by heating the spent catalyst in a mixed N-2 and He (1:19, v/v) flow at 150 degrees C. The addition of water vapor to the catalyst bed decreased the original activity drastically because physically adsorbed water molecules partly blocked the active Pt sites. Control experiments using nonordered silica supports (Aerosil 380 and 200) showed similar catalytic behavior as that observed with SBA-15. The formation of highly dispersed Pt nanoparticles on the silica surfaces is thus the key to the development of effective Pt catalysts for low-temperature oxidation of ethylene.
• Low Temperature Oxidation of Trace Ethylene over Pt Nanoparticles Supported on Hydrophobic Mesoporous Silica

  Shazia S. Satter, Jun Hirayama, Kiyotaka Nakajima, Atsushi Fukuoka

  CHEMISTRY LETTERS 47 (8) 1000 - 1002 0366-7022 2018/08 [Refereed][Not invited]
   

  Hydrophobic SBA-15 has been found to improve catalytic activity of supported Pt nanoparticles for ethylene oxidation at 0 degrees C. Pt nanoparticles stabilized inside the hydrophobic mesopores enabled smooth ethylene conversion and CO2 formation at a steady state due to constant removal of physisorbed water formed during ethylene oxidation.
• Catalytic Conversion of Biomass-Derived Carbohydrates to Methyl Lactate by Acid-Base Bifunctional gamma-Al2O3

  Sho Yamaguchi, Mizuho Yabushita, Minjune Kim, Jun Hirayama, Ken Motokura, Atsushi Fukuoka, Kiyotaka Nakajima

  ACS SUSTAINABLE CHEMISTRY & ENGINEERING 6 (7) 8113 - 8117 2168-0485 2018/07 [Refereed][Not invited]
   

  We report the catalytic conversion of biomass-derived carbohydrates to methyl lactate using metal oxides. The combination of Lewis acid-base sites on gamma-Al2O3 is superior to several amphoteric oxides for the production of methyl lactate from both dihydroxyacetone and glucose in methanol. The successful production of methyl lactate from glucose by gamma-Al2O3 is attributed to high densities of both acid and base functionalities that are essential for the promotion of the stepwise reaction, which consists of isomerization, retro-aldol, and dehydration reactions.
• Aerobic Oxidation of 5-(Hydroxymethyl)furfural Cyclic Acetal Enables Selective Furan-2,5-dicarboxylic Acid Formation with CeO2-Supported Gold Catalyst

  Minjune Kim, Yaqiong Su, Atsushi Fukuoka, Emiel J. M. Hensen, Kiyotaka Nakajima

  ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 57 (27) 8235 - 8239 1433-7851 2018/07 [Refereed][Not invited]
   

  The utilization of 5-(hydroxymethyl)furfural (HMF) for the large-scale production of essential chemicals has been largely limited by the formation of solid humin as a byproduct, which prevents the operation of stepwise batch-type and continuous flow-type processes. The reaction of HMF with 1,3-propanediol produces an HMF acetal derivative that exhibits excellent thermal stability. Aerobic oxidation of the HMF acetal with a CeO2-supported Au catalyst and Na2CO3 in water gives a 90-95% yield of furan 2,5-dicarboxylic acid, an increasingly important commodity chemical for the biorenewables industry, from concentrated solutions (10-20 wt%) without humin formation. The six-membered acetal ring suppresses thermal decomposition and self-polymerization of HMF in concentrated solutions. Kinetic studies supported by DFT calculations identify two crucial steps in the reaction mechanism, that is, the partial hydrolysis of the acetal into 5-formyl-2-furan carboxylic acid involving OH- and Lewis acid sites on CeO2, and subsequent oxidative dehydrogenation of the in situ generated hemiacetal involving Au nanoparticles. These results represent a significant advance over the current state of the art, overcoming an inherent limitation of the oxidation of HMF to an important monomer for biopolymer production.
• Metal-Free and Selective Oxidation of Furfural to Furoic Acid with an N-Heterocyclic Carbene Catalyst

  Navneet Kumar Gupta, Atsushi Fukuoka, Kiyotaka Nakajima

  ACS SUSTAINABLE CHEMISTRY & ENGINEERING 6 (3) 3434 - 3442 2168-0485 2018/03 [Refereed][Not invited]
   

  Aerobic oxidation of biomass-derived furfural to furoic acid was studied with an N-heterocyclic carbene as a homogeneous catalyst. Carbene species generated in situ on 1,3-bis(2,4,6-trimethylphenyl) imidazolium chloride with a strong organic base (1,8-diazabicyclo[5.4.0]undec-7-ene) was highly active and selective for the formation of furoic acid in dimethyl sulfoxide at 40 degrees C. This reaction initiates the formation of a Breslow intermediate between an N-heterocyclic carbene and a furfural molecule and the subsequent activation of molecular O-2. While the active carbene catalyst promoted furfural dimerization to afford furoin as a side reaction, furoin was decomposed into the Breslow intermediate and furfural through a reverse reaction, which were then converted quantitatively to furoic acid. Kinetic studies revealed that the apparent activation energy for this furfural oxidation was only 20 kJ mol(-1), which is significantly lower than that with a supported Au catalyst (30.4 kJ mol(-1)). The N-heterocyclic carbene catalyst can oxidize various furan-based aldehydes with high selectivity; however, the electron withdrawing group bonded to the furan ring has a negative effect on the reaction rate. Furfural can also be oxidized selectively to furoic acid, even in the presence of byproducts that are formed by acid-catalyzed dehydration of xylose with Amberlyst-70. As a result, a sequential reaction system based on initial dehydration and subsequent aerobic oxidation was developed for the production of furoic acid from xylose, without the need for furfural purification, using Amberlyst-70 (a solid acid) and an N-heterocyclic carbene catalyst.
• Facile Formation of Lactic Acid from a Triose Sugar in Water over Niobium Oxide with a Deformed Orthorhombic Phase

  Kiyotaka Nakajima, Jun Hirata, Minjune Kim, Navneet Kumar Gupta, Tom Murayama, Akihiro Yoshida, Norihito Hiyoshi, Atsushi Fukuoka, Wataru Ueda

  ACS CATALYSIS 8 (1) 283 - 290 2155-5435 2018/01 [Refereed][Not invited]
   

  Hydrothermal treatment of NH4[NbO(C2O4)(2)(H2O)(2)]nH(2)O in water at 448 K for 3 days produced crystalline Nb2O5 with a deformed orthorhombic structure and a high surface area (208 m(2) g(-1)). Fourier-transform infrared spectroscopy measurements of pyridine adsorption revealed that the Nb2O5 catalyst has both high densities of Bronsted and Lewis acid sites that can work in the presence of water. One feature of the Nb2O5 catalyst is its high density of water-compatible Lewis acid sites (0.21 mmol g(-1)), which is much larger than that of Nb(2)O(5)nH(2)O (0.03 mmol g(-1)). The Nb2O5 catalyst was studied as a solid acid catalyst for the formation of lactic acid from 1,3-dihydroxyacetone and pyruvaldehyde in water at 373 K, and was determined to be a highly active and selective catalyst, compared with typical acid catalysts (H2SO4, Sc(OTf)(3), and Nb(2)O(5)nH2O). A high Lewis acid density with moderate acid strength is a crucial factor for the high catalytic performance exhibited for the former reaction. High densities of both Bronsted and Lewis acid sites in the catalyst promote the fast and selective production of lactic acid in the latter reaction. In addition, Such Lewis acidity of the Nb2O5 is also effective over conventional acid catalysts in xylose dehydration to furfural in water, with respect to reaction rate and furfural selectivity. The combination of aqueous-phase dehydration of xylose over the Nb2O5 and the continuous extraction of furfural with an immiscible organic solvent resulted in a high selectivity toward furfural of similar to 78.5% with high xylose conversion (97%).
• Facile formation of gold nanoparticles on periodic mesoporous bipyridine-silica

  Nobuhiro Ishito, Kiyotaka Nakajima, Yoshifumi Maegawa, Shinji Inagaki, Atsushi Fukuoka

  CATALYSIS TODAY 298 258 - 262 0920-5861 2017/12 [Refereed][Not invited]
   

  Outline Highlights Abstract Graphical abstract Keywords 1. Introduction 2. Experimental 3. Results and discussion 4. Conclusions References Show full outline Figures (9) Unlabelled figure Scheme 1. Formation of Au complex on BPy-PMO Fig. 1. (a) Au L3-edge XANES, (b) EXAFS oscillation, (c) Fourier transforms of EXAFS Fig. 2. (a) N2 adsorption isotherms and (b) NLDFT pore diameter distribution curves of Fig. 3. XRD patterns of BPy-PMO (black line) and AuNPs/BPy-PMO (blue line) in (a) low Fig. 4. (a) N2 adsorption isotherms and (b) XRD patterns of bare (black line) and Show all figures Elsevier Catalysis Today Volume 298, 1 December 2017, Pages 258-262 Catalysis Today Facile formation of gold nanoparticles on periodic mesoporous bipyridine-silica Silica-supported gold nanoparticles (AuNPs) can be synthesized on a bipyridine incorporated periodic mesoporous organosilica (BPy-PMO) as an inorganic support. Reaction of a bipyridine group in the periodic mesoporous organosilica with HAuCl4 forms an AuCl2-based complex, and its structure corresponds to a homogeneous complex, [AuCl2(bpy)]Cl. Thermal reduction of the complex in H-2 results in the formation of small gold nanoparticles with an average size of ca. 3.8 nm. Combined with nitrogen adsorption, XRD, UV/Vis, TEM, and XAFS measurements, it is demonstrated that uniform gold nanoparticles are homogeneously distributed inside mesopores. The size and distribution of gold nanoparticles are mainly controlled by strong interaction of surface metallic Au with pore walls of the periodic mesoporous organosilica. AuNPs/BPy-PMO shows higher catalytic activity than Au/MCM-41 in aerobic oxidation of benzaldehyde. (C) 2017 Elsevier B.V. All rights reserved.
• Synthesis of Rare Earth Niobate and Tantalate Powders via a Peroxo Complex Route

  Hideki Kato, Katsuya Shimizu, Kiyotaka Nakajima, Makoto Kobayashi, Masato Kakihana

  CHEMISTRY LETTERS 46 (10) 1515 - 1517 0366-7022 2017/10 [Refereed][Not invited]
   

  Powders of REMO4 (RE: rare earth, M: Nb and Ta) were synthesized by a coprecipitation method employing water-soluble peroxo Nb/Ta complexes. This peroxo-based method is an aqueous solution route free from organics and halides. REMO4 was directly crystallized by annealing the precursor under moderate conditions. It has been revealed that the precursors are also useful for synthesis of oxynitrides under mild nitriding conditions.
• Concerted Catalysis in Tight Spaces: Palladium-Catalyzed Allylation Reactions Accelerated by Accumulated Active Sites in Mesoporous Silica

  Ken Motokura, Marika Ikeda, Masayuki Nambo, Wang-Jae Chun, Kiyotaka Nakajima, Shinji Tanaka

  CHEMCATCHEM 9 (15) 2924 - 2929 1867-3880 2017/08 [Refereed][Not invited]
   

  The surface of mesoporous silica was modified with a Pd-bisphosphine complex and/or a tertiary amine group for concerted acceleration of allylation reactions. Mesoporous-silica-supported catalysts with a 1.6 nm pore diameter showed higher performance than nonporous or larger mesoporous silica-supported catalysts owing to the accumulation of active sites into a confined space. For the case in which allyl alcohol was used in the reaction, the presence of a silanol group on the surface was quite effective: the turnover number of Pd was nine times greater than that of the homogeneous Pd complex.
• Amorphous Nb2O5 as a Selective and Reusable Catalyst for Furfural Production from Xylose in Biphasic Water and Toluene

  Navneet Kumar Gupta, Atsushi Fukuoka, Kiyotaka Nakajima

  ACS CATALYSIS 7 (4) 2430 - 2436 2155-5435 2017/04 [Refereed][Not invited]
   

  Aqueous-phase dehydration of xylose into furfural was studied in the presence of amorphous Nb2O5 with water-compatible Bronsted and Lewis acid sites. Nb2O5 was determined as a more active and selective catalyst for xylose dehydration than typical homogeneous Bronsted and Lewis acid catalysts including HCl and Sc(OTf)(3), and Nb2O5 converted 93% of xylose with 48% selectivity toward furfural in water at 393 K. No significant loss of the original catalytic activity was observed after Nat-exchange treatment, which indicates that the reaction proceeded only on Lewis acid sites. Isotope-labeling experiments using D2O and xylose suggested that furfural is formed through stepwise dehydration via a highly reactive dicarbonyl intermediate on Nb2O5, whereas typical Lewis acids such as CrCl3 and Sc(OTf)(3), convert xylose to furfural in water through hydride transfer and subsequent dehydration via xylulose as a ketose-type intermediate. The difference in the reaction mechanism accounts for the lower activation energy (83 kJ mol(-1)) with Nb2O5 than those with Sc(OTf)(3) and HCl (107-131 kJ mol(-1)). Continuous extraction of evolved furfural with toluene enabled a large increase in the selectivity toward furfural from 48% to 72% and prevented deactivation of the Lewis acid sites by covering with heavy byproducts, represented by humin.
• Hydrothermal synthesis of a layered-type W-Ti-O mixed metal oxide and its solid acid activity

  Toru Murayama, Kiyotaka Nakajima, Jun Hirata, Kaori Omata, Emiel J. M. Hensen, Wataru Ueda

  CATALYSIS SCIENCE & TECHNOLOGY 7 (1) 243 - 250 2044-4753 2017/01 [Refereed][Not invited]
   

  A layered-type W-Ti-O mixed oxide was synthesized by hydrothermal synthesis from an aqueous solution of ammonium metatungstate and titanium sulfate. To avoid the formation of titania, oxalic acid was used as a reductant. Optimized synthesis led to rod-like particles comprised of MO6 (M = W, Ti) octahedra connected in a corner-sharing fashion in the c-direction and in the form of micropore-containing {W6O21} units in the a-b plane. The surface area, acidity and acid catalytic activity (alkylation) increased with the amount of the layered-type W-Ti-O phase. Strong Bronsted acid sites formed due to the thermal release of ammonia from the uncalcined precursor. Calcination at 400 degrees C led to the highest acidity and alkylation activity. Alkylation of benzyl alcohol and toluene led to heavy product formation due to over-alkylation of the product. The selectivity to the mono-alkylated product was improved by the addition of water, which competes with the selectively formed products for adsorption on the acid sites. FT-IR measurements showed that the layered-type W-Ti-O possesses Bronsted acid sites and at least two different Lewis acid sites. The stronger Lewis acid sites can be converted into Bronsted acid sites in the presence of water, and the weaker Lewis acid sites functioned in the presence of water. This water tolerance of Lewis acid sites is an important characteristic of layered-type W-Ti-O, as it allows the bifunctional catalyst to convert 1,3-DHA into lactic acid in water.
• A Combined Catalyst of Pt Nanoparticles and TiO2 with Water-Tolerant Lewis Acid Sites for One-Pot Conversion of Glycerol to Lactic Acid

  Tasuku Komanoya, Ayaka Suzuki, Kiyotaka Nakajima, Masaaki Kitano, Keigo Kamata, Michikazu Hara

  CHEMCATCHEM 8 (6) 1094 - 1099 1867-3880 2016/03 [Refereed][Not invited]
   

  Catalytic conversion of glycerol to valuable chemicals has been recognized as an attractive and challenging reaction in biorefinery. In this paper, we demonstrated that a combined catalyst of Pt nanoparticles and TiO2 worked as a highly active catalyst for the one-pot conversion of glycerol to lactic acid in water. The yield of lactic acid reached 63% under oxygen atmosphere without the use of any additives such as strong bases, and the catalyst could be reused without significant loss of the catalytic performance. The mechanistic studies revealed that Pt nanoparticles on TiO2 selectively oxidized glycerol to C3 aldehyde/ketone, and Lewis acid sites on TiO2 smoothly promoted the dehydration and rehydration/rearrangement reactions of the intermediates to produce lactic acid efficiently.
• Selective synthesis of carbon monoxide via formates in reverse water-gas shift reaction over alumina-supported gold catalyst

  Nobuhiro Ishito, Kenji Hara, Kiyotaka Nakajima, Atsushi Fukuoka

  JOURNAL OF ENERGY CHEMISTRY 25 (2) 306 - 310 2095-4956 2016/03 [Refereed][Not invited]
   

  Thermal decomposition of formic acid on SiO2, CeO2 and gamma-Al2O3 was studied as an elementary step of reverse water-gas shit reaction (RWGS) over supported Au catalysts. gamma-Al2O3 showed the highest CO selectivity among the tested oxides in the decomposition of formic acid. Infrared spectroscopy showed the formation of four formate species on gamma-Al2O3: three eta(1)-type and one mu(2)-type species, and these formates decomposed to CO at 473 K or higher. Au-loaded gamma-Al2O3 samples were prepared by a deposition precipitation method and used as catalysts for RWGS. The supported Au catalyst gave CO with high selectivity over 99% from CO2 and H-2, which is attributed to the formation of formates on Au and subsequent decomposition to CO on gamma-Al2O3. (C) 2015 Science Press and Dalian Institute of Chemical Physics. All rights reserved.
• ChemInform Abstract: Recent Progress in the Development of Solid Catalysts for Biomass Conversion into High Value-Added Chemicals

  Michikazu Hara, Kiyotaka Nakajima, Keigo Kamata

  ChemInform Wiley-Blackwell 47 (9) no  2016/02 [Refereed][Not invited]
  
• Synthesis of niobium-doped titanate nanotubes as solid acid catalysts

  Emiko Wada, Masaaki Kitano, Kazuto Yamamoto, Kiyotaka Nakajima, Shigenobu Hayashi, Michikazu Hara

  CATALYSIS SCIENCE & TECHNOLOGY 6 (13) 4832 - 4839 2044-4753 2016 [Refereed][Not invited]
   

  Niobium-doped titanate nanotubes (Nb-TiNTs) with various Nb contents were prepared by hydrothermal treatment of Nb-doped TiO2 with an aqueous NaOH solution and subsequent proton exchange. Nb-TiNTs effectively catalyzed the Friedel-Crafts alkylation of toluene with benzyl chloride or benzyl alcohol and the activity increased with the Nb content, reaching a maximum at 5%. Furthermore, Nb-TiNTs exhibited much higher catalytic activity than other Nb-containing solid acid catalysts such as Nb2O5 center dot nH(2)O, Nb-Ti mixed oxides and Nb-Ti nanosheet materials. Fourier transform-infrared (FT-IR) spectroscopy measurements revealed that Nb-TiNTs possess both Lewis and Bronsted acid sites, and the amounts of these acid sites are comparable to those of non-doped TiNTs. The high catalytic performance of Nb-TiNTs is attributable to their higher Bronsted acid strength and to the enhanced accessibility of reactant molecules to acid sites.
• Transesterification of Triolein over Hydrophobic Microporous Carbon with SO3H Groups

  Kiichi Fukuhara, Kiyotaka Nakajima, Masaaki Kitano, Shigenobu Hayashi, Michikazu Hara

  CHEMCATCHEM 7 (23) 3945 - 3950 1867-3880 2015/12 [Refereed][Not invited]
   

  SO3H-bearing microporous amorphous carbon with a large BET surface area (approximate to 2000 m(2) g(-1)) and a high density of SO3H groups (0.5 mmol g(-1)) was investigated as a solid acid catalyst for the transesterification of triolein and esterification of oleic acid with methanol. The separable and reusable carbon catalyst exhibits higher catalytic performance for both reactions than conventional homogeneous and heterogeneous acid catalysts, including sulfuric acid, at 353 K. This carbon catalyst can provide methyl oleate yields over 99%, even in a triolein-oleic acid mixture that resembles a crude vegetable oil, owing to efficient transesterification and esterification reactions. The carbon material is sufficiently hydrophobic to be distributed throughout the hydrophobic triolein phase, resulting in high catalytic performance for both reactions.
• Synergistic Catalysis by Lewis Acid and Base Sites on ZrO2 for Meerwein-Ponndorf-Verley Reduction

  Tasuku Komanoya, Kiyotaka Nakajima, Masaaki Kitano, Michikazu Hara

  JOURNAL OF PHYSICAL CHEMISTRY C 119 (47) 26540 - 26546 1932-7447 2015/11 [Refereed][Not invited]
   

  Early transition metal oxides, TiO2, ZrO2, and Nb2O5, were studied as heterogeneous catalysts for the Meerwein-Ponndorf-Verley (MPV) reduction of cyclohexanone in 2-propanol. Despite a small amount of Lewis acid sites and weak Lewis acid strength, ZrO2 was clearly superior to TiO2 and Nb2O5 with respect to reaction rate. Fourier transform infrared spectroscopy (FT-IR) and temperature-programmed-desorption (TPD) measurements revealed that ZrO2 has large amounts of base sites that activate the methylene groups in 2-propanol bonded to Lewis acid sites. Various analyses, including experiments using isotopic 2-propanol, suggest that efficient MPV reduction over ZrO2 is due not only to Lewis acid strength and density, but also to a synergistic effect of base and Lewis acid sites.
• Ruthenium-Immobilized Periodic Mesoporous Organosilica: Synthesis, Characterization, and Catalytic Application for Selective Oxidation of Alkanes

  Nobuhiro Ishito, Hirokazu Kobayashi, Kiyotaka Nakajima, Yoshifumi Maegawa, Shinji Inagaki, Kenji Hara, Atsushi Fukuoka

  CHEMISTRY-A EUROPEAN JOURNAL 21 (44) 15564 - 15569 0947-6539 2015/10 [Refereed][Not invited]
   

  Periodic mesoporous organosilica (PMO) is a unique material that has a crystal-like wall structure with coordination sites for metal complexes. A Ru complex, [RuCl2(CO)(3)](2), is successfully immobilized onto 2,2'-bipyridine (BPy) units of PMO to form a single-site catalyst, which has been confirmed by various physicochemical analyses. Using NaClO as an oxidant, the Ru-immobilized PMO oxidizes the tertiary CH bonds of adamantane to the corresponding alcohols at 57 times faster than the secondary CH bonds, thereby exhibiting remarkably high regioselectivity. Moreover, the catalyst converts cis-decalin to cis-9-decalol in a 63% yield with complete retention of the substrate stereochemistry. The Ru catalyst can be separated by simple filtration and reused without loss of the original activity and selectivity for the oxidation reactions.
• Formation of 5-(Hydroxymethyl)furfural by Stepwise Dehydration over TiO2 with Water-Tolerant Lewis Acid Sites

  Ryouhei Noma, Kiyotaka Nakajima, Keigo Kamata, Masaaki Kitano, Shigenobu Hayashi, Michikazu Hara

  JOURNAL OF PHYSICAL CHEMISTRY C 119 (30) 17117 - 17125 1932-7447 2015/07 [Refereed][Not invited]
   

  The reaction mechanism for the formation of 5(hydroxymethyl)furfural (HMF) from glucose in water over TiO2 and phosphate-immobilized TiO2 (phosphate/TiO2) with water-tolerant Lewis acid sites was studied using isotopically labeled molecules and C-13 nuclear magnetic resonance measurements for glucose adsorbed on TiO2. Scandium trifluoromethanesulfonate (Sc(OTf)(3)), a highly active homogeneous Lewis acid catalyst workable in water, converts glucose into HMF through aldose ketose isomerization between glucose and fructose involving a hydrogen transfer step and subsequent dehydration of fructose. In contrast to Sc(OTf)(3), Lewis acid sites on bare TiO2 and phosphate/TiO2 do not form HMF through the isomerization dehydration route but through the stepwise dehydration of glucose via 3-deoxyglucosone as an intermediate. Continuous extraction of the evolved HMF with 2-sec-butylphenol results in the increase in the HMF selectivity for phosphate/TiO2, even in highly concentrated glucose solution. These results suggest that limiting the reactions between HMF and the surface intermediates improves the efficiency of HMF production.
• Recent progress in the development of solid catalysts for biomass conversion into high value-added chemicals

  Michikazu Hara, Kiyotaka Nakajima, Keigo Kamata

  SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 16 (3) 034903  1468-6996 2015/06 [Refereed][Not invited]
   

  In recent decades, the substitution of non-renewable fossil resources by renewable biomass as a sustainable feedstock has been extensively investigated for the manufacture of high value-added products such as biofuels, commodity chemicals, and new bio-based materials such as bioplastics. Numerous solid catalyst systems for the effective conversion of biomass feedstocks into value-added chemicals and fuels have been developed. Solid catalysts are classified into four main groups with respect to their structures and substrate activation properties: (a) micro-and mesoporous materials, (b) metal oxides, (c) supported metal catalysts, and (d) sulfonated polymers. This review article focuses on the activation of substrates and/or reagents on the basis of groups (a)-(d), and the corresponding reaction mechanisms. In addition, recent progress in chemocatalytic processes for the production of five industrially important products (5-hydroxymethylfurfural, lactic acid, glyceraldehyde, 1,3-dihydroxyacetone, and furan-2,5-dicarboxylic acid) as bio-based plastic monomers and their intermediates is comprehensively summarized.
• Efficient Mukaiyama aldol reaction in water with TiO4 tetrahedra on a hydrophobic mesoporous silica surface

  Hiroshi Shintaku, Kiyotaka Nakajima, Masaaki Kitano, Michikazu Hara

  CHEMICAL COMMUNICATIONS 50 (88) 13473 - 13476 1359-7345 2014/11 [Refereed][Not invited]
   

