Researcher basic information

• Ph.D. in Science, Okayama University

• https://researchmap.jp/odaakira?lang=en

• https://jglobal.jst.go.jp/detail?JGLOBAL_ID=202501009018970961

• 80762377

• 202501009018970961

• 触媒
• 吸着
• ゼオライト
• 無機固体表面
• 原子
• 構造・電子状態操作
• 限界突破
• 省エネ・省体積・省貴金属
• 分光学
• 計算科学

• Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering), Catalyst and resource chemical process

• Master's degree program, Graduate School of Chemical Sciences and Engineering
• Doctoral (PhD) degree program, Graduate School of Chemical Sciences and Engineering

Research activity information

• Apr. 2026, 一般社団法人化学情報協会, JAICI賞
• Dec. 2025, 一般社団法人触媒学会, 2025年度触媒学会奨励賞
  メタンおよびエタンの高選択的部分酸化を実現する新規固体触媒の開発
• Feb. 2025, 公益社団法人石油学会, 2024年度石油学会奨励賞「学術部門」
  トルエン－メチルシクロヘキサン系水素キャリア利用における担持白金触媒の省貴金属化および高機能化
• Oct. 2021, 日本化学会 東海支部, 日本化学会東海支部奨励賞
  ゼオライト場を利用した既存元素への新奇物性の付与
• Dec. 2019, 日本ゼオライト学会, 第35回ゼオライト研究発表会若手優秀講演賞
  ゼオライト場を利用した異常原子価の創出ならびにそれらによる安定小分子の活性化
• Nov. 2015, 公益社団法人 日本化学会コロイドおよび界面化学部会, 第66回コロイドおよび界面化学討論会若手口頭講演賞
  MFI中の特異なAl配置によって創り出される交換亜鉛イオンの新奇な電子状態
• Apr. 2014, 公益社団法人日本化学会, 日本化学会第94春季年会学生講演賞
  MFIサブナノ空間を利用した安定な一価亜鉛イオンの創製

