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Development of dehydrogenative cross-coupling reactions by blended catalysts

Research Project

Project/Area Number 20K21108
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 InstitutionKyoto University

Principal Investigator

Yoshida Hisao  京都大学, 人間・環境学研究科, 教授 (80273267)

Project Period (FY) 2020-07-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2021: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Keywords光触媒 / カップリング / 脱水素的カップリング / ブレンド触媒 / クロスカップリング / 脱水素的クロスカップリング
Outline of Research at the Start

光触媒による脱水素的クロスカップリング反応(DCC反応)では,常温で余分な試薬を消費せずに,2つの有機分子のそれぞれの炭素-水素結合を切断して炭素-炭素結合を形成することによって目的生成物と水素分子を直接合成できる.最近,研究代表者は,酸化チタン光触媒とパラジウム触媒を物理混合した「ブレンド触媒」が有機化合物と芳香環との間のDCC反応を促進することを発見した.そこで本研究では,このブレンド触媒による反応機構を解明し,ブレンド比やパラジウム触媒を最適化して高活性化を達成し,さらには,ブレンド触媒の特徴を活かした他の光触媒的DCC反応にも展開する.

Outline of Final Research Achievements

Development of dehydrogenative cross-coupling (DCC) reactions were examined by using “blended catalyst” consisting of photocatalyst and supported metal catalyst. Methanol reforming reaction was conducted in a flow reactor, where photocatalyst and metal catalyst were set on the upstream and downstream, respectively, and the progress of the reaction to form molecular hydrogen confirmed the the assumed reaction mechanism with the blended catalyst is acceptable. Study of DCC reaction with many kinds of TiO2 photocatalyst statistically revealed that the photocatalytic reaction rate can be explained by the product of specific surface area and lifetime of the photoexcited electron hole pairs. Some new DCC reactions with pyridine were found, where the adsorbed molecules participate in the photoexcitation. Photocatalysts for dehydrogenative homo-coupling of methane or ethane were also developed. Finally, the blend catalyst has been developed by using metallic alloy catalysts.

Academic Significance and Societal Importance of the Research Achievements

光触媒と金属助触媒の物理混合(ブレンド触媒)、そのどちらか一方では達成できない化学反応も達成できることが示され、独立な触媒設計を可能とした点で今後の展開に対し意義深い。光触媒の反応速度が「比表面積と励起電子正孔の寿命の積」という指標で説明できることも示し長く議論されてきた構造物性活性相関に一つの解を与えたことも学問的に有意義である。新展開として、吸着分子光励起型のピリジンとのDCC反応や、メタンやエタンのホモカップリングにも応用できることが示されたことにより、本概念の一般性が示された。また金属触媒を合金化することでブレンド触媒を高活性化できたことも今後の発展につながる成果である.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (19 results)

All 2023 2022 2021 2020

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (13 results) (of which Int'l Joint Research: 5 results)

  • [Journal Article] Gallium oxide assisting Ag-loaded calcium titanate photocatalyst for carbon dioxide reduction with water2023

    • Author(s)
      Hongxuan Qiu, Akira Yamamoto, Hisao Yoshida
    • Journal Title

      ACS Catalysis

      Volume: 13 Issue: 6 Pages: 3618-3626

    • DOI

      10.1021/acscatal.2c06038

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Particle Size-Dependent Trap States of Photoexcited Carriers in Anatase TiO2 Nanoparticles2023

    • Author(s)
      Shimpei Naniwa, Kosaku Kato, Akira Yamamoto, Hisao Yoshida, Akira Yamakata
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 127 Issue: 8 Pages: 4295-4302

    • DOI

      10.1021/acs.jpcc.2c08125

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nonoxidative coupling of ethane with gold loaded photocatalysts2022

    • Author(s)
      Surya Pratap Singh, Akira Yamamoto, Hisao Yoshida
    • Journal Title

      Catal. Sci. Technol.