  A new heterogeneous catalyst, hydrophobic TiO4-deposited mesoporous silica, has been designed for the efficient Mukaiyama-aldol condensation, a water-participating Lewis acid-catalyzed reaction between a hydrophobic carbonyl compound and silyl enol ether. The prepared catalyst suspended in water exhibited high catalytic performance as a reusable catalyst for the reaction without a surfactant.
• Selective glucose transformation by titania as a heterogeneous Lewis acid catalyst

  Kiyotaka Nakajima, Ryouhei Noma, Masaaki Kitano, Michikazu Hara

  JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL 388 100 - 105 1381-1169 2014/07 [Refereed][Not invited]
   

  The Lewis acidity of phosphate-immobilized anatase TiO2 (phosphate/TiO2) has been studied to develop novel environmentally benign reaction systems. Fourier transform infrared (FT-IR) measurements suggested that most Lewis acid sites on bare and phosphate/TiO2 surface function even in water. phosphate/TiO2 exhibits high catalytic performance for selective 5-(hydroxymethyl)furfural (HMF) production from glucose in THF/water (90/10 vol.%) solution. This is attributed to water-tolerant Lewis acid sites on phosphate/TiO2 that promote step-wise conversion of glucose into HMF. The catalyst was easily recovered from reaction solution by simple decantation or filtration, and can be used repeatedly without significant loss of original activity for subsequent reactions. (c) 2013 Elsevier B.V. All rights reserved.
• Slow Reactant-Water Exchange and High Catalytic Performance of Water-Tolerant Lewis Acids

  Yusuke Koito, Kiyotaka Nakajima, Hisayoshi Kobayashi, Ryota Hasegawa, Masaaki Kitano, Michikazu Hara

  CHEMISTRY-A EUROPEAN JOURNAL 20 (26) 8068 - 8075 0947-6539 2014/06 [Refereed][Not invited]
   

  P-31 nuclear magnetic resonance (NMR) spectroscopic measurement with trimethylphosphine oxide (TMPO) was applied to evaluate the Lewis acid catalysis of various metal triflates in water. The original P-31 NMR chemical shift and line width of TMPO is changed by the direct interaction of TMPO molecules with the Lewis acid sites of metal triflates. [Sc(OTf)(3)] and [In(OTf)(3)] had larger changes in P-31 chemical shift and line width by formation of the Lewis acid-TMPO complex than other metal triflates. It originates from the strong interaction between the Lewis acid and TMPO, which results in higher stability of [Sc(OTf)(3)TMPO] and [In(OTf)(3)TMPO] complexes than other metal triflate-TMPO complexes. The catalytic activities of [Sc(OTf)(3)] and [In(OTf)(3)] for Lewis acid-catalyzed reactions with carbonyl compounds in water were far superior to the other metal triflates, which indicates that the high stability of metal triflate-carbonyl compound complexes cause high catalytic performance for these reactions. Density functional theory (DFT) calculation suggests that low LUMO levels of [Sc(OTf)(3)] and [In(OTf)(3)] would be responsible for the formation of stable coordination intermediate with nucleophilic reactant in water.
• Lewis acid properties of some metal salts for lactic acid formation in water: P-31 NMR spectroscopy with trimethylphosphine oxide as a molecular probe

  Yusuke Koito, Kiyotaka Nakajima, Ryota Hasegawa, Hisayoshi Kobayashi, Masaaki Kitano, Michikazu Hara

  CATALYSIS TODAY 226 198 - 203 0920-5861 2014/05 [Refereed][Not invited]
   

  P-31 NMR spectroscopy was applied to the evaluation of water-tolerant Lewis acid catalysis of various metal triflates and chlorides in water using trimethylphosphine oxide (TMPO) as a probe molecule. Direct interaction of the TMPO molecule with the Lewis acid in water changes the original P-31 NMR chemical shift and line width. ScCl3, Sc(OTf)(3) and In(OTf)(3) exhibit larger changes in the P-31 chemical shift by the formation of a Lewis acid-TMPO complex than other triflates and chlorides. This is due to strong interaction between the Lewis acid and TMPO, which leads to the slow exchange between TMPO and H2O in ScCl3, Sc(OTf)(3) and In(OTf)(3). Lewis acids with large change in the P-31 chemical shift exhibit high catalytic activities for lactic acid formation from 1,3-dihydroxyacetone (1.3-DHA) and pyruvic aldehyde in water: Strong interaction with TMPO on the Lewis acid is a dominant factor for lactic acid formation. (C) 2013 Elsevier B.V. All rights reserved.
• Lewis Acid Catalysis of TiO4 Tetrahedra on Mesoporous Silica in Water

  Hiroshi Shintaku, Kiyotaka Nakajima, Masaaki Kitano, Nobuyuki Ichikuni, Michikazu Hara

  ACS CATALYSIS 4 (4) 1198 - 1204 2155-5435 2014/04 [Refereed][Not invited]
   

  TiO4-deposited mesoporous silica (TDMS) was studied as a water-tolerant solid Lewis acid catalyst. TDMS prepared by a simple postgrafting technique using Ti(i-pro)(4) has a large BET surface area (ca. 450 m(2) g(-1)) and ordered mesoporous structure. Ultraviolet-visible diffuse reflectance spectroscopy (UV-vis DRS), X-ray absorption near edge structure (XANES), and CO adsorption measurements with Fourier transform infrared (FTIR) spectroscopy revealed that isolated TiO4 tetrahedra on TDMS have Lewis acidity, even in the presence of water. Lewis acid centers on TDMS exhibit higher catalytic performance for the hydride transfer of pyruvaldehyde to lactic acid and the Mukaiyama-aldol condensation of benzaldehyde with 1-trimethylsilyloxy-cyclohexene in water than that of conventional heterogeneous and homogeneous Lewis acids, including scandium(III) triflate (Sc(OTf)(3)), which also works even in water. The high catalytic performance of TDMS can be attributed to Lewis acid catalysis of isolated TiO4 tetrahedra in water.
• MoO3/ZrO2 as a Stable, Reusable, and Highly Active Solid Acid Catalyst for Polyester Polyol Synthesis

  Hironobu Oki, Tsuyoshi Morita, Kiyotaka Nakajima, Michikazu Hara

  CHEMISTRY LETTERS 42 (10) 1314 - 1316 0366-7022 2013/10 [Refereed][Not invited]
   

  MoO3/ZrO2, a solid Bronsted acid, exhibited high catalytic performance for the polyesterification of adipic acid with 1,4-butanediol: the conversion of adipic acid exceeds 95% over 8 h. The amount of residual Mo species that induce the hydrolysis of ester bonds with atmospheric vapors was below 3 ppm in the resulting polymer. After reaction, the MoO3/ZrO2 catalyst was easily recovered by simple filtration and used repeatedly without significant loss of original activity for subsequent reactions.
• High photodegradation efficiency of Rhodamine B catalyzed by bismuth silicate nanoparticles

  Jiao Duan, Yan Liu, Xiuhong Pan, Yubo Zhang, Jianding Yu, Kiyotaka Nakajim, Hiroki Taniguchi

  CATALYSIS COMMUNICATIONS 39 65 - 69 1566-7367 2013/09 [Refereed][Not invited]
   

  Bismuth silicate Bi2SiO5 (BSO) nanoparticles were synthesized through a hydrothermal reaction followed by heat treatment. Kinds of characteristic methods were employed to study the phase, morphology and photophysical properties of BSO. The as-prepared BSO exhibited high photocatalytic activity and good photodegradation repeatability in the decomposition of Rhodamine B (RhB) dyes under simulated sunlight irradiation. The experimental results by using different scavengers demonstrate that the photogenerated h(+) and e(-) radicals play an interactional role in the degradation of RhB dyes. BSO nanocrystals could be a promising photocatalysis in water purification industry. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.
• Efficient Conversion of Pyruvic Aldehyde into Lactic Acid by Lewis Acid Catalyst in Water

  Yusuke Koito, Kiyotaka Nakajima, Masaaki Kitano, Michikazu Hara

  CHEMISTRY LETTERS 42 (8) 873 - 875 0366-7022 2013/08 [Refereed][Not invited]
   

  Homogeneous and heterogeneous catalysts with water-tolerant Lewis acids, such as Sc(OTf)(3) and Nb2O5 center dot nH(2)O, effectively promote the hydride transfer of pyruvic aldehyde into lactic acid in water at 383 K, whereas Bronsted acid catalysts cannot function as effective catalysts under mild conditions. NMR measurement in the presence of D2O suggests that the reaction on a Lewis acid catalyst proceeds via the Meerwein-Ponndorf-Verley (MPV) reduction.
• Titania as an Early Transition Metal Oxide with a High Density of Lewis Acid Sites Workable in Water

  Kiyotaka Nakajima, Ryouhei Noma, Masaaki Kitano, Michikazu Hara

  JOURNAL OF PHYSICAL CHEMISTRY C 117 (31) 16028 - 16033 1932-7447 2013/08 [Refereed][Not invited]
   

  Anatase TiO2 prepared by a simple sol-gel reaction of Ti(i-pro)(4) was studied as an early transition metal oxide with Lewis acid sites workable in water. Fourier transform infrared (FT-IR) measurements revealed that TiO2 has a significantly higher density of effective Lewis acid sites in water than niobic acid (Nb2O5 center dot nH(2)O), a heterogeneous water-tolerant Lewis acid, because most Lewis acid sites on TiO2 can maintain Lewis acidity even in the presence of water, which is in contrast to those on Nb2O5 center dot nH(2)O. TiO2 as an easily separable and reusable heterogeneous catalyst that exhibits higher catalytic performance for the transformation of pyruvaldehyde into lactic acid and the allylation of benzaldehyde with tetraallyltin in water than Nb2O5 center dot nH(2)O, and the catalytic activity of TiO2 is comparable to that of scandium trifluoromethanesulfonate (Sc(OTf)(3)), a highly active homogeneous water-tolerant Lewis acid, despite the lower amount of effective Lewis acid sites. The high catalytic performance of TiO2 for these reactions can be attributed to a high density of Lewis acid sites that can function in water.
• Protonated Titanate Nanotubes with Lewis and Bronsted Acidity: Relationship between Nanotube Structure and Catalytic Activity

  Masaaki Kitano, Emiko Wada, Kiyotaka Nakajima, Shigenobu Hayashi, Souichi Miyazaki, Hisayoshi Kobayashi, Michikazu Hara

  CHEMISTRY OF MATERIALS 25 (3) 385 - 393 0897-4756 2013/02 [Refereed][Not invited]
   

  Nanostructured titanate materials with different morphologies, including layered materials, nanosheets, and nanotubes, were examined as solid acid catalysts to elucidate the relationship between the structure and the catalytic properties. The titanate nanotube consists of a scroll-like layered structure derived from lamellar titanate nanosheets that exhibits excellent catalytic performance for the Friedel Crafts alkylation of toluene with benzyl chloride near room temperature, exceeding the activities of layered titanates (H2Ti3O7, H0.7Ti1.825 square O-0.175(4)center dot H2O) and nanosheets that have similar crystal structures to that of the titanate nanotubes. Fourier transform infrared (FT-IR) spectroscopy and P-31 magic angle spinning nuclear magnetic resonance (P-31 MAS NMR) spectroscopy using basic probe molecules have revealed that these titanate materials possess both Bronsted and Lewis acid sites, and the Bronsted acid strength of the titanate nanotubes is higher than that of the titanate nanosheets. The strong Bronsted acidity of the titanate nanotubes is attributed to lattice distortion due to scrolling of the lamellar titanate nanosheet, which is evidenced by Raman spectroscopy and density functional theory calculations. Furthermore, the mesoporous structure of the titanate nanotubes is advantageous for acid catalysis, because the reactant molecules are confined within the nanotubes.
• Electrical Properties of Amorphous Carbon Semiconductor Prepared Using a Naphthalene Precursor

  Yasunori Inoue, Mayo Sugano, Shunsuke Kawakami, Masaaki Kitano, Kiyotaka Nakajima, Hideki Kato, Michikazu Hara

  BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 86 (1) 45 - 50 0009-2673 2013/01 [Refereed][Not invited]
   

  An amorphous carbon (a-C) semiconductor was prepared by the pyrolysis of naphthalene in the presence of AlCI3 under a nitrogen gas flow. Electrical properties, such as the Seebeck coefficient (S) and electrical conductivity (sigma), of the a-C materials were studied as a function of the heat treatment temperature (773-1273 K) and time (5-30 h). The electrical conductivity of a-C increased with the heating temperature. At a heating temperature of 873K, a-C exhibits p-type semiconducting behavior (S = 0.41 mV K-1, a = 2.0 x 10(-5) S cm(-1)) and consists of a mixture of sp(2)-bonded carbon sheets (average sheet size: ca. 1.0 nm) and polycyclic aromatic hydrocarbons (PAR). After prolonged heat treatment (30 h) at 873 K, the electrical conductivity of a-C was increased by a factor of approximately 50 without loss of the semiconductivity (S = 0.20 mV K-1, sigma = 9.6 x 10(-4) S cm(-1)). The increase in the electrical conductivity of a-C is attributed to the decomposition of insulating PAR compounds by the prolonged heat treatment. Thus, precise control of the heating temperature and time has a significant effect on the p-type semiconductivity and electrical conductivity of a-C materials.
• Synthesis and acid catalysis of zeolite-templated microporous carbons with SO3H groups

  Kiichi Fukuhara, Kiyotaka Nakajima, Masaaki Kitano, Shigenobu Hayashi, Michikazu Hara

  PHYSICAL CHEMISTRY CHEMICAL PHYSICS 15 (23) 9343 - 9350 1463-9076 2013 [Refereed][Not invited]
   

  Microporous carbon catalysts with large surface areas (800-1100 m(2) g(-1)) and high densities of SO3H groups (ca. 1.1 mmol g(-1)) were synthesized by sulfonation of zeolite-templated microporous carbon. The resulting SO3H-bearing microporous carbon catalysts exhibited higher catalytic performance for the hydrolysis of cellobiose and the Beckmann rearrangement than conventional solid acid catalysts and non-porous amorphous carbon with SO3H groups. The high catalytic activity of these reusable heterogeneous catalysts can be attributed to the high surface area and microporous structure, which enhance the efficient incorporation and diffusion of reactant molecules from solution to the SO3H groups on the catalysts.
• Effect of preparation conditions on the structural and acid catalytic properties of protonated titanate nanotubes

  Emiko Wada, Masaaki Kitano, Kiyotaka Nakajima, Michikazu Hara

  JOURNAL OF MATERIALS CHEMISTRY A 1 (41) 12768 - 12774 2050-7488 2013 [Refereed][Not invited]
   

  The effect of hydrothermal treatment on the morphological and acid catalytic properties of titanate nanomaterials was examined. Anatase nanoparticles were converted into titanate nanotubes and layered titanate nanorods according to the heating temperature used during the hydrothermal treatment. Fourier transform infrared (FT-IR) spectroscopy measurements and acid-base titrations revealed that all titanate nanomaterials possess Lewis acid sites, whereas Bronsted acid sites are formed after the hydrothermal treatment at temperatures higher than 323 K. At 423 K, titanate nanotubes with an inner diameter of 5 nm were formed, which exhibited the highest catalytic activity for the liquid phase Friedel-Crafts alkylation of aromatics with benzyl chloride or benzyl alcohol. The titanate nanorods prepared at 473 K exhibited Lewis acidity, but had no effective Bronsted acid sites regardless of the high ion-exchange capacity. The high catalytic performance of the titanate nanotubes can be attributed to the presence of a large number of both Lewis and Bronsted acid sites located on the surfaces of the nanotubes.
• sp3-Linked Amorphous Carbon with Sulfonic Acid Groups as a Heterogeneous Acid Catalyst

  Satoshi Suganuma, Kiyotaka Nakajima, Masaaki Kitano, Shigenobu Hayashi, Michikazu Hara

  CHEMSUSCHEM 5 (9) 1841 - 1846 1864-5631 2012/09 [Refereed][Not invited]
   

  SO3H-bearing amorphous carbon prepared from polyvinyl chloride (PVC) is studied as a heterogeneous Bronsted acid catalyst. Sulfonation of partially carbonized PVC produces amorphous carbon consisting of small SO3H-bearing carbon sheets linked by sp3-based aliphatic hydrocarbons. This carbon material exhibits much higher catalytic performance in the hydrolysis of cellobiose than conventional heterogeneous Bronsted acid catalysts with SO3H groups, including SO3H-bearing amorphous carbon derived from cellulose. This can be attributed to a high density of SO3H groups and the fast diffusion of reactants and products enabled by a flexible carbon network.
• Amorphous Carbon with SO3H Groups as a Solid Bronsted Acid Catalyst

  Kiyotaka Nakajima, Michikazu Hara

  ACS CATALYSIS 2 (7) 1296 - 1304 2155-5435 2012/07 [Refereed][Not invited]
   

  Homogeneous Bronsted acid catalysts such as H2SO4 and HCl are used for the production of industrially important. chemicals., However, their use requires, significant energy costs for separation, reuse, and treatment of salt wastes. Alternatively, heterogeneous Bronsted acid catalysts, are promising candidates that can decrease the environmental impact associated with chemical production. In this review, we highlight amorphous carbon bearing SO3H groups as an insoluble Bronsted acid available for various acid-catalyzed reactions.
• Preparation of porous spherical ZrO2-SiO2 composite particles using templating and its solid acidity by H2SO4 treatment

  Shuhei Uchiyama, Toshihiro Isobe, Sachiko Matsushita, Kiyotaka Nakajima, Michikazu Hara, Akira Nakajima

  JOURNAL OF MATERIALS SCIENCE 47 (1) 341 - 349 0022-2461 2012/01 [Refereed][Not invited]
   

  Porous ZrO2-SiO2 composite sphere particles were prepared by impregnating precursor solutions into organic monolith particles, with subsequent calcination in air. The porous spheres possessed uniformly sized pores of around 10 nm. Addition of SiO2-ZrO2 decreased the ZrO2 crystallinity and increased the specific surface area. The acid amount on the surface of the composite spheres was increased by treatment with H2SO4. The acid strength and its amount, including the Lewis/Bronsted acid ratio, depended on the SiO2/ZrO2 ratio and the H2SO4 concentration. The powder treated under an optimum condition exhibited higher solid acidity than the reference solid acid catalyst. The prepared porous SO4 (2-)/ZrO2-SiO2 spheres showed higher saccharization activity than the reference solid acid catalyst did.
• SO3H-bearing mesoporous carbon with highly selective catalysis

  Satoshi Suganuma, Kiyotaka Nakajima, Masaaki Kitano, Hideki Kato, Asako Tamura, Hidesato Kondo, Shinichiro Yanagawa, Shigenobu Hayashi, Michikazu Hara

  MICROPOROUS AND MESOPOROUS MATERIALS 143 (2-3) 443 - 450 1387-1811 2011/09 [Refereed][Not invited]
   

  A SO3H-bearing mesoporous carbon material was investigated as a new type of heterogeneous catalyst. Carbonization of resorcinol-formaldehyde resin at 773 K, followed by sulfonation results in amorphous carbon consisting of graphene with high densities of SO3H (0.9 mmol g(-1)) and phenolic OH (2.0 mmol g(-1)) groups. The mesoporous carbon that has a large surface area (433 m(2) g(-1)) due to uniform mesopores (ca. 10 nm) exhibits remarkable catalytic performance for the selective dimerization of a-methylstyrene (AMS); the selectivity for unsaturated AMS dimers exceeds 99%. This catalysis is attributed to not only the large surface area based on large mesoporosity, but also to preventing intramolecular Friedel-Crafts alkylation. (C) 2011 Elsevier Inc. All rights reserved.
• Synthesis and Characterization of Semiconducting Boron-doped Amorphous Carbon Materials Using an Organic Boron Compound as a Precursor

  Yasunori Inoue, Masaaki Kitano, Kiyotaka Nakajima, Michikazu Hara

  CHEMISTRY LETTERS 40 (4) 410 - 411 0366-7022 2011/04 [Refereed][Not invited]
   

  Boron-doped amorphous carbon was synthesized by polymerizing naphthalene and triphenylborane with subsequent heat treatment by spark plasma sintering. The boron-doped carbon material has negative Seebeck coefficient (-0.22 mV K-1 which indicates the carbon material functions as an n-type semiconductor.
• Nb2O5 center dot nH(2)O as a Heterogeneous Catalyst with Water-Tolerant Lewis Acid Sites

  Kiyotaka Nakajima, Yusuke Baba, Ryouhei Noma, Masaaki Kitano, Junko N. Kondo, Shigenobu Hayashi, Michikazu Hara

  JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 133 (12) 4224 - 4227 0002-7863 2011/03 [Refereed][Not invited]
   

  Niobic acid, Nb2O5 center dot nH(2)O, has been studied as a heterogeneous Lewis acid catalyst. NbO4 tetrahedra, Lewis acid sites, on Nb2O5 center dot nH(2)O surface immediately form NbO4-H2O adducts in the presence of water. However, a part of the adducts can still function as effective Lewis acid sites, catalyzing the allylation of benzaldehyde with tetraallyl tin and the conversion of glucose into 5-(hydroxymethyl)furfural in water.
• Structure and Catalysis of Cellulose-Derived Amorphous Carbon Bearing SO3H Groups

  Kiichi Fukuhara, Kiyotaka Nakajima, Masaaki Kitano, Hideki Kato, Shigenobu Hayashi, Michikazu Hara

  CHEMSUSCHEM 4 (6) 778 - 784 1864-5631 2011 [Refereed][Not invited]
   

  The correlation between catalytic performance and structure of a cellulose-derived and carbon-based solid acid (CCSA), an amorphous carbon bearing SO3H, COOH, and phenolic OH groups, was investigated. Sulfonation of partially carbonized cellulose under a N-2 atmosphere resulted in the formation of a CCSA, which was amorphous carbon consisting of small polycyclic aromatic carbon sheets with a high density of SO3H groups (ca. 2 mmol g(-1)). CCSAs were prepared from carbon precursors, which were obtained at temperatures <= 723 K, and exhibited a high catalytic performance for the esterification of acetic acid with ethanol and for the hydrolysis of cellobiose, although the surface areas were small (<5 m(2)g(-1)). In contrast, CCSAs, which were prepared from carbon precursors obtained at >= 823 K, exhibited much lower catalytic activities for both reactions, although the CCSAs had sufficient amounts of SO3H groups. Structural analyses, including spectroscopic analysis of CCSAs with adsorbed probe molecules, revealed that cross-linking between the polycyclic aromatic carbon sheets caused the sharp decrease in activity.
• Preparation of Crystallized Mesoporous Ta3N5 Assisted by Chemical Vapor Deposition of Tetramethyl Orthosilicate

  Takashi Hisatomi, Michiko Otani, Kiyotaka Nakajima, Kentaro Teramura, Yoko Kako, Daling Lu, Tsuyoshi Takata, Junko N. Kondo, Kazunari Domen

  CHEMISTRY OF MATERIALS 22 (13) 3854 - 3861 0897-4756 2010/07 [Refereed][Not invited]
   

  Ordered mesoporous Ta3N5 with crystalline thin-wall structures was successfully obtained from an amorphous mesoporous Ta2O5 by nitridation at 1073 K under flowing NH3 (500 mL min(-1)). The silica layer that was deposited on the pore wall by chemical vapor deposition of tetramethyl orthosilicate and later easily removed by alkaline treatment was indispensible for preserving the original mesostructure against phase transition during crystallization and nitridation. Mesoporous Ta3N5 has a mesoporosity and mesoporous structure similar to that of amorphous Ta2O5 and crystallized pore walls composed of orthorhombic Ta3N5. The BET surface area, pore size, and wall thickness of mesoporous Ta3N5 were approximately 100 m(2) g(-1), 4 nm, and 2 nm, respectively. Mesoporous Ta3N5 loaded with Pt nanoparticles was active for photocatalytic H-2 evolution from an aqueous methanol solution under visible light (lambda > 420 nm). The photocatalytic activity of mesoporous Ta3N5 was three times that of conventional bulk Ta3N5 under the same reaction conditions because of the former's thin crystallized pore wall (ca. 2 nm in thickness), which enabled efficient charge transfer of photoexcited electrons and holes to surface active sites.
• Structure and Acid Catalysis of Mesoporous Nb2O5 center dot nH(2)O

  Kiyotaka Nakajima, Tsuyoshi Fukui, Hideki Kato, Masaaki Kitano, Junko N. Kondo, Shigenobu Hayashi, Michikazu Hara

  CHEMISTRY OF MATERIALS 22 (11) 3332 - 3339 0897-4756 2010/06 [Refereed][Not invited]
   

  Mesoporous Nb(2)O(5 center dot)nH(2)O was prepared using amphiphilic block copolymers (L64, P103, and P123) that acted as structure-directing agents. The pore size in the prepared materials increased with increasing molecular weight of the block copolymer at the same weight percentage of ethylene oxide groups in the following order: P123 > P103 > L64. The obtained samples had BET surface areas of 250-350 m(2) g(-1) and pore volumes of 0.2-0.4 mL g(-1), which are larger than that of bulk Nb2O5 center dot nH(2)O. Fourier transform-infrared (FT-IR) analysis using CO and pyridine as basic probe molecules indicated no significant differences in the acid strength of the Lewis and Bronsted acid sites among mesoporous, supermicroporous, and bulk Nb2O5 center dot nH(2)O. Mesoporous Nb2O5 center dot nH(2)O exhibits much higher catalytic activity for the hydrolysis of cellobiose than supermicroporous and bulk Nb2O5 center dot nH(2)O. However, no significant difference was observed between the activity of bulk and mesoporous Nb2O5 center dot nH(2)O samples for Friedel-Crafts alkylation. The results suggest that mesopores consisting of hydrophilic niobium oxide are advantageous for hydrophilic reactions, but not hydrophobic reactions.
• Synthesis and acid catalysis of cellulose-derived carbon-based solid acid