• NOx-Propylene Co-adsorption Enables Low-Temperature NOx Desorption via Organic Nitrite/Nitro Species on Pd-Loaded Zeolites
  T. Ohtsu; H. Miyazaki; N. Tsunoji; A. Oda; A. Satsuma
  Environ. Sci. Technol., Jun. 2026, [Peer-reviewed]
  Scientific journal
• Mechanistic Study on NH ₃ -SCR Over Chromium-Exchanged Zeolite Using Modulation-Excitation XAS, Raman Spectroscopy, and DFT Calculations
  Shunsaku Yasumura; Rob Jeremiah G. Nuguid; Filippo Buttignol; Yucheng Qian; Taisetsu Kato; Shinya Mine; Atsushi Satsuma; Akira Oda; Takashi Toyao; Davide Ferri; Ken-ichi Shimizu
  The Journal of Physical Chemistry C, American Chemical Society (ACS), 12 May 2026, [Peer-reviewed]
  Scientific journal
• Encapsulation-driven geometric and electronic tuning of Rh nanoparticles in aluminum-modified zeolite for ambient-pressure methanation
  Wei Shi; Akira Oda; Haruma Kajita; Yuta Yamamoto; Seio Harada; Takeshi Ohtsu; Yuting Fan; Kyoichi Sawabe; Atsushi Satsuma
  Journal of Catalysis, 457, 116789, 116789, Elsevier BV, May 2026, [Peer-reviewed], [Corresponding author]
  English, Scientific journal
• Supported Pt Catalysts for the Toluene–Methylcyclohexane Hydrogen-Carrier System: Toward Ultralow Pt Loadings and High Performance
  Akira Oda
  J. Jpn. Petrol. Inst., 69, 3, 139, 146, May 2026, [Peer-reviewed], [Lead author, Last author, Corresponding author]
  English, Scientific journal
• Durable CO-Assisted Ethane-to-Ethanol Oxidation in Water over Platinum–Titanium Nanoalloys Formed via Strong Metal–Support Interaction
  Akira Oda; Terufusa Inagaki; Koyo Ichino; Yuya Kimura; Yuta Yamamoto; Wei Shi; Toru Murayama; Kyoichi Sawabe; Atsushi Satsuma
  ACS Catalysis, 16, 5, 5150, 5158, American Chemical Society (ACS), 19 Feb. 2026, [Peer-reviewed], [Lead author, Corresponding author]
  English, Scientific journal
• Adaptive Reduction of Multicollinearity for Machine Learning Prediction of CO Adsorption Energies on Single Atoms
  Sawabe, Kyoichi; Tsukiyama, Takumi; Oda, Akira; Satsuma, Atsushi
  Precision Chemistry, Feb. 2026, [Peer-reviewed]
  English, Scientific journal
• Effects of oxygen concentration and PdOx on NOx desorption from Pd-CHA
  Takeshi Ohtsu; Shohei Washiyama; Nao Tsunoji; Akira Oda; Atsushi Satsuma
  Fuel, 404, 136391, 136391, Elsevier BV, Jan. 2026, [Peer-reviewed]
  Scientific journal
• Promoted NOₓ adsorption under wet conditions: Mechanistic insights into Pd redispersion in hydrothermally aged Pd/CHA
  Takeshi Ohtsu; Nao Tsunoji; Akira Oda; Atsushi Satsuma
  Applied Catalysis A: General, 708, 120539, 120539, Elsevier BV, Dec. 2025, [Peer-reviewed]
  Scientific journal
• Hydrophobic, Acid-Free Zeolite-Confined Pt–Cu Nanoalloys Break Activity–Selectivity Limits in Low-Temperature Methane-to-Methanol Oxidation
  Akira Oda; Koyo Ichino; Yuta Yamamoto; Takeshi Ohtsu; Wei Shi; Yoshiharu Sawada; Jun Kumagai; Kyoichi Sawabe; Atsushi Satsuma
  Journal of the American Chemical Society, 147, 33, 30009, 30021, American Chemical Society (ACS), 11 Aug. 2025, [Peer-reviewed], [Lead author, Corresponding author]
  Scientific journal
• CO₂ Capture and Reduction to CO in the Presence of CO over In–Cs/ZrO₂ Dual-Functional Materials
  Yuxuan Xie; Shinta Miyazaki; Lingcong Li; Kai Li; Fei Wang; Akira Oda; Atsushi Satsuma; Abdullah J. Al Abdulghani; Nobutaka Maeda; Akihiko Anzai; Takashi Toyao; Ken-ichi Shimizu
  ACS Catalysis, 15, 14, 12048, 12062, American Chemical Society (ACS), 30 Jun. 2025, [Peer-reviewed]
  Scientific journal
• Design of platinum group metal-free automotive three-way catalyst: MgMn2O4 and CuCo2O4 in tandem layout
  Keisuke Maruichi; Taichi Yamaguchi; Ryosuke Sakai; Kakuya Ueda; Akira Oda; Atsushi Satsuma
  Applied Catalysis A: General, 700, 120305, 120305, Elsevier BV, Jun. 2025
  Scientific journal
• Encapsulated Platinum–Tin Nanoparticles in Silicalite-1 Zeolite for Methylcyclohexane Dehydrogenation
  Wei Shi; Akira Oda; Yuta Yamamoto; Seio Harada; Takeshi Ohtsu; Kyoichi Sawabe; Atsushi Satsuma
  ACS Sustainable Chemistry & Engineering, 13, 9, 3608, 3621, American Chemical Society (ACS), 24 Feb. 2025, [Peer-reviewed], [Corresponding author]
  Scientific journal
• Atom-to-nm Scale Engineering of PtCo Alloy Catalysts over Supported Co Nanoparticles for Advanced Toluene Hydrogenation Efficiency in Hydrogen Storage Applications
  Akira Oda; Nodoka Ogawa; Yuta Yamamoto; Kyoichi Sawabe; Atsushi Satsuma
  ACS Catalysis, 15, 4, 3191, 3202, American Chemical Society (ACS), 07 Feb. 2025, [Peer-reviewed], [Lead author, Corresponding author]
  Scientific journal
• Reversible Multi-Complexation of CO2 to Alkaline Earth Metal Ion-Pair at 400 ppm and 298 K.
  Akira Oda; Kyoichi Sawabe; Atsushi Satsuma
  Angewandte Chemie (International ed. in English), 63, 51, e202411969, 16 Dec. 2024, [Peer-reviewed], [Lead author, Corresponding author], [International Magazine]
  English, Scientific journal, The efficient capture of low-pressure CO2 remains a significant challenge due to the lack of established multi-complexation of CO2 to active sites in microporous materials. In this study, we introduce a novel concept of reversible multi-complexation of CO2 to alkaline earth metal (AEM) ion pairs, utilizing a host site in ferrierite-type zeolite (FER). This unique site constrains two AEM ions in proximity, thereby enhancing and isotopically spreading their electrostatic potentials within the zeolite cavity. This electrostatic potential-engineered micropore can trap up to four CO2 molecules, forming M2+-(CO2)n-M2+ (n=0-4, M=Ca, Sr, Ba) complexes, where each CO2 molecule is stabilized by interactions between terminal oxygen (Ot) in CO2 and the AEM ions. Notably, the Ba2+ pair site exhibits higher thermodynamic stability for multiple adsorptions due to the optimal binding mode of Ba2+-Ot-Ba2+. Through high-accuracy energy calculations, we have established the relationship among structure, CO2 uptake, and operating temperature/pressure, demonstrating that the Ba2+ pair site can capture four CO2 molecules even at concentrations as low as 400 ppm and at 298 K. Three of the four molecules of CO2 trapped were removable at room temperature and under vacuum. The findings in the present study provide a new direction for developing efficient CO2 adsorbents.
• Rutile TiO2-Supported Pt Nanoparticle Catalysts for the Low-Temperature Oxidation of Ethane to Ethanol.
  Akira Oda; Yuya Kimura; Koyo Ichino; Yuta Yamamoto; Jun Kumagai; Gunik Lee; Kyoichi Sawabe; Atsushi Satsuma
  Journal of the American Chemical Society, 146, 29, 20122, 20132, 24 Jul. 2024, [Peer-reviewed], [Lead author, Corresponding author], [International Magazine]
  English, Scientific journal, Structure-function relationships of supported metal nanoparticle catalysts in the CO-assisted oxidation of ethane to ethanol were investigated. A rutile TiO2-supported Pt nanoparticle catalyst exhibited the highest ethanol production rate and selectivity. During the reaction, sequential changes in the geometric/electronic states and the particle size of the Pt nanoparticles were observed. The comparison of the catalytic performances of model catalysts with controlled metal-support interactions revealed that Pt0 nanoparticles of 2-3 nm with a high fraction of the surface Ptδ+ species are highly active for the oxidation of ethane to ethanol. The coadded CO plays a pivotal role not only in tuning the oxidation state of the surface Pt but also in producing H2O2, which is the true oxidant for the reaction. The supported Pt nanoparticle uses in situ-generated H2O2 to activate ethane, where the C2H5OOH intermediate is formed through a nonradical mechanism and subsequently converted to C2H5OH. This reaction occurs even at 50 °C with an apparent activation energy of 32 kJ mol-1. The present study sheds light on the usefulness of surface-engineered Pt nanoparticles for the low-temperature oxidation of ethane to ethanol.
• Excellent capture of N2O functioning at RT and lower pressure by utilizing an NaCaA-85 zeolite.
  Suguru Hiraki; Haruka Baba; Ikuka Kobayashi; Akira Oda; Takahiro Ohkubo; Yuka Ikemoto; Taro Moriwaki; Yasushige Kuroda
  Chemical communications (Cambridge, England), 60, 34, 4597, 4600, 23 Apr. 2024, [International Magazine]
