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New catalyst design method based on semiconductor heterojunctions

Research Project

Project/Area Number 19K22078
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 27:Chemical engineering and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Kishimoto Fuminao  東京大学, 大学院工学系研究科(工学部), 助教 (00835738)

Project Period (FY) 2019-06-28 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2019: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Keywords半導体ヘテロ接合 / ナノシート / 酸化タングステン / オレフィンメタセシス / 固体触媒 / 半導体接合 / 炭化水素転換 / オレフィン転換
Outline of Research at the Start

本研究では、半導体担体と半導体触媒のヘテロ接合界面での電子移動に基づく新たな担体効果の実証に挑戦し、高難度オレフィン変換反応に対する触媒活性の発現・向上を可能とする触媒設計法を開拓する。半導体ヘテロ接合理論をもとに、半導体担体から半導体触媒へと電子が移動する構造を創出する。触媒として原子層厚(~1 nm)の半導体ナノシート触媒を用いれば、ヘテロ接合界面で半導体ナノシート触媒に移動してきた電子は、物質変換反応が起こる触媒表面に容易に到達し、ナノシートの触媒活性を向上させる。特に、電子逆供与モデルに基づく炭素-炭素二重結合の選択的切断が期待でき、高難度オレフィン変換反応を可能にする。

Outline of Final Research Achievements

In this study, we immobilized atomic layer-thick (~1 nm) tungsten oxide nanosheets on a substrate to demonstrate the catalytic reaction based on the unique electronic state of the nanosheets. The electronic state of the nanosheets was quantitatively clarified by X-ray photoelectron spectroscopy and Kelvin probe force microscopy, revealing that the electronic state of the nanosheets depends on that of the substrate. The catalytic activity of the tungstic acid nanosheets immobilized on SiO2 particle supports for the olefin metathesis reaction was successfully demonstrated.

Academic Significance and Societal Importance of the Research Achievements

高難度な化学反応を進行させるために不可欠な固体触媒において、その電子状態は触媒活性に大きな影響を与える。本研究では、異なる2つの物質(触媒)を接合させることで、電子状態を大きく変化させることが可能であることを、高度な測定手法によって実証することに成功した。この触媒が、近年世界的に不足しているプロピレンをエチレンを原料として製造することができるオレフィンメタセシス反応に利用できることを実証した。すなわち、異種物質の接合による電子状態制御によって固体触媒設計が可能であることを新たに開拓した。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (5 results)

All 2021 2020 2019

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 1 results)

  • [Journal Article] Determination and perturbation of the electronic potentials of solid catalysts for innovative catalysis2021

    • Author(s)
      Qi Xingyu、Shinagawa Tatsuya、Kishimoto Fuminao、Takanabe Kazuhiro
    • Journal Title

      Chemical Science

      Volume: 12 Issue: 2 Pages: 540-545

    • DOI

      10.1039/d0sc05148a

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Photocatalytic oxygen evolution triggered by photon upconverted emission based on triplet?triplet annihilation2021

    • Author(s)
      Kageshima Yosuke、Tateyama Shutaro、Kishimoto Fuminao、Teshima Katsuya、Domen Kazunari、Nishikiori Hiromasa
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 23 Issue: 9 Pages: 5673-5679

    • DOI

      10.1039/d0cp06139e

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Aryl radical initiators accumulated within layered silicates realize polystyrene with directly and regioselectively bonded aryl-terminal groups2021

    • Author(s)
      Kishimoto Fuminao、Hisano Kyohei、Wakihara Toru、Okubo Tatsuya
    • Journal Title

      Dalton Transactions

      Volume: 50 Issue: 3 Pages: 835-839

    • DOI

      10.1039/d0dt04156d

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dense Integration of Stable Aromatic Radicals within the Two-Dimensional Interlayer Space of Clay Minerals via Clay-Catalyzed Deamination of Arylammoniums2020

    • Author(s)
      Kishimoto Fuminao、Hisano Kyohei、Wakihara Toru、Okubo Tatsuya
    • Journal Title

      Chemistry of Materials

      Volume: 32 Issue: 20 Pages: 9008-9015

    • DOI

      10.1021/acs.chemmater.0c03347

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Kinetics of Photoinduced Electron Transfer in Alternately Stacked Eu3+:LaNb2O7? and W2O72? Nanosheets As Demonstrated by f?f Radiative Transition of Doped Eu3+2019

    • Author(s)
      Kishimoto Fuminao、Mochizuki Dai、Maitani Masato M.、Suzuki Eiichi、Wada Yuji
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 123 Issue: 50 Pages: 30029-30038

    • DOI

      10.1021/acs.jpcc.9b07037

    • Related Report
      2019 Research-status Report
    • Peer Reviewed

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Published: 2019-07-04   Modified: 2022-01-27  

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