  Satoshi Suganuma, Kiyotaka Nakajima, Masaaki Kitano, Daizo Yamaguchi, Hideki Kato, Shigenobu Hayashi, Michikazu Hara

  SOLID STATE SCIENCES 12 (6) 1029 - 1034 1293-2558 2010/06 [Refereed][Not invited]
   

  SO3H-bearing amorphous carbon, prepared by partial carbonization of cellulose followed by sulfonation in fuming H2SO4, was applied as a solid catalyst for the acid-catalyzed hydrolysis of beta-1,4 glucan, including cellobiose and crystalline cellulose. Structural analyses revealed that the resulting carbon material consists of graphene sheets with 1.5 mmol g(-1) of SO3H groups, 0.4 mmol g(-1) of COOH, and 5.6 mmol g(-1) of phenolic OH groups. The carbon catalyst showed high catalytic activity for the hydrolysis of beta-1,4 glycosidic bonds in both cellobiose and crystalline cellulose. Pure crystalline cellulose was not hydrolyzed by conventional strong solid Bronsted acid catalysts such as niobic acid, Nafion (R) NR-50, and Amberlyst-15, whereas the carbon catalyst efficiently hydrolyzes cellulose into water-soluble saccharides. The catalytic performance of the carbon catalyst is due to the large adsorption capacity for hydrophilic reactants and the adsorption ability of beta-1,4 glucan, which is not adsorbed to other solid acids. (C) 2010 Published by Elsevier Masson SAS.
• Protonated Titanate Nanotubes as Solid Acid Catalyst

  Masaaki Kitano, Kiyotaka Nakajima, Junko N. Kondo, Shigenobu Hayashi, Michikazu Hara

  JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 132 (19) 6622 - + 0002-7863 2010/05 [Refereed][Not invited]
   

  Protonated titanate nanotubes are demonstrated to function as a highly active solid Lewis acid catalyst even near room temperature. The high catalytic activity for the reaction can be attributed to the unique nanotube structure, which contains both Bronsted and Lewis acid sites.
• Magnetism of nanographene network influenced by the interaction with acid species

  T. Enoki, S. Tsuge, S. Hao, K. Takai, K. Nakajima, M. Hara, F. Y. Kang

  JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 71 (4) 534 - 538 0022-3697 2010/04 [Refereed][Not invited]
   

  The magnetism of nanographite (stacked nanographene sheets)-based nanoporous carbon is investigated in relation to the interaction with acid guest species. The concentration of the localized spins of non-bonding pi-electron state (edge state) localized in the nanographene edges decreases upon the sulfonation of nanographene edges through charge-transfer interaction with sulfonic groups. The sulfonation of nanographene edges enhances the hydrophilic nature of the edges, resulting in the easiness in the water adsorption into the nanopores. This enhances the mechanical compression effect of water molecules condensed in the nanopores on the nanographite domains, resulting in the decrease in the spin concentration. The change in the magnetism upon water uptake reveals ferrimagnetic nature of individual nanographene sheets. The adsorption of HCl having no oxidation ability shows a mechanical effect on the edge-state spins similar to water adsorption. The spin concentration is reduced in two-step manner by the charge-transfer interaction with guest concentrated HNO(3) that is strong oxidant. In the presence of H(2)O molecules in diluted HNO(3) the cooperation of mechanical and charge-transfer interactions creates also a two-step change in the magnetism. (C) 2009 Elsevier Ltd. All rights reserved.
• Preparation of a Sulfonated Porous Carbon Catalyst with High Specific Surface Area

  Masaaki Kitano, Keisuke Arai, Atsushi Kodama, Tsutomu Kousaka, Kiyotaka Nakajima, Shigenobu Hayashi, Michikazu Hara

  CATALYSIS LETTERS 131 (1-2) 242 - 249 1011-372X 2009/08 [Refereed][Not invited]
   

  A sulfonated (SO3H-bearing) carbon catalyst with mesoporous structure and high specific surface area is successfully prepared by impregnating the cellulosic precursor (wood powder) with ZnCl2 prior to activation and sulfonation. The specific surface area of the porous carbon catalyst thus prepared is also found to increase with carbonization temperature to a maximum of 1,560 m(2) g(-1) at ca. 773 K. Structural analyses reveal that the porous carbon catalysts carbonized at temperatures higher than 723 K contain high densities of micro- and mesopores. The porous carbon catalyst exhibits high catalytic performance for the esterification of acetic acid (343 K), the activity for which is dependent only on the acid density. The porous carbon catalyst also exhibits high catalytic activity for the benzylation of toluene, whereas non-porous sulfonated carbon has very limited activity for this reaction. The activity for the benzylation of toluene is dependent on both the specific surface area and the acid density of the sulfonated porous carbon catalyst.
• Adsorption-Enhanced Hydrolysis of beta-1,4-Glucan on Graphene-Based Amorphous Carbon Bearing SO3H, COOH, and OH Groups

  Masaaki Kitano, Daizo Yamaguchi, Satoshi Suganuma, Kiyotaka Nakajima, Hideki Kato, Shigenobu Hayashi, Michikazu Hara

  LANGMUIR 25 (9) 5068 - 5075 0743-7463 2009/05 [Refereed][Not invited]
   

  The reaction mechanism of the hydrolysis of cellulose by a carbon-based solid acid, amorphous carbon containing graphene sheets bearing SO3H, COOH, and phenolic OH groups, has been investigated in detail through the hydrolysis of water-soluble beta-1,4-glucan. Whereas a range of solid strong Bronsted acid catalysts (inorganic oxides with acidic OH groups, SO3H-bearing resins, and the carbon-based solid acid) can hydrolyze the beta-1,4-glycosidic bonds in cellobiose (the shortest water-soluble beta-1,4-glucan), the tested solid acids except for the carbon material, consisting of conventional solid acids, cannot function as effective catalysts for the hydrolysis of cellohexaose (a long-chain water-soluble beta-1,4-glucan). However, the carbon material exhibits remarkable catalytic performance for the hydrolysis of cellohexaose: the turnover frequency (TOF) of SO3H groups in the carbon material exceeds ca. 20 times those of the conventional solid acids, reaching that of sulfuric acid, which is the most active catalyst. Experimental results revealed that inorganic oxides with acidic OH groups are not acidic enough to decompose the hydrogen and beta-1,4-glycosidic bonds in cellohexaose molecules aggregated by strong hydrogen bonds as well as cellulose and that the SO3H groups of the resins that do not adsorb beta-1,4-glucan are unable to attack the hydrogen and beta-1,4-glycosidic bonds in cellohexaose molecules effectively. In contrast, the carbon material is capable of adsorbing beta-1,4-glucan by phenolic OH or COOH groups in the carbon material, and SO3H groups bonded to the carbon therefore function as effective active sites for both decomposing the hydrogen bonds and hydrolyzing the beta-1,4-glycosidic bonds in the adsorbed long-chain water-soluble beta-1,4-glucan aggregate. These results suggest that the synergetic combination of high densities of the functional groups bonded to amorphous carbon causes the efficient hydrolysis of beta-1,4-glucan, including cellulose, on the carbon material.
• Hydrolysis of Cellulose by a Solid Acid Catalyst under Optimal Reaction Conditions

  Daizo Yamaguchi, Masaaki Kitano, Satoshi Suganuma, Kiyotaka Nakajima, Hideki Kato, Michikazu Hara

  JOURNAL OF PHYSICAL CHEMISTRY C 113 (8) 3181 - 3188 1932-7447 2009/02 [Refereed][Not invited]
   

  The hydrolysis of cellulose with a highly active solid acid catalyst, a carbon material bearing SO3H, COOH, and OH groups, was investigated at 323-393 K using an artificial neural network (ANN) and a response surface methodology (RSM). The ANN models developed for experimental design accurately reflect the novel solid-solid interface catalysis. The ANN models and RSM revealed that the amount of water dominates the hydrolysis reaction as well as cellulose saccharification by concentrated sulfuric acid, a conventional saccharification method. The correlations of the reaction and each parameter are discussed on the basis of the reaction mechanism, ANN, and RSM.
• Amorphous Carbon Bearing Sulfonic Acid Groups in Mesoporous Silica as a Selective Catalyst

  Kiyotaka Nakajima, Mai Okamura, Junko N. Kondo, Kazunari Domen, Takashi Tatsumi, Shigenobu Hayashi, Michikazu Hara

  CHEMISTRY OF MATERIALS 21 (1) 186 - 193 0897-4756 2009/01 [Refereed][Not invited]
   

  Sulfonic acid group (SO3H)-bearing amorphous carbon/mesoporous silica composites were studied for use as solid acid catalysts. Sugar-derived amorphous carbon with SO3H cannot catalyze hydrophobic acid-catalyzed reactions, such as the dimerization of alpha-methyl styrene, because of the small surface area. However, SO3H-bearing sugar-derived amorphous carbon supported on mesoporous silica exhibits remarkable catalytic performance for the dimerization of alpha-methylstyrene. Under optimal conditions, the selectivity of the composite catalysts for unsaturated dimers exceeds 98%. Structural and reaction analyses revealed that SO3H-bearing carbon particles with large surface areas are formed in the mesopores and prevent intramolecular Friedel-Crafts alkylation, resulting in high catalytic activity.
• Synthesis and optical properties of 2,6-anthracene-bridged periodic mesostructured organosilicas

  Yasutomo Goto, Kiyotaka Nakajima, Norihiro Mizoshita, Masahiko Suda, Natsuko Tanaka, Takeru Hasegawa, Toyoshi Shimada, Takao Tani, Shinji Inagaki

  MICROPOROUS AND MESOPOROUS MATERIALS 117 (3) 535 - 540 1387-1811 2009/01 [Refereed][Not invited]
   

  2,6-Bis(triethoxysilyl)anthracene was first synthesized by rhodium-catalyzed disilylation of 2,6-bis(trifluoromethanesulfonyloxy)anthracene with triethoxysilane. Using the new precursor, anthracene-bridged periodic mesostructured organosilicas were obtained without cleavage of the Si-C bondings. The anthracene-silica hybrids showed absorption at near ultraviolet region and blue-green fluorescence with a quantum yield of 0.13-0.15. The absorption and fluorescence behaviors of the 2.6-anthracene-silica hybrid film were compared with those of the previously reported 9,10-anthracene-silica hybrid film. Their absorbances Suggest that the 2,6-anthracene groups were packed more densely than the 9,10-anthracene groups in the mesoporous frameworks due to smaller steric hindrance. In spite of the densely packed structure, the 2.6-anthracene-silica hybrid film showed fluorescence emission at shorter wavelengths and a higher quantum yield than those of the 9,10-anthracene-silica hybrid film, suggesting relatively weak interaction between the anthracene groups in the framework because of restriction of intramolecular rotation motion for Substitution at 2,6-positions of anthracene. Dilution of the anthracene groups in the framework with trimethoxysilane promoted monomeric fluorescence and an increase of its quantum yield up to 0.18. (c) 2008 Elsevier Inc. All rights reserved.
• A Periodic Mesoporous Organosilica-Based Donor-Acceptor System for Photocatalytic Hydrogen Evolution

  Masataka Ohashi, Masao Aoki, Ken-ichi Yamanaka, Kiyotaka Nakajima, Tetsu Ohsuna, Takao Tani, Shinji Inagaki

  CHEMISTRY-A EUROPEAN JOURNAL 15 (47) 13041 - 13046 0947-6539 2009 [Refereed][Not invited]
   

  A new solid-sate donor-acceptor system based on periodic mesoporous organosilica (PMO) has been constructed. Viologen (Vio) was covalently attached to the framework of a biphenyl (Bp)-bridged PMO. The diffuse reflectance spectrum showed the formation of charge-transfer (CT) complexes of Bp in the framework with Vio in the mesochannels. The transient absorption spectra upon excitation of the CT complexes displayed two absorption bands due to radical cations of Bp and Vio species, which indicated electron transfer from Bp to Vio. The absorption bands slowly decayed with a half-decay period of approximately 10 mu s but maintained the spectral shape, thereby suggesting persistent charge separation followed by recombination. To utilize the charge separation for photocatalysis, Vio-Bp-PMO was loaded with platinum and its photocatalytic performance was tested. The catalyst successfully evolved hydrogen with excitation of the CT complexes in the presence of a sacrificial agent. In contrast, reference catalysts without either Bp-PMO or Vio gave no or little hydrogen generation, respectively. In addition, a homogeneous solution system of Bp molecules, methylviologen, and. colloidal platinum also evolved no hydrogen, possibly due to a weaker electron-donating feature of molecular Bp than that of densely packed Bp in Bp-PMO. These results indicated that densely packed Bp and Vio are essential for hydrogen evolution in this system and demonstrated the potential of PMO as the basis for donor-acceptor systems suitable for photocatalysis.
• Hydrolysis of cellulose by amorphous carbon bearing SO3H, COOH, and OH groups

  Satoshi Suganuma, Kiyotaka Nakajima, Masaaki Kitano, Daizo Yamaguchi, Hideki Kato, Shigenobu Hayashi, Michikazu Hara

  JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 130 (38) 12787 - 12793 0002-7863 2008/09 [Refereed][Not invited]
   

  The hydrolysis of cellulose into saccharides using a range of solid catalysts is investigated for potential application in the environmentally benign saccharification of cellulose. Crystalline pure cellulose is not hydrolyzed by conventional strong solid Bronsted acid catalysts such as niobic acid, H-mordenite, Nafion and Amberlyst-15, whereas amorphous carbon bearing SO3H, COOH, and OH function as an efficient Catalyst for the reaction. The apparent activation energy for the hydrolysis of cellulose into glucose using the carbon catalyst is estimated to be 110 kJ mol(-1), smaller than that for sulfuric acid under optimal conditions (170 kJ mol(-1)). The carbon catalyst can be readily separated from the saccharide solution after reaction for reuse in the reaction without loss of activity. The catalytic performance of the carbon catalyst is attributed to the ability of the material to adsorb beta-1,4 glucan, which does not adsorb to other solid acids.
• Environmentally benign production of chemicals and energy using a carbon-based strong solid acid

  Kiyotaka Nakajima, Michikazu Haraw, Shigenobu Hayashi

  JOURNAL OF THE AMERICAN CERAMIC SOCIETY 90 (12) 3725 - 3734 0002-7820 2007/12 [Refereed][Not invited]
   

  This paper reviews amorphous carbon bearing sulfonic acid groups as an efficient solid acid catalyst for the production of various chemicals. The material is produced by the sulfonation of incompletely carbonized organic carbon to yield an insoluble, stable, and inexpensive catalyst with acid catalytic activity comparable to that of sulfuric acid (H2SO4). The carbon material can also be readily separated from liquid products by decantation or filtration, and can be repeatedly reused without any decrease in activity. As a replacement for H2SO4 in industrial chemical production, a carbon-based solid acid catalyst thus has the potential to substantially reduce energy consumption and waste generation. The carbon catalyst also converts crude vegetable oils into biodiesel in a one-step process, demonstrating the potential utility of this material in a wide range of catalytic processes. The remarkable catalytic activity of this material is attributable to the incorporation of reactants into the bulk structure and the high density of strongly acidic SO3H sites.
• A stable mesoporous catalyst with highly ordered structure

  Junko N. Kondo, Kiyotaka Nakajima, Ikuyoshi Tomita, Kazunari Domen

  Materials Science Research Journal 1 (1/2) 69 - 97 1935-2441 2007 [Refereed][Invited]
  
• Development of highly active SO3H-modified hybrid mesoporous catalyst

  Kiyotaka Nakajima, Ikuyoshi Tomita, Michikazu Hara, Shigenobu Hayashi, Kazunari Domen, Junko N. Kondo

  CATALYSIS TODAY 116 (2) 151 - 156 0920-5861 2006/08 [Refereed][Not invited]
   

  Ethenylene groups on the framework of hybrid mesoporous ethenylene-silica (HME) were successfully modified by a two-step chemical modification (Diels-Alder reaction, sulfonation) to obtain hybrid mesoporous solid acid catalyst. The pendant phenylene groups were first introduced at the ethenylene sites on the surface by the Diels-Alder reaction with benzocyclobutene. The introduced phenylene groups were then sulfonated by simple treatment with concentrated H2SO4. The successful formation of phenylene-sulfonic acid groups at the ethylene sites was confirmed by C-13 and Si-29 nuclear magnetic resonance (NMR) analysis. X-ray diffraction (XRD) measurements and N-2 adsorption analysis revealed the preservation of the original mesoscopic ordering and mesoporosity after the modification. The resulting material exhibited high activity for various acid-catalyzed reactions and can be used repeatedly without deactivation. (C) 2006 Elsevier B.V. All rights reserved.
• Synthesis of crystallized mesoporous transition metal oxides by silicone treatment of the oxide precursor

  Nao Shirokura, Kiyotaka Nakajima, Akira Nakabayashi, Daling Lu, Michikazu Hara, Kazunari Domen, Takashi Tatsumi, Junko N. Kondo

  CHEMICAL COMMUNICATIONS (20) 2188 - 2190 1359-7345 2006/05 [Refereed][Not invited]
   

  Ordered mesoporous transition metal oxides were successfully crystallized after strengthening the amorphous framework by a silica layer, which efficiently protected the original mesoporous structure against crystallization and resulting mass transfer.
• A Stable and Highly Active Mesoporous Solid Acid Catalyst

  Kiyotaka Nakajima, Ikuyoshi Tomita, Michikazu Hara, Shigenobu Hayashi, Kazunari Domen, Junko N. Kondo

  Advanced Materials 17 (15) 1839 - 1842 0935-9648 2005/07 [Refereed][Not invited]
  
• Synthesis and Application of Thermally Stable Mesoporous Ta2O5 Photocatalyst for Overall Water Decomposition

  Kiyotaka Nakajima, Daling Lu, Michikazu Hara, Kazunari Domen, Junko N. Kondo

  Studies in Surface Science and Catalysis 158 1485 - 1492 2005/06 [Refereed][Not invited]
  
• Synthesis of highly ordered mesoporous tantalum oxide

  Kiyotaka Nakajima, Michikazu Hara, Kazunari Domen, Junko N. Kondo

  Chemistry Letters 34 (3) 394 - 395 0366-7022 2005/03/05 [Refereed][Not invited]
   

  The pore arrangement of mesoporous tantalum oxide prepared with a block copolymer surfactant as a structure-directing agent is remarkably improved by optimizing the amounts of metal source and water content. In contrast to the wormhole-like pore structure observed in the mesoporous tantalum oxide prepared under standard conditions, a highly ordered mesoporous structure is formed under optimized conditions. Copyright © 2005 The Chemical Society of Japan.
• Synthesis and application of thermally stable mesoporous Ta2O5 photocatalyst for overall water decomposition

  K Nakajima, D Lu, M Hara, K Domen, JN Kondo

  MOLECULAR SIEVES: FROM BASIC RESEARCH TO INDUSTRIAL APPLICATIONS, PTS A AND B 158 1477 - 1484 0167-2991 2005 [Refereed][Not invited]
   

  Thermally stable mesoporous Ta2O5 is prepared by a sol-gel technique using a neutral block copolymer P123 as a template. N-2 adsorption analysis reveals that this material has a BFT surface area of 145 m(2.)g(-1), mesopore diameter of 3.5 nm, and mesopore Volume or 0.20 mL(.)g(-1) The wall thickness of rnesoporous Ta2O5 is estimated to be ca. 3.5 mm based oil the repeat distance in the X-ray diffraction Pattern and the pore diameter. The formation of thicker walls results in higher thermal stability than tantalum oxides prepared by a ligand-assisted templating method. The NiO-Ioaded mesoporous Ta2O5 photocatalyst exhibits high photocatalytic activity for the decomposition of water under ultraviolet (UV) light, comparable to that of crystallized nonporous Ta2O5 particles. The influence of wall thickness oil the activity or some mesoporous Ta2O5 photocatalysts is discussed.
• Preparation of crack-free, transparent, nanoporous niobium oxide film with crystalline structure by evaporation-induced self-assembly (EISA) process

  K Nakajima, N Shirokura, B Lee, JN Kondo, M Hara, K Domen

  NANOPOROUS MATERIALS IV 156 321 - 326 0167-2991 2005 [Refereed][Not invited]
   

  Nanoporous niobium oxide thin film with wormhole pore structure is prepared by combining a dip-coating method and an evaporation-induced self-assembly (EISA) technique. The template of nanopore and inorganic source used are commercially available neutral block copolymer P85, HO(CH2CH2O)(26)(CH2CH(CH3)O)(39)(CH2CH2O)(26)H, and niobium pentachloride. The Crystallized nanoporous niobium oxide film is successfully fabricated by a two-step calcination process: the first calcination process removes the template and forms a nanoporous film with amorphous framework, and the second calcinations step crystallizes the framework with random pore originated from the voids among the single crystalline domains. Scanning electron microscopy (SEM) reveals that the obtained material is a crack-free nanoporous film with the thickness of c.a. 200-300 nm. The crystal oxide framework and nanoporous structure is characterized by x-ray diffraction (XRD) and transmission electron microscopy (TEM) analysis in details.
• Preparation and crystallization characteristics of mesoporous TiO2 and mixed oxides

  JN Kondo, T Yamashita, K Nakajima, DL Lu, M Hara, K Domen

  JOURNAL OF MATERIALS CHEMISTRY 15 (20) 2035 - 2040 0959-9428 2005 [Refereed][Not invited]
   

  Mesoporous TiO2 and mixed Ti oxides are prepared by a modified sol-gel method using a block copolymer as a mesoporous template. Calcination of the material at 400 degrees C for template removal is shown to induce crystallization of pure TiO2, resulting in the destruction of the original mesoporous structure and the development of larger pores (7.5 nm) as inter-particle voids. The addition of tri-, tetra- and penta-valent metals (Al, Zr and Nb) to Ti oxide in the amorphous phase in the ratio Ti : M = 1 : 2 (M = Al, Zr or Nb) increases the thermal stability of the material by elevating the crystallization temperature above that for pure TiO2. The formation of Al2TiO5, TiZr2O6 and TiNb2O7 crystal phases without phase separation is confirmed in these materials, demonstrating the homogeneous mixing of TiO2 and the additive element at the atomic level. The mixed mesoporous oxides are thermally stable at 400 degrees C, although the porous structure is still destroyed due to crystallization. Thus, a homogeneous mixture of Ti with another element ( Al, Zr or Nb) in mesoporous amorphous Ti-mixed oxide is observed.
• Stable and highly active Ph-SO3H functionalized hybrid mesoporous acid catalyst

  K Nakajima, Tomita, I, M Hara, S Hayashi, K Domen, JN Kondo

  MOLECULAR SIEVES: FROM BASIC RESEARCH TO INDUSTRIAL APPLICATIONS, PTS A AND B 158 1485 - 1492 0167-2991 2005 [Refereed][Not invited]
   

  Etherlylene groups within the silicate framework of hybrid mesoporous ethertylene-silica (HME) are successfully modified by a two-step chemical modification process to produce a sulfonic-acid functionalized hybrid mesoporous catalyst. The pendant phenylene groups are first stabilized at the ethenylene sites On the surface by the Diels-Alder reaction with benzocyclobutene. Sulfonation of the introduced phenylene groups is then achieved by simple treatment in concentrated H2SO4. The successful formation of plicilylene-SO3H groups at the ethylene sites is confirmed by C-13 and Si-29 nuclear magnetic resonance (NMR) analysis, and preservation of the original p6mm mesoporous arrangement is confirmed by X-ray diffraction measurements. The resulting material exhibits high activity for various acid-catalyzed reactions and can be Used repeatedly without deactivation.
• Triblock copolymer-assisted synthesis of a hybrid mesoporous ethenylene-silica with 2D hexagonal structure and large pores

  K Nakajima, Tomita, I, M Hara, S Hayashi, K Domen, JN Kondo

  JOURNAL OF MATERIALS CHEMISTRY 15 (24) 2362 - 2368 0959-9428 2005 [Refereed][Not invited]
   

  Highly ordered hybrid mesoporous ethenylene-silica is successfully synthesized from bis(triethoxysilyl) ethylene under acidic conditions using triblock copolymer P123 as a structure-directing agent. The mesoporous material is confirmed to exhibit a two-dimensional, hexagonal structure based on analyses by powder X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The material is also shown to have a uniform pore size distribution with a mean diameter of 6.3 nm, with a BET surface area of 705 m(2) g(-1) and pore volume of 0.84 mL g(-1). The incorporation of ethenylene groups within the silicate framework is confirmed by solid-state nuclear magnetic resonance (NMR) measurements, and the formation of an organic-inorganic network composed of the O1.5Si-CH=CH-SiO1.5 unit is strongly suggested by C-13 and Si-29 NMR analyses. Quantitative analysis of the available ethenylene content by liquid-phase bromination followed by iodometric titration indicates that approximately 20% of the constituent ethenylene is exposed at the surface and available for chemical reaction.
• Synthesis, mesostructure, and photocatalysis of a highly ordered and thermally stable mesoporous Mg and Ta mixed oxide

  JN Kondo, M Uchida, K Nakajima, DL Lu, M Hara, K Domen

  CHEMISTRY OF MATERIALS 16 (22) 4304 - 4310 0897-4756 2004/11 [Refereed][Not invited]
   

  An ordered (2D-hexagonal) mesoporous Mg and Ta mixed oxide (Mg-Ta oxide) is successfully prepared. The mesoporous Mg-Ta oxide is stable after calcination at 773 K for 30 h, and has a BET surface area of 123 m(2) g(-1), pore size of 5.0 nm, and wall thickness of 2.8 nm. Removal of the template by washing in water results in a wormhole-like microporous material with a BET surface area of 424 m(2) g(-1). The ordered mesoporous structure is not achieved after aging alone (313 K), but becomes complete through structural rearrangement in the initial stage of calcination (<423 K) for template removal. The presence of the template during calcination is found to be indispensable, and the ordered mesoporous material is not obtained when the template is removed by washing with water prior to calcination. Although the inorganic phase is amorphous, the photocatalytic activity for overall water decomposition over the 2D hexagonal mesoporous Mg-Ta oxide is much higher than over crystallized MgTa2O6. The highest activity (ca. 100 mumol h(-1) for H-2 and 50 mumol h(-1) for O-2) is attained by loading with 0.1 wt % NiO followed by reduction and reoxidation pretreatment.
• Synthesis of Highly Ordered Hybrid Mesoporous Material Containing Etenylene (-CH=CH-) within the Silicate Framework

  Kiyotaka Nakajima, Daling Lu, Junko N. Kondo, Ikuyoshi Tomita, Shinji Inagaki, Michikazu Hara, Shigenobu Hayashi, Kazunari Domen

  Chemistry Letters 32 (10) 950 - 951 0366-7022 2003/10/05 [Refereed][Not invited]
   

  A hybrid mesoporous material containing etenylene in a two-dimensional, hexagonally arranged mesoporous silicate framework with long-range symmetry is successfully synthesized. Quantitative analysis of the reactive etenylene groups within the silicate framework indicates that approximately 30% of the etenylene is exposed at the surface and is available for further modification.