  English, Scientific journal, We have found an efficient adsorption feature provided by an NaCaA-85 zeolite for N2O even at 298 K and at lower pressures: N2O adsorption capacities of 1.33 mmol g-1 and 4.69 mmol g-1 under respective pressures of 0.3 and at 100 Torr, respectively, indicating the best performance among adsorbent materials so far reported. These adsorption peculiarities will pave a new way for developing excellent materials working for adsorption/separation processes of N2O.
• Pt single atom alloyed sub-1 nm thick Fe overlayer on supported Cu nanoparticles for methylcyclohexane dehydrogenation
  Akira Oda; Kosei Ichihashi; Yuta Yamamoto; Takeshi Ohtsu; Wei Shi; Kyoichi Sawabe; Atsushi Satsuma
  Journal of Materials Chemistry A, 12, 34, 22655, 22667, Royal Society of Chemistry (RSC), 2024, [Peer-reviewed], [Lead author, Corresponding author]
  Scientific journal, We successfully developed a Pt single atom alloyed sub-1 nm thick Fe overlayer on Cu nanoparticles capable of catalyzing MCH dehydrogenation with the H₂-evolution rate per Pt mass at least 133 times higher than that of state-of-the-art catalysts.
• Exploring the framework of small pore zeolites for passive NOx adsorption
  Tareq W.M. Amen; Shohei Washiyama; Akira Oda; Takeshi Ohtsu; Atsushi Satsuma; Nao Tsunoji
  Microporous and Mesoporous Materials, 361, 112746, 112746, Elsevier BV, Nov. 2023
  Scientific journal
• Unveiling Static and Dynamic Structures of Pd Clusters Influenced by Al₂O₃ Surfaces: DFT and AIMD Studies
  Kazumasa Murata; Akira Oda; Atsushi Satsuma; Kyoichi Sawabe
  The Journal of Physical Chemistry C, 127, 41, 20267, 20275, American Chemical Society (ACS), 05 Oct. 2023
  Scientific journal
• Ultra-small Mo-Pt subnanoparticles enable CO2 hydrogenation at room temperature and atmospheric pressure.
  Augie Atqa; Masataka Yoshida; Masanori Wakizaka; Wang-Jae Chun; Akira Oda; Takane Imaoka; Kimihisa Yamamoto
  Chemical communications (Cambridge, England), 59, 80, 11947, 11950, 05 Oct. 2023, [International Magazine]
  English, Scientific journal, We present a partially-oxidised bimetallic Mo-Pt subnanoparticle (Mo4Pt8Ox) enabling thermally-driven CO2 hydrogenation to CO at room temperature and atmospheric pressure. A mechanistic study explained the full catalytic cycle of the reaction from CO2 activation to catalyst reactivation. DFT calculations revealed that alloying with Mo lowers the activation barrier by weakening the CO adsorption. This finding could be a first step for low-energy CO2 conversion.
• Breaking the Structure–Activity Relationship in Toluene Hydrogenation Catalysis by Designing Heteroatom Ensembles Based on a Single-Atom Alloying Approach
  Akira Oda; Takahisa Fujita; Yuta Yamamoto; Kyoichi Sawabe; Atsushi Satsuma
  ACS Catalysis, 13, 15, 10026, 10040, American Chemical Society (ACS), 17 Jul. 2023, [Peer-reviewed], [Lead author, Corresponding author]
  Scientific journal
• Self-organized defect-rich RuMO_x epitaxial layers (M = Mn, Fe, Co, Ni, Cu) for catalytic applications
  Akira Oda; Risa Ichihashi; Yuta Yamamoto; Kyoichi Sawabe; Atsushi Satsuma
  Journal of Materials Chemistry A, 11, 44, 23854, 23866, Royal Society of Chemistry (RSC), 2023, [Peer-reviewed], [Lead author, Corresponding author]
  Scientific journal, We have successfully prepared a unique set of RuMO_x epitaxial layers with atomic thickness and abundant defects by a heterometal dopant-assisted epitaxial growth phenomenon and demonstrated their high catalytic applicability.
• Tandem Base-Metal Oxide Catalyst for Automotive Three-way Reaction: MnFe2O4 for Preferential Oxidation of Hydrocarbon
  Keisuke Maruichi; Ryosuke Sakai; Kakuya Ueda; Akira Oda; Atsushi Satsuma
  Catalysis Surveys from Asia, 27, 1, 48, 55, Springer Science and Business Media LLC, 29 Oct. 2022
  Scientific journal
• Orbital Trap of Xenon: Driving Force Distinguishing between Xe and Kr Found at a Single Ag(I) Site in MFI Zeolite at Room Temperature
  Akira Oda; Hiroe Kouzai; Kyoichi Sawabe; Atsushi Satsuma; Takahiro Ohkubo; Kazuma Gotoh; Yasushige Kuroda
  The Journal of Physical Chemistry C, 126, 19, 8312, 8326, American Chemical Society (ACS), 06 May 2022, [Peer-reviewed], [Lead author, Corresponding author]
  Scientific journal
• Preferential oxidation of propene in gasoline exhaust conditions over supported vanadia catalysts
  Ryosuke Sakai; Kakuya Ueda; Junya Ohyama; Akira Oda; Kenzo Deguchi; Shinobu Ohki; Atsushi Satsuma
  Journal of Catalysis, 408, 261, 269, Elsevier BV, Apr. 2022
  Scientific journal
• Identification of a Stable Ozonide Ion Bound to a Single Cadmium Site within the Zeolite Cavity
  Akira Oda; Kyoichi Sawabe; Takahiro Ohkubo; Yasushige Kuroda
  The Journal of Physical Chemistry C, 126, 1, 261, 272, American Chemical Society (ACS), 04 Jan. 2022, [Peer-reviewed], [Lead author, Corresponding author]
  Scientific journal
• Highly efficient CO-assisted conversion of methane to acetic acid over Rh-encapsulated MFI zeolite prepared using RhCl₃ molten salt
  Akira Oda; Mizuki Horie; Naoya Murata; Kyoichi Sawabe; Atsushi Satsuma
  Catalysis Science & Technology, 12, 18, 5488, 5494, Royal Society of Chemistry (RSC), 2022, [Peer-reviewed], [Lead author, Corresponding author]
  Scientific journal, A highly active Rh-MFI zeolite was successfully prepared using RhCl₃ molten salts toward a direct conversion reaction of methane to acetic acid, and the importance of in situ generated Rh^I single-atom sites in the catalysis was clarified.
• Enhancement of toluene hydrogenation activity of supported Pt nanoparticles with increasing the crystallinity of Pt
  Kazumasa Murata; Junya Onoda; Yuta Yamamoto; Akira Oda; Junya Ohyama; Atsushi Satsuma
  Applied Catalysis A: General, 629, 118425, 118425, Elsevier BV, Jan. 2022
  Scientific journal
• High Pt-mass activity of PtIV1/β-MnO₂ surface for low-temperature oxidation of CO under O₂-rich conditions
  Takeshi Nagata; Akira Oda; Yuta Yamamoto; Risa Ichihashi; Kyoichi Sawabe; Atsushi Satsuma
  Catalysis Science & Technology, 12, 9, 2749, 2754, Royal Society of Chemistry (RSC), 2022, [Peer-reviewed], [Corresponding author]
  Scientific journal, We successfully developed a Pt^IV single-atom/β-MnO₂ composite metal-oxide surface capable of catalyzing CO oxidation with the record reaction rates of 0.676 and 0.206 mol_CO h⁻¹ g_Pt⁻¹ at 25 °C and 0 °C, respectively, under the O₂-rich conditions.
• Rational design of ZSM-5 zeolite containing a high concentration of single Fe sites capable of catalyzing the partial oxidation of methane with high turnover frequency
  Akira Oda; Koshiro Aono; Naoya Murata; Kazumasa Murata; Masazumi Yasumoto; Nao Tsunoji; Kyoichi Sawabe; Atsushi Satsuma
  Catalysis Science & Technology, 12, 2, 542, 550, Royal Society of Chemistry (RSC), 2022, [Peer-reviewed], [Lead author, Corresponding author]
  Scientific journal, We successfully synthesized a Fe/ZSM-5 catalyst enabling conversion of methane to C1 oxygenates in record yields, and demonstrated that the fraction of the single Fe cation, as well as the Al distribution, are the powerful activity descriptors.
• Structure–Property Relationships of Pt–Sn Nanoparticles Supported on Al₂O₃ for the Dehydrogenation of Methylcyclohexane
  Kazumasa Murata; Natsuki Kurimoto; Yuta Yamamoto; Akira Oda; Junya Ohyama; Atsushi Satsuma
  ACS Applied Nano Materials, 4, 5, 4532, 4541, American Chemical Society (ACS), 06 May 2021
  Scientific journal
• ¹⁷O-ESR Evidence for Zeolite Matrix Isolation of a Square Planar ZnO₃ Ring Radical with C_2v Symmetry
  Akira Oda; Jun Kumagai; Kyoichi Sawabe; Takahiro Ohkubo; Yasushige Kuroda; Atsushi Satsuma
  The Journal of Physical Chemistry C, 125, 9, 5136, 5145, American Chemical Society (ACS), 25 Feb. 2021, [Peer-reviewed], [Lead author, Corresponding author]
  Scientific journal
• A low-temperature oxyl transfer to carbon monoxide from the Zn^II–oxyl site in a zeolite catalyst
  Akira Oda; Jun Kumagai; Takahiro Ohkubo; Yasushige Kuroda
  Inorganic Chemistry Frontiers, 8, 2, 319, 328, Royal Society of Chemistry (RSC), 2021, [Peer-reviewed], [Lead author, Corresponding author]
  Scientific journal,

