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Development of Environmental Catalysts using Topotactic Transformation

Research Project

Project/Area Number 19H02514
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 Institute of Technology (2021)
Kyoto University (2019-2020)

Principal Investigator

Hosokawa Saburo  京都工芸繊維大学, 材料化学系, 准教授 (90456806)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2021: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2019: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
Keywords環境触媒 / 酸素貯蔵材料 / ペロブスカイト酸化物 / トポタクティック反応 / ペロブスカイト構造
Outline of Research at the Start

環境触媒材料は多くの場合高温反応雰囲気下に曝されることが想定されるため,高い熱的安定性を必要とする.そのため,触媒の表面積に囚われない触媒材料設計が望まれている.そこで,本研究では,熱的に安定なセラミックス材料の構造情報を表面反応に利用することを試み,高い活性と耐熱性を併せ持つ環境触媒材料の創製を目指す.具体的には,遷移金属複合酸化物のトポタクティックな酸素脱離・挿入機構に主眼を置き,新規触媒担体材料の設計を行う.さらに,複合酸化物内部の固体内酸素イオンの挿入・脱離が関わる表面反応の学理を究明する.

Outline of Final Research Achievements

Environmental catalysts are used to remove harmful gases such as hydrocarbons and NOx species emitted from factories and automobiles, and it is desired to improve the catalytic activity owing to the ever-increasing concern over global warming. In addition, high thermal and chemical stability is essential for these materials because they are expected to be exposed to high temperatures and humidification. This study demonstrates an environmental catalyst that efficiently utilizes lattice oxygens and oxygen vacancy sites in perovskite oxides. We found that transition metal-doped SrTiO3 with high chemical stability exhibited excellent performances for NOx removal reactions.

Academic Significance and Societal Importance of the Research Achievements

従来までの環境触媒材料設計では表面構造制御が主に検討されてきたが,本研究では固体内部の構造に主眼を置いて材料設計を試みた.その結果,NOx種を吸蔵させ除去する反応では,貴金属フリー型Mn添加SrTiO3のNOx吸蔵能は既存材料のPt/Ba/Al2O3に匹敵することを見出した.また,NOをN2に還元し除去する反応では,Co添加SrTiO3担持Pd触媒の格子酸素がNO還元に関与しており,本材料は既存材料であるPd/CeO2-ZrO2を凌駕する特性を示した.これらの成果は,貴金属使用量の低減化や代替に寄与するとともに,新しい触媒材料設計の指針になるものと考えている.

Report

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

    (26 results)

All 2022 2021 2020 2019

All Journal Article (11 results) (of which Peer Reviewed: 8 results) Presentation (15 results) (of which Int'l Joint Research: 3 results,  Invited: 7 results)

  • [Journal Article] Oxygen Storage Capacity of Co-Doped SrTiO3 with High Redox Performance2022

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

      The Journal of Physical Chemistry C

      Volume: 126 Issue: 9 Pages: 4415-4422

    • DOI

      10.1021/acs.jpcc.1c10693

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] NOx Storage Performance at Low Temperature over Platinum Group Metal-Free SrTiO3-Based Material2021

    • Author(s)
      Yoshiyama Yuji、Hosokawa Saburo、Tamai Kazuki、Kajino Takanobu、Yoto Hiroaki、Asakura Hiroyuki、Teramura Kentaro、Tanaka Tsunehiro
    • Journal Title

      ACS Applied Materials and Interfaces

      Volume: 13 Issue: 25 Pages: 29482-29490

    • DOI

      10.1021/acsami.1c03465

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [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] Low-temperature NO Oxidation Using Lattice Oxygen in Fe-site Substituted SrFeO3-d2020

    • Author(s)
      K. Tamai, S. Hosokawa, K. Kato, H. Asakura, K. Teramura, T. Tanaka
    • Journal Title

      Phys. Chem. Chem. Phys.