MISC

• Ordered and Disordered Metal Oxide for Biomass Conversion, Hyperordered Structures in Materials

  Daniele Padovan, Kiyotaka Nakajima  The Materials Research Society Series  433  -451  2024/10  [Refereed][Invited]
  
• 草木から創るプラスチック原料-固体触媒によるバイオマス由来フラン化合物の官能基変換-

  大須賀遼太, 中島清隆  化学  79-  72  -73  2024/09  [Not refereed][Invited]
  
• 金属酸化物表面の超秩序構造を利用した触媒反応：再生可能炭素資源の利活用

  大須賀遼太, 中島清隆  セラミックス  58-  531  -534  2023/08  [Not refereed][Invited]
  
• 固体触媒が先導する非可食バイオマスの利活用

  中島清隆, 福岡淳  化学と教育  66-  (2)  72  -75  2018/02  [Refereed][Invited]
  
• 固体触媒による青果物の鮮度保持 : メソポーラスシリカ担持白金触媒による低濃度エチレンの酸化分解

  中島清隆, 福岡淳  化学と工業  70-  (11)  1003  -1005  2017/11  [Refereed][Invited]
  
• メソポーラスシリカ担持白金触媒による低温エチレン酸化と冷蔵庫触媒としての応用

  石戸信広, 中島清隆, 福岡淳  工業材料  65-  (3)  49  -53  2017/03  [Not refereed][Invited]
  
• Effects of crystalline structure of Nb₂O₅ and its solid acidity on the catalytic activity for gas/liquid phase oxidation over Au/Nb₂O₅ catalysts

  村山徹, GUPTA Navneet Kumar, 中島清隆, 福岡淳, 春田正毅  触媒討論会講演予稿集  119th-  2017
• 金ナノ粒子担持触媒を用いたフルフラール酸化

  村山徹, GUPTA Navneet Kumar, 中島清隆, 福岡淳, 春田正毅  触媒討論会討論会A予稿集  120th-  2017
• 担持金属触媒による低温エチレン酸化

  中島清隆, 福岡淳  ペトロテック  40-  (1)  25  -29  2017/01  [Refereed][Invited]
  
• 担持白金触媒による低温エチレン酸化

  中島清隆, 福岡淳  触媒  59-  (1)  25  -31  2017/01  [Refereed][Invited]
  
• メソポーラスシリカ担持白金触媒による低温エチレン酸化

  中島清隆, 福岡淳  セラミックス  52-  (1)  6  -11  2017/01  [Refereed][Invited]
  
• 固体ルイス酸による水中での糖変換反応

  中島 清隆  触媒  58-  (4)  218  -221  2016/01  [Refereed][Invited]
  
• Lactic acid formation from triose sugar in water over crystalline niobic acid

  Nakajima Kiyotaka, Murayama Tohru, Ueda Wataru  Proc. JPI  2016-  (0)  130  -130  2016  [Not refereed][Not invited]
   

  水溶性ニオブ錯体を水熱処理することによって結晶性のニオブ酸が合成できる。得られたニオブ酸はブレンステッド酸とルイス酸を有しており、それらの酸触媒サイトは吸着水存在下において塩基性プローブ分子と相互作用することができる。この触媒をトリオース水溶液に加えて加熱したところ、約80%の収率で乳酸が生成した。高い触媒活性は水中で機能するルイス酸およびブレンステッド酸の有効酸量が大きいためであると考えられる。
• 固体ルイス酸による水中バイオマス変換－植物から必須化学品原料の創生－

  中島 清隆  化学と工業  68-  (10)  951  -952  2015/10  [Refereed][Invited]
  
• メソポーラスシリカ担持白金触媒による低温エチレン分解

  中島清隆, 福岡淳  ゼオライト学会誌  32-  (4)  113  -121  2015/10  [Refereed][Invited]
  
• Unique Catalysis of Sn-containing zeolite in water

  Kiyotaka Nakajima  Shokubai  54-  (6)  410  -410  2012/06  [Not refereed][Invited]
  
• Solid acid catalysis of protonated titanate nanotube

  北野政明, 和田江美子, 中島清隆, 野村淳子, 林繁信, 原亨和  Shokubai  52-  366  -368  2010/03  [Refereed][Not invited]
  
• Hydrolysis of cellooligosaccharide using carbon-based solid acid catalyst

  KITANO Masaaki, YAMAGUCHI Daizo, SUGANUMA Satoshi, NAKAJIMA Kiyotaka, KATO Hideki, HAYASHI Shigenobu, HARA Michikazu  触媒  50-  (6)  468  -470  2008/09/10  [Not refereed][Not invited]
  
• 協奏的な自己組織化によるメソポーラス有機シリカの合成

  中島清隆, 稲垣伸二  マテリアルステージ  6-  (10)  84  2007/06  [Not refereed][Invited]
  
• くり返し使えるメソポーラス固体酸触媒

  野村淳子, 中島清隆  ゼオライト  23-  (4)  125  -135  2006/06  [Not refereed][Invited]
  
• Repeatedly reusable mesoporous solid acid catalyst

  JUNKO NOMURA, KIYOTAKA NAKAJIMA  23-  (4)  125  2006  [Not refereed][Not invited]
  
• 規則性有機・無機ハイブリッドメソ多孔体の機能化

  中島 清隆, 冨田 育義, 野村 淳子  化学工業  56-  (9)  24  -31  2005/06  [Not refereed][Invited]
  
• スルホン酸基を導入した新規ハイブリッド型メソポーラス材料の調製と酸触媒能

  中島 清隆, 冨田 育義, 原 亨和, 堂免 一成, 林 繁信, 野村 淳子  触媒 = Catalysts & Catalysis  47-  (2)  165  -167  2005/03/01

Books etc

• メタンと二酸化炭素～その触媒的化学変換技術の現状と展望～

  中島清隆 (Contributor固体触媒を利用した高機能性バイオマスポリエステル原料の合成（第3章，第2章）)
  (株)シーエムシー・リサーチ 2023/03 (ISBN: 9784910581361)
• Crystalline Metal Oxide Catalysts

  Daniele Padovan, Kiyotaka Nakajima (ContributorMetal Oxide Catalysts for the Valorization of Biomass-derived Sugars)
  Springer Nature 2022/10 (ISBN: 9789811950124)
• 水中有機合成の開発動向

  中島清隆 (Contributor第15章 4族，5族遷移金属酸化物触媒による水中有機反応)
  株式会社シーエムシー出版 2022/03 (ISBN: 9784781316635) 319 202-212
• 触媒調製ハンドブック

  中島清隆, 原亨和 (炭素固体酸（第７篇，第４章，２節，pp. 634-635）)
  株式会社エヌ・ティー・エス 2011/04
• 触媒調製ハンドブック

  中島清隆 (高級脂肪酸エステル合成（第７篇，第２章，２節，pp. 616-617）)
  株式会社エヌ・ティー・エス 2011/04
• 触媒調製ハンドブック

  中島清隆, 野村淳子 (Contributorスルホン化メソポーラスシリカ（第３篇，第２章，１４節，pp. 288-289）)
  株式会社エヌ・ティー・エス 2011/04
• セラミックス機能化ハンドブック

  中島清隆, 原亨和 (Contributor環境触媒（第６篇，第３章，１節，pp. 464-469）)
  株式会社エヌ・ティー・エス 2011/01
• 多孔体の精密制御と機能・物性評価

  中島清隆, 稲垣伸二 (Contributor2. シリカ系メソ多孔体 (pp. 16-23))
  サイエンス&テクノロジー株式会社 2008/03 (ISBN: 9784903413341)
• 多孔体の精密制御と機能・物性評価

  中島清隆, 稲垣伸二 (Contributor9. シリカ系有機・無機ハイブリッド多孔体 （pp. 93-99）)
  サイエンス&テクノロジー株式会社 2008/03 (ISBN: 9784903413341)

Presentations

• Designing cost-effective supported catalyst for low-temperature oxidation of gaseous plant hormone ethylene  [Not invited]

  Takeshi Mori, Yuta Ogawa, Tatsuhiro Shigyo, Keiichiro Nomura, Yudai Ono, Kiyotaka Nakajima, Atsushi Fukuoka

  The 9th Pacific Basin Conference on Adsorption Science and Technology (PBAST)  2024/09
• 反応場を分離したアセタール保護に基づくグルコースの逆アルドール反応生成物の高収率化  [Invited]

  大須賀遼太, Navya Subray Bha, 石泉, 藪下瑞帆, 菅沼学史, Emiel J.M.Hensen, 中島清隆

  第134回触媒討論会  2024/09
• Phenol production from cashew nutshell-derived cardanol through zeolite-catalyzed dealkylation  [Not invited]

  Jan J. Wiesfeld, Keisuke Iriba, Ryota Osuga, Satoshi Suganuma, Kiyotaka Nakajima

  134th CATSJ meeting  2024/09
• コバルトを添加した担持型酸化マンガンナノクラスター触媒の構造と酸化反応  [Not invited]

  荒木智徳, 原孝佳, 大須賀遼太, 中島清隆, 一國伸之

  第134回触媒討論会  2024/09
• コロイド固定化法により調製した担持Au触媒を用いたバイオマス由来フラン化合物の酸化的エステル化反応  [Not invited]

  新井直, Nirupama Shee, 大須賀遼太, 菅沼学史, 村山徹, 中島清隆

  第134回触媒討論会  2024/09
• カルボニル化合物の還元的アミノ化反応を促進させるリン化鉄触媒

  津田智広, 石川浩也, 盛敏, 菅沼学史, 中島清隆, 山口渉, 満留敬人, 水垣共雄

  第134回触媒討論会  2024/09
• Reductive Amination of Methyl-5-formyl-2-furancarboxylate to Methyl-5-(aminomethyl)-2-furan carboxylate with Co2P nanorod  [Not invited]

  Nirupama Shee, Ryota OSUGA, Satoshi Suganuma, Takato Mitsudome, Kiyotaka Nakajima

  134th CATSJ meeting  2024/09
• Catalytic conversion of D-erythrose to erythroside using zeolites in the presence of alcoholic medium  [Not invited]

  Navya Subray Bha, Ryota Osuga, Satoshi Suganuma, Kiyotaka Nakajima

  134th CATSJ meeting  2024/09
• 青果物の鮮度保持に利用できる低コスト担持金属触媒の開発

  森武士, 小川雄太, 執行達弘, 松嶋景一郎, 野村 隆文, 小野雄大, 中島清隆, 福岡淳

  化学工学会第55回秋季大会  2024/09
• Biomass conversion using heterogeneous catalysts: Oxidative esterification of acetal-protected 5-Hydroxymethylfurfural to Dimethyl Furan 2,5-dicarboxylate  [Invited]

  Kiyotaka Nakajima

  Sydney International Workshop for Sustainable Energy & Chemistry, The University of Sydney  2024/09
• Retro-aldolization of glucose to C4 and C2 carbohydrates and its subsequent acetalization  [Not invited]

  Navya Subray Bha, Shi Quan, Ryota Osuga, Satoshi Suganuma, Kiyotaka Nakajima

  International Symposium on Catalysis 2024  2024/07
• A protection strategy for high-yield synthesis of dimethylfuran-2,5-dicarboxylate from 5-hydroxymethylfurfural using CeO2 supported Au catalyst  [Not invited]

  Nirupama Shee, Ryota Osuga, Nao Arai, Jan J. Wiesfield, Satoshi Suganuma, Atsushi Fukuoka, Emiel J.M. Hensen, Kiyotaka Nakajima

  International Symposium on Catalysis 2024  2024/07
• Biomass conversion using heterogeneous catalysts  [Invited]

  Kiyotaka Nakajima

  6th International Conference on Chemical Science (ICCS)  2024/07
• Reductive amination of acetal-protected 2,5-diformylfuran to 2,5-Bis(aminomethyl)furan using Co2P Nanorods (NRs) catalyst  [Not invited]

  Nirupama Shee, Ryota Osuga, Satoshi Suganuma, Takato Mitsudome, Kiyotaka Nakajima

  The 18th International congress of catalysis (ICC)  2024/07
• Catalytic platinum nanoparticles decorated with molybdenum clusters for selective hydrogenation of amino acid  [Not invited]

  Satoshi Suganuma, Chinami Kaku, Kiyotaka Nakajima, Etsushi Tsuji, Naonobu Katada

  The 18th International congress of catalysis (ICC)  2024/07
• Highly efficient retro-aldolization of glucose to C4 and C2 carbohydrates enabled by in-situ acetalization of their formyl groups  [Not invited]

  Ryota Osuga, Navya Subray Bha, Shi Quan, Mizuho Yabushita, Satoshi Suganuma, Emiel J.M. Hensen, Kiyotaka Nakajima

  The 18th International congress of catalysis (ICC)  2024/07
• Acetal protection strategy in biomass conversion: reductive amination of acetal-protected 2,5-diformyufuran to 2,5-bis(aminomethyl)furan  [Invited]

  Kiyotaka Nakajima

  Taiwan International Conference on Catalysis 2024 (TICC 2024)  2024/06
• 結晶性ニオブ酸化物を用いたキシロース脱水反応  [Not invited]

  Yuan YuTong, 大須賀 遼太, 菅沼 学史, 加藤 英樹, 中島清隆

  石油学会第66回年会  2024/05
• HMFジメチルアセタールの酸化的エステル化によるフランジカルボン酸メチルの合成  [Not invited]

  新井直, Nirupama Shee, 大須賀 遼太, 菅沼 学史, 村山 徹, 中島清隆

  石油学会第66回年会  2024/05
• 固体触媒による次世代型バイオマス変換プロセスの設計  [Invited]

  中島清隆

  第69回野依フォーラム  2024/04  名古屋大学物質科学国際研究センター
• 窒化ニオブを触媒としたキシロースの脱水反応  [Not invited]

  袁 俣曈, 大須賀遼太, 菅沼学史, 加藤英樹, 中島清隆

  化学系学協会北海道支部2024年冬季研究発表会  2024/01  北海道大学  化学系学協会北海道支部
  
• Chemocatalytic valorization of biomass-derived furanics to monomers for biobased polymers  [Invited]

  Kiyotaka Nakajima

  2023 International IRCCS-ILR-IRTG Symposium on “New Horizons of Molecular Functions"  2023/12  Nagoya University  Integrated Research Consortium on Chemical Sciences, Nagoya University
  
• アセタール保護を活用した固体触媒によるバイオマス変換  [Invited]

  中島清隆

  石油学会 令和5年度東北支部講演会  2023/11  秋田大学  石油学会
  
• Nirupama Sheet, Ryota Osuga, Satoshi Suganuma, Atsushi Fukuoka, Takato Mitsudome, Kiyotaka Nakajima  [Not invited]

  Reductive amination of acetal-protected, diformylfuran to synthesize bis(aminomethyl)furan using Co, Nanorods Catalys

  第53回石油・石油化学討論会  2023/10
• Nb2O5担持Au触媒による5-ホルミル-2-フランカルボン酸メチルの酸化的エステル化反応  [Not invited]

  新井 直, Sheet Nirupama, 大須賀 遼太, 菅沼 学史, 村山 徹, 中島 清隆

  第53回石油・石油化学討論会  2023/10
• A protection strategy for the synthesis of biomass-derived and furan-based monomers for the application of biobased polymers  [Invited]

  Kiyotaka Nakajima

  The 4th International Symposium on Catalytic Science and Technology in Sustainable Energy and Environment (EECAT2023)  2023/10
• Acid catalysis of Nb-based mixed oxides for the dehydration of biomass-derived sugars to furanics

  Zijian Wang, Daniele Padovan, Ryota Osuga, Satoshi Suganuma, Atsushi Fukuoka, Hideki Kato, Kiyotaka Nakajima

  第132回触媒討論会  2023/09
• Stepwise oxidative esterification of concentrated acetal-protected 5-HMFsolutions to dimethyl 2,5-furancarboxylate  [Not invited]

  Jan WIesfeld, Ryota Osuga, Satoshi Suganuma, Kiyotaka Nakajima

  第132回触媒討論会  2023/09
• ニオブ系金属酸窒化物によるキシロースからのフルフラール合成  [Not invited]

  袁俣曈, 大須賀遼太, 菅沼学史, 加藤英樹, 中島清隆

  第132回触媒討論会  2023/09
• 担持Au触媒を用いた5-ホルミル-2-フランカルボン酸メチルの酸化的エステル化

  新井直, Nirupama Shee, 大須賀遼太, 菅沼学史, 村山徹, 中島清隆

  第132回触媒討論会  2023/09
• リン酸を固定化し た酸素欠陥型酸化チタン触媒の 固体酸触媒特性  [Not invited]

  今野龍刀, PADOVAN, Daniele, 宮﨑雅義, 大須賀遼太, 細野秀雄, 中島清隆, 北野政明

  第132回触媒討論会  2023/09
• 貴金属系複合触媒 によるピログルタミノールの水素化  [Not invited]

  陳阿古楽, 真鍋智紀, 辻悦司, 中島清隆, 片田直伸, 菅沼学史

  第132回触媒討論会  2023/09
• Stepwise approach for selective FFCA and FDCA production from HMF  [Not invited]

  Jan J. Wiesfeld, Ryota Osuga, Emiel J.M. Hensen, Kiyotaka Nakajima

  15th European Congress on Catalysis  2023/08
• Protection strategy for selective oxidative esterification of HMF-dimethylacetal to dimethylfuran-2,5-dicarboxylate  [Not invited]

  Nirupama Shee, Nao Arai, Jan J. Wiesfeld, Ryota Osuga, Atsushi Fukuoka, Kiyotaka Nakajima

  15th European Congress on Catalysis  2023/08
• 固体触媒によるバイオマス由来糖類からのフラン類合成  [Invited]

  中島清隆

  三井業際研究所「革新的材料・触媒技術調査研究委員会」  2023/08
• Alkaline Earths Titanate Mixed Metal Oxides for Sugar Conversion  [Not invited]

  Daniele Padovan, Ryota Osuga, Kiyotaka Nakajima

  The 19th Korea-Japan Symposium on Catalysis  2023/05
• ニオブ系金属酸窒化物によるキシロースからのフルフラール合成

  袁 俣曈, 中島清隆

  化学系学協会北海道支部2023年冬季研究発表会  2023/01
• 担持Au触媒を用いたバイオマス由来フラン化合物の酸化的エステル化  [Not invited]

  新井 直, Nirupama Shee, 中島清隆

  化学系学協会北海道支部2023年冬季研究発表会  2023/01
• An Acetal Protection Strategy for Chemocatalytic Valorization of Biomass-Derived Furanics to Building Blocks for Functional Polyesters  [Invited]

  Kiyotaka Nakajima

  International Congress on Pure & Applied Chemistry Kota Kinabalu 2022  2022/11
• Oxidative esterification of acetal-protected HMF to dimethyl 2,5-furandicarboxylate using a nitrogen-doped carbon-supported cobalt catalyst  [Not invited]

  Jan J. Wiesfeld, Kiyotaka Nakajima

  第52回石油・石油化学討論会  2022/10
• Alkaline earths titanate mixed metal oxides for sugar conversion  [Not invited]

  Daniele Padovan, Hideki Kato, Kiyotaka Nakajima

  第52回石油・石油化学討論会  2022/10
• Protection strategy for selective oxidative esterification of HMF-dimethylacetal to dimethylfuran-2,5-dicarboxylate with Au/CeO2  [Not invited]

  Nirupama Sheet, Jan J. Wiesfeld, Atsushi Fukuoka, Kiyotaka Nakajima

  第52回石油・石油化学討論会  2022/10
• Protection strategy for selective conversion of biomass-derived furanics to platform molecules  [Invited]

  Kiyotaka Nakajima

  ICAT-IIT Indore Joint Symposium on Catalysis  2022/09
• Oxidative esterification of acetal-protected HMF to dimethyl 2,5-furandicarboxylate using a nitrogen-doped carbon-supported cobalt catalyst  [Not invited]

  Jan J. Wiesfeld, Kiyotaka Nakajima

  第130回触媒討論会  2022/09
• Alkaline earths titanate mixed metal oxides for sugar conversion  [Not invited]

  Daniele Padovan, Hideki Kato, Kiyotaka Nakajima

  第130回触媒討論会  2022/09
• 担持金属触媒による低温エチレン酸化：反応中間体および活性酸素種の定量  [Not invited]

  長内有輝, 中島清隆, 福岡淳

  第130回触媒討論会  2022/09
• Computational study to form humin based on reaction path analysis  [Not invited]

  Keisuke Tashiro, Masato Kobayashi, Kiyotaka Nakajima, Tetsuya Taketsugu

  The 16th Annual Meeting of Japan Society for Molecular Science  2022/09
• 基幹化学品製造を志向したバイオマス変換  [Invited]

  中島清隆

  触媒学会若手会、第42回夏の研修会  2022/08
• Synthesis of 2,5-furandicarboxylic acid from glucose  [Not invited]

  Mitsunori Furuya, Takayuki Aoshima, Kiyotaka Nakajima

  The 9th Tokyo Conference on Advanced Catalytic Science & Technology  2022/07
• Aerobic oxidation of concentrated acetal-protected 5-HMF solutions to FDCA catalyzed by nitrogen-doped carbon-supported cobalt catalyst  [Not invited]

  Jan J. Wiesfeld, Emiel J.M. Hensen, Atsushi Fukuoka, Kiyotaka Nakajima

  The 9th Tokyo Conference on Advanced Catalytic Science & Technology  2022/07
• Reductive amination of 5-formyl-2-furancarboxylic acid to 5-aminomethylfuran-2-carboxylic acid over a cobalt phosphide catalyst  [Not invited]

  Tat Boonyakarn, Jan J. Wiesfeld, Atsushi Fukuoka, Takato Mitsudome, Kiyotaka Nakajima

  The 9th Tokyo Conference on Advanced Catalytic Science & Technology  2022/07
• Sugars dehydration with Nb-based mixed metal oxide catalysts  [Not invited]

  Daniele Padovan, Hideki Kato, Atsushi Fukuoka, Kiyotaka Nakajima

  The 9th Tokyo Conference on Advanced Catalytic Science & Technology  2022/07
• Effective Strategy for High-Yield Furan Dicarboxylate Production for Biobased Polyester Applications  [Invited]

  Kiyotaka Nakajima

  Taipei International Conference on Catalysis 2022  2022/07
• 固体触媒によるバイオマス変換：糖類からのプラスチック原料の合成  [Invited]

  中島清隆

  第439回触媒科学研究所コロキウム  2022/06
• Glucose dehydration to HMF with Nb-based mixed metal oxide materials  [Not invited]

  Daniele Padovan, Hideki Kato, Atsushi Fukuoka, Kiyotaka Nakajima

  石油学会、第70回研究発表会  2022/05
• Reductive amination of 5-formyl-2-furancarboxylic acid and its dimethylacetal form to 5-aminomethylfuran-2-carboxylic acid over a cobalt phosphide nanorod catalyst  [Not invited]

  Tat Boonyakarn, Jan J. Wiesfeld, Atsushi Fukuoka, Takato Mitsudome, Kiyotaka Nakajima

  石油学会、第70回研究発表会  2022/05
• Nitrogen-doped carbon-supported cobalt-catalyzed aerobic oxidation of concentrated acetal-protected 5-HMF solutions to FDCA  [Not invited]

  Jan J. Wiesfeld, Emiel J.M. Hensen, Atsushi Fukuoka, Kiyotaka Nakajima

  石油学会、第70回研究発表会  2022/05
• 結晶性酸化チタンによるキシロースからのフ ルフラール合成

  遠藤幸一郎, 福岡淳, 加藤英樹, 中島清隆

  第51回石油・石油化学討論会（函館大会）  2021/11
• Reductive amination of 5-formyl-2-furancarboxylic acid to 5-(aminomethyl)furan-2-carboxylic acid  [Not invited]