  We demonstrated that the Zn^II–oxyl bond specifically formed by the zeolite lattice ligation has the capability of transferring the oxyl to CO even at 150 K with the generation of a single Zn^I˙ species.

• Unprecedented CO₂adsorption behaviour by 5A-type zeolite discovered in lower pressure region and at 300 K
  Akira Oda; Suguru Hiraki; Eiji Harada; Ikuka Kobayashi; Takahiro Ohkubo; Yuka Ikemoto; Taro Moriwaki; Yasushige Kuroda
  Journal of Materials Chemistry A, 9, 12, 7531, 7545, Royal Society of Chemistry (RSC), 2021, [Peer-reviewed], [Lead author]
  Scientific journal,

  The NaCaA-85 zeolite sample which works as an efficient adsorbent for CO₂at RT and in low pressure range was found and its specificity is nicely explained by the model composed of CO₂pinned by two types of Ca²⁺ions through far-IR and DFT studies.

• How to Constrain Metal-Oxyl Bonds on a Solid Surface? Lesson from Isovalent Zn(II)-Oxyl and Ga(III)-Oxyl Bonds Isolated in Zeolite Matrix.
  Akira Oda; Tomoyasu Tanaka; Kyoichi Sawabe; Atsushi Satsuma
  The journal of physical chemistry letters, 11, 21, 9426, 9431, 05 Nov. 2020, [Peer-reviewed], [Lead author, Corresponding author], [International Magazine]
  English, Scientific journal, Isolation of the atomic O radical anion bound to a metal ion (metal-oxyl) on solid surfaces is highly desirable for an understanding of how we should design the surface structure for using oxyl as the reactive site. Owing to the analytical difficulty of oxyl, however, even identification of oxyl remains scarce. Herein, we report isovalent ZnII-oxyl and GaIII-oxyl bonds isolated in the zeolite matrix. Close similarities in reactivity, spectroscopic property, and bonding nature were observed between them, but their site requirements were entirely different; the former is generated at the monovalent ion-exchangeable site, whereas the latter at the divalent ion-exchangeable site. This study strongly suggests that tuning the polarization of the metal-oxygen bond using the charge-controlled lattice oxygens is a useful way to constrain surface metal-oxyl bonds.
• Spectroscopic Evidence of Efficient Generation of Dicopper Intermediate in Selective Catalytic Reduction of NO over Cu-Ion-Exchanged Zeolites
  Akira Oda; Hitomi Shionoya; Yuusuke Hotta; Takahiko Takewaki; Kyoichi Sawabe; Atsushi Satsuma
  ACS Catalysis, 10, 20, 12333, 12339, American Chemical Society (ACS), 08 Oct. 2020, [Peer-reviewed], [Lead author, Corresponding author]
  Scientific journal
• Experimental Description of Biomimetic Ni^II–Superoxo δ-Bond: Franck–Condon Analyses on Its Vibronically-Resolved Spectrum
  Akira Oda; Tsubasa Nanjo; Takahiro Ohkubo; Yasushige Kuroda
  The Journal of Physical Chemistry C, 124, 21, 11544, 11557, American Chemical Society (ACS), 01 May 2020, [Peer-reviewed], [Lead author, Corresponding author]
  Scientific journal
• Spectroscopic Determination of the Site in MFI Zeolite where Cobalt(I) Performs Two-Electron Reduction of O₂ at Room Temperature
  Akira Oda; Yuki Mamenari; Takahiro Ohkubo; Yasushige Kuroda
  The Journal of Physical Chemistry C, 123, 29, 17842, 17854, American Chemical Society (ACS), 27 Jun. 2019, [Peer-reviewed], [Lead author, Corresponding author]
  Scientific journal
• Room temperature O transfer from N2O to CO mediated by the nearest Cd(i) ions in MFI zeolite cavities.
  Akira Oda; Takahiro Ohkubo; Yasushige Kuroda
  Dalton transactions (Cambridge, England : 2003), 48, 7, 2308, 2317, 12 Feb. 2019, [Peer-reviewed], [Lead author, Corresponding author], [International Magazine]
  English, Scientific journal, The dominant oxidation state of cadmium is +ii. Although extensive investigations into the +ii oxidation state have been carried out, the chemistry of CdI is still largely underdeveloped. Here, we report a new functionality of cadmium created by the zeolite lattice: room temperature O transfer from N2O to CO mediated by the nearest monovalent cadmium ions in MFI zeolite. Thermal activation of CdII ion-exchanged MFI zeolite in vacuo affords the diamagnetic [CdI-CdI]2+ species with a short CdI-CdI σ bond (2.67 Å). This species generates two CdI˙ sites under UV irradiation through homolytic cleavage of the CdI-CdI σ bond, and the thus-formed nearest CdI˙ sites abstract an O atom from N2O to generate the [CdII-Ob-CdII]2+ core, where Ob means bridged oxygen. This bridging atomic oxygen species is transferred to CO at room temperature, through which CO oxidation and regeneration of the CdI-CdI σ bond then proceed. This is the first example pertaining to the reversible redox reactivity of the nearest monovalent cadmium ions toward stable small molecules. In situ spectroscopic characterization captured all the intermediates in the reaction processes, and these data allowed us to calibrate the density-functional-theory cluster calculations, by means of which we were able to show that the charge compensation requirement at the nearest two Al sites arrayed circumferentially in the 10-membered ring of MFI zeolite creates such novel functionalities of cadmium. The unprecedented reactivity of CdI and its origin are discussed.
• Room-Temperature Activation of the C-H Bond in Methane over Terminal ZnII-Oxyl Species in an MFI Zeolite: A Combined Spectroscopic and Computational Study of the Reactive Frontier Molecular Orbitals and Their Origins.
  Akira Oda; Takahiro Ohkubo; Takashi Yumura; Hisayoshi Kobayashi; Yasushige Kuroda
  Inorganic chemistry, 58, 1, 327, 338, 07 Jan. 2019, [Peer-reviewed], [Lead author, Corresponding author], [International Magazine]
  English, Scientific journal, Oxygenase reactivity toward selective partial oxidation of CH4 to CH3OH requires an atomic oxygen-radical bound to metal (M-O•: oxyl intermediate) that is capable of abstracting an H atom from the significantly strong C-H bond in CH4. Because such a reaction is frequently observed in metal-doped zeolites, it has been recognized that the zeolite provides an environment that stabilizes the M-O• intermediate. However, no experimental data of M-O• have so far been discovered in the zeolite; thus, little is known about the correlation among the state of M-O•, its reactivity for CH4, and the nature of the zeolite environment. Here, we report a combined spectroscopic and computational study of the room-temperature activation of CH4 over ZnII-O• in the MFI zeolite. One ZnII-O• species does perform H-abstraction from CH4 at room temperature. The resultant CH3• species reacts with the other ZnII-O• site to form the ZnII-OCH3 species. The H2O-assisted extraction of surface methoxide yields 29 μmol g-1 of CH3OH with a 94% selectivity. The quantum mechanics (QM)/molecular mechanics (MM) calculation determined the central step as the oxyl-mediated hydrogen atom transfer which requires an activation energy of only 10 kJ mol-1. On the basis of the findings in gas-phase experiments regarding the CH4 activation by the free [M-O•]+ species, the remarkable H-abstraction reactivity of the ZnII-O• species in zeolites was totally rationalized. Additionally, the experimentally validated QM/MM calculation revealed that the zeolite lattice has potential as the ligand to enhance the polarization of the M-O• bond and thereby enables to create effectively the highly reactive M-O• bond required for low-temperature activation of CH4. The present study proposes that tuning of the polarization effect of the anchoring site over heterogeneous catalysts is the valuable way to create the oxyl-based functionality on the heterogeneous catalyst.
• Why do zeolites induce an unprecedented electronic state on exchanged metal ions?
  Akira Oda; Takahiro Ohkubo; Takashi Yumura; Hisayoshi Kobayashi; Yasushige Kuroda
  Physical chemistry chemical physics : PCCP, 19, 36, 25105, 25114, 20 Sep. 2017, [Peer-reviewed], [Lead author, Corresponding author], [International Magazine]
  English, Scientific journal, Understanding the exact position and the detailed role of the Al array in zeolites is essential for elucidating the origin of unique properties that can be derived from the metal-ion exchanged in zeolite samples and for designing zeolite materials with high efficiency in catalytic and adsorption processes. In this work, we investigate, for the first time, the important role of the Al array in the reactivity observed on the metal-ion exchanged in zeolites on the basis of the calculation method by utilizing the spontaneous heterolytic cleavage of H2 observed experimentally on the Zn2+-ion exchanged in MFI-type zeolites (Zn2+-MFI) as the model reaction. In the case of calculation, two main types of models for considering the Al positions in MFI-type zeolites were adopted: in the first type, the Al atoms with appropriate distances are aligned in the circumferential direction of the straight channel (abbreviated as a circumferentially arrayed Al-Al site); in the second type, the nearest neighbouring Al atoms with appropriate distances are directed toward the straight channel axis (abbreviated as a channel directionally arrayed Al-Al site). Results indicated that the Al-array direction governs the reactivity of Zn2+-MFI. The former type of array well explains the experimental fact that spontaneous and irreversible heterolysis of H2 takes place on Zn2+-MFI, even at room temperature, whereas the latter type of array is less reactive; high activation energy is required for the heterolytic cleavage of H2 (ca. >70 kJ mol-1). A detailed analysis of the geometric and electronic structures of a series of Zn2+-MFI models with various Al-array directions clarified the following facts: the circumferentially arrayed Al-Al site induces an inevitable environment around the Zn2+ site, with the simultaneous existence of both a Lewis acid point (coordinatively unsaturated and distorted Zn2+) and a Lewis base point (the lattice oxygen atom juxtaposed with exchanged Zn2+, which participates in the activation of H2: OjL). It is the circumferentially arrayed Al-Al atoms that confer acidic and basic nature on the metal ion and the lattice oxygen atom (OjL), and ultimately trigger the heterolytic dissociation of H2, even at 300 K.
