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Nakasaka Yuta

Faculty of Engineering　Applied Chemistry　Chemical EngineeringAssociate Professor

Researcher basic information

■ Degree
  • 博士（工学）, 北海道大学
■ URL
researchmap URLホームページURL■ Various IDs
J-Global ID■ Research Keywords and Fields
Research Field
  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering), Chemical reaction and process system engineering
■ Educational Organization

Career

■ Career
Career
  • May 2019 - Present
    Hokkaido University, 工学(系)研究科(研究院), 准教授
  • Feb. 2012 - Apr. 2019
    Hokkaido University, 工学(系)研究科(研究院), 助教
  • Jan. 2010 - Jan. 2012
    Hokkaido University, Faculty of Engineering, 博士研究員
Committee Memberships
  • Mar. 2023 - Present
    化学工学会北海道支部, 常任幹事, Society
  • Mar. 2020 - Present
    化学工学会 反応工学部会 触媒反応工学分科会, 幹事, Society
  • May 2016 - Present
    一般社団法人触媒学会 北海道支部, 幹事, Society
  • May 2012 - Present
    石油学会 ジュニアソサイアティ, 幹事, Society
  • Mar. 2019 - Feb. 2022
    化学工学会 北海道支部, 庶務幹事, Society
  • May 2018 - May 2021
    触媒学会, 触媒誌編集委員, Society
  • Mar. 2016 - Feb. 2020
    化学工学会 反応工学部会 触媒反応工学分科会, 会計担当幹事, Society
  • Apr. 2013 - Mar. 2016
    化学系学協会北海道支部, 冬季研究発表会実行委員, Society
  • Apr. 2013 - Mar. 2016
    触媒学会北海道支部, オーロラ委員, Society
  • Mar. 2015 - Feb. 2016
    日本化学会北海道支部, 会計幹事, Society
  • Jun. 2015
    ZMPC2015 実行委員, Society

Research activity information

■ Papers
■ Other Activities and Achievements
■ Books and other publications
  • バイオマス材料の開発と応用
    第3章 第2節
    （株）技術情報協会, Mar. 2023, 9784861049408, [Contributor]
  • 触媒劣化 : 原因, 対策と長寿命触媒開発
    監修:室井, 高城; 増田, 隆夫, 第3章-3、第4章-6
    シーエムシー出版, Jan. 2018, 9784781313146, v, 295p, Japanese, [Contributor]
  • 高機能ゼオライトの最新技術
    馬場, 俊秀, 第４章-6 ゼオライト触媒内の拡散と反応活性
    シーエムシー出版, Nov. 2015, 9784781310954, v, 207p, Japanese, [Contributor]
■ Lectures, oral presentations, etc.
  • ゼオライト触媒内における分子の拡散現象と反応速度への影響
    中坂佑太
    第4回ゼオライトセミナー, 16 Oct. 2020
    [Invited]
  • ゼオライト細孔内におけるSCR反応物質の拡散現象
    中坂佑太
    第5回 排気触媒システム部門委員会（公開委員会）, 04 Mar. 2019
    [Invited]
■ Syllabus
  • 反応工学特論, 2024年, 修士課程, 総合化学院
  • マイクロ・ナノ化学, 2024年, 修士課程, 総合化学院
  • 大学院共通授業科目（一般科目）：自然科学・応用科学, 2024年, 修士課程, 大学院共通科目
  • 応用化学学生実験Ⅳ, 2024年, 学士課程, 工学部
  • 反応工学, 2024年, 学士課程, 工学部
  • 計算機演習, 2024年, 学士課程, 工学部
■ Affiliated academic society
  • THE CHEMICAL SOCIETY OF JAPAN
  • JAPAN ASSOCIATION OF ZEOLITE
  • THE JAPAN PETROLEUM INSTITUTE
  • THE SOCIETY OF CHEMICAL ENGINEERS, JAPAN
  • CATALYSIS SOCIETY OF JAPAN
■ Research Themes
  • Development of advanced zeolite catalysts based on retrosynthetic analysis
    Grants-in-Aid for Scientific Research
    01 Apr. 2021 - 31 Mar. 2024
    横井 俊之; 中坂 佑太; 尾澤 伸樹
    本研究は下記の3つの項目、研究項目A「ゼオライトナノ空間内での金属種の位置・状態を制御する手法の開発」，研究項目B「反応工学・表面化学・計算化学アプローチの融合による触媒設計」，研究項目C「触媒設計に基づく触媒調製と触媒性能評価」から構成されている．項目Aに関して、Rh種含有ゼオライトにおけるRh種の状態制御に取り組んだ．
    Rhイオン交換Y型ゼオライト（R-Y）とアモルファスシリカ（Rh-ASA）をイオン交換法により調製した．調製したRh種含有触媒は，研究項目B「反応工学・表面化学・計算化学アプローチの融合による触媒設計」により，詳細に構造解析を行った．その結果，Y上では，優先的に孤立したRhカチオン種が形成され，ASA上では，主にRh酸化物が形成されていた．これらの触媒試料のメタン酸化的改質反応に対する触媒性能を評価した．その結果， Rh-Yの触媒寿命はRh-ASAと比較し長寿命であった．これは，孤立Rhカチオン種がゼオライト骨格との静電的相互作用によって粒子の凝集が抑制されたためである．さらに，Rh-Yは分散性が高いため，Rh含有量が少なくても高い触媒活性を示した．これらの実験結果に基づいて，メタン酸化的改質反応におけるRh活性種を明らかにすると主に，活性種の安定化にゼオライト骨格が有効であることを実証した．今後はゼオライトの骨格構造の影響を検討し、Rh種の位置、状態制御を達成していく計画である。