  Tat Boonyakarn, Jan J. Wiesfeld, Atsushi Fukuoka, Takato Mitsudome, Kiyotaka Nakajima

  第51回石油・石油化学討論会（函館大会）  2021/11
• Sugars dehydration with Nb-based mixed metal oxide catalysts  [Not invited]

  Daniele Padovan, Hideki Kato, Atsushi Fukuoka, Kiyotaka Nakajima

  第51回石油・石油化学討論会（函館大会）  2021/11
• Aerobic oxidation of concentrated acetalprotected 5-HMF solutions to FDCA using nitrogen-doped carbon-supported cobalt as a non-noble metal catalyst  [Not invited]

  Jan J. Wiesfeld, Atsushi Fukuoka, Kiyotaka Nakajima

  第51回石油・石油化学討論会（函館大会）  2021/11  函館アリーナ  公益社団法人石油学会
  
• Niobium-based solid catalysts for smart biomass conversion

  Kiyotaka NAKAJIMA

  Niobium Technology for Clean Energy  2021/11
• An acetal protection strategy for chemocatalytic conversion of biomass-derived furanics to building blocks of renewable polymers

  Kiyotaka NAKAJIMA

  2021 Nankai International Symposium on Catalysis  2021/10
• リン酸固定金属酸化物を利用した水溶液内の糖変換反応  [Invited]

  中島清隆

  触媒学会北海道支部 室蘭地区講演会  2021/10
• 担持コバルト触媒を利用したHMFアセタールからのフランジカルボン酸合成

  ウィスフェルド ヤン, 福岡 淳, 中島 清隆

  第128回触媒討論会  2021/09
• 担持ルテニウム触媒を用いた低温における微量エチレン酸化

  長内 有輝, 中島 清隆, 福岡 淳

  第128回触媒討論会  2021/09
• BaNb2O6によるキシロースからのフルフラール合成  [Not invited]

  遠藤 幸一朗, 福岡 淳, 加藤 英樹, 中島 清隆

  第128回触媒討論会  2021/09
• リン化コバルトナノロッド触媒による還元的アミノ化反応：5-ホルミルフラン-2-カルボン酸からの5-アミノメチルフラン-2-カルボン酸の合成  [Not invited]

  タット ブーンヤカーン, 満留 敬人, 福岡 淳, 中島 清隆

  第128回触媒討論会  2021/09
• ルイス酸塩基性質を持つ複合酸化物触媒による糖類の脱水反応  [Not invited]

  ダニエレ パドバン, 加藤 英樹, 福岡 淳, 中島 清隆

  第128回触媒討論会  2021/09
• アセタール保護を基盤としたHMFからのバイオマスプラスチックの原料合成  [Invited]

  中島清隆

  第128回触媒討論会  2021/09
• 担持型BaNb2O6の合成と糖変換への応用  [Not invited]

  遠藤幸一朗, 福岡淳, 加藤英樹, 中島清隆

  日本化学会北海道支部2021年夏季研究発表会  2021/07
• 超秩序構造体を活用した循環型炭素資源の利活用  [Invited]

  中島清隆

  学術変革領域研究（A）「超秩序構造が創造する物性科学」，第1回若手の学校  2021/05
• 担持金属触媒によるエチレンの低温酸化  [Not invited]

  八鍬秀, 中島清隆, 福岡淳

  化学系学協会北海道支部2021年冬季研究発表会  2021/01
• 低温におけるルテニウム担持触媒を用いたエチレン酸化  [Not invited]

  長内有輝, 中島清隆, 福岡淳

  化学系学協会北海道支部2021年冬季研究発表会  2021/01
• Selective oxidation of 5-hydroxymethylfurfural-acetal to 2,5-diformylfuran in concentrated solutions  [Not invited]

  T. Boonyakarn, J. Wiesfeld, K. Nakajima, A. Fukuoka

  第126回触媒討論会  2020/09  静岡大学（オンライン）  触媒学会
  
• Selective Production of Biobased 5-Formylfuran-2-carboxylic Acid in High Concentration  [Not invited]

  J. Wiesfeld, M. Asakawa, A. Fukuoka, E. J. M. Hensen, K. Nakajima

  第126回触媒討論会  2020/09  静岡大学（オンライン）  触媒学会
  
• 担持ルテニウム触媒を利用したバイオマス由来アセタールの水素化反応

  遠藤幸一朗, 中島清隆, 福岡淳

  第126回触媒討論会  2020/09  静岡大学（オンライン）  触媒学会
  
• 担持金ナノ粒子触媒を用いたフルフラール酸化反応における担体が与える影響と金粒子サイズの効果

  望月ちひろ, 林明月, 竹歳絢子, 石田玉青, 宍戸哲也, 中島清隆, 春田正毅, 村山徹

  第125回触媒討論会  2020/03  工学院大学(東京都特別区)  触媒学会
  
• 共存する有機官能基によるシリカ固定化金属錯体触媒の活性向上・反応制御機構  [Not invited]

  前田恭吾, 上村洋平, 田旺帝, 中島清隆, 田中真司, 眞中雄一, 本倉健

  第125回触媒討論会  2020/03  工学院大学(東京都特別区)  触媒学会
  
• 担持金属触媒によるエチレンの低温酸化  [Not invited]

  八鍬秀, 中島清隆, 福岡淳

  化学系協会北海道支部2020年冬季研究発表会  2020/01  北海道大学(札幌市)  日本化学会北海道支部
  
• 担持金属触媒を利用したグリコールアルデヒドジエチルアセタールの水素化反応  [Not invited]

  遠藤幸一郎, 中島清隆, 福岡淳

  化学系協会北海道支部2020年冬季研究発表会  2020/01  北海道大学(札幌市)  日本化学会北海道支部
  
• ヒドロキシアパタイト担持金属触媒を用いた選択的5-ホルミル-2-フランカルボン酸(FFCA)合成  [Not invited]

  淺川みゆき, 中島清隆, 福岡淳

  化学系協会北海道支部2020年冬季研究発表会  2020/01  北海道大学(札幌市)  日本化学会北海道支部
  
• 逐次的な逆アルドール反応・アセタール化によるグルコースからエリスロースとグリコールアルデヒド誘導体の選択合成  [Not invited]

  柴山夏実, 藪下瑞帆, 中島清隆, 福岡淳

  化学系協会北海道支部2020年冬季研究発表会  2020/01  北海道大学(札幌市)  日本化学会北海道支部
  
• A new strategy for Chemocatalytic Production of Biomass-derived Carbohydrates and Diols

  Kiyotaka Nakajima

  108th MSL Lecture (Japan-Taiwan Joint Mini-Workshop on Catalysis)  2019/09  東京工業大学（横浜市）  Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology
  
• Low-temperature oxidation of trace ethylene over a Pt/mesoporous silica catalyst: the role of silica support and mesoporous structure  [Not invited]

  S. S. Satter, J. Hirayama, K. Nakajima, A. Fukuoka

  第124回触媒討論会  2019/09  長崎大学(長崎市)  触媒学会
  
• アセタール化を利用したグルコースの逆アルドール反応によるエリスロース誘導体合成  [Not invited]

  柴山夏実, 藪下瑞帆, 中島清隆, 福岡淳

  第124回触媒討論会  2019/09  長崎大学(長崎市)  触媒学会
  
• ハイドロキシアパタイト担持金属触媒を用いた選択的5-ホルミル-2-フランカルボン酸(FFCA)合成  [Not invited]

  淺川みゆき, M. Kim, 中島清隆, 福岡淳

  第124回触媒討論会  2019/09  長崎大学(長崎市)  触媒学会
  
• 金属酸化物の固体酸塩基触媒作用～バイオマス変換を例にして～  [Invited]

  中島清隆

  第13回触媒道場  2019/08  琵琶湖グランドホテル（大津市）  触媒学会西日本支部
  
• An efficient strategy for practical furan dicarboxylate production for biobased polymer applications  [Not invited]

  M. Kim, Y. Su, T. Aoshima, A. Fukuoka, E.J.M. Hensen, K. Nakajima

  14th EuropaCat - European Congress on Catalysis  2019/08  Aachen
• New Strategy for Selective Production of FDCA from Concentrated HMF-acetal Solutions with CeO2-Supported Au Catalyst

  K. Nakajima, M. Kim, Y. Su, A. Fukuoka, E.J.M. Hensen

  14th EuropaCat - European Congress on Catalysis  2019/08  Aachen  DECHEMA
  
• Direct Conversion of Glucose to Erythrose and Glycol Aldehyde in Ethanol by Selective Retro-aldolization  [Not invited]

  N. Shibayama, M. Yabushita, K. Nakajima, A. Fukuoka

  14th EuropaCat - European Congress on Catalysis  2019/08  Aachen
• Ethylene Oxidation over Supported Pt Catalysts: A Mechanistic and Kinetics Study for Elucidating the Role of SiO2 Support  [Not invited]

  S. Satter, J. Hirayama, K. Nakajima, A. Fukuoka

  14th EuropaCat - European Congress on Catalysis  2019/08  Aachen
• Hydrophobicity of Pt supported over mesoporous silica: An advantage to low temperature ethylene oxidation  [Not invited]

  Shazia S. Sattar, Kiyotaka Nakajima, Atsushi Fukuoka

  The 8th Asia-Pacific Congress on Catalysis  2019/08  Bangkok  Asian-Pacific Association of Catalysis Societies
  
• 担持金属触媒によるエチレン酸化  [Not invited]

  八鍬秀, 平山純, 中島清隆, 福岡淳

  日本化学会北海道支部2019年夏季研究発表会  2019/07  苫小牧工業高等専門学校(苫小牧市)  日本化学会北海道支部
  
• Smart HMF conversion to FDCA and its carboxylates with supported Au catalyst  [Invited]

  Kiyotaka Nakajima

  International Symposium on Heterogeneous Catalysis for Sustainable Energy and Chemical Production  2019/02  北海道大学 (札幌市)  Institute for Catalysis, Hokkaido University
  
• 非可食バイオマスからカルボン酸およびアルコール類の高効率合成  [Invited]

  中島清隆

  nano week 2019 JSTシンポジウム 「バイオマスリファイナリー・バイオマテリアルの革新：低炭素社会の実現に向けて」  2019/02  東京ビッグサイト（東京都特別区）  国立研究開発法人科学技術振興機構
  
• New Strategy for Selective Production of Furan 2,5-dicarboxylic Acid from Concentrated HMF Solutions with CeO2-supported Au Catalyst  [Invited]

  Kiyotaka Nakajima

  ICAT-Cardiff Catalysis Institute Joint International Symposium on Catalysis  2019/01  Cardiff
• A New Route for the Formation of Furan 2,5-Dicarboxylic Acid from a Cyclic HMF-Acetal

  Minjune Kim, Yaqiong Su, Atsushi Fukuoka, Emiel J.M. Hensen, Kiyotaka Nakajima

  International Symposium on Catalysis ad Fine Chemicals 2018  2018/12  Bangkok
• A New Route for the Formation of FDCA from a Cyclic HMF-Acetal with a Supported Au Catalyst  [Not invited]

  Kiyotaka Nakajima, Minjune Kim, Yaqiong Su, Atsushi Fukuoka, Emiel J.M. Hensen

  7th Asia-Oceania Conference on Green and Sustainable Chemistry  2018/11  Singapore
• Isomerization of glucose to fructose by solid base catalysts  [Not invited]

  Natsumi Shibayama, Mizuho Yabushita, Kiyotaka Nakajima, Atsushi Fukuoka

  7th Asia-Oceania Conference on Green and Sustainable Chemistry  2018/11  Singapore
• A new strategy for the production of furan dicarboxylic acid with ceria-supported gold nanoparticles  [Invited]

  Kiyotaka Nakajima

  Department seminar, Department of Chemical and Biomolecular Engineering, Faculty of Engineering, National University of Singapore  2018/11  Singapore
• 固体触媒を利用したバイオポリエステル原料の高効率合成  [Invited]

  中島清隆

  統合物質創製化学研究推進機構，第4回国内シンポジウム  2018/10  九州大学（福岡県春日市）
• ハイドロタルサイトを用いたエタノール中でのグルコース異性化反応  [Not invited]

  柴山夏実, 藪下瑞帆, 中島清隆, 福岡淳

  第122回触媒討論会  2018/09  北海道教育大学函館校(函館市)  触媒学会
  
• Oxaidative esterification with CeO2-supported Au catalyst in methanol  [Not invited]

  Minjune Kim, Su Yaqiong, Hensen Emiel J. M, Atsushi Fukuoka, Kiyotaka Nakajima

  第122回触媒討論会  2018/09  北海道教育大学函館校(函館市)  触媒学会
  
• 担持金属触媒による低温エチレン酸化  [Not invited]

  平山純, Shazia S. Sattar, 石戸信弘, 中島清隆, 福岡淳

  第122回触媒討論会  2018/09  北海道教育大学函館校(函館市)  触媒学会
  
• Mechanistic study of ethylene oxidation over mesoporous silica supported platinum catalyst at low temperature using FTIR  [Not invited]

  Shazia S. Sattar, Takuro Yokoya, Kiyotaka Nakajima, Atsushi Fukuoka

  第122回触媒討論会  2018/09  北海道教育大学函館校(函館市)  触媒学会
  
• New route for the production of furan 2,5-dicarboxylic acid with a CeO2 supported Au catalyst  [Not invited]

  Minjune Kim, Yaqiong Su, Atsushi Fukuoka, Emiel J.M. Hensen, Kiyotaka Nakajima

  Advanced Inorganic Materials: Green and Unconventional Synthesis Approaches and Functional Assessment  2018/09  Padova University, Padova, Italy
• Efficient production of furan 2,5-dicarboxylic acid from an acetal form of 5-hydroxymethylfurfural with a CeO2-supported Au catalyst  [Not invited]

  Minjune Kim, Yaqiong Su, Atsushi Fukuoka, Emiel J.M. Hensen, Kiyotaka Nakajima

  12th International Symposium on Heterogeneous Catalysis  2018/08  Sofia
• Smart Biomass Conversion Using Reusable and Highly Active Metal Oxide Catalysts  [Invited]

  Kiyotaka Nakajima

  9th International Conference on Physics and Its Application  2018/08  Surakarta
• New Strategy for Selective Production of Furan 2,5-dicarboxylic Acid from Concentrated HMF Solutions with CeO2-supported Au Catalyst  [Invited]

  Kiyotaka Nakajima, Minjune Kim, Yaqiong Su, Atsushi Fukuoka, Emiel J. M. Hensen

  The 8th Tokyo Conference on Advanced Catalytic Science and Technology  2018/08  パシフィコ横浜（横浜市）  触媒学会
  
• Acid-basic property of YNbO4 for lactic acid formation from glucose in water  [Not invited]

  Minjune Kim, Hideki Kato, Atsushi Fukuoka, Kiyotaka Nakajima

  The 8th Tokyo Conference on Advanced Catalytic Science and Technology  2018/08  パシフィコ横浜（横浜市）  触媒学会
  
• Aerobic Oxidation of Trace Ethylene at Low Temperature over Platinum Nanoparticle on Hydrophobic Mesoporous Silica Support  [Not invited]

  Shazia S. Sattar, Kiyotaka Nakajima, Atsushi Fukuoka

  The 8th Tokyo Conference on Advanced Catalytic Science and Technology  2018/08  パシフィコ横浜（横浜市）  触媒学会
  
• Low temperature ethylene oxidation over platinum based bimetallic catalyst supported on mesoporous silica  [Not invited]

  Jun Hirayama, Shazia S. Sattar, Kiyotaka Nakajima, Atsushi Fukuoka

  The 8th Tokyo Conference on Advanced Catalytic Science and Technology  2018/08
• Low-temperature oxidation of ethylene by silica-supported platinum catalysts  [Not invited]

  Atsushi Fukuoka, Shazia S. Satter, Jun Hirayama, Kiyotaka Nakajima

  The International Symposium on the relations between Homogeneous and Heterogeneous Catalysis (ISHHC 18)  2018/07  Sydney  The Catalysis Society of Australia, the Royal Australian Chemical Institute
  
• 固体塩基触媒によるグルコースからフルクトースへの異性化反応  [Not invited]

  柴山夏実, 藪下瑞帆, 中島清隆, 福岡淳

  日本化学会北海道支部2018年夏季研究発表会  2018/07  北見工業大学（北見市）  日本化学会北海道支部
  
• 固定化Pd錯体とシラノール基の協奏的触媒作用によるアリルアルコールを用いたアリル化反応の促進  [Not invited]

  池田まりか, 本倉健, 南保雅之, 田旺帝, 中島清隆, 田中真司

  第98回日本化学会春季年会  2018/03  日本大学船橋キャンパス（千葉県船橋市）  日本化学会
  
• Catalytic conversion of biomass-derived hydroxymethylfurfural to dicarboxylic acid (FDCA) as a new building block for biopolyester  [Invited]

  Kiyotaka Nakajima

  CLS, Tokyo Tech. International Forum 2018, “Redox regulation of protein functions, transcription, translation and folding”  2018/03
• 再生可能化学資源の活用：固体触媒によるバイオマスからの必須化学品原料の創生  [Invited]

  中島清隆

  東京工業大学科学生命科学研究所講演会  2018/01
• Lewis acid-base catalysis for sugar conversion  [Invited]

  Kiyotaka Nakajima

  TU/e -ICAT Joint International Symposium on Catalysis for Sustainable Society  2017/11  Eindhoven University of Technology, Eindhoven, the Netherlands
• Selective synthesis of FDCA from HMF by CeO2-supported Au catalyst  [Not invited]

  Minjune Kim, Kiyotaka Nakajima, Atsushi Fukuoka

  第120回触媒討論会  2017/09  愛媛大学（松山市）  触媒学会
  
• 2相系反応を利用した酸化ニオブによるフルフラール合成  [Not invited]

  中島清隆, Navneet Kumar Gupta, 福岡淳

  第120回触媒討論会  2017/09  愛媛大学（松山市）  触媒学会
  
• レブリン酸水素化反応におけるCu-ZrO2触媒へのMn添加効果  [Not invited]

  平山純, IQBAL, Sarwat, 石川智史, 中島清隆, 福岡淳,GRAHAM, Hutchings

  レブリン酸水素化反応におけるCu-ZrO2触媒へのMn添加効果  2017/09
• Pd錯体と第三級アミンのメソポーラスシリカ内部での協奏的触媒作用  [Not invited]

  本倉健, 池田まりか, 南保雅之, 田旺帝, 中島清隆, 田中真司

  第120回触媒討論会  2017/09  愛媛大学（松山市）  触媒学会
  
• メソポーラスシリカ固定化Pd錯体の協奏的触媒作用によるアリルアルコールを用いたアリル化反応  [Not invited]

  本倉健, 池田まりか, 南保雅之, 田旺帝, 中島清隆, 田中真司

  第120回触媒討論会  2017/09  愛媛大学（松山市）  触媒学会
  
• 金ナノ粒子担持触媒を用いたフルフラール酸化  [Not invited]

  村山徹,Navneet, Kumar Gupta, 中島清隆, 福岡淳, 春田正毅

  第120回触媒討論会  2017/09  愛媛大学（松山市）  触媒学会
  
• Selective conversion of xylose into furfural using Nb2O5 as a heterogeneous catalyst with water-tolerant Lewis acid sites  [Not invited]

  Navneet Kumar Gupta, Atsushi Fukuoka, Kiyotaka Nakajima

  13th European Congress on Catalysis  2017/08  Florence
• Acid-basic property of YNbO4 for lactic acid formation from glucose in water  [Not invited]

  Minjune Kim, Hideki Kato, Atsushi Fukuoka, Kiyotaka Nakajima

  13th European Congress on Catalysis  2017/08  Florence
• Low-temperature oxidation of ethylene by silica-supported platinum catalysts  [Not invited]

  Atsushi Fukuoka, Takuro Yokoya, Kiyotaka Nakajima

  13th European Congress on Catalysis  2017/08  Florence
• 触媒が先導する新しいバイオプラスチックの世界  [Invited]

  中島 清隆

  エコマテリアル研究会 講演会（主催：高分子学会）  2017/07
• Selective Furfural formation in Water over Amorphous Nb2O5 with Water-Tolerant Lewis acid sites  [Not invited]

  Kiyotaka Nakajima, Navneet Kumar Gupta, Atsushi Fukuoka

  25th North American Catalysis Society Meeting (NAM25)  2017/06  Denver  North American Catalysis Society
  
• Efficient Xylose Dehydration to Furfural over Lewis Acid Catalysts in Biphasic Water and Toluene  [Not invited]

  Navneet Kumar Gupta, Atsushi Fukuoka, Kiyotaka Nakajima

  16th Korea-Japan Symposium on catalysis & 3rd International Symposium of Institute for Catalysis  2017/05
• Calcination Temperature Effect on Silica Supported Pt Catalyst for Low Temperature Ethylene Oxidation  [Not invited]

  Shazia Sharmin Sattar, Kiyotaka Nakajima, Atsushi Fukuoka

  16th Korea-Japan Symposium on catalysis & 3rd International Symposium of Institute for Catalysis  2017/05
• Acid-Base Catalysis of YNbO4 for Sugar Conversion in Water  [Not invited]

  Minjune Kim, Hideki Kato, Atsushi Fukuoka, Kiyotaka Nakajima

  16th Korea-Japan Symposium on catalysis & 3rd International Symposium of Institute for Catalysis  2017/05
• Lewis Acid Catalysis of Nb2O5 for Selective Furfural Formation from Xylose in Water  [Not invited]

  Kiyotaka Nakajima, Navneet Kumar Gupta, Atsushi Fukuoka

  8th International Symposium on Acid-Base Catalysis  2017/05
• 固体ルイス酸による糖類からの有用フラン類合成  [Invited]

  中島清隆

  先端材料・材料技術部会 高選択性反応分科会 講演会，公益社団法人 新化学技術推進協会  2017/04
• メソポーラスシリカ固定化Pd錯体の協奏的触媒作用による高効率アリル化反応  [Not invited]

  本倉健, 池田まりか, 南保雅之, 田旺帝, 中島清隆

  第97回日本化学会春季年会  2017/03  慶応義塾大学（横浜市）  日本化学会
  
• ニオブ系酸化物による水中糖変換  [Invited]

  中島清隆

  JST戦略的国際共同研究プログラム（SICORP）日-EU共同研究事業，NOVACAMプロジェクト最終公開シンポジウム  2017/03
• ニオブ系酸化物の水中ルイス酸作用と糖変換への応用  [Invited]

  中島清隆

  第10回新機能無機物質探索研究センターシンポジウム (東北大学多元物質科学研究所)  2017/02
• 固体ルイス酸によるバイオマス由来糖類からの有用フラン類・有機酸の合成  [Invited]

  中島清隆

  第41回触媒化学融合研究センター講演会（産業技術総合研究所つくばセンター）  2017/02
• Reaction Mechanism on Glucose to HMF Transformation in Water over Phosphate/TiO2  [Not invited]

  Kiyotaka Nakajima, Atsushi Fukuoka

  7th Asia-Pacific Congress on Catalysis (APCAT-7)  2017/01
• 結晶性ニオブ酸によるトリオース水溶液からの乳酸合成  [Not invited]

  中島清隆, 村山徹, 上田渉

  第46回石油・石油化学討論会  2016/11  京都リサーチパーク（京都市）  石油学会
  
• Basic property of YNbO4 in water  [Not invited]

  Kim Minjune, Keeko Matsumoto, Hideki Kato, Atsushi Fukuoka, Kiyotaka Nakajima

  第46回石油・石油化学討論会  2016/11  京都リサーチパーク（京都市）  石油学会
  
• メソポーラスシリカ白金触媒によるエチレンの酸化メカニズムに関する理論的研究  [Not invited]

  宮崎玲, 中谷直輝, 横谷卓郎, 中島清隆, 福岡淳, 長谷川淳也

  第118回触媒討論会  2016/09  岩手大学（盛岡）  触媒学会
  
• アルミナ担持金触媒上での二酸化炭素から一酸化炭素への還元反応  [Not invited]

  石戸信広, 原賢二, 中島清隆, 福岡淳

  第118回触媒討論会  2016/09  岩手大学（盛岡）  触媒学会
  
• メソポーラスシリカ担持白金触媒による低温エチレン酸化の反応解析  [Not invited]

  横谷卓郎, 中島清隆, 福岡淳

  第118回触媒討論会  2016/09  岩手大学（盛岡）  触媒学会
  
• YNbO4によるグルコースからのHMF合成  [Not invited]

  中島清隆, 松本慶江子, キムミンジュン, 加藤英樹, 福岡淳

  第118回触媒討論会  2016/09  岩手大学（盛岡）  触媒学会
  
• Basic property of YNbO4 in water  [Not invited]

  Kim Minjune, Kiyotaka Nakajima, Hideki Kato, Atsushi Fukuoka

  第118回触媒討論会  2016/09  岩手大学（盛岡）  触媒学会
  
• Efficient Production of Furfural from Xylose in Water over Phosphate/TiO2  [Not invited]

  Kiyotaka Nakajima, Ryohei Noma, Michikazu: Hara

  6th International IUPAC Conference on Green Chemistry ICGC-6  2016/09
• Facile HMF Formation from Glucose in Water over Phosphate/TiO2 with Water-Tolerant Lewis Acid Catalyst  [Not invited]

  Kiyotaka Nakajima, Ryohei Noma, Michikazu Hara

  6th International IUPAC Conference on Green Chemistry (ICGC-6)  2016/09
• Synthesis of Ru-Immobilized Periodic Mesoporous Organosilica and Application for Selective Oxidation of Alkanes  [Not invited]