• Identification of a Stable ZnII -Oxyl Species Produced in an MFI Zeolite and Its Reversible Reactivity with O2 at Room Temperature.
  Akira Oda; Takahiro Ohkubo; Takashi Yumura; Hisayoshi Kobayashi; Yasushige Kuroda
  Angewandte Chemie (International ed. in English), 56, 33, 9715, 9718, 07 Aug. 2017, [Peer-reviewed], [Lead author, Corresponding author], [International Magazine]
  English, Scientific journal, Although a terminal oxyl species bound to certain metal ions is believed to be the intermediate for various oxidation reactions, such as O-O bond generation in photosystem II (PSII), such systems have not been characterized. Herein, we report a stable ZnII -oxyl species induced by an MFI-type zeolite lattice and its reversible reactivity with O2 at room temperature. Its intriguing characteristics were confirmed by in situ spectroscopic studies in combination with quantum-chemical calculations, namely analyses of the vibronic Franck-Condon progressions and the ESR signal features of both ZnII -oxyl and ZnII -ozonide species formed during this reversible process. Molecular orbital analyses revealed that the reversible reaction between a ZnII -oxyl species and an O2 molecule proceeds via a radical O-O coupling-decoupling mechanism; the unpaired electron of the oxyl species plays a pivotal role in the O-O bond generation process.
• Material Exhibiting Efficient CO2 Adsorption at Room Temperature for Concentrations Lower Than 1000 ppm: Elucidation of the State of Barium Ion Exchanged in an MFI-Type Zeolite.
  Atsushi Itadani; Akira Oda; Hiroe Torigoe; Takahiro Ohkubo; Mineo Sato; Hisayoshi Kobayashi; Yasushige Kuroda
  ACS applied materials & interfaces, 8, 13, 8821, 33, 06 Apr. 2016, [International Magazine]
  English, Scientific journal, Carbon dioxide (CO2) gas is well-known as a greenhouse gas that leads to global warming. Many efforts have been made to capture CO2 from coal-fired power plants, as well as to reduce the amounts of excess CO2 in the atmosphere to around 400 ppm. However, this is not a simple task, particularly in the lower pressure region than 1000 ppm. This is because the CO2 molecule is chemically stable and has a relatively low reactivity. In the present study, the CO2 adsorption at room temperature on MFI-type zeolites exchanged with alkaline-earth-metal ions, with focus on CO2 concentrations <1000 ppm, was investigated both experimentally and by calculation. These materials exhibited a particularly efficient adsorption capability for CO2, compared with other presented samples, such as the sodium-form and transition-metal ion-exchanged MFI-type zeolites. Ethyne (C2H2) was used as a probe molecule. Analyses were carried out with IR spectroscopy and X-ray absorption, and provided significant information regarding the presence of the M(2+)-O(2-)-M(2+) (M(2+): alkaline-earth-metal ion) species formed in the samples. It was subsequently determined that this species acts as a highly efficient site for CO2 adsorption at room temperature under very low pressure, compared to a single M(2+) species. A further advantage is that this material can be easily regenerated by a treatment, e.g., through the application of the temperature swing adsorption process, at relatively low temperatures (300-473 K).
• Possibility of Copper-Ion-Exchanged MFI-Type Zeolite as C–H Bond Activation Material for Propane and the Driving Force for Activation
  Atsushi Itadani; Yusuke Sogawa; Akira Oda; Takahiro Ohkubo; Takashi Yumura; Hisayoshi Kobayashi; Mineo Sato; Yasushige Kuroda
  The Journal of Physical Chemistry C, 119, 37, 21483, 21496, American Chemical Society (ACS), 03 Sep. 2015
  Scientific journal
• Synthesis of an unexpected [Zn2](2+) species utilizing an MFI-type zeolite as a nano-reaction pot and its manipulation with light and heat.
  Akira Oda; Takahiro Ohkubo; Takashi Yumura; Hisayoshi Kobayashi; Yasushige Kuroda
  Dalton transactions (Cambridge, England : 2003), 44, 21, 10038, 47, 07 Jun. 2015, [Peer-reviewed], [Lead author], [International Magazine]
  English, Scientific journal, Compared with mercury, the existence of [Zn2](2+) species is rare. We succeeded in preparing a stable [Zn2](2+) species by utilizing an MFI-type zeolite as a nano-reaction pot, which was confirmed using XAFS spectroscopy: the bands at R = 2.35 Å due to the Zn(+)-Zn(+) scattering and at 9660.7 eV due to the 1s-σ* (the anti-bonding orbital comprised of the 4s-4s orbital) transition of the [Zn2](2+) species. This species also gives the characteristic band around 42 000 cm(-1) due to its σ-σ* transition. Furthermore, UV-irradiation corresponding to the σ-σ* transition causes the bond dissociation, forming two unprecedented Zn(+) ions, and detached Zn(+) ions were recombined through heat-treatment at 573 K: [Zn(+)-Zn(+)] ⇄ 2Zn(+). These processes were reproduced by applying the DFT calculation method to the assumed triplet, σ(α)-σ*(α), structure formed on the M7-S2 site with the specific Al array in the MFI-type zeolite. Research into the specific field using zeolites to synthesize "ultra-state ions" is very promising.
• Combined Experimental and Computational Approaches To Elucidate the Structures of Silver Clusters inside the ZSM-5 Cavity
  Takashi Yumura; Akira Oda; Hiroe Torigoe; Atsushi Itadani; Yasushige Kuroda; Takashi Wakasugi; Hisayoshi Kobayashi
  The Journal of Physical Chemistry C, 118, 41, 23874, 23887, American Chemical Society (ACS), 07 Oct. 2014
  Scientific journal
• An Important Factor in CH₄ Activation by Zn Ion in Comparison with Mg Ion in MFI: The Superior Electron-Accepting Nature of Zn²⁺
  Akira Oda; Hiroe Torigoe; Atsushi Itadani; Takahiro Ohkubo; Takashi Yumura; Hisayoshi Kobayashi; Yasushige Kuroda
  The Journal of Physical Chemistry C, 118, 28, 15234, 15241, American Chemical Society (ACS), 09 Jul. 2014, [Peer-reviewed], [Lead author]
  Scientific journal
• Success in making Zn+ from atomic Zn(0) encapsulated in an MFI-type zeolite with UV light irradiation.
  Akira Oda; Hiroe Torigoe; Atsushi Itadani; Takahiro Ohkubo; Takashi Yumura; Hisayoshi Kobayashi; Yasushige Kuroda
  Journal of the American Chemical Society, 135, 49, 18481, 9, 11 Dec. 2013, [Peer-reviewed], [Lead author], [International Magazine]
  English, Scientific journal, For the first time, the paramagnetic Zn(+) species was prepared successfully by the excitation with ultraviolet light in the region ascribed to the absorption band resulting from the 4s-4p transition of an atomic Zn(0) species encapsulated in an MFI-type zeolite. The formed species gives a specific electron spin resonance band at g = 1.998 and also peculiar absorption bands around 38,000 and 32,500 cm(-1) which originate from 4s-4p transitions due to the Zn(+) species with paramagnetic nature that is formed in MFI. The transformation process (Zn(0) → Zn(+)) was explained by considering the mechanism via the excited triplet state ((3)P) caused by the intersystem crossing from the excited singlet state ((1)P) produced through the excitation of the 4s-4p transition of an atomic Zn(0) species grafted in MFI by UV light. The transformation process was well reproduced with the aid of a density functional theory calculation. The thus-formed Zn(+) species which has the doublet spin state exhibits characteristic reaction nature at room temperature for an O2 molecule having a triplet spin state in the ground state, forming an η(1) type of Zn(2+)-O2(-) species. These features clearly indicate the peculiar reactivity of Zn(+) in MFI, whereas Zn(0)-(H(+))2MFI hardly reacts with O2 at room temperature. The bonding nature of [Zn(2+)-O2(-)] species was also evidenced by ESR measurements and was also discussed on the basis of the results obtained through DFT calculations.
• Further evidence for the existence of a dual-Cu+ site in MFI working as the efficient site for C2H6 adsorption at room temperature.
  Atsushi Itadani; Yusuke Sogawa; Akira Oda; Hiroe Torigoe; Takahiro Ohkubo; Yasushige Kuroda
  Langmuir : the ACS journal of surfaces and colloids, 29, 31, 9727, 33, 06 Aug. 2013, [International Magazine]
  English, Scientific journal, We have recently clarified the following point: a dual-type site, which is composed of a pair of monovalent copper ions (Cu(+)) formed in a copper-ion-exchanged MFI-type zeolite (CuMFI), functions as the active center for strong ethane (C2H6) adsorption even at room temperature rather than a single-type site composed of a Cu(+) ion. However, the character of the dual-Cu(+) site in a CuMFI is not yet fully understood. In this study, we have elucidated the nature of the active sites for C2H6 based on infrared (IR) and calorimetric data. On the basis of the results obtained, we came to the conclusion that the dual-Cu(+) site composed of Cu(+) ions giving the adsorption energy of 100 kJ mol(-1) and the absorption band at 2151 cm(-1) for carbon monoxide (used as a probe molecule) at room temperature functions as an adsorption site for C2H6. We also evaluated, for the first time, the interaction between the dual-Cu(+) site and C2H6 energetically, by the direct measurement of heat of adsorption. The value of 67 kJ mol(-1) that we recorded was higher than that for the single-Cu(+) site in this sample and also for other samples, such as NaMFI and HMFI.
• Unprecedented reversible redox process in the ZnMFI-H2 system involving formation of stable atomic Zn(0).
  Akira Oda; Hiroe Torigoe; Atsushi Itadani; Takahiro Ohkubo; Takashi Yumura; Hisayoshi Kobayashi; Yasushige Kuroda
  Angewandte Chemie (International ed. in English), 51, 31, 7719, 23, 27 Jul. 2012, [Peer-reviewed], [Lead author], [International Magazine]
  English, Scientific journal, In its element: Zn(2+) at the M7 site of MFI-type zeolites activates H(2), via ZnH and OH species, and leads to Zn(0) species. The Zn(0) species returns to its original state, a Zn(2+) ion, upon evacuation of the zeolite at 873 K (see picture). The formation of the Zn(0) species is supported by DFT calculations.