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Tokyo Institute of Technology, 21H01714
  • Synthesis of Zeolites including transition metal oxide nanoparticles and application for innovative catalytic reaction
    Grants-in-Aid for Scientific Research
    01 Apr. 2019 - 31 Mar. 2022
    Masuda Takao
    This study succeeded in preparation of zeolites including transition metal oxide nanoparticle. Not only the size of metal oxide nanoparticle in zeolite but also crystal size of zeolite including the nanoparticle can be controlled by preparation method developed in this work. In addition, the method enabled us to introduce several kinds of transition metal oxide nanoparticle in zeolite. The structure can suppress sintering of the nanoparticle under higher temperature condition. MFI-type zeolite including FeOx nanoparticle was used for catalytic cracking of butylbenzene (model compounds of heavy oil) and for catalytic reaction of biomass derived component. The catalyst showed higher selectivity for target product as compared to the conventional FeOx catalyst.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A), Hokkaido University, 19H00836
  • Diffusion of heteroatom containing hydrocarbons within zeolite catalyst
    Grants-in-Aid for Scientific Research
    01 Apr. 2019 - 31 Mar. 2022
    Nakasaka Yuta
    In this study, intracrystalline diffusivities of heteroatom containing hydrocarbons within MFI-type and Y-type zeolites were measured in liquid phase and sub-, and super-critical fluid. Because phenols preferentially adsorb on acid site of zeolites, diffusivity of phenols were slower than that of toluene in MFI-type zeolite. Solvents coexist in Y-type zeolite, which have nano space larger than phenol, affect intracrystalline diffusivity of phenols in Y-type zeolite. In addition, phenol production from p-propylphenol was conducted over MFI-type zeolite in supercritical fluid of benzene. Diffusion of phenols slowed apparent reaction rate of the reaction when zeolite crystal size was large.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, 19K05136
  • Creation of structured active species utilizing zeolite framework
    Grants-in-Aid for Scientific Research
    28 Jun. 2019 - 31 Mar. 2021
    Masuda Takao
    This study challenged immobilization of active species inside nano space in ferrisilicate with zeolite structure utilizing their unique pore surface properties. Ferrisilicate with MFI-type and *BEA-type zeolite structure and ferroaluminosilicate with Y-type zeolite structure was prepared. Iron ion and 2,2-bipyridine were introduced into their pore and organometallic complex was formed. Condition of the organometallic complex inside the ferrisilicate was different from that inside aluminosilicate (zeolite), indicating pore surface property affect the condition of complex. The Y-type ferroaluminosilicate with organometallic complex was applied as catalyst for phenol production from benzene in liquid phase. The catalyst showed higher activity as compared with Y-type zeolite with the complex.