  Nobuyuki Ishito, Hirokazu Kobayashi, Kiyotaka Nakajima, Yoshifumi Maegawa, Shinji Inagaki, Kenji Hara, Atsushi Fukuoka

  6th International IUPAC Conference on Green Chemistry (ICGC-6)  2016/09
• Ptナノ粒子‐TiO2複合触媒を用いたグリセリンからの乳酸合成  [Not invited]

  駒野谷将, 中島清隆, 北野政明, 鎌田慶吾, 原亨和

  第96回日本化学会春季年会  2016/03
• Immobilization of Ru complexes on bipyridine containing periodic mesoporous organosilica and application for alkane oxidation  [Not invited]

  Nobuyuki Ishito, Hirokazu Kobayashi, Kiyotaka Nakajima, Yoshifumi Maegawa, Shinji Inagaki, Kenji Hara, Atsushi Fukuoka

  The 4th Frontier Chemistry Center International Symposium  2016/02
• 水中機能固体ルイス酸によるバイオマス変換  [Invited]

  中島 清隆

  平成27年度石油学会ジュニアソサイアティ北海道・東北地区講演会（主催：石油学会）  2016/02
• Removal of low concentration of malodorous compounds with silica supported Pt catalysts  [Not invited]

  Maki Nakahara, Kiyotaka Nakajima, Atsushi Fukuoka

  The 5th International Conference on MEXT Project of Integrated Research on Chemical Synthesis  2016/01
• Immobilization of Ru complexes on bipyridine containing periodic mesoporous organosilica and application for alkane oxidation  [Not invited]

  Nobuyuki Ishito, Hirokazu Kobayashi, Kiyotaka Nakajima, Yoshifumi Maegawa, Shinji Inagaki, Kenji Hara, Atsushi Fukuoka

  The 5th International Conference on MEXT Project of Integrated Research on Chemical Synthesis  2016/01
• Lactic acid formation from 1,3-dihydroxyacetone (DHA) over phosphate/TiO2 with water-tolerant Lewis acid sites  [Not invited]

  Kiyotaka Nakajima, Michikazu Hara

  The international chemical congress of Pacific basin societies 2015  2015/12  Waikiki, Hawaii, USA
• 固体酸化物の水中ルイス酸性質を利用した糖変換  [Invited]

  中島 清隆

  平成27年度触媒学会 ・触媒工業協会 交流サロン  2015/12
• 固体ルイス酸による糖変換  [Invited]

  中島清隆

  名古屋大学，IGER & RCMS Seminar  2015/12
• メソポーラスシリカ担持チタン触媒の水中ルイス酸特性  [Not invited]

  中島清隆, 新宅泰, 原亨和

  第31回ゼオライト研究発表会  2015/11
• ビピリジン含有メソポーラス有機シリカ表面上で形成したRu錯体によるアルカン酸化反応  [Not invited]

  石戸信広, 小林広和, 中島清隆, 前川佳史, 稲垣伸二, 原賢二, 福岡淳

  第31回ゼオライト研究発表会  2015/11
• シリカ担持白金触媒による低温エチレン酸化  [Not invited]

  横谷卓郎, 中島清隆, 福岡淳

  第31回ゼオライト研究発表会  2015/11
• Immobilization of Ru complexes on bipyridine containing periodic mesoporous organosilica and application for selective oxidation of alkanes  [Not invited]

  Nobuyuki Ishito, Hirokazu Kobayashi, Kiyotaka Nakajima, Yoshifumi Maegawa, Shinji Inagaki, Kenji Hara, Atsushi Fukuoka

  1st International Symposium of Institute for Catalysis  2015/10
• Lactic Acid Production from a Triose Sugar over Solid Lewis Acid Catalyst in Water  [Not invited]

  Kiyotaka Nakajima, Michikazu Hara

  3nd International Congress on Catalysis for Biorefineries  2015/09  Rio de Janeiro, Brazil
• リン酸処理酸化チタンを用いたグルコース・キシロース水溶液からのフラン類合成  [Not invited]

  野間遼平, 中島清隆, 鎌田慶吾, 北野政明, 林繁信, 原亨和

  第116回触媒討論会  2015/09
• ビピリジン基含有メソポーラス有機シリカ表面上でのルテニウム錯体の形成とアルカン酸化反応への応用  [Not invited]

  石戸信広, 小林広和, 中島清隆, 稲垣伸二, 原賢二, 福岡淳

  第116回触媒討論会  2015/09
• メソポーラスシリカ担持白金ナノ粒子による低温エチレン酸化  [Not invited]

  横谷卓郎, 中島清隆, 福岡淳

  第116回触媒討論会  2015/09
• 水中で機能する固体ルイス酸の開発と糖変換反応への応用  [Invited]

  中島清隆

  第116回触媒討論会  2015/09
• 配位不飽和チタン種の水中ルイス酸性質と糖変換反応への応用  [Invited]

  中島 清隆

  第55回オーロラセミナー  2015/07
• 固体酸化物の水中ルイス酸性質を利用した糖変換反応  [Invited]

  中島 清隆

  北海道大学触媒化学研究センター，第361回コロキウム  2015/04
• 酸化チタンの水中ルイス酸特性とグリセロール水溶液からの乳酸合成への応用  [Invited]

  中島清隆

  日本化学会第95回春季年会，若い世代の特別講演会  2015/03
• 固体ルイス酸による糖類からフラン類・有機酸の環境低負荷合成  [Invited]

  中島清隆

  主催: 触媒学会規則性多孔体研究会，第17回規則性多孔体セミナー  2014/11
• 酸化チタン触媒による水中でのグルコースからのHMF生成メカニズム  [Not invited]

  中島清隆, 野間遼平, 北野政明, 原 亨和

  第44回石油・石油化学討論会  2014/10
• Lactic acid production from a triose sugar over solid Lewis acid catalysts in water  [Not invited]

  Kiyotaka Nakajima

  第44回石油・石油化学討論会  2014/10
• 酸化チタン触媒による水溶液内でのグルコースからのHMF生成メカニズムの解析  [Not invited]

  野間遼平, 中島清隆, 北野政明, 林繁信, 原亨和

  第114回触媒討論会  2014/09
• 金属酸化物触媒を用いたMeerwein-Ponndorf -Verley還元反応機構のDFT計算による解析  [Not invited]

  藤原一彰, 小林久芳, 駒野谷将, 中島清隆, 原亨和

  第114回触媒討論会  2014/09
• 前周期遷移金属酸化物によるMPV還元反応の反応メカニズムの解明  [Not invited]

  駒野谷将, 中島清隆, 北野政明, 小林久芳, 原亨和

  第114回触媒討論会  2014/09
• 酸化コバルトナノクラスター触媒の表面Co種の化学状態と酸化反応活性  [Not invited]

  藤井俊希, 一國伸之, 奥野華子, 井上泰徳, 中島清隆, 原亨和, 原孝佳, 島津省吾

  第114回触媒討論会  2014/09
• チタニア担持金属触媒によるグリセリン水溶液からの乳酸合成  [Not invited]

  鈴木彩花, 駒野谷将, 中島清隆, 北野政明, 原亨和

  第114回触媒討論会  2014/09
• シリカ担持ニオブ触媒の水中ルイス酸特性と糖類変換反応への応用  [Not invited]

  清水信吾, 新宅泰, 中島清隆, 北野政明, 原亨和

  第114回触媒討論会  2014/09
• アルミナの水中ルイス酸特性  [Not invited]

  竹田大樹, 中島清隆, 北野政明, 原亨和

  第114回触媒討論会  2014/09
• 固体ルイス酸による水中でのバイオリファイナリー  [Invited]

  中島 清隆

  5大学附置研究所「ナノマクロ物質・デバイス・システム創製アライアンス」物質・デバイス領域共同研究拠点主催，第７回ワークショップ「固体材料合成および評価技術の新展開」  2014/09
• 5-hydroxymethyl furfural production from glucose aqueous solution over Nb2O5 with water-tolerant Lewis acid site  [Not invited]

  Kiyotaka Nakajima, Masaaki Kitano, Michikazu Hara

  8th International Symposium on Group Five Compounds  2014/06
• チタン含有メソポーラスシリカによる水中での向山アルドール反応  [Not invited]

  中島清隆, 新宅 泰, 北野政明, 原亨和

  石油学会第63回研究発表会  2014/05
• 合成条件の異なるチタン酸ナノチューブの酸触媒特性  [Not invited]

  北野政明, 中島清隆, 小林久芳, 原 亨和

  石油学会第63回研究発表会  2014/05
• 酸化チタンによるグルコースからのHMF合成反応の反応メカニズム  [Not invited]

  野間遼平, 中島清隆, 北野政明, 原亨和

  第94回日本化学会春季年会  2014/03
• 酸化チタン及び酸化ニオブ担持ルテニウム触媒を用いたグリセリンからの乳酸合成  [Not invited]

  鈴木彩花, 駒野谷将, 中島清隆, 北野政明, 原亨和

  第94回日本化学会春季年会  2014/03
• 酸素前処理温度による酸化コバルトナノクラスターのCO酸化反応活性の変化  [Not invited]

  藤井俊希, 一國伸之, 奥野華子, 井上泰徳, 中島清隆, 原亨和, 原孝佳, 島津省吾

  第94回日本化学会春季年会  2014/03
• ジルコニア触媒の酸塩基点を利用したシクロヘキサノンのMPV還元反応  [Not invited]

  駒野谷将, 中島清隆, 北野政明, 原亨和

  第94回日本化学会春季年会  2014/03
• タンタル含有メソポーラスシリカの水中ルイス酸特性  [Not invited]

  清水信吾, 新宅泰, 中島清隆, 北野政明, 原亨和

  第94回日本化学会春季年会  2014/03
• 酸化アルミニウムの水中ルイス酸特性と糖類変換への応用  [Not invited]

  竹田大樹, 中島清隆, 北野政明, 原亨和

  第94回日本化学会春季年会  2014/03
• シリカ上に固定した4配位チタン種のルイス酸触媒特性  [Not invited]

  新宅泰, 中島清隆, 北野政明, 一國伸之, 林繁信, 原亨和

  第94回日本化学会春季年会  2014/03
• 固体ルイス酸をもちいた水中でのバイオマス変換：植物から化学品原料の環境低負荷合成  [Invited]

  中島清隆

  触媒学会規則性多孔体研究会主催，第16回規則性多孔体研究会セミナー  2014/03
• 固体NMRによるカーボン固体強酸の構造解析と機能解明  [Invited]

  中島清隆

  ナノテクノロジープラットホーム技術セミナー「固体NMR」  2013/12
• タングステン担持ジルコニア触媒の水中ルイス酸特性  [Not invited]

  中島清隆, 竹田大樹, 北野政明, 原 亨和

  第43回石油・石油化学討論会  2013/11
• Lewis Acid Property of Metal Trifrates in Water  [Not invited]

  Yusuke Koito, Kiyotaka Nakajima, Masaaki Kitano, Hisayoshi Kobayashi, Ryota Hasegawa, Michikazu Hara

  The Sixth Asia-Pacific Congress on Catalysis (APCAT-6)  2013/10
• シリカ表面に固定した4配位ニオブ種の水中ルイス酸特性  [Not invited]

  清水信吾, 新宅泰, 中島清隆, 北野政明, 原亨和

  第112回触媒討論会  2013/09
• 高機能ルイス酸特性を有する前周期遷移金属酸化物の水中ルイス酸特性  [Not invited]

  小糸祐介, 中島清隆, 北野政明, 原亨和

  第112回触媒討論会  2013/09
• メソポーラスチタノシリケートによる水溶液内での向山アルドール反応  [Not invited]

  新宅泰, 中島清隆, 北野政明, 一國伸之, 林繁信, 原亨和

  第112回触媒討論会  2013/09
• 酸化チタン触媒によるグルコース水溶液からのHMF合成における反応メカニズムの解析  [Not invited]

  野間遼平, 中島清隆, 北野政明, 原亨和

  第112回触媒討論会  2013/09
• WO3/ZrO2の水中機能ルイス酸特性  [Not invited]

  竹田大樹, 中島清隆, 北野政明, 原亨和

  第112回触媒討論会  2013/09
• 固体ルイス酸をもちいた糖水溶液からのフラン類・有機酸合成  [Invited]

  中島清隆

  第112回触媒討論会  2013/09
• Lewis Acid Catalysis of Titanium Tetrehedra on Mesoporous Titanosilicates in Water  [Not invited]

  Hiroshi Shintaku, Kiyotaka Nakajima, Masaaki Kitano, Michikazu Hara

  11th European Congress on Catalysis  2013/09
• Furfural Production from a Xylose Aqueous Solution over Titanium Oxide  [Not invited]

  Ryohei Noma, Kiyotaka Nakajima, Masaaki Kitano, Michikazu Hara

  11th European Congress on Catalysis  2013/09
• Selective Production of Lactic Acid from Triose over Phosphate/TiO2 with Water-Tolerant Lewis Acid sites  [Not invited]

  Kiyotaka Nakajima, Masaaki Kitano, Michikazu Hara

  11th European Congress on Catalysis  2013/09
• Lewis Acid Property and Catalysis of Metal Trifrates in Water  [Not invited]

  Yusuke Koito, Kiyotaka Nakajima, Masaaki Kitano, Hisayoshi Kobayashi, Ryota Hasegawa, Michikazu Hara

  11th European Congress on Catalysis  2013/09
• Selective Production of Lactic Acid from Triose over Phosphate/TiO2 with Water-Tolerant Lewis Acid sites  [Not invited]

  Kiyotaka Nakajima, Masaaki Kitano, Michikazu Hara

  11th European Congress on Catalysis (EuropaCat-XI)  2013/09
• Lewis Acid Catalysis of Titanium Tetrahedra on Mesoporous Silica in Water  [Not invited]

  Hiroshi Shintaku, Kiyotaka Nakajima, Masaaki Kitano, Michikazu Hara

  The Sixteenth International Symposium on Relations between Homogeneous and Heterogeneous Catalysis (ISHHC-16)  2013/08
• Acid Catalysis of Titanium Tetrahedra on Mesoporous Titanosilicate in water  [Not invited]

  Hiroshi Shintaku, Kiyotaka Nakajima, Masaaki Kitano, Michikazu Hara

  The 14th Japan-Korea Symposium on Catalysis  2013/07
• Selective Production of Lactic Acid from Triose over Phosphate/TiO2 with Water-Tolerant Lewis Acid Sites  [Not invited]

  Kiyotaka Nakajima, Masaaki Kitano, Michikazu Hara

  5th Gratama Workshop  2013/05
• Titanium Tetrehedra on Mesoporous Titanosilicates Acting as Lewis Acid sites Workable in Water  [Not invited]

  Hiroshi Shintaku, Kiyotaka Nakajima, Masaaki Kitano, Michikazu Hara

  5th Gratama Workshop  2013/05
• メソポーラスチタノシリケートの水中ルイス酸特性  [Not invited]

  中島清隆, 新宅 泰, 北野政明, 一國伸之, 原 亨和

  石油学会第62回研究発表会  2013/05
• Taを添加したチタン酸ナノチューブの固体酸触媒特性  [Not invited]

  北野政明, 森田一輝, 山本一登, 中島清隆, 原 亨和

  石油学会第62回研究発表会  2013/05
• Synthesis and Acid Catalysis of Zeolite-Templated Microporous Carbon with SO3H Groups  [Not invited]

  Kiyotaka Nakajima, Kiichi Fukuhara, Masaaki Kitano, Shigenobu Hayashi, Michikazu Hara

  International Mesostructured Materials Symposium (IMMS) 2013  2013/05
• Lewis Acid Catalysis of Titanium Tetrahedra on Mesoporous Silica in Water  [Not invited]

  Hiroshi Shintaku, Kiyotaka Nakajima, Masaaki Kitano, Michikazu Hara

  8th International Mesostructured Materials Symposium  2013/05
• Acid Catalysis of TiO4 Tetrahedra on Mesoporous Titanosilicate in water  [Not invited]

  Hiroshi Shintaku, Kiyotaka Nakajima, Masaaki Kitano, Michikazu Hara

  7th International Symposium on Acid-Base Catalysis  2013/05
• Furfural Production from a Xylose Aqueous Solution over Titanium Oxide  [Not invited]

  Ryohei Noma, Kiyotaka Nakajima, Masaaki Kitano, Michkazu Hara

  7th International Symposium on Acid-Base Catalysis  2013/05
• Evaluation of Catalytic Properties of N-doped Titanate Nanotubes  [Not invited]

  Masaaki Kitano, Kazuto Yamamoto, Kiyotaka Nakajima, Shogenobu Hayashi, Michikazu Hara

  7th International Symposium on Acid-Base Catalysis  2013/05
• Lewis Acid Property of Some Metal Triflates in Water: 31P NMR Measurement with Trimethylphosphine Oxide as a Basic Probe Molecule  [Not invited]

  Yusuke Koito, Kiyotaka Nakajima, Hisayoshi Kobayashi, Masaaki Kitano, Michikazu Hara

  7th International Symposium on Acid-Base Catalysis  2013/05
• Selective Production of Lactic Acid from Triose over Phosphate/TiO2 with Water-Tolerant Lewis Acid Sites  [Not invited]

  Kiyotaka Nakajima, Masaaki Kitano, Michikazu Hara

  7th International Symposium on Acid-Base Catalysis  2013/05
• 塩基性プローブを用いた水中機能ルイス酸触媒の酸強度評価と触媒活性の検討  [Not invited]

  小糸祐介, 中島清隆, 小林久芳, 長谷川亮太, 北野政明, 原亨和

  第93回日本化学会春季年会  2013/03
• 前周期遷移金属酸化物を用いたキシロース水溶液からのフルフラール合成  [Not invited]

  野間遼平, 中島清隆, 北野政明, 原亨和

  第93回日本化学会春季年会  2013/03
• メソポーラスチタノシリケートの合成と水中ルイス酸触媒特性  [Not invited]

  新宅泰, 中島清隆, 北野政明, 原亨和

  第93回日本化学会春季年会  2013/03
• WO3担持ZrO2触媒の水中機能ルイス酸特性  [Not invited]

  竹田大樹, 中島清隆, 北野政明, 原亨和

  第93回日本化学会春季年会  2013/03
• Taを添加したチタン酸ナノチューブの固体酸触媒特性  [Not invited]

  森田一輝, 北野政明, 中島清隆, 原亨和

  第93回日本化学会春季年会  2013/03
• 固体ルイス酸による水溶液内での糖類の脱水・異性化反応  [Invited]

  中島清隆

  触媒学会北海道支部主催，札幌講演会  2012/12
• チタン含有メソポーラスシリカの水中ルイス酸触媒特性  [Not invited]

  新宅泰, 中島清隆, 北野政明, 原亨和

  第28回ゼオライト研究発表会  2012/11
• スルホン化したミクロポーラスカーボンの酸触媒特性  [Not invited]

  中島清隆, 福原紀一, 北野政明, 林繁信, 原亨和

  第28回ゼオライト研究発表会  2012/11
• 酸化チタンの水中ルイス酸特性  [Not invited]

  中島清隆, 野間遼平, 北野政明, 原亨和

  第42回石油・石油化学討論会  2012/10
• 固体ルイス酸を用いたトリオース水溶液からの乳酸合成  [Not invited]

  中島清隆, 北野政明, 原亨和

  第110回触媒討論会  2012/09
• TMPOを用いたルイス酸触媒の酸強度評価と触媒活性の検討  [Not invited]

  小糸祐介, 中島清隆, 北野政明, 小林久芳, 原亨和

  第110回触媒討論会  2012/09
• ニトロ基を導入したミクロポーラスカーボン固体酸の酸触媒特性  [Not invited]

  福原紀一, 中島清隆, 北野政明, 林繁信, 原亨和

  第110回触媒討論会  2012/09
• チタノシリケートの水溶液内でのルイス酸特性  [Not invited]

  新宅泰, 中島清隆, 北野政明, 原亨和

  第110回触媒討論会  2012/09
• 酸化チタンを用いたキシロース水溶液からのフルフラール合成  [Not invited]

  野間遼平, 中島清隆, 北野政明, 原亨和

  第110回触媒討論会  2012/09
• 高表面積12CaO·7Al2O3エレクトライドの合成とアンモニア合成反応への応用  [Not invited]

  井上泰徳, 北野政明, Kim Sung-Wng, 山崎遥平, 林文隆, 松石聡, 中島清隆, 原亨和, 細野秀雄

  第110回触媒討論会  2012/09
• Catalytic Production of Lactic Acid from Triose over H3PO4/TiO2 with Water-Tolerant Lewis Acid sites  [Not invited]

  Kiyotaka Nakajima, Masaaki Kitano, Michikazu Hara

  15th International Congress on Catalysis  2012/07
• Titania as an Efficient Water-Tolerant Solid Lewis Acid Catalyst for Allylation of Benzaldehyde with Tetraallyl Tin  [Not invited]

  Ryohei Noma, Kiyotaka Nakajima, Masaaki Kitano, Michikazu Hara

  15th International Congress on Catalysis  2012/07
• Titania as a water-tolerant Lewis acid catalyst for the selective conversion of glucose into 5-hydroxymethylfurfural  [Not invited]

  Michikazu Hara, Kiyotaka Nakajima, Masaaki Kitano

  15th International Congress on Catalysis (ICC)  2012/07
• 固体ルイス酸触媒によるトリオース水溶液からの乳酸合成  [Not invited]

  中島清隆, 北野政明, 原亨和

  石油学会第61回研究発表会  2012/05
• チタン酸ナノチューブの構造制御と酸触媒特性  [Not invited]

  齊藤達也, 北野政明, 中島清隆, 原亨和

  第92回日本化学会春季年会  2012/03
• CVD法を用いた窒素含有アモルファスカーボン薄膜の作製  [Not invited]

  井上泰徳, 森琢磨, 北野政明, 中島清隆, 原亨和

  第92回日本化学会春季年会  2012/03
• ニオブドープチタン酸ナノチューブの固体酸触媒特性  [Not invited]

  北野政明, 中島清隆, 林繁信, 原亨和

  第92回日本化学会春季年会  2012/03
• 前周期遷移金属酸化物の水中機能ルイス酸特性  [Not invited]

  小糸祐介, 中島清隆, 北野政明, 林繁信, 原亨和

  第92回日本化学会春季年会  2012/03
• 酸化チタンによるキシロース水溶液からのフルフラール合成  [Not invited]

  野間遼平, 中島清隆, 北野政明, 林繁信, 原亨和

  第92回日本化学会春季年会  2012/03
• 酸化チタンによるトリオース水溶液からの選択的な乳酸合成  [Not invited]

  中島清隆, 北野政明, 林繁信, 原亨和

  第92回日本化学会春季年会  2012/03
• スルホン化したミクロポーラスカーボンの構造解析と酸触媒特性  [Not invited]

  福原紀一, 北野政明, 中島清隆, 林繁信, 原亨和

  第92回日本化学会春季年会  2012/03
• 固体ルイス酸触媒によるグルコース水溶液からのHMF合成  [Not invited]

  中島清隆, 野間遼平, 北野政明, 林繁信, 原亨和

  第41回石油・石油化学討論会  2011/11
• 塩素含有高分子を原料にしたカーボン固体酸の触媒活性と構造解析  [Not invited]

  菅沼学史, 中島清隆, 北野政明, 林繁信, 原亨和

  第108回触媒討論会  2011/09
• ミクロポーラスカーボンを原料としたカーボン固体酸触媒の合成とその酸触媒特性  [Not invited]

  福原紀一, 北野政明, 中島清隆, 林繁信, 原亨和

  第108回触媒討論会  2011/09
• 水中機能固体ルイス酸による水溶液内での選択的HMF合成  [Not invited]

  中島清隆, 川口貴子, 北野政明, 野村淳子, 林繁信, 原亨和

  第108回触媒討論会  2011/09
• Nb添加チタン酸ナノチューブの固体酸触媒特性  [Not invited]

  北野政明, 中島清隆, 野村淳子, 林繁信, 原亨和

  第108回触媒討論会  2011/09
• 固体ルイス酸による水溶液内でのアリル化反応  [Not invited]

  野間遼平, 菅沼学史, 中島清隆, 北野政明, 野村淳子, 原亨和

  第108回触媒討論会  2011/09
• 有機－無機ハイブリッドメソポーラス固体塩基の調製と応用  [Not invited]

  田中聡, 嶋寿, 横井俊之, 中島清隆, 辰巳敬, 野村淳子

  第108回触媒討論会  2011/09
• HMF Production from Glucose Aqueous Solution over Water-Tolerant Heterogeneous Lewis Acid Catalyst  [Not invited]

  Kiyotaka Nakajima, Yusuke Baba, Ryouhei Noma, Masaaki Kitano, Junko N. Kondo, Shigenobu Hayashi, Michikazu Hara

  EuropaCat X  2011/09
• HMF Production from Glucose Aqueous Solution over Water-Tolerant Heterogeneous Lewis Acid Catalyst  [Not invited]

  Kiyotaka Nakajma, Yusuke Baba, Ryouhei Noma, Masaaki Kitano, Junko N. Kondo, Shigenobu Hayashi, Michikazu Hara

  Joint Conference of The Fifth International Conference on the Science and Technology for Advanced Ceramics (STAC-5) and The 2nd International Conference on Advanced Materials Development and Integration of Novel Structured Metallic and Inorganic Materials  2011/06
• HMF Production from Glucose Aqueous Solution over Water-Tolerant Heterogeneous Lewis Acid Catalyst  [Not invited]