• 微小合金と疎水性空間を使ったメタンからメタノールへの選択酸化
  織田 晃, 化学と工業『ディビジョントピックス』, May 2026, [Lead author]
• In-situ far-IR法によるカルシウムイオン交換A型ゼオライトに賦与されたCO2およびN2O特異吸着現象の解明
  黒田泰重; 平木英; 小林生佳; 馬場春香; 大久保貴広; 織田晃; 池本夕佳; 森脇太郎, SPring-8/SACLA Information, 30, 1, 2025
• トルエン水素化を革新的に促進する省貴金属なヘテロアトムアンサンブルサイトの設計
  触媒 特集「単原子触媒」, 66, 5, 266, 271, 2024, [Lead author, Last author, Corresponding author]
• ゼオライト細孔内で観測されたAg(I)–Xe化合物形成を駆動力とする室温低圧下におけるXe選択捕集
  織田晃, ゼオライト, 1, 8, 2023, [Lead author, Last author, Corresponding author]
• 単原子触媒の魅力
  織田晃, 触媒, トピックス, 64, 2, 126, 126, 2022, [Lead author, Last author, Corresponding author]
• 動く原子状活性点
  織田晃, 化学「注目の論文」, 76, 6, 59, 60, 2021
• ゼオライトマトリックスを利用した亜鉛-オキシル結合の創出ならびにそのメタン活性化能の評価
  織田晃, 触媒, 特集「メタン転換技術の最新動向」, 62, 6, 381, 386, 2020, [Lead author, Last author, Corresponding author]
• ゼオライト場を利用した新奇活性酸素種の創製：室温でO2を可逆的に化学吸着する酸素イオン
  織田晃, Adsorption News, 33, 2, 2019, [Lead author, Last author, Corresponding author]
• MFI型ゼオライト中に存在する特異Al配列場を利用した既存金属の新奇電子状態の創出
  織田晃, Colloid & Interface Communication, 41, 4, 2016
• 室温付近で水素・メタン活性化能を示す特異な亜鉛イオンの創製場としてのMFI型ゼオライト
  織田晃; 鳥越裕恵; 黒田泰重, ゼオライト, 31, 88, 96, 2014, [Lead author]
• ゼオライトサブナノ空間を利用した原子状亜鉛の創製とその特異性
  織田晃; 鳥越裕恵; 黒田泰重, 55, 352, 357, 2013, [Lead author]
• Formation of Stable Monomeric Zn0 and Zn+ Species in MFI-Type Zeolite: Insight from in-situ XAFS Spectroscopy and DFT Calculation
  A. Oda; H. Torigoe; A. Itadani; T. Ohkubo; T. Yumura; H. Kobayashi; Y. Kuroda, Photon Factory Activity Report 2012 #30, Part A: Highlights and Facility Report, 44, 45, 2012