    Japan Society for the Promotion of Science, Grant-in-Aid for Challenging Research (Exploratory), Hokkaido University, 19K22075
  • Development of a new class of zeolite catalyst with ultra-high selective reaction space by controlling the location of active sites with atomic-scale
    Grants-in-Aid for Scientific Research
    09 Oct. 2018 - 31 Mar. 2021
    Yokoi Toshiyuki
    This project was based on the control of the location of catalytic active sites derived from heteroatoms in zeolite framework, and accurate evaluation of the location of the active sites, and clarification of the relationship between the location of catalytic active site and the catalytic performance in the MTO reaction. The principal investigator, Dr. Yokoi, developed a method for controlling the location of catalytic active sites derived from heteroatoms in zeolite framework, and evaluate the catalytic performance. The international collaborator, Prof. Ute Kolb, focused on the development of the evaluation method of catalytic active sites based on advanced transmission electron microscopic technique. Other Japanese colleagues, Dr. Tsunoji and Dr. Moteki, investigated on the type of zeolites and active species. Dr. Nakasaka designed the location of active sites in zeolite framework in terms of chemical engineering including diffusion process.
    Japan Society for the Promotion of Science, Fund for the Promotion of Joint International Research (Fostering Joint International Research (B)), Tokyo Institute of Technology, 18KK0136
  • Development of phase transfer adsorbent utilizing specific adsorption properties of ZIFs
    Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Exploratory)
    30 Jun. 2017 - 31 Mar. 2019
    MASUDA Takao
    This study challenged to find possibilities of new separation process using specific adsorption properties of ZIFs (zeolitic Imidazolate Frameworks) and controlling adsorption velocity. Although aromatics and oxygenated cyclic hydrocarbons adsorbed on ZIF-8 well, saturated cyclic hydrocarbons hardly adsorbed on ZIF-8. By decreasing particle size of ZIF-8, adsorption equilibrium time for 1,4-dioxane adsorption on ZIF-8 is confirmed to be shorter. 1,4-dioxane adsorption using ZIF-8 was carried out in water and in organic solution. Adsorption isotherm of 1,4-dixone on ZIF-8 in low equilibrium concentration region depended on the solvent. Based on the information obtained in this study, possibility of continuous adsorptive separation system of cyclic organics using phase transfer of ZIFs between organic phase and water phase.
    Japan Society for the Promotion of Science, Grant-in-Aid for Challenging Research (Exploratory), Hokkaido University, 17K19001
  • Diffusion mechanism of hydrocarbons within zeolite in high pressure liquid phase and supercritical fluid
    Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)
    01 Apr. 2017 - 31 Mar. 2019
    NAKASAKA Yuta; KUBOTA yoshihiro; INAGAKI satoshi; MASUDA takao
    In this study, measurement method for diffusivity of aromatics within zeolite pore under sub- and super-critical conditions by constant volumetric method was established. Above 200 degree C, diffusivities of these cyclic hydrocarbons within pure silica zeolite (silicalite-1 and Si-beta) were decreased with increasing measured temperature and took minimum value around critical temperature of solvent. Generation of diffusion molecule-solvent cluster enhanced diffusion resistance at pore mouths leading to decrease the diffusivity. Toluene diffusivity within K-ZSM-5 was increased with increasing acid site of zeolite. Formation of diffusion molecule-solvent molecular cluster is considered to be suppressed by toluene adsorption on zeolite acid site.