      Volume: 22 Issue: 42 Pages: 24181-24190

    • DOI

      10.1039/d0cp03726e

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Excellent Catalytic Activity of a Pd‐Promoted MnOx Catalyst for Purifying Automotive Exhaust Gases2020

    • Author(s)
      Hosokawa Saburo、Shibano Takuya、Koga Hiroaki、Matsui Masafuyu、Asakura Hiroyuki、Teramura Kentaro、Okumura Mitsutaka、Tanaka Tsunehiro
    • Journal Title

      ChemCatChem

      Volume: 12 Issue: 17 Pages: 4276-4280

    • DOI

      10.1002/cctc.201902385

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] DXAFS法を利用した自動車触媒用酸素貯蔵材料の動的挙動観察2020

    • Author(s)
      細川三郎,別府孝介,加藤和男,田中庸裕
    • Journal Title

      SPring-8/SACLA利用者情報

      Volume: 7 Pages: 6552-6560

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Sr-Fe 系複合酸化物の自動車触媒材料への応用と形態制御2020

    • Author(s)
      細川三郎・別府孝介・玉井和樹・田中庸裕
    • Journal Title

      セラミックス

      Volume: 55 Pages: 399-403

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dynamics of the Lattice Oxygen in a Ruddlesden-Popper-type Sr3Fe2O7-δ Catalyst during NO Oxidation2020

    • Author(s)
      Kazuki Tamai, Saburo Hosokawa, Kenya Onishi, Chikara Watanabe, Kazuo Kato, Hiroyuki Asakura, Kentaro Teramura, Tsunehiro Tanaka
    • Journal Title

      ACS Catal.

      Volume: 10 Pages: 2528-2537

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ペロブスカイト材料を利用した自動車排ガス浄化触媒の開発2019

    • Author(s)
      細川三郎,田中庸裕
    • Journal Title

      触媒

      Volume: 61 Pages: 322-328

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Sr3Fe2O7-dの酸素貯蔵能2019

    • Author(s)
      細川三郎,田中庸裕
    • Journal Title

      熱測定

      Volume: 46 Pages: 118-121

    • Related Report
      2019 Annual Research Report
  • [Journal Article] 新規酸素貯蔵材料を用いた自動車排ガス浄化触媒2019

    • Author(s)
      細川三郎,田中庸裕
    • Journal Title

      ファインケミカル

      Volume: 48 Pages: 19-24

    • Related Report
      2019 Annual Research Report
  • [Presentation] Purification of Automotive Exhaust Gases over Pd/Ca2AlMnO5+δ2021

    • Author(s)
      Saburo Hosokawa, Yudai Oshino, Hiroyuki Asakura, Kentaro Teramura, Tsunehiro Tanaka
    • Organizer
      18th Japan-Korea Symposium on Catalysis
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] トポタクティックな構造変化を利用した触媒材料開発2021

    • Author(s)
      細川三郎
    • Organizer
      ハイブリッド材料シンポジウム
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 遷移金属複合酸化物の結晶構造を活かした環境触媒材料の創製2021

    • Author(s)
      細川三郎
    • Organizer
      触媒学会北海道支部 室蘭地区講演会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] SrTiO3の酸素貯蔵能に対するCo添加効果2021

    • Author(s)
      吉山優志,細川三郎,朝倉博行,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] 異種元素置換型SrTiO3の酸素貯蔵能を利用した自動車触媒材料の開発2021

    • Author(s)
      吉山優志,細川三郎,朝倉博行,寺村謙太郎,田中庸裕
    • Organizer
      第31回キャラクタリゼーション講習会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Sr-Ti系複合酸化物を用いた NOx吸蔵2021

    • Author(s)
      細川三郎,吉山優志,朝倉博行,寺村謙太郎,田中庸裕
    • Organizer
      日本セラミックス協会 2021 年年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Sr3Ti2O7担持貴金属触媒による三元触媒反応2020

    • 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127回触媒討論会
    • Related Report
      2020 Annual Research Report
  • [Presentation] SrTiO3を用いたNOx吸蔵における異種元素置換効果2020

    • Author(s)
      吉山優志,細川三郎,朝倉博行,寺村謙太郎,田中庸裕
    • Organizer
      第126回触媒討論会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 遷移金属複合酸化物を用いた自動車排ガス浄化触媒の設計2019

    • Author(s)
      細川三郎
    • Organizer
      触媒学会・触媒工業協会交流サロン
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Fe