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Operando study for supported metal three-way catalysts design

Research Project

Project/Area Number 19H02515
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 27030:Catalyst and resource chemical process-related
Research InstitutionKyoto University

Principal Investigator

Tanaka Tsunehiro  京都大学, 工学研究科, 教授 (70201621)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2021: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2019: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
KeywordsOperando / XAFS / 自動車排ガス浄化触媒 / 三元触媒 / 酸素貯蔵材料 / 酸素吸蔵材料 / 触媒 / 固固界面 / スピネル
Outline of Research at the Start

近年,貴金属元素を利用しない自動車排ガス浄化触媒が提案されている.これらはいずれも金属酸化物そのものが触媒活性を示すと考えられている.これに対し,極微量の貴金属種が高分散な金属成分として作用していたり,3d遷移金属元素が触媒反応中に容易に金属成分として再活性化を起こしたりする触媒を見いだしている.本研究では,自動車排ガス浄化用触媒を具体的な対象として.担持金属種および担持金属酸化物種と金属酸化物担体の相互作用と触媒作用の関係を明らかにする.

Outline of Final Research Achievements

In this study, various types of three-way catalysts such as conventional Pd catalysts with and without oxygen storage materials, multi elements non-precious metal catalysts and rare metal free oxygen storage materials were fabricated and analyzed by operando X-ray absorption spectroscopy in order to obtain an insight into development of highly active and robust catalysts.
As a result, real time observation on the dynamic behavior of Pd species supported onto oxygen storage material and development of precious metal free three-way catalyst and oxygen storage materials.

Academic Significance and Societal Importance of the Research Achievements

自動車生産量の増加および排ガス規制強化により,Rh, Pd, Ptの年間需要量の約半分以上が自動車排ガス浄化触媒の製造に用いられている.電気自動車の発展が著しいものの,内燃機関型の自動車は2050年における自動車生産量の半分以上を占めると推計されている.よって,貴金属元素使用量の低減あるいは貴金属からの脱却は喫緊の課題である.本研究では,自動車排ガス浄化触媒の活性金属種が触媒反応を起こしている際の動きが酸素貯蔵材料にどの様に影響されるかの直接観察,一定の条件で貴金属触媒に近い触媒活性を示す多元系卑金属触媒および希少金属フリーの酸素貯蔵材料の開発に成功し,新規触媒の設計指針を得ることができた.

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (15 results)

All 2022 2021 2020 2019

All Journal Article (5 results) (of which Peer Reviewed: 3 results) Presentation (10 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Journal Article] Strong Metal-Support Interaction in Pd/Ca<sub>2</sub>AlMnO<sub>5+δ</sub>: Catalytic NO Reduction over Mn-Doped CaO Shell2021

    • Author(s)
      Hosokawa Saburo、Oshino Yudai、Tanabe Toyokazu、Koga Hiroaki、Beppu Kosuke、Asakura Hiroyuki、Teramura Kentaro、Motohashi Teruki、Okumura Mitsutaka、Tanaka Tsunehiro
    • Journal Title

      ACS Catalysis

      Volume: 11 Issue: 13 Pages: 7996-8003

    • DOI

      10.1021/acscatal.1c01559

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Oxygen Release and Storage Property of Fe-Al Spinel Compounds: A Three-Way Catalytic Reaction over a Supported Rh Catalyst2021

    • Author(s)
      Fujita Kyoko、Asakura Hiroyuki、Hosokawa Saburo、Teramura Kentaro、Kobayashi Masaki、Fujita Koji、Tanaka Tsunehiro
    • Journal Title

      ACS Applied Materials &amp; Interfaces

      Volume: 13 Issue: 21 Pages: 24615-24623

    • DOI

      10.1021/acsami.1c01486

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Real-time observation of the effect of oxygen storage materials on Pd-based three-way catalysts under ideal automobile exhaust conditions: an <i>operando</i> study2021