    Japan Society for the Promotion of Science, Grant-in-Aid for Young Scientists (B), Hokkaido University, 17K14856
  • Development of catalytic process for producing petroleum related chemicals from base units constituting lignocellulosic biomass
    Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)
    01 Apr. 2015 - 31 Mar. 2018
    Masuda Takao
    Based on our new concept of total resourcing of lignocellulosic biomass as chemical feedstock, fundamental technique of catalytic reaction process was developed for utilizing aromatic structure in depolymerized lignin, and producing feedstock of aromatic polymer. As a result, we have found the following three achievements: 1) furan ring and aliphatic ether bond were successfully decomposed by in-situ hydrocracking using methanol as a hydrogen source with Pt/Al2O3 catalyst. 2) p-Propylphenol was converted into aromatic amines, which could be employed as monomer feedstock of engineering plastics, using NH3 gas with zeolite catalysts. 3) Transalkylation of p-propylphenol in benzene solvent co-produced phenol and C3-benzenes using zeolite catalysts.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A), Hokkaido University, 15H02314
  • Upgrading of low-rank coal via deoxygenation and recovery of aromatic chemicals
    Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research
    01 Apr. 2015 - 31 Mar. 2017
    Masuda Takao
    In this study, we investigated two-step process for converting low-rank coal into high-rank coal and recovering aromatic compounds. Regarding to the upgrading of low-rank coal (1st step), non-polar solvent such as toluene was found to be appropriate for co-solvent of water. We examined the effect of reaction conditions and succeeded in producing bituminous-like coal with a high yield at 350 degree C for 2 hour. Next, brown coal-derived organic phase was employed in the reaction over iron oxide-based catalyst. Depolymerization of brown coal-derived compounds proceeded, and aromatic compounds increased after the reaction. Moreover, this process was applied to peat under optimal conditions, resulting in the conversion into sub-bituminous-like coal.
    Japan Society for the Promotion of Science, Grant-in-Aid for Challenging Exploratory Research, Hokkaido University, 15K14218
  • Development of a catalyst and reaction field for conversion of unused fossil resources into lighter fuels
    Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
    01 Apr. 2013 - 31 Mar. 2016
    Tago Teruoki; FUJITSUKA Hiroyasu; MASUDA Takao; NAKASAKA Yuta
    From the perspective of diversification of energy resources, a technological development which can convert unused fossil resources into useful fuels has been required. Especially, oil sand bitumen is one of the promising candidates, of which the deposit is larger than that of the petroleum. Consequently, we have developed iron oxide (FeOx) composite catalysts which can convert heavy oil into lighter fuel. In this study, Ti-Fe and Ti-Zr mixed-oxide catalysts were newly developed for oxidative and acid-catalyzed cracking of oil sand bitumen into lighter fuels, respectively. Moreover, it was revealed that the sub-critical water condition was efficient for suppressing coke formation. We also investigated the major reaction pathways for decomposition of bitumen over FeOx-based catalyst under sub-critical water condition, by the numerical simulation based on the lamping model.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), 25289277
  • Development of new preparation method for zeolite-coating noble metal nanoparticle with bird-cage structure by emulsion method
    Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research
    01 Apr. 2013 - 31 Mar. 2015
    TERUOKI Tago; MASUDA Takao; NAKASAKA Yuta
    Major objective of this study is to develop a preparation method for zeolite-coating metal nanoparticle with bird-cage structure. Rhodium-complex nanoparticles were first prepared in micro-emulsion solution, followed by formation of MFI zeolite layer on the complex nanoparticles. TEM observation and H2-pulse methods, it was revealed that Rh nanoparticles with the size of approximately 3 nm were completely coated with MFI zeolite (Rh@MFI bird-cage material). Moreover, the Rh nanoparticle in the bird-cage material possessed strong resistance to sintering at high temperature (500～700℃). Because Rh inside the MFI zeolite are oxidized and reduced, a molecule can reach the Rh nanoparticles immobilized inside the MFI zeolite. Finally, MFI zeolite-coating Pt nanoparticle with bird-cage structure was successfully prepared by the same experimental procedure.