  Kiyotaka Nakajma, Yusuke Baba, Ryouhei Noma, Masaaki Kitano, Junko N. Kondo, Shigenobu Hayashi, Michikazu Hara

  The 13th Korea-Japan Symposium on Catalysis  2011/05
• 固体酸によるバイオマスの化学資源化  [Invited]

  中島清隆

  触媒学会若手会主催，フレッシュマンゼミナール  2011/05
• 多孔質カーボン固体酸の合成と酸触媒特性  [Not invited]

  菅沼学史, 中島清隆, 北野政明, 林繁信, 原亨和

  第91回日本化学会春季年会  2011/03
• スルホン化したメソポーラスカーボンの合成と酸触媒特性  [Not invited]

  菅沼学史, 中島清隆, 北野政明, 林繁信, 原亨和

  第26回ゼオライト研究発表会  2010/12
• SO3H-bearing Mesoporous Carbon with High Selective Catalysis  [Not invited]

  Kiyotaka Nakajima, Satoshi Suganuma, Masaaki Kitano, Shigenobu Hayashi, Michikazu Hara

  CarboCat V  2010/11
• 固体酸～構造，物性，および触媒特性～  [Invited]

  中島清隆

  固体イオニクス学会主催，第６回固体イオニクスセミナー  2010/09
• リン酸処理した含水ニオブ酸の構造解析とグルコースからの HMF合成の触媒活性  [Not invited]

  中島清隆, 馬場悠介, 山下信也, 北野政明, 林繁信, 原亨和

  第106回触媒討論会  2010/09
• チタン酸ナノチューブの固体酸触媒特性  [Not invited]

  北野政明, 和田江美子, 中島清隆, 野村淳子, 林繁信, 原亨和

  第106回触媒討論会  2010/09
• 塩素含有高分子を原料としたカーボン固体酸の合成とその酸触媒性能  [Not invited]

  菅沼学史, 中島清隆, 北野政明, 林繁信, 原亨和

  第106回触媒討論会  2010/09
• PROX反応におけるPt/TiO2触媒への鉄酸化物添加効果  [Not invited]

  庄将志, 北野政明, 中島清隆, 角野健史, 原亨和, 田中虔一

  第106回触媒討論会  2010/09
• ミクロポーラスカーボンを原料としたカーボン固体酸触媒の合成とその酸触媒特性  [Not invited]

  福原紀一, 北野政明, 中島清隆, 林繁信, 原亨和

  第106回触媒討論会  2010/09
• Nbを添加したチタン酸ナノチューブの固体酸触媒特性  [Not invited]

  和田江美子, 北野政明, 中島清隆, 野村淳子, 林繁信, 原亨和

  第106回触媒討論会  2010/09
• Structure and Acid Catalysis of Mesoporous Nb2O5·nH2O  [Not invited]

  Kiyotaka Nakajima, Tsuyoshi Fukui, Masaaki Kitano, Hideki Kato, Junko N. Kondo, Shigenobu Hayashi, Michikazu Hara

  16th International Zeolite Conference joint with the 7th International Mesostructured Materials Symposium (IZC-IMMS 2010)  2010/07
• Selective Production of HMF from D-glucose over Bare and H3PO4-Treated Nb2O5·nH2O as Solid Acid Catalysts  [Not invited]

  Kiyotaka Nakajima, Shinya Yamashita, Masaaki Kitano, Hideki Kato, Michikazu Hara

  The Sixth Tokyo Conference on Advanced Catalytic Science and Technology (TOCAT6) and The Fifth Asia Pacific Congress on Catalysis (APCAT5)  2010/06
• 含水ニオブ酸によるグルコースからのHMF合成  [Not invited]

  中島清隆, 山下信也, 北野政明, 加藤英樹, 野村淳子, 原亨和

  第90回日本化学会春季年会  2010/03
• チタニアナノチューブの合成と固体酸触媒としての応用  [Not invited]

  北野政明, 和田江美子, 中島清隆, 野村淳子, 林繁信, 原亨和

  第90回日本化学会春季年会  2010/03
• チタニアナノチューブの酸触媒特性におよぼす合成条件の影響  [Not invited]

  和田江美子, 北野政明, 中島清隆, 野村淳子, 林繁信, 原亨和

  第90回日本化学会春季年会  2010/03
• 高表面積を有するカーボン固体酸の合成と酸触媒特性  [Not invited]

  菅沼学史, 中島清隆, 北野政明, 田村朝子, 近藤秀怜, 柳川真一朗, 林繁信, 原亨和

  第90回日本化学会春季年会  2010/03
• カーボン系固体酸触媒によるリグノセルロースの糖化  [Not invited]

  山口大造, 北野政明, 菅沼学史, 中島清隆, 原亨和

  第90回日本化学会春季年会  2010/03
• ナフタレンを前駆体としたアモルファスカーボン半導体材料の合成とその電気特性評価  [Not invited]

  菅野真代, 北野政明, 加藤英樹, 中島清隆, 原亨和

  第90回日本化学会春季年会  2010/03
• ホウ素含有有機化合物を前駆体としたn型半導体カーボン材料の合成  [Not invited]

  井上泰徳, 北野政明, 中島清隆, 原亨和

  第90回日本化学会春季年会  2010/03
• 含水ニオブ酸メソ多孔体の合成と酸触媒特性  [Not invited]

  中島清隆, 福井剛史, 北野政明, 加藤英樹, 野村淳子, 原亨和

  第25回ゼオライト研究発表会  2009/11
• ニオブ酸によるD-グルコースからのHMF合成  [Not invited]

  山下信也, 中島清隆, 北野政明, 加藤英樹, 原亨和

  第104回触媒討論会  2009/09
• カーボン系固体酸触媒によるリグノセルロースの糖化  [Not invited]

  山口大造, 北野政明, 中島清隆, 加藤英樹, 原亨和

  第104回触媒討論会  2009/09
• 固体酸触媒としてのチタニアナノチューブ  [Not invited]

  北野政明, 中島清隆, 野村淳子, 林繁信, 原亨和

  第104回触媒討論会  2009/09
• カーボン系固体酸のキャラクタリゼーション  [Not invited]

  福原紀一, 北野政明, 中島清隆, 加藤英樹, 林繁信, 原亨和

  第104回触媒討論会  2009/09
• 官能基修飾したカーボン系固体酸の触媒能  [Not invited]

  角野健史, 山口大造, 北野政明, 中島清隆, 林繁信, 原亨和

  第104回触媒討論会  2009/09
• スルホ化した多孔質カーボン  [Not invited]

  菅沼学史, 中島清隆, 北野政明, 加藤英樹, 田村朝子, 近藤秀怜, 柳川真一朗, 林繁信, 原亨和

  第104回触媒討論会  2009/09
• Brønsted and Lewis Acid Catalysis for Ordered Mesoporous Niobic Acid  [Not invited]

  Kiyotaka Nakajima, Tsuyoshi Fukui, Hideki Kato, Masaaki Kitano, Junko N. Kondo, Michikazu Hara

  International Symposium on Zeolites and Microporous Crystals (ZMPC) 2009  2009/08
• 塩化亜鉛賦活法を用いた高表面積カーボン系固体酸触媒の調製  [Not invited]

  北野政明, 児玉淳史, 高阪務, 中島清隆, 加藤英樹, 林繁信, 原亨和

  第89回日本化学会春季年会  2009/03
• 最適条件におけるカーボン系固体酸触媒によるセルロースの糖化  [Not invited]

  山口大造, 北野政明, 菅沼学史, 中島清隆, 加藤英樹, 原亨和

  第89回日本化学会春季年会  2009/03
• HMF合成における含水ニオブ酸の触媒活性評価  [Not invited]

  山下信也, 中島清隆, 加藤英樹, 原亨和

  第89回日本化学会春季年会  2009/03
• メソポーラス含水ニオブ酸の酸触媒特性  [Not invited]

  中島清隆, 福井剛史, 加藤英樹, 野村淳子, 林繁信, 原亨和

  第89回日本化学会春季年会  2009/03
• カーボン系固体酸の構造解析  [Not invited]

  福原紀一, 中島清隆, 加藤英樹, 林繁信, 原亨和

  第89回日本化学会春季年会  2009/03
• tetr-LaVO4光触媒の高活性化  [Not invited]

  四本賢佑, 加藤英樹, 中島清隆, 工藤昭彦, 原亨和

  第89回日本化学会春季年会  2009/03
• 窒素ドープn型アモルファスカーボン薄膜のバンド構造解析  [Not invited]

  井上泰徳, 加藤英樹, 中島清隆, 原亨和

  第89回日本化学会春季年会  2009/03
• A Periodic Mesoporous Organosilica-Based Donor窶鄭cceptor System for Photocatalytic Hydrogen Evolution  [Not invited]

  Chemistry A Europian Journal  2009
• Preparation and Photocatalysis of Mesoporous Ta3N5  [Not invited]

  Kiyotaka Nakajima, Michiko Ohtani, Daling Lu, Kazunari Domen, Junko N. Kondo

  The IUMRS International Conference in Asia 2008  2008/12
• Preparation and Catalytic Property of Mesoporous Niobic Acid  [Not invited]

  Kiyotaka Nakajima, Tsuyoshi Fukui, Hideki Kato, Junko N. Kondo, Michikazu Hara

  The IUMRS International Conference in Asia 2008  2008/12
• 含水ニオブ酸メソ多孔体の合成と酸触媒特性  [Not invited]

  福井剛史, 中島清隆, 加藤英樹, 野村淳子, 原亨和

  第24回ゼオライト研究発表会  2008/11
• カーボン系固体酸を用いたセロオリゴ糖の加水分解  [Not invited]

  北野政明, 山口大造, 菅沼学史, 中島清隆, 加藤英樹, 林繁信, 原亨和

  第102回触媒討論会  2008/09
• 水存在下でのカーボン系固体酸の構造解析  [Not invited]

  福原紀一, 中島清隆, 加藤英樹, 林繁信, 原亨和

  第102回触媒討論会  2008/09
• カーボン系固体酸触媒によるセルロースの加水分解反応の最適化  [Not invited]

  菅沼学史, 北野政明, 山口大造, 中島清隆, 加藤英樹, 林繁信, 原亨和

  第102回触媒討論会  2008/09
• 含水ニオブ酸を用いたD-グルコース分解反応による5-ヒドロキシメチルフルフラールの合成  [Not invited]

  山下信也, 中島清隆, 加藤英樹, 林繁信, 原亨和

  第102回触媒討論会  2008/09
• メソポーラス酸化物によるトルエンのアルキル化  [Not invited]

  福井剛史, 中島清隆, 加藤英樹, 野村淳子, 原亨和

  第102回触媒討論会  2008/09
• LaVO4の光触媒特性  [Not invited]

  四本賢佑, 加藤英樹, 中島清隆, 工藤昭彦, 原亨和

  第102回触媒討論会  2008/09
• 塩基を付加したカーボン材料の合成  [Not invited]

  矢後寛人, 中島清隆, 加藤英樹, 冨田育義, 林繁信, 原亨和

  第102回触媒討論会  2008/09
• メソポーラス有機シリカ/ビオロゲン/白金光触媒による水素生成反応  [Not invited]

  大橋雅卓, 中島清隆, 山中健一, 青木昌雄, 谷孝夫, 稲垣伸二

  第102回触媒討論会  2008/09
• Acidic Carbon Catalyst Prepared from Lignin  [Not invited]

  Kiyotaka Nakajima, Keiko Ichikawa, Hideki Kato, Shigenobu Hayashi, Michikazu Hara

  E-MES fall meeting 2008  2008/09
• Synthesis and Acid Catalysis of Cellulose-Derived Carbon-Based Solid Acid  [Not invited]

  Satoshi Suganuma, Keiko Ichikawa, Masaaki Kitano, Kiyotaka Nakajima, Hideki Kato, Shigenobu Hayashi, Michikazu Hara

  E-MES fall meeting 2008  2008/09
• Catalytic Production of Benzyltoluene over Mesoporous Niobic acid  [Not invited]

  Tsuyoshi Fukui, Kiyotaka Nakajima, Hideki Kato, Junko N. Kondo, Michikazu Hara

  International Mesostructured Materials Symposium 2008 (IMMS 2008)  2008/09
• Selective Production of HMF from Biomass-Derived Sugar over Solid Acid Catalyst  [Not invited]

  Kiyotaka Nakajima, Shinya Yamashita, Satoshi Suganuma, Hideki Kato, Michikazu Hara

  14th International Congress on Catalysis Pre-symposium  2008/07
• カーボン系固体酸触媒によるセルロース糖化条件の最適化  [Not invited]

  山口大造, 菅沼学史, 中島清隆, 加藤英樹, 北野政明, 林繁信, 原亨和

  第88回日本化学会春季年会  2008/03
• セルロース糖化におけるカーボン系固体酸の反応特性  [Not invited]

  菅沼学史, 山口大造, 北野政明, 中島清隆, 加藤英樹, 林繁信, 原亨和

  第88回日本化学会春季年会  2008/03
• 塩基性官能基を結合したアモルファスカーボン  [Not invited]

  矢後寛人, 中島清隆, 加藤英樹, 林繁信, 原亨和

  第88回日本化学会春季年会  2008/03
• カーボン固体酸触媒を用いたオリゴ糖の加水分解  [Not invited]

  北野政明, 山口大造, 菅沼学史, 市川景子, 中島清隆, 加藤英樹, 林繁信, 原亨和

  第88回日本化学会春季年会  2008/03
• 固体酸触媒によるフルフラール類の合成  [Not invited]

  山下信也, 中島清隆, 加藤英樹, 林繁信, 原亨和

  第88回日本化学会春季年会  2008/03
• シリカ担持型カーボン系固体酸触媒によるエーテル生成  [Not invited]

  福井剛史, 中島清隆, 加藤英樹, 林繁信, 原亨和

  第88回日本化学会春季年会  2008/03
• CN基で修飾したp型アモルファスカーボン薄膜の作成  [Not invited]

  川上俊輔, 中島清隆, 加藤英樹, 原亨和

  第88回日本化学会春季年会  2008/03
• スルホン化したカーボン－シリカ多孔体の調製と酸触媒特性  [Not invited]

  中島清隆, 岡村麻衣, 林繁信, 原亨和

  第23回ゼオライト研究発表会  2007/11
• 天然資源からのフルフラール類、および有機酸の合成  [Not invited]

  山下信也, 中島清隆, 加藤英樹, 林繁信, 原亨和

  第100回触媒討論会  2007/09
• 固体酸を用いたセルロースの糖化  [Not invited]

  菅沼学史, 中島清隆, 加藤英樹, 林繁信, 原亨和

  第100回触媒討論会  2007/09
• カーボン系固体酸触媒の構造解析  [Not invited]

  市川景子, 中島清隆, 加藤英樹, 野村淳子, 林繁信, 原亨和

  第100回触媒討論会  2007/09
• Step-wise Modification of Bifuntionalized Mesoporous Silica Using Grignard Reagents  [Not invited]

  Kiyotaka Nakajima, Kazuyuki Maeda, Takashi Tatsumi, Junko N. Kondo

  15th International Zeolite Conference (15th IZC)  2007/08
• スルホン化したメソポーラス有機シリカの赤外分光法による評価  [Not invited]

  中島清隆, 野村淳子, 堂免一成, 辰巳敬, 稲垣伸二

  第22回ゼオライト研究発表会  2006/12
• Pore Size Control of Hybrid Mesoporous Solid Acid Catalyst  [Not invited]

  Kiyotaka Nakajima, Ikuyoshi Tomita, Kazunari Domen, Shigenobu Hayashi, Takashi Tatsumi, Junko N. Kondo

  5th International Mesostructured Materials Symposium  2006/08
• One-pot synthesis of Crystallized Mesoporous Ta2O5  [Not invited]

  Kiyotaka Nakajima, Daling Lu, Michikazu Hara, Kazunari Domen, Takashi Tatsumi, Junko N. Kondo

  International Conference of Zeolites and Microporous Crystals (ZMPC 2006)  2006/08
• Synthesis of Ordered and Highly Crystallized Mesoporous Ta2O5 by Silica Back-Filling Method  [Not invited]

  Kiyotaka Nakajima, Nao Shirokura, Akira Nakabayashi, Daling Lu, Michikazu Hara, Kazunari Domen, Junko N. Kondo

  5th Tokyo Conference on Advanced Catalytic Science and Technology (TOCAT 5)  2006/07
• ニオブ－タンタル複合酸化物のメソポーラス薄膜の調製と結晶化  [Not invited]

  小澤博紀, 中島清隆, 原亨和, 堂免一成, 辰己 敬, 野村淳子

  第86回日本化学会春季年会  2006/03
• One-pot合成法による結晶性メソポーラス酸化タンタルの合成  [Not invited]

  中島清隆, 原亨和, 堂免一成, 辰巳敬, 野村淳子

  第86回日本化学会春季年会  2006/03
• Synthesis of Hybrid Mesoporous Solid Acid Catalyst  [Not invited]

  Kiyotaka Nakajima, Ikuyoshi Tomita, Michikazu Hara, Shigenobu Hayashi, Kazunari Domen, Junko N. Kondo

  Pasifichem 2005  2005/12
• ハイブリッド型メソポーラス固体酸触媒の構造制御と酸触媒能  [Not invited]

  中島清隆, 冨田育義, 原亨和, 林繁信, 堂免一成, 辰巳敬, 野村淳子

  第21回ゼオライト研究発表会  2005/11
• ハイブリッド型メソポーラス固体酸触媒の細孔径制御と酸特性評価  [Not invited]

  中島清隆, 冨田育義, 原亨和, 林繁信, 堂免一成, 辰巳敬, 野村淳子

  第35回石油・石油化学討論会  2005/10
• カルボン酸基を導入したハイブリッド型メソポーラス材料の調製と高分子合成触媒への応用  [Not invited]

  中島清隆, 冨田育義, 原亨和, 林繁信, 堂免一成, 辰巳敬, 野村淳子

  第96回触媒討論会  2005/09
• メソポーラス酸化チタン複合酸化物の新規調製  [Not invited]

  小澤博紀, 梶田進, 中嶋知之, 中島清隆, 原亨和, 堂免一成, 辰巳敬, 野村淳子

  第96回触媒討論会  2005/09
• Synthesis and Application of Thermally Stable Mesoporous Ta2O5 Photocatalyst for Overall Water Decomposition  [Not invited]

  Kiyotaka Nakajima, Daling Lu, Michikazu Hara, Shigenobu Hayashi, Kazunari Domen, Junko N. Kondo

  3rd Federation of European Zeolite Associations conference  2005/08
• Stable and Highly Active Ph-SO3H Functionalized Hybrid Mesoporous Acid Catalyst  [Not invited]

  Kiyotaka Nakajima, Ikuyoshi Tomita, Michikazu Hara, Shigenobu Hayashi, Kazunari Domen, Junko N. Kondo

  3rd Federation of European Zeolite Associations conference  2005/08
• Development of Highly Active SO3H-modified Hybrid Mesoporous Catalyst  [Not invited]

  Junko N. Knodo, Kiyotaka Nakajima, Ikuyoshi Tomita, Michikazu Hara, Shigenobu Hayashi, Kazunari Domen

  International Symposium on Acid-Base Catalysis V  2005/06
• Stable and Highly Active Hybrid Mesoporous Solid Acid Catalyst  [Not invited]

  Kiyotaka Nakajima, Ikuyoshi Tomita, Michikazu Hara, Shigenobu Hayashi, Kazunari Domen, Junko N. Kondo

  Nanoporous Materials IV  2005/06
• Crystallization of Mesoporous Titanium Mixed Oxides  [Not invited]

  Junko N. Kondo, Nao Shirokura, Kiyotaka Nakajima, Tsuyoshi Kugita, Seitaro Nanba, Kazunari Domen

  Nanoporous Materials IV  2005/06
• Preparation of Crack-Free, Transparent, Mesoporous Niobium Oxide Film with Crystalline Structure by Evaporation-Induced Self-Assembly (EISA) Process  [Not invited]

  Kiyotaka Nakajima, Nao Shirokura, Byongjin Lee, Daling Lu, Junko N. Kondo, Michikazu Hara, Kazunari Domen

  Nanoporous Materials IV  2005/06
• Synthesis of SO3H-functionalized Hybrid Mesoporous Solid Acid Catalyst  [Not invited]

  Kiyotaka Nakajima, Ikuyoshi Tomita, MIchikazu Hara, Shigenobu Hayashi, Kazunari Domen, Junko N. Kondo

  The 10th Japan-Korea Symposium on Catalysis  2005/05
• スルホン酸基を導入した新規ハイブリッド型メソポーラス材料の調製と酸触媒能  [Not invited]

  中島清隆, 冨田育義, 原亨和, 堂免一成, 林繁信, 野村淳子

  第95回触媒討論会  2005/03
• メソポーラス酸化ニオブ薄膜の調製と結晶化  [Not invited]

  中島清隆, 白倉奈央, 原 亨和, 堂免一成, 野村淳子

  第85回日本化学会春季年会  2005/03
• 可視光応答性光触媒を目指したメソポーラス酸化タンタルの結晶化及び窒化  [Not invited]

  大谷美智子, 白倉奈央, 中島清隆, 高田剛, Daling Lu, 野村淳子, 原亨和, 堂免一成

  第85回日本化学会春季年会  2005/03
• Preparation of crack-free, transparent, nanoporous niobium oxide film with crystalline structure by evaporation-induced self-assembly (EISA) process  [Not invited]

  Nanoporous Materials IV  2005
• スルホン酸基を有する新規ハイブリッド型メソポーラス材料の調製と酸触媒能  [Not invited]

  中島清隆, 冨田育義, 原亨和, 堂免一成, 林繁信, 野村淳子

  第20回ゼオライト研究発表会  2004/11
• 化学修飾したハイブリッドメソポーラス材料の固体酸触媒への応用  [Not invited]

  中島清隆, 富田育義, 原亨和, 林繁信, 堂免一成, 野村淳子

  第34回石油・石油化学討論会  2004/11
• メソポーラスシリカの表面修飾による細孔径の調節とその応用  [Not invited]

  石丸竜平, 中島清隆, 原亨和, 堂免一成, 野村淳子

  第94回触媒討論会  2004/09
• メソポーラス酸化タンタルの光触媒活性に関する検討  [Not invited]

  中島清隆, 原亨和, 堂免一成, 野村淳子

  第94回触媒討論会  2004/09
• Preparation of Large-Pore Mesoporous Ethenylene-Silica using Triblock Copolymer surfactant  [Not invited]

  Kiyotaka Nakajima, Ikuyoshi Tomita, Michikazu Hara, Kazunari Domen, Shigenobu Hayashi, Junko N. Kondo

  14th International Zeolite Conference  2004/04
• エチレン基を導入したハイブリットメソポーラス材料の調製と評価  [Not invited]

  中島清隆, 高田剛, 野村淳子, 冨田育義, 原亨和, 林繁信, 堂免一成

  第84回日本化学会春季年会  2004/03
• 中性の構造鋳型剤を用いた高規則性を有する-CH=CH-基導入型ハイブリッドメソポーラスシリカの調製  [Not invited]

  中島清隆, Daling Lu, 野村淳子, 冨田育義, 原亨和, 林繁信, 堂免一成

  第19回ゼオライト研究発表会  2003/11
• Preparation of an ordered mesoporous organosilica hybrid material  [Not invited]

  Junko N. Kondo, Kiyotaka Nakajima, Daling Lu, Ikuyoshi Tomita, Michikazu Hara, Kazunari Domen

  IUMRS-ICAM-2003 Conference  2003/10
• 硫酸処理した炭素/炭化水素-メソポーラスシリカの調製と酸触媒能  [Not invited]

  中島清隆, Darling Lu, 野村淳子, 冨田育義, 原亨和, 堂免一成

  第92回触媒討論会  2003/09
• Synthesis of Highly Ordered Hybrid Mesoporous Material Containing Ethylene Fragment (-CH=CH-) within the Silica Framework  [Not invited]

  Kiyotaka Nakajima, Daling Lu, Junko N. Kondo, Ikuyoshi Tomita, Sinji Inagaki, Michikazu Hara, Kazunari Domen

  9th Korea-Japan Symposium on Catalysis  2003/05
• スルホニル基を導入したメソポーラスベンゼンシリカの酸触媒活性評価  [Not invited]

  白倉奈央, 中島清隆, 野村淳子, 稲垣伸二, 原 亨和, 堂免一成

  第83回日本化学会春季年会  2003/03
• 不飽和炭化水素を架橋したハイブリットメソポーラス材料の調製  [Not invited]

  中島清隆, 野村淳子, 冨田育義, 稲垣伸二, 原亨和, 堂免一成

  第83回日本化学会春季年会  2003/03
• Si-Nbメソポーラス混合酸化物の調製  [Not invited]

  中島清隆, 魯大凌, 原 亨和, 野村淳子, 堂免一成

  第81回日本化学会春季年会  2002/03
• Nb2O5あるいはTa2O5とSiO2が均一混合したメソポーラス複合酸化物の合成  [Not invited]

  中島清隆, 野村淳子, Darling Lu, 原亨和, 堂免一成

  第17回ゼオライト研究発表会  2001/11

Association Memberships

• ゼオライト学会   触媒学会   日本化学会   Japan association of zeolite   Catalysis society of Japan   The Chemical Society of Japan   

Research Projects

• 糖骨格利用型バイオテレフタル酸合成の研究開発

  New energy and industrial technology development organization：NEDO先導研究プログラム

  Date (from‐to) : 2024/05 -2027/03 

  Author : TORAY INDUSTRIES, JGC HOLDINGS
• Advanced Catalytic Technologies for Sustainable Utilization of Oil Palm Empty Fruit Bunch