    • Author(s)
      Asakura Hiroyuki、Hosokawa Saburo、Beppu Kosuke、Tamai Kazuki、Ohyama Junya、Shishido Tetsuya、Kato Kazuo、Teramura Kentaro、Tanaka Tsunehiro
    • Journal Title

      Catalysis Science &amp; Technology

      Volume: 11 Issue: 18 Pages: 6182-6190

    • DOI

      10.1039/d1cy00460c

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Self-Regeneration Process of Ni?Cu Alloy Catalysts during a Three-Way Catalytic Reaction?An Operando Study2020

    • Author(s)
      Asakura Hiroyuki、Onuki Tetsuo、Hosokawa Saburo、Teramura Kentaro、Tanaka Tsunehiro
    • Journal Title

      ACS Applied Materials & Interfaces

      Volume: 12 Issue: 50 Pages: 55994-56003

    • DOI

      10.1021/acsami.0c17256

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Fe-Modified CuNi Alloy Catalyst as a Nonprecious Metal Catalyst for Three-Way Catalysis2020

    • Author(s)
      Asakura Hiroyuki、Kirihara Maho、Fujita Kyoko、Hosokawa Saburo、Kikkawa Soichi、Teramura Kentaro、Tanaka Tsunehiro
    • Journal Title

      Industrial & Engineering Chemistry Research

      Volume: 59 Issue: 45 Pages: 19907-19917

    • DOI

      10.1021/acs.iecr.0c03389

    • Related Report
      2020 Annual Research Report
  • [Presentation] Mg, FeドープAl2O3の酸素貯蔵能と熱耐久性2022

    • Author(s)
      小山田光燿, 朝倉博行, 寺村謙太郎, 田中庸裕
    • Organizer
      第129回触媒討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Excellent Catalytic Activity of a Pd-promoted MnOx Three Way Catalyst2021

    • Author(s)
      田中庸裕
    • Organizer
      18JKSC
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] FeNbO4の酸素貯蔵能に対するTi添加効果2021

    • Author(s)
      吉山優志,出島綾乃,細川三郎,朝倉博行,寺村謙太郎,田中庸裕
    • Organizer
      第128回触媒討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 高い耐熱性をもつSr-Ti系複合酸化物担持Pd触媒による三元触媒反応2021

    • Author(s)
      新開洸世, 細川三郎, 朝倉 博行, 寺村謙太郎, 田中庸裕
    • Organizer
      第128回触媒討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Fe添加アルミナの酸素貯蔵能と熱耐久性2021

    • Author(s)
      寺坂和真,朝倉博行,細川三郎,寺村謙太郎,田中庸裕
    • Organizer
      第128回触媒討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] スピネル型 Feドープアルミナの酸素貯蔵能と熱安定性2021

    • Author(s)
      朝倉博行,小山田光燿,藤田京子, 細川三郎,寺村謙太郎,田中庸裕
    • Organizer
      第128回触媒討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Fe-doped Al2O3の酸素貯蔵能と熱安定性(口頭)2021

    • Author(s)
      朝倉博行,寺坂和真,細川三郎, 寺村謙太郎,田中庸裕
    • Organizer
      日本セラミックス協会第34回秋季シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] Oxygen Storage Property of Fe?Al Spinel Compounds: Three-Way Catalytic Reaction over Supported Rh Catalyst2021

    • Author(s)
      Hiroyuki Asakura, Kyoko Fujita, Saburo Hosokawa, Kentaro Teramura,Masaki Kobayashi, Koji Fujita, Tsunehiro Tanaka
    • Organizer
      MRM2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 易還元性卑金属合金触媒による三元触媒反応2019

    • Author(s)
      切原麻帆,朝倉博行,細川三郎,寺村謙太郎,田中庸裕
    • Organizer
      第124回触媒討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Rh-Fe/Al2O3触媒中のRh-Feの酸化還元挙動と三元触媒活性の検討2019

    • Author(s)
      藤田京子,朝倉博行,細川三郎,寺村謙太郎,田中庸裕
    • Organizer
      第124回触媒討論会
    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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