    Japan Society for the Promotion of Science, Grant-in-Aid for Challenging Exploratory Research, Hokkaido University, 25630352
  • Preparation of mono-dispersed ZIF-8 nanocrystals and its application for adsorption separation
    Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)
    01 Apr. 2013 - 31 Mar. 2015
    NAKASAKA Yuta
    ZIF-8 synthesis in aqueous solution using non-ionic surfactant was carried out. Mono-dispersed ZIF-8 nanocrystal was successfully prepared by addition of non-ionic surfactant. Crystal size of ZIF-8 was decreased with increasing HLB (Hydrophilic Lipophilic Balance) value of non-ionic surfactant. In addition, ZIF-8 crystal could be also controlled by synthesis temperature. ZIF-8 adsorption property of hydrocarbon and alcohols were evaluated. Hydrocarbon and alcohol with smaller molecular size showed higher adsorption property. Diffusivity of n-hexane and 1-hexene within ZIF-8 crystal were measured. The diffusivity of n-hexane and 1-hexene were close each other regardless of unsaturated bond existence in diffusion molecule.
    Japan Society for the Promotion of Science, Grant-in-Aid for Young Scientists (B), Hokkaido University, 25820386
  • Preparation of Zeolite Nano-sized Crystals as Structured Active Sites and Highly Shape-selective Reaction Process with Them
    Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
    01 Apr. 2012 - 31 Mar. 2015
    MASUDA Takao; TAGO Teruoki; NAKASAKA Yuta
    Nano-sized crystals of MFI, MOR, MTW and TON zeolites were successively synthesized. These crystals can be regarded as structured active sites with negligibly small resistance to mass transfer. Furthermore, these acidic properties were succeeded to be controlled by inserting Fe into their frameworks. MTW nano-sized crystal catalyst thus obtained showed high activity for methylation of 2-methyl-naphtalene. The deactivation of the catalyst could be remarkably prevented in liquid phase reaction under high pressures. MTW nano-sized crystal-layered catalyst membranes were successively prepared. The research on their application to the methylation is continuing, to confirm its validity.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 24360325
  • Development of Reaction Field for Converting Directly Polyalcohols to Allyl Compounds
    Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research
    01 Apr. 2012 - 31 Mar. 2014
    MASUDA Takao; TAGO Teruoki; NAKASAKA Yuta
    Main object of this research is to develop a catalytic reaction process to achieve direct allyl compounds synthesis from liner polyalcohols. Potassium supported iron oxide catalysis containing zirconia or alumina showed higher allyl alcohol yield from glycerol compared to the glycerol conversion over the iron oxide catalyst without potassium. In addition, it was clarified that polyalcohol conversion with formic acid, which is hydrogen donor, over the potassium supported iron oxide catalysis increase allyl compounds yield. Moreover, developed catalyst was effective for allyl alcohol formation from crude glycerol generated as a by-product in biodiesel production process.
    Japan Society for the Promotion of Science, Grant-in-Aid for Challenging Exploratory Research, Hokkaido University, 24656477
  • Development of a new size-control method for nano-crystalline zeolite and its rational design as a catalyst
    Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
    2010 - 2012
    TAGO Teruoki; MASUDA Takao; NAKASAKA Yuta
    Main objective of this research is a size-controlled synthesis for zeolite crystal and a development of design method for nano-zeolite catalyst. Various types of zeolites (MFI, TON, MOR, BEA, FAU and MTW) were synthesized and their crystal sizes could be successfully controlled. Especially, in MFI-，MOR-，MTW-，TON-type zeolites, the nano-crystalline zeolites with the size below 100 nm and macro-crystalline zeolite with the size above 1000 nm were obtained.Acrolein production from glycerol and 2,6-dimethyl naphthalene (2,6-DMN) production from 2-methyl naphthalene were conducted using zeolite catalysts. It is found that TON zeolite exhibits a high yield of acrolein above 80 % and that 2,6-DMN is selectively produced using MFI and MTW zeolites. Moreover, the crystal sizes of zeolite affect the product selectivity as well as the catalyst stability, the values of which are drastically improved by applying the nano-crystalline zeolite as a catalyst.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, 22560755
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