• ゼオライト内包超微小金属ナノ粒子触媒. 触媒年鑑「触媒技術の動向と展望2026」, ４．分野別触媒研究の現状と将来動向［１］触媒材料 a)金属触媒.
  織田 晃
  触媒学会, Jul. 2026, [Single work]
• ”計算科学" ゼオライトの基礎と応用
  講談社サイエンティフィク, May 2024, [Contributor]
• "極低圧領域での選択的CO2吸着材の開発" CO2の分離・回収・貯留の最新技術
  織田晃; 大久保貴広; 黒田泰重
  2022, 155-169, [Contributor]

• 固体表面原子の自発的挙動を活用した革新的触媒の創成
  織田晃
  第487回触媒科学研所コロキウム, 16 Oct. 2025, Japanese, Invited oral presentation
  [Invited]
• 無機固体表面上で自発的に組み上がるナノ構造体に着目した触媒反応開拓
  織田 晃
  第189回 フロンティア材料研究所学術講演会, 11 Mar. 2025, Japanese, Invited oral presentation
  [Invited]
• XAFSによる触媒の構造解析
  織田晃
  第28回名古屋大学DセンターVBLシンポジウム ～放射光を利用した先端計測と材料開発の関わり～, 21 Nov. 2024, Japanese, Invited oral presentation
  [Invited]
• 表面原子が自発的に混ざる、集まる、並ぶ現象を利用した原子スケール触媒設計
  織田晃
  日本化学会第104回春季年会 特別企画「グリーン固体触媒材料の精密設計」, 20 Mar. 2024, Japanese
  [Invited]
• メタン高度変換のための固体表面反応場のデザイン
  織田晃
  科学・反応システム分科会 講演会 ～様々な反応システムを活用するメタンの高度変換技術～, 23 Aug. 2023, Japanese
  [Invited]
• 水素キャリア製造プロセスの省貴金属化に資する単原子合金触媒の創製
  織田晃
  名古屋大学シンクロトロン光研究センターシンポジウム (2022), 16 Jan. 2023, Japanese
  [Invited]
• ゼオメタルの化学
  織田晃
  第6回ゼオライトセミナー, 16 Dec. 2022, Japanese
  [Invited]
• 単原子触媒を用いた低級炭化水素の選択酸化
  織田晃
  第11回SPring-8グリーンサスティナブルケミストリー研究会, 第82回SPring-8先端利用技術ワークショップ 「エネルギー-資源関連触媒と in situ/operando測定技術の新たな展開」, 15 Nov. 2022, Japanese
  [Invited]
• ゼオライト場を利用した既存元素の新奇電子状態の創出
  織田晃
  日本化学会研究会「低次元系光機能材料研究会」第8回研究講演会～低次元規則構造がもたらす新機能～, Sep. 2019, Japanese
  [Invited]
• ゼオライト場を利用した既存金属の新奇電子状態の創出
  織田晃
  第4回次世代天然ガス利用を考える若手勉強会, Jan. 2018, Japanese
  [Invited]
• ゼオライト場を利用した既存金属の新奇電子状態の創出
  織田晃
  第54回触媒研究懇談会, Jul. 2016, Japanese
  [Invited]
• ゼオライトサブナノ空間を特異反応場として利用した原子状亜鉛および一価イオン創製
  織田 晃; 大久保 貴広; 湯村 尚史; 小林 久芳; 黒田 泰重
  2013日本化学会中国四国支部大会, Nov. 2013, Japanese
  [Invited]
• ZnMFI中のH2, CH4活性化サイトモデルの構築とその妥当性
  織田晃
  第7回触媒道場 Dr. Candidate講演, Sep. 2013, Japanese
  [Invited]