  Japan Science & Technology Agency：e-ASIA Joint Research Program -Alternative Energy-

  Date (from‐to) : 2023/04 -2026/03 

  Author : Toshiyuki Yokoi, Kiyotaka Nakajima, Ryota Osuga, Chawalit Ngamcharussrivichai, Chawalit Ngamcharussrivichai
• 水中糖変換反応の自在制御を可能とする固体ルイス酸塩基触媒の開発

  Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

  Date (from‐to) : 2022/04 -2026/03 

  Author : 中島 清隆
• 求核剤・求電子剤の自在活性化へ向けた複数金属錯体固定化表面の開発

  Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

  Date (from‐to) : 2022/04 -2025/03 

  Author : 本倉 健(代表者), 中島清隆(分担者), 田旺帝(分担者), 田中真司(分担者)
• エマージェント物性を生みだす超秩序構造の創出

  日本学術振興会：科学研究費助成事業 学術変革領域研究(A)

  Date (from‐to) : 2020/11 -2025/03 

  Author : 谷口 博基, 久保園 芳博, 中島 清隆, 田中 秀明, 武田 博明, 佐藤 友子

   

  本研究課題では、誘電物性、量子物性、電子伝達特性に着目し、高誘電率高信頼性キャパシタや誘電体マルチチューナビリティの創出、未来エネルギー材料の創製、次世代の触媒反応系の構築、そして光合成反応における高効率電子伝達機構の完全理解の実現に向けて、優れた機能性を備えた超秩序構造の探索と設計、そして超秩序構造の機能性－構造相関の究明に取り組んでいる。2021年度は次に示す項目を実施した。①Nb+X (X = Al, Ga, In) 複合置換ルチル型TiO2の単結晶育成・組成分析・誘電特性評価およびNb単置換置換ルチル型TiO2の単結晶育成・誘電特性評価（谷口グループ）、②水溶性乳酸錯体を利用したアモルファス金属錯体法によるα-アルミナ表面での結晶性BaNb2O5微粒子の簡便な合成法の開発およびそれを利用したキシロースからの高選択性フルフラール合成（中島グループ）、③高温用圧電材料(Ca,Sr)2MgSi2O7の高品質結晶化、希土類イオンドープメリライト型結晶のバルク化、Liイオン電池負極材候補材料TiNb2O7のバルク結晶化、光誘電体Zn:BaAl2O4のホスト材料であるBaAl2O4のバルク結晶化（武田グループ）、④トポロジカル絶縁体Sb2Te3-ySeyの圧力下での超伝導相実現と構造転移の解明およびβ-PdBi2の蛍光X線ホログラムから結晶構造の決定（久保園グループ）、⑤フェレドキシン（Fd）が持つ[2Fe-2S]金属クラスターの蛍光X線ホログラフィによる解析およびFdによる電子伝達機構の解明を目指した超高分解能X線構造を用いた理論計算（田中グループ）、⑥高圧下その場蛍光X線ホログラフィ測定用高開口ダイヤモンドアンビル装置の開発・圧力印可によるシリカライトおよびアモルファスアルミナの1mmサイズガラス透明バルク体の合成（佐藤グループ）。
• A cost-effective and highly productive strategy for the production of furan-based monomers for value-added biopolyesters

  Japan Science & Technology Agency：MIRAI

  Date (from‐to) : 2019/11 -2024/03 

  Author : Kiyotaka Nakajima, Takayuki Aoshima

   

  Furan-2,5-dicarboxylic acid (FDCA) has been widely recognized as a suitable replacement for petroleum-derived terephthalic acid for the production of polyester. For example, FDCA or its methyl ester with bio-based ethylene glycol can be polymerized into poly(ethylene 2,5-furandicarboxylate) (PEF) as a furan analog to fossil fuel-derived PET. Owing to the great potential of FDCA, a number of chemocatalytic strategies have already been reported for the conversion of carbohydrates (glucose or fructose) to FDCA via the formation of (5-(hydroxymethyl)furfural (HMF). However, all reactions have so far been exclusively studied in dilute substrate solutions, which significantly hampers practical FDCA production on an industrial scale. This limitation can be attributed to the highly reactive hydroxymethyl (-CH2OH) and formyl (-CHO) groups in the intermediate (HMF), which induces complex side reactions. In this project, we develop a step-wise reaction system for FDCA production that involves the conversion of carbohydrates to a stable HMF-derivative, followed by aerobic oxidation using a highly active supported non-precious metal catalyst. The use of highly sophisticated heterogeneous catalysts in all elementary reactions and reactive separation technology will lead to the development of efficient reaction systems at commercially relevant substrate concentrations. The new processes will enable the cost-effective production of FDCA and its esters on an industrial scale, which contributes to popularization of bio-based polyesters.
• 二酸化炭素を利用したカルボキシル化によるフランジカルボン酸合成

  日本学術振興会：科学研究費助成事業 特別研究員奨励費

  Date (from‐to) : 2021/09 -2023/08 

  Author : 中島 清隆, PADOVAN DANIELE

   

  二酸化炭素を活性化する触媒担体として、ニオブおよびチタンを含有した複合金属酸化物に着目して、その高表面積化および酸塩基触媒性質を精力的に検討した。２つの金属塩を同時に沈殿させて酸化物前駆体を得る共沈法は汎用的かつ単純な手法であるが、対象となる組成に制約を受けることが分かった。一方、錯体重合法やアモルファス金属錯体法ソフト溶液プロセスを駆使すると、①比較的に広範囲で組成の制御が可能であること、②表面積が20-30平米の高表面積化が可能であること、③アモルファス金属錯体法の活用により不活性なアルミナ担体の表面などに複合酸化物微粒子を含浸担持法によって調製できること、を検証した．系統的な構造解析に加え、合成した触媒を簡便的な糖変換反応にて調査した。 アルカリ土類金属を第二成分としたTiおよびニオブ系複合酸化物を系統的に検討し、特にBaやSrを含むニオブ系複合酸化物（BaNb2O6, SrNb2O6など）がキシロースの脱水反応に有効な酸塩基性質を有すること、更に希土類の一つであるイットリウムを第二成分とする複合酸化物（YNbO4）がグルコースの脱水反応に有効であることが分かった。二酸化炭素の昇温脱離分析を実施したところ、二酸化炭素の吸着に有効な塩基サイトまたはルイス酸サイトをもつことが確認されており、対象とするコルベシュミット反応にも適用可能ではないかと想定している． 実際のコルベシュミット反応は高純度の二酸化炭素ガス流通下または加圧下にて実施する。予備検討として市販のスプレー缶を利用した二酸化炭素流通下にて炭酸セシウムとフラン酸による過去の反応をトレースしてみたところ、既報の反応効率を精度よく再現できることを確認した。次年度の初頭に流通反応および加圧反応を定常的に実施する環境整備が完了するため、これまでに調製してきた固体ルイス酸塩基触媒を活用した反応系の構築に取り組む。
• ペアサイト含有ゼオライトの酸・塩基性質および触媒作用の解明

  触媒科学計測共同研究拠点：令和4(2022)年度 触媒科学計測共同研究拠点 共同利用・共同研究

  Date (from‐to) : 2022/12 -2023/01 

  Author : 藪下瑞帆, 中島清隆
• バイオマス変換用担持金属触媒の構造解析

  Joint Usage/Research center：Research Center for Advanced Inorganic Materials

  Date (from‐to) : 2021/04 -2022/03 

  Author : 中島清隆, 鎌田慶吾
• Development of solid acid-base catalysts through amorphous metal complex method

  共同利用・共同研究拠点：物質・デバイス共同研究拠点

  Date (from‐to) : 2021/04 -2022/03 

  Author : 中島清隆, 加藤英樹, 野村淳子
• Research network among materials science and theoretical chemistry for the development of novel heterogeneous catalysts for biomass valorization

  Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))

  Date (from‐to) : 2018/10 -2021/03 

  Author : Nakajima Kiyotaka

   

  We have developed a new reaction system for the production of furan dicarboxylic acid and its alkyl esters from glucose using heterogeneous catalysts. The combination of materials science and catalytic chemistry will enable the design of new catalytic materials and catalytic reactions, while theoretical calculations for clarifying reaction dynamics with catalytic active site and substrate/intermediates will support experimental results to be well-understood at the molecular level. Acetal protection strategy will control side reactions and contribute predominantly to the selective production of target furan compounds in concentrated solutions. The technologies developed in this research can be beneficial for the industrial implementation of the furan compounds in the production of biobased polymers.
• 水溶性ニオブ錯体を利用したバイオマス変換用固体触媒の創生

  Joint Usage / Research Center：Network Joint Research Center for Materials and Devices

  Date (from‐to) : 2020/04 -2021/03 

  Author : Kiyotaka Nakajima, Hideki Kato
• バイオマス変換用担持金属触媒の構造解析

  Joint Usage / Research Center：Research Center for Advanced Inorganic Materials

  Date (from‐to) : 2020/04 -2021/03 

  Author : Kiyotaka Nakajima, Keigo Kamata
• バイオマス変換用担持金属触媒の構造解析

  Joint Usage / Research Center：Research Center for Advanced Inorganic Materials

  Date (from‐to) : 2019/04 -2020/03 

  Author : Kiyotaka Nakajima, Keigo Kamata
• Catalytic production of carboxylic acids and alcohols from biomass-derived carbohydrates

  Japan Science & Technology Agency：Advanced Low Carbon Technology Research and Development Program

  Date (from‐to) : 2015/10 -2020/03 

  Author : Kiyotaka NAKAJIMA, Takayuki Aoshima

   

  目的：非可食バイオマス資源から高機能プラスチックの原料となるジカルボン酸ならびにジオールを合成します。 成果の概要：グルコースからアセタール中間体を経由するフランジカルボン酸の合成ルートならびにカルボン酸から直接アルコールを製造する非貴金属触媒を開発しました。これらの新手法により、バイオマス資源から高生産性ならびに高LCA優位性を達成する製造プロセスの実現が可能となります。 低炭素社会実現へ向けて：ＰＥＴ、ＰＢＴを代表とする汎用ポリエステルの機能性を凌駕するバイオポリエステルのコスト競争力を高めることにより、汎用樹脂の脱化石資源化によるＣＯ２排出量の削減ならびに高機能化による省資源化を達成して、持続可能な循環型低炭素社会の実現に貢献する技術を確立します。
• 酸化物表面の局所構造制御を基盤とした新規な固体ルイス酸触媒の創生

  Joint Usage / Research Center：Network Joint Research Center for Materials and Devices

  Date (from‐to) : 2018/04 -2019/03 

  Author : Kiyotaka Nakajima, Hideki Kato
• One-pot synthesis of lactic acid from biomass-derived carbohydrates over water-tolerant solid catalyst

  Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (A)

  Date (from‐to) : 2015/04 -2018/03 

  Author : Kiyotaka Nakajima

   

  Chemocatalytic conversion of biomass-derived carbohydrates including glycerol and glucose to lactic acid was studied using a stable and highly active solid catalysts. We found that metallic Pt sites and Lewis acid sites on TiO2-supported Pt nanoparticles are active for aerobic oxidation of glycerol to triose sugars and subsequent transformation of these C3 sugars to lactic acid, respectively. A combination Lewis acid and base sites on niobium-containing mixed oxides is effective for step-wise conversion of glucose to lactic acid that contains isomerization (glucose to fructose), retro-aldol condensation (fructose to triose sugars), and dehydration/isomerization (triose sugars to lactic acid) in water.
• 水溶性過酸化物錯体を原料とした新規な複合酸化物触媒の調製とバイオマス変換反応への応用

  Joint Usage / Research Center：Network Joint Research Center for Materials and Devices

  Date (from‐to) : 2017/04 -2018/03 

  Author : Kiyotaka Nakajima, Hideki Kato
• Development on new materials and technology for heat storage

  New Energy and Industrial Technology Development Organization：Thermal Management Materials and Technology Research Association

  Date (from‐to) : 2015/04 -2018/03 

  Author : Kiyotaka NAKAJIMA
• 水溶性過酸化物錯体を基盤とした高機能ルイス酸塩基触媒の合成

  Joint Usage / Research Center：Network Joint Research Center for Materials and Devices

  Date (from‐to) : 2016/04 -2017/03 

  Author : Kiyotaka Nakajima, Junko N. Kondo, Hideki Kato
• NOVACAM

  科学技術振興機構：戦略的国際共同研究プログラム（SICORP），「日本－ＥＵ共同研究」

  Date (from‐to) : 2015/04 -2017/03 

  Author : Wataru Ueda, Michikazu Hara, Satoshi Sato, Kiyotaka Nakajima
• 水溶性錯体を用いたニオブ含有複合酸化物の溶液 合成と糖変換触媒への応用

  Joint Usage / Research Center：Network Joint Research Center for Materials and Devices

  Date (from‐to) : 2015/04 -2016/03 

  Author : Kiyotaka Nakajima, Hideki Kato
• Catalytic conversion of biomass-derived hydrocarbons into industrially important chemicals over solid Lewis acid

  Japan Science & Technology：Precursory Research for Embryonic Science and Technology

  Date (from‐to) : 2012/10 -2016/03 

  Author : Nakajima Kiyotaka

   

  Renewable biomass resources have the potential to serve as a sustainable supply of fuels and chemical intermediates. The purpose of this study is to develop an environmentally benign and energy effective system to convert biomass-derived carbohydrates into value-added chemical resources (furans and organic acid) by using solid catalysts.
• Conversion of sugars into important chemical imtermediates over solid Lewis acid catalysts wokable in water

  Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)

  Date (from‐to) : 2012/04 -2015/03 

  Author : KIYOTAKA Nakajima

   

  Lewis acid sites on early transition metal oxides and their mixed oxides are found to be active in water. They can convert 1,3-dihydroxyacetone, a triose sugar, into lactic acid through stepwise dehydration and hydride transfer reactions. This finding is one important technology for the development of environmentally benign production of important chemicals from renewable plant-derived carhobydrates after diminising fossil fuel resourses.
• Valorization of biomass-derived carbohydrates to essential chemical intermediates by novel heterogeneous catalysts

  東京工業大学：平成26年度東京工業大学挑戦的研究賞

  Date (from‐to) : 2014/04 -2015/03 

  Author : Kiyotaka Nakajima
• Development on new materials and technology for heat storage

  New Energy and Industrial Technology Development Organization：Thermal Management Materials and Technology Research Association

  Date (from‐to) : 2014/04 -2015/03 

  Author : Kiyotaka Nakajima
• ニオブまたはチタン含有複合酸化物の合成と水中ルイス酸特性

  Joint Usage / Research Center：Network Joint Research Center for Materials and Devices

  Date (from‐to) : 2014/04 -2015/03 

  Author : Kiyotaka Nakajima, Hideki Kato
• ヨーロッパ触媒会議での口頭発表

  触媒学会：若手研究者の海外渡航費用助成

  Date (from‐to) : 2013/06 -2014/03
• 水中で機能する固体ルイス酸を用いたバイオマス由来糖類の必須化学資源化

  Joint Usage / Research Center：Joint Usage / Research Center in Catalytic Chemistry

  Date (from‐to) : 2013/04 -2014/03 

  Author : Kiyotaka Nakajima, Wataru Ueda
• 高表面積を有する複合酸化物の溶液合成の確立と酸触媒特性の評価

  Joint Usage / Research Center：Network Joint Research Center for Materials and Devices

  Date (from‐to) : 2013/04 -2014/03 

  Author : Kiyotaka Nakajima, Hideki Kato
• Development of energy storage materials

  パナソニック株式会社：受託研究

  Date (from‐to) : 2010/09 -2013/03 

  Author : Kiyotaka Nakajima, Ken Motokura
• 高密度蓄熱材量に関する研究

  パナソニック株式会社：

  Date (from‐to) : 2010/09 -2013/03
• 含水ニオブ酸による糖類からのフルフラール類の合成

  全国共同利用研究所連携プロジェクト，金属ガラス・無機材料接合技術開発拠点：シーズ探索研究班

  Date (from‐to) : 2009/04 -2010/03 

  Author : 中島 清隆
• 担持型カーボン系固体酸触媒の構造評価と触媒作用の解明

  全国共同利用研究所連携プロジェクト：金属ガラス・無機材料接合技術開発拠点 シーズ探索研究班

  Date (from‐to) : 2008/04 -2009/03 

  Author : 中島 清隆

Industrial Property Rights

• 特許6939141:アルコールの製造方法    2021/09/06

  中島清隆, 福岡淳, キム ミンジュン, 青島敬之, 松尾武士  国立大学法人北海道大学, 三菱ケミカル株式会社
• 特許6900801:カルボン酸エステルまたはカルボン酸の製造方法    2021/06/21

  中島清隆, 福岡淳, キム ミンジュン, 青島敬之  国立大学法人北海道大学, 三菱ケミカル株式会社
• 特開2019-77766:蓄熱方法、蓄熱装置、及び蓄熱材料  2019/05/23

  鈴木基啓, 中島清隆, 本倉健  パナソニック株式会社
• WO2019/027057:酸化分解用触媒及びその利用    2019/02/07

  福岡淳, 中島清隆  国立大学法人北海道大学
• WO2017/010472:臭気低減剤    2017/01/19

  南部宏暢, 笠間勇輝, 藤井亘, 福岡淳, 中島清隆  太陽化学株式会社, 国立大学法人北海道大学
• WO2015/137339:水媒体中ヒドリド異性化反応用固体触媒    2015/09/17

  原亨和, 中島清隆, 竹田大樹  国立研究開発法人科学技術振興機構
• 特開2014-501:カーボン系固体酸触媒の再生方法及び再生装置  2014/01/09

  成相 健太郎, 金子 典充, 佐藤 健治, 北野 誠, 岡 辰哉, 原 亨和, 中島 清隆  株式会社ＩＨＩ, 国立大学法人東京工業大学
• WOWO2012/108472:アモルファス含水金属酸化物およにそれを含む固体ルイス酸触媒    2012/08/06

  中島清隆, 原亨和  公益財団法人神奈川科学技術アカデミー, 国立大学法人東京工業大学
• 特開2010-70419:炭素質材料およびその製造方法、塩基触媒ならびにアニオン交換材料  2010/04/02

  原亨和, 中島清隆, 柳川真一郎, 近藤秀怜  新日本石油株式会社, 国立大学法人東京工業大学
• 特開2010-64941:ヘテロ原子含有有機基を含む炭素質材料およびその製造方法  2010/03/25

  原亨和, 中島清隆, 柳川真一郎, 近藤秀怜  新日本石油株式会社, 国立大学法人東京工業大学
• 特開2009-268960:触媒前駆体，触媒材料および触媒製造方法  2009/11/19

  嵯峨庄太, 下俊久, 村崎孝則, 原亨和, 中島清隆  株式会社豊田自動織機, 国立大学法人東京工業大学
• 特開2009-215172:フルフラール類の生産方法  2009/09/24

  原亨和, 中島清隆, 山下信也  国立大学法人東京工業大学
• 特開2009-67730:無水糖，有機酸，およびフルフラール類の生産方法  2009/04/02

  原亨和, 中島清隆, 山下信也  国立大学法人東京工業大学
• 特開2009-49346:光エネルギー変換材料  2009/03/05

  稲垣伸二, 青木昌雄, 山中健一, 中島清隆, 大橋雅卓  国立大学法人東京工業大学, 株式会社豊田中央研究所
• 特開2008-41266:固体電解質膜  2008/02/21

  野村淳子, 中島清隆, 稲垣伸二, 藤田悟  国立大学法人東京工業大学, 株式会社豊田中央研究所
• 特開2006-152263:有機‐無機ハイブリッド型メソポーラス材料  2006/06/15

  野村淳子, 冨田育義, 中島清隆, 堂免一成  国立大学法人東京工業大学

Media Coverage

• バイオマスの資源化技術、ハイケムと北大が共同研究

  Date : 2024/06/14

  Program, newspaper magazine: 化学工業日報

  https://chemicaldaily.com/archives/478866 Paper
• バイオ素材研究 北大と共同ラボ 化学メーカーが設立

  Date : 2024/06/14

  Program, newspaper magazine: 北海道新聞

  Paper
• 植物由来ペットボトルの研究開始 北海道大、化学メーカーと

  Date : 2024/06/13

  Program, newspaper magazine: 福島民友

  https://www.minyu-net.com/newspack/detail/2024061301001800 Paper
• 植物由来ペットボトルの研究開始 北海道大、化学メーカーと

  Date : 2024/06/13

  Program, newspaper magazine: 京都新聞

  https://www.kyoto-np.co.jp/articles/-/1272044 Paper
• 植物由来ペットボトルの研究開始 北海道大、化学メーカーと

  Date : 2024/06/13

  Program, newspaper magazine: 共同通信（東京新聞、沖縄タイムズ、西日本新聞が引用）

  https://news.yahoo.co.jp/articles/41d29074164fffb4ec0f15de316aee85e1af9b3a Internet
• 北大と化学メーカーが植物由来のペットボトルを共同研究 ３０年までの商品化目指す

  Date : 2024/06/13

  Program, newspaper magazine: 産経新聞

  https://www.sankei.com/article/20240613-F7VE22DEUZIIFAVXUJH6OUGT4M/ Internet
• 北大と化学メーカーが共同研究室 バイオ素材活用で環境負荷軽減

  Date : 2024/06/13

  Program, newspaper magazine: 北海道新聞

  https://www.hokkaido-np.co.jp/article/1024482/ Internet
• 'Green' Building Blocks for Bioplastics

  Date : 2019/05

  Program, newspaper magazine: Design News
• 石油に依存しないペットボトル原料の高効率合成を実現する新触媒技術

  Date : 2019/05

  Writer: Other than myself

  Program, newspaper magazine: マイナビニュース

  Paper
• バイオマスプラ原料、新合成法

  Date : 2019/04/23

  Writer: Other than myself

  Program, newspaper magazine: 日経産業新聞

  7ページ Paper
• Green plastic production made easy

  Date : 2019/04

  Writer: Other than myself

  Program, newspaper magazine: Phys.org

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• Green plastic production made easy

  Date : 2019/04

  Writer: Other than myself

  Program, newspaper magazine: Science Daily

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• Green Plastic Production Made Easy

  Date : 2019/04

  Writer: Other than myself

  Program, newspaper magazine: R&D world

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• Green Plastic Production Made Easy

  Date : 2019/04

  Writer: Other than myself

  Program, newspaper magazine: Lab Manager

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• Materiali ecologici: produrre bioplastica diventa facile

  Date : 2019/04

  Writer: Other than myself

  Program, newspaper magazine: Innovazione

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• Green plastic production made easy

  Date : 2019/04

  Writer: Other than myself

  Program, newspaper magazine: EurekAlert!

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• Green plastic production made easy

  Date : 2019/04

  Program, newspaper magazine: 7th Space Family Portal
• Green Plastic Production Made Easy

  Date : 2019/04

  Writer: Other than myself

  Program, newspaper magazine: Environmental News Network

  Paper
• Goud maakt bioplastic groener

  Date : 2019/04

  Writer: Other than myself

  Program, newspaper magazine: C2W

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• A One-Step Process To Make ‘Green’ Plastics

  Date : 2019/04

  Writer: Other than myself

  Program, newspaper magazine: Asian Scientist

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• Manufacturing of biobased plastics gets easier

  Date : 2019/04

  Writer: Other than myself

  Program, newspaper magazine: Innovation Toronto

  Paper
• バイオプラスチック原料を大量合成する技術を開発――環境調和型触媒反応プロセスによる再生可能資源を活用したバイオ化学品製造技術 北大ら

  Date : 2019/04

  Writer: Other than myself

  Program, newspaper magazine: Fabcross for エンジニア

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• New method enables large-scale production of bio-based plastic bottles

  Date : 2018/11

  Writer: Other than myself

  Program, newspaper magazine: Biobased news

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• Japanese researchers report biobased FDCA breakthrough

  Date : 2018/11

  Writer: Other than myself

  Program, newspaper magazine: NUU Degital voice of the advanced bioeconomy

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• New method enables large-scale production of bio-based plastic bottles

  Date : 2018/11

  Writer: Other than myself

  Program, newspaper magazine: Polyestertime

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• New method enables large-scale production of bio-based plastic bottles

  Date : 2018/11

  Writer: Other than myself

  Program, newspaper magazine: Alpha Galileo

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• Japan-Netherlands researchers discover new method to enable large-scale production of bio-based plastic bottles

  Date : 2018/11

  Writer: Other than myself

  Program, newspaper magazine: Bio market insight

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• New method enables large-scale production of bio-based plastic bottles

  Date : 2018/11

  Writer: Other than myself

  Program, newspaper magazine: Asia research news

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• New method enables large-scale production of bio-based plastic bottles

  Date : 2018/11

  Writer: Other than myself

  Program, newspaper magazine: NANO WERK

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• New method enables large-scale production of bio-based plastic bottles

  Date : 2018/11

  Writer: Other than myself

  Program, newspaper magazine: Phys Org

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• New Method Enables Large-Scale Production of Bio-Based Plastic Bottles

  Date : 2018/11

  Writer: Other than myself

  Program, newspaper magazine: Manufacturing Net

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• New method enables large-scale production of bio-based plastic bottles

  Date : 2018/11

  Writer: Other than myself

  Program, newspaper magazine: Long Room

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• New Technique Enables Mass Production of Bio-Based Plastic Bottles

  Date : 2018/11

  Writer: Other than myself

  Program, newspaper magazine: AZO materials

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• Enabling large-scale production of bio-based plastic bottles

  Writer: Other than myself

  Program, newspaper magazine: New food

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