      Volume: 12 Issue: 5 Pages: 1551-1561

    • DOI

      10.1039/d1cy02193a

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] A Pd-Bi Dual-Cocatalyst-Loaded Gallium Oxide Photocatalyst for Selective and Stable Nonoxidative Coupling of Methane2021

    • Author(s)
      Singh Surya Pratap, Yamamoto Akira, Fudo Eri, Tanaka Atsuhiro, Kominami Hiroshi, Yoshida Hisao
    • Journal Title

      ACS Catalysis

      Volume: 11 Issue: 22 Pages: 13768-13781

    • DOI

      10.1021/acscatal.1c03786

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Ligand-to-metal charge transfer of a pyridine surface complex on TiO<sub>2</sub> for selective dehydrogenative cross-coupling with benzene2021

    • Author(s)
      Naniwa Shimpei、Hishitani Shinichiro、Yamamoto Akira、Yoshida Hisao
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 23 Issue: 19 Pages: 11366-11373

    • DOI

      10.1039/d1cp00496d

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Visible light-induced Minisci reaction through photoexcitation of surface Ti-peroxo species2021

    • Author(s)
      Naniwa Shimpei、Yamamoto Akira、Yoshida Hisao
    • Journal Title

      Catalysis Science & Technology

      Volume: - Issue: 10 Pages: 3376-3384

    • DOI

      10.1039/d1cy00248a

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 光触媒的ベンゼン直接シアノメチル化反応における助触媒効果2023

    • Author(s)
      大濱 開, 鄒 可昕, 山本 旭, 吉田 寿雄
    • Organizer
      日本化学会 第103春季年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Development of K2Ti6O13 photocatalyst calcined at various temperatures for CO2 reduction with water as an electron donor2023

    • Author(s)
      Hiroki Yasumura, Akira Yamamoto, Hisao Yoshida
    • Organizer
      日本化学会 第103春季年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Photocatalytic nonoxidative coupling of methane over the Pd-Bi loaded gallium oxide2022

    • Author(s)
      Surya Pratap Singh, Akira Yamamoto, Eri Fudo, Atsuhiro Tanaka, Hiroshi Kominami, Hisao Yoshida
    • Organizer
      The 9th Tokyo Conference on Advanced Catalytic Science and Technology
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Gallium oxide assisting Ag-loaded calcium titanate photocatalyst for carbon dioxide reduction with water2022

    • Author(s)
      Hongxuan Qiu, Akira Yamamoto, Hisao Yoshida
    • Organizer
      12th International Conference on Environmental Catalysis
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Photocatalytic benzene methylation by acetic acid2022

    • Author(s)
      Kexin Zou, Akira Yamamoto, Hisao Yoshida
    • Organizer
      第130回触媒討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Barium Titanate Photocatalysts for CO2 reduction with water2022

    • Author(s)
      Shuwei Liu, Hongxuan Qiu, Can Wang, Akira Yamamoto, Hisao Yoshida
    • Organizer
      Osaka-Kansai International Symposium on Catalysis
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] アナターゼ酸化チタンの光触媒活性と比表面積及びキャリア寿命の関係に関する定量的研究2022

    • Author(s)
      浪花晋平 ,加藤康作,山方啓,山本旭,吉田寿雄
    • Organizer
      第129回触媒討論会
    • Related Report
      2021 Research-status Report
  • [Presentation] Correlation between specific surface area and carrier lifetime, and photocatalytic activity of TiO22021

    • Author(s)
      Shimpei Naniwa, Kosaku Kato, Akira Yamakata, Akira Yamamoto, Hisao Yoshida
    • Organizer
      Materials Research Meeting 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Highly improved hydrogen evolution with physically separated Pt cocatalyst and TiO2 photocatalyst2021

    • Author(s)
      Kexin Zou, Shimpei Naniwa, Akira Yamamoto, Hisao Yoshida
    • Organizer
      第40回固体表面光化学討論会
    • Related Report
      2021 Research-status Report
  • [Presentation] Stable and selective non-oxidative coupling of methane over the Pd-Bi dual cocatalyst loaded gallium oxide photocatalyst2021

    • Author(s)
      Surya Pratap Singh, Akira Yamomoto and, Hisao Yoshida
    • Organizer
      第128回 触媒討論会
    • Related Report
      2021 Research-status Report
  • [Presentation] A Pd-Bi dual cocatalyst loaded gallium oxide photocatalyst for selective nonoxidative coupling of methane2021

    • Author(s)
      Surya Pratap Singh, Akira Yamamoto, Hisao Yoshida
    • Organizer
      18th Japan-Korea Symposium on Catalysis (18JKSC)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 光触媒的脱水素型ホモカップリング反応における構造物性活性相関の基質依存性2021

    • Author(s)
      浪花晋平, 山本旭, 吉田寿雄
    • Organizer
      第127回触媒討論会
    • Related Report
      2020 Research-status Report
  • [Presentation] 炭化水素の光触媒的ホモカップリング反応における構造活性相関の定量的研究2020

    • Author(s)
      浪花晋平, 山本旭, 吉田寿雄
    • Organizer
      第126回触媒討論会
    • Related Report
      2020 Research-status Report

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Published: 2020-08-03   Modified: 2024-01-30  

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