• 日本化学会
• 触媒学会
• 石油学会
• 日本ゼオライト学会

• ゼオライト鋳型サブナノ構造体触媒で拓くメタン選択酸化
  科学研究費助成事業 基盤研究(B)
  Apr. 2026 - Mar. 2029
  織田晃
  日本学術振興会, Principal investigator, Competitive research funding
• 脱炭素社会実現に資する微小金属内包ゼオライトのオンデマンド合成基盤の構築
  NEDO「官民による若手研究者発掘支援事業」
  Oct. 2026 - Sep. 2028
  国立研究開発法人 新エネルギー・産業技術総合開発機構（NEDO）, 北海道大学 触媒科学研究所, Principal investigator
• 脱炭素社会に向けたアンモニア専焼発電排ガス中N2Oの高効率浄化触媒の開発
  2026年度研究助成
  Apr. 2026 - Apr. 2028
  一般財団法人 パロマ環境技術開発財団, Principal investigator
• エピタキシャル成長駆動原子層触媒設計が拓くメタン選択酸化
  科学研究費助成事業 挑戦的研究（萌芽）
  Jun. 2026 - Mar. 2028
  日本学術振興会, Principal investigator
• トルエン-メチルシクロヘキサン系水素キャリア技術の社会実装に向けた高耐久省貴金属触媒の創製
  2026年度助成金
  Apr. 2026 - Mar. 2028
  公益財団法人 池谷科学技術振興財団, Principal investigator
• 低温・高速アンモニア分解を実現する省貴金属触媒の創出とスケールアップ製造技術の確立
  2025年度研究助成活動
  Aug. 2025 - Jul. 2027
  一般社団法人カーボンリサイクルファンド, Principal investigator
• CO2水素化高速駆動触媒の合成技術の革新：省エネ化・省貴金属化・大規模化
  2026年度JKA補助事業 個別研究
  Apr. 2026 - Mar. 2027
  公益財団法人 JKA 競輪とオートレースの補助事業, Principal investigator, Competitive research funding
• サブナノサイズの自発性多元素間融合現象を利用した革新的脱水素触媒の創製
  科学研究費助成事業
  28 Jun. 2024 - 31 Mar. 2026
  織田 晃
  日本学術振興会, 挑戦的研究(萌芽), 名古屋大学, 24K21807
• 固体酸白金族元素が拓くメタン選択酸化触媒科学
  科学研究費助成事業
  01 Apr. 2023 - 31 Mar. 2026
  織田 晃; 沢辺 恭一
  本研究で挑むのは, 化学的に安定なメタンと酸素から一段階で望みの化成品へ低温低圧にも関わらず高選択的且つ高収量で合成する不均一触媒の設計である. ゼオライトサブナノ空間内に白金族元素を固体酸点として能動的に創出し, それらの構造や電子状態, 空間分布を超制御する. これらにより, 既存の化学では到底不可能なメタン選択酸化触媒を革新的に駆動する反応場の設計を狙う.
  一段階水熱合成手法を用い, 種々の固体酸白金族元素を内包したゼオライト触媒の設計に成功した. 元素に依存してメタン選択酸化活性及び選択率が異なることを確認し, 特定の元素で高い活性が発現することを見出した. 固体酸の重要性を示すために, 固体酸非含有貴金属内包ゼオライト, 即ち白金族元素をナノサイズの金属状態で内包させたゼオライトを比較触媒として設計した. 予想に反して, メタンからメタノール、あるいは合成ガスへの選択酸化に対して著しく高い活性を示す触媒が見出された. これは当初予定してなかった成果である. これまで, 固体酸含有ゼオライトにおいてのみ著しく速い反応速度が観測されていたが, 本研究によって, 固体酸を用いないメタン選択酸化反応経路の有用性が示唆された. これを端緒として, 固体酸白金族元素に限らず, 固体酸フリーの金属内包ゼオライトを用いた研究も展開することにした.
  上述の内容に加え, 貴金属を用いる本研究計画のきっかけとなった「エタンからエタノールへの選択酸化に有効なTiO2担持Pt触媒」におけるC-H酸化メカニズムを解明した.
  日本学術振興会, 基盤研究(B), 名古屋大学, 23K26452
• 固体表面を利用した新奇金属間化合物ナノ構造体の簡易設計と水素キャリア触媒への応用
  第51回岩谷科学技術研究助成
  Apr. 2025 - Mar. 2026
  公益財団法人 岩谷直治記念財団, Principal investigator
• 新奇貴金属原子層の自発性形成現象が拓くN2O分解触媒の革新的な低温駆動と省貴金属化
  学術研究活動助成事業
  Apr. 2025 - Mar. 2026
  公益財団法人 木下記念事業団, Principal investigator
• 水素社会実現に資する革新的省貴金属触媒の自在簡易設計学の開拓
  ENEOS 水素基金 2025年度研究助成金
  Oct. 2023 - Nov. 2025
  三井住友信託銀行, Principal investigator
• CO2 reduction drive at low pressure using CO2 pseudo high-pressure field
  Grants-in-Aid for Scientific Research
  20 May 2022 - 31 Mar. 2025
  織田 晃; 西村 好史
  カーボンニュートラル実現にはCO2還元技術の革新が必要である。特に、CO2還元時に投入する外部エネルギーや回収-触媒の多段階工程の削減が必要である。本研究ではCO2の回収に有効なゼオライトの空間内で水素化活性の高い金属サイトを高度にデザインすることで、CO2水素化を低温低圧で引き起こす反応場の設計と反応機構の解明を目的とする。
  初年度では、サブナノサイズの金属内包ゼオライトの設計手法と解析手法を確立した。本年度では、2-3 nmサイズに制御された合金ナノ粒子が内包されたゼオライトの合成手法を確立した。更に、固体酸点の濃度の制御も同時に行い、金属ナノ粒子と固体酸点との相乗効果をゼオライトの細孔内で能動的に引き起こした。これによって、メタネーションをはじめとするCO2水素化反応に対して高活性が発現することを見出した。また、低温-低圧域においても高い活性が確認された。
  A01班との連携により、常圧で逆水性ガスシフト反応を駆動する担持Mo-Pt触媒の開発に成功し、その活性起源を分光学的に明らかにした。この触媒の開発にあたり、担持触媒のユニークな局所構造や動的挙動の有用性が示唆されたため、新規な担持Pt触媒の設計と水素化への応用にも着手した。
  量子化学計算において、高精度なエネルギー計算とab initio分子動力学シミュレーションの併用により、低圧でCO2を多分子吸着可能な新奇活性点の予測に成功した。更に、金属内包ゼオライトのダイナミクスシミュレーションのスクリーニングを行い、ゼオライトに内包された金属種の特異なダイナミクスの予測に成功した。これら理論予測に基づき、触媒反応場設計指針を領域内で提言した。
  Japan Society for the Promotion of Science, Grant-in-Aid for Transformative Research Areas (B), Nagoya University, 22H05045
• Design of Low-temperature Oxidation Catalysts by Catalyst Nano-assembly
  Grants-in-Aid for Scientific Research
  01 Apr. 2022 - 31 Mar. 2025
  薩摩 篤; 沢辺 恭一; 織田 晃
  本申請研究では金属酸化物担体やゼオライト細孔内に金属を原子状で分散させたシングルアトム触媒に着目する.シングルアトム触媒は,100％の金属利用効率と, 全ての金属原子が担体酸化物と接して均一の活性サイトを形成している点から, 担持金属触媒の極めてシンプルなモデルとなる. 構造的な魅力と共に,特異的な触媒作用を発揮する「シングルアトム」触媒を対象として, 「シンプルな触媒系を用いて金属－担体相互作用を科学的な言葉で説明し, 意図した設計が出来ること」を高活性触媒での実証をターゲットとしている. 2023年度はシングルアトム触媒を水素化触媒にも展開した。水素キャリアとしてケミカルハイドライドが注目され中でもメチルシクロヘキサンートルエン系が有望視されている。水素の吸蔵－利用のための水素化－脱水素触媒にはもっぱら担持Pt触媒が用いられるが、Ptは希少で高価であるため有効利用が求められている。卑金属ナノ粒子を土台としてPtシングルアトム合金を形成することによりPtの有効利用が期待できる。本年度はCo/TiO2をベースとするPtシングルアトム触媒がPt当たりの水素化速度を従来のPt触媒の23倍まで高められることを見いだした. また, 触媒ナノアセンブリの新たな展開としてTiO2上にRuOxが自発的に単分子層を形成することを見いだした[業績2]. これはルチル型のTiO2とRuO2の結晶学的なフィティングが優れていることによる. 第2成分としてMn, Fe, Co, Ni, Cuを添加することにより単分子層のアスペクト比は変化し, Niの添加が最適であること, またCO酸化活性が最大となること見いだした. 単分子層触媒は引き続き検討する.
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Nagoya University, 23K23134
• アンモニア分解の低温低圧高速駆動を可能にする省貴金属触媒の自在簡易設計
  2024年度 単年度研究
  Apr. 2024 - Mar. 2025
  公益財団法人 池谷科学技術振興財団, Principal investigator
• カーボンニュートラル実現に資する天然ガス選択酸化触媒設計学の超探査
  研究助成
  Jul. 2023 - Jul. 2024
  公益財団法人日揮・実吉奨学会, Principal investigator
• 単原子合金ナノ粒子表面の構造-電子状態の超制御による革新的水素化触媒の創成
  カーボンニュートラル研究奨励金
  2023 - 2024
  永井科学技術財団, Principal investigator
• 固体表面を利用した省貴金属触媒の新奇自在設計と高難度分子転換への応用
  令和5年度 研究開発助成 一般課題
  2023 - 2024
  日比科学技術振興財団
• 単原子合金触媒の構造超制御による温室効果ガス改質反応開拓
  2023 - 2024
  内藤科学技術振興財団, Principal investigator
• Active creation of metal-oxyl species as the reaction intermediate in partial methane oxidation by applying the reaction field of zeolite
  Grants-in-Aid for Scientific Research
  01 Apr. 2020 - 31 Mar. 2023
  Oda Akira
  We succeeded in creating novel oxyl compounds of Ga(III) and In(III), characterizing novel ozonide compounds of Cd(II), Ga(III), and In(III), and evaluating the reactivity of Zn(II) and Ga(III) oxyl compounds. In the process of expanding our research to other metals, it became clear that the application of the oxyl creation method was limited, and we were not able to build a library on the structure/electronic state/reactivity of the oxyl compounds as much as we had originally planned. However, in the course of the study, we succeeded in designing a reaction field with the record activity for the selective oxidation of methane to formic acid, acetic acid, and methanol, respectively, and obtained new guidelines for the next phase of catalytic design studies for methane selective oxidation.
  Japan Society for the Promotion of Science, Grant-in-Aid for Early-Career Scientists, Nagoya University, 20K15297
• 無機固体表面上で自発的に生ずる多次元金属-担体間相互作用を利用した革新的酸化触媒の創成
  2023 - 2023
  公益財団法人 高橋産業経済研究財団
• 単原子合金面の設計に立脚した革新的水素キャリア製造技術の創成
  第34回助成研究【研究育成型】
  2022 - 2023
  東海産業技術振興財団, Principal investigator
• 固体表面が創る反応場上で自発的に生じる元素間融合現象を利用した革新的脱水素化触媒の創成
  第32回自然科学系学術研究助成
  2022 - 2023
  公益財団法人 大幸財団, Principal investigator
• 無機固体表面上で自発的に組みあがる新奇複合酸化物ナノ構造体の触媒への応用
  第30回一般研究助成
  2021 - 2022
  公益財団法人 立松財団
• Design and fine tuning of environmental catalysts based on in-situ/operando spectroscopy
  Grants-in-Aid for Scientific Research
  01 Apr. 2018 - 31 Mar. 2021
  Satsuma Atsushi
  The aim of this study is to find a design strategy of environmental catalysts based on the reaction mechanism analysis by in-situ/operando spectroscopies, and we obtained the following results: (1) Proposal of noble metal-free tandem catalyst which is combined a hydrocarbon preference oxidation catalyst and a NO-CO reaction catalyst. This is the world's first example that noble metal-free catalyst exhibited comparable deNOx activity to that of a noble metal catalyst. (2) Successful demonstration of selective exposure of active crystal planes and control of redox properties by metal- support interaction in Pd nanoparticles. (3) Design concept of hydrogen oxidation reaction catalyst for fuel cells by adsorption sites separation. Ru/Pt/C catalyst exhibited 2.4 times higher activity compared to a standard Pt/C catalyst.
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Nagoya University, 18H01787
• 低温メタン部分酸化反応を可能とする新奇触媒反応場の構築
  石油学会研究助成
  2020 - 2021
  石油学会, Principal investigator
• ゼオライト場を利用した既存金属の新奇電子状態の創出
  戦略的な研究開発の推進 戦略的創造研究推進事業 さきがけ
  2015 - 2018
  織田 晃
  既存元素の新物性を創出することは、現在の化学の基盤を開拓するのみならず、 我々の生活の質を向上させるためにも極めて重要です。本研究では、ゼオライト細孔内に「既存金属の新奇電子状態を創出する特異アルミニウム配列場」を高選択的に創り出す材料合成技術の開発、特異アルミニウム配列場を利用した「金属イオン交換ゼオライトへの新機能の附与」、さらには 「既存金属の新化学の展開」を目指します。
  科学技術振興機構, 岡山大学, Principal investigator
• ゼオライトサブナノ空間を特異反応場として利用した亜鉛原子および一価亜鉛イオン創製
  科学研究費助成事業
  01 Apr. 2013 - 31 Mar. 2016
  織田 晃
  MFI型ゼオライト中に存在する特異Al配列場を利用することにより新奇な物性を有する二価亜鉛イオンや原子状亜鉛、一価亜鉛イオンを創製できることを示してきた。本年度の研究ではそのような新奇電子状態を創出する性質を有するAl配列場のモデルの最適化を行い、既存金属の電子状態を操るための具体的な担持体設計指針を得た。そして、この成果に基づき、ゼオライト中のAl配列を高度に設計するゼオライト合成技術を確立し、利用すれば、既存金属の新奇電子状態を様々に創出し、既存金属の新化学の展開ならびにゼオライトへの新物性賦与が可能であることを提案した。
  日本学術振興会, 特別研究員奨励費, 岡山大学, 13J06974