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Studies on dynamic surface structure change and reactivity on model alloy catalysts

Research Project

Project/Area Number 17K14432
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Physical chemistry
Research InstitutionInstitute for Molecular Science (2018-2019)
The University of Tokyo (2017)

Principal Investigator

Koitaya Takanori  分子科学研究所, 物質分子科学研究領域, 助教 (60791754)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Keywords二酸化炭素 / 水素 / 銅-亜鉛合金触媒 / 雰囲気光電子分光 / 水 / 銅-亜鉛合金 / 銅 / 亜鉛 / パラジウム / イリジウム / メタン / 酸素 / 表面・界面物性 / 合金触媒 / 水素化反応
Outline of Final Research Achievements

Reactivity of metal catalysts can be modified by alloying. Surface structure and composition of alloy catalysts is not stable, but changed dynamically depending on reaction condition. In this study, model alloy catalysts were formed by vacuum deposition of metal atoms on single-crystal metal surfaces, and reaction mechanism on the model catalysts was investigated by in-situ spectroscopic measurements. CO2 hydrogenation on copper-zinc alloy surface was studied as a model system by operando ambient-pressure XPS. Surface oxidation state and reactivity depend significantly on the gas-phase condition, such as pressure and composition.

Academic Significance and Societal Importance of the Research Achievements

本研究では、反応条件下でのモデル合金触媒表面の電子状態をその場観測することによって、反応メカニズムを解明し表面反応活性を左右する要素を明らかにすることを目的とした。反応条件下での分光研究により、気相の組成や圧力に依存して反応活性や表面状態が変化することが明らかとなった。この結果は、触媒反応活性サイトの本質を明らかにするには、触媒表面そのものだけではなく表面に接する気相の効果を考慮することが重要であることを示している。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (7 results)

All 2019 2018

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (4 results) (of which Int'l Joint Research: 1 results,  Invited: 3 results)

  • [Journal Article] Surface Chemistry of Carbon Dioxide on Copper Model Catalysts Studied by Ambient-Pressure X-ray Photoelectron Spectroscopy2019

    • Author(s)
      Koitaya Takanori、Yamamoto Susumu、Matsuda Iwao、Yoshinobu Jun
    • Journal Title

      e-Journal of Surface Science and Nanotechnology

      Volume: 17 Issue: 0 Pages: 169-178

    • DOI

      10.1380/ejssnt.2019.169

    • NAID

      130007741422

    • ISSN
      1348-0391
    • Year and Date
      2019-11-02
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] CO2 Activation and Reaction on Zn-Deposited Cu Surfaces Studied by Ambient-Pressure X-ray Photoelectron Spectroscopy2019

    • Author(s)
      Koitaya Takanori、Yamamoto Susumu、Shiozawa Yuichiro、Yoshikura Yuki、Hasegawa Masahiro、Tang Jiayi、Takeuchi Kaori、Mukai Kozo、Yoshimoto Shinya、Matsuda Iwao、Yoshinobu Jun
    • Journal Title

      ACS Catalysis

      Volume: 9 Issue: 5 Pages: 4539-4550

    • DOI

      10.1021/acscatal.9b00041

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Reversible low-temperature redox activity and selective oxidation catalysis derived from the concerted activation of multiple metal species on Cr and Rh-incorporated ceria catalysts2019

    • Author(s)
      Satoru Ikemoto, Xiubing Huang, Satoshi Muratsugu, Shoko Nagase, Takanori Koitaya, Hirosuke Matsui, Gen-ichi Yokota, Takatoshi Sudoh, Ayako Hashimoto, Yuanyuan Tan, Susumu Yamamoto, Jiayi Tang, Iwao Matsuda, Jun Yoshinobu, Toshihiko Yokoyama, Shinpei Kusaka, Ryotaro Matsuda, Mizuki Tada
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 21 Issue: 37 Pages: 20868-20877

    • DOI

      10.1039/c9cp04625a

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] 軟X線雰囲気光電子分光を用いたメタン転換反応のオペランド観測2019

    • Author(s)
      小板谷 貴典
    • Organizer
      2019年日本表面真空学会学術講演会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Catalytic activation of C1 molecules studied by ambient-pressure XPS2019

    • Author(s)
      Takanori Koitaya
    • Organizer
      The 81st Okazaki Conference "Forefront of Measurement Technologies for Surface Chemistry and Physics in Real-Space, k-Space, and Real-Time"
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] オペランド分光法による反応中の触媒表面の直接観測2018

    • Author(s)
      小板谷 貴典
    • Organizer
      第122回触媒討論会討論会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Pd(110)表面におけるメタンの吸着2018

    • Author(s)
      小板谷 貴典
    • Organizer
      日本物理学会 第73回年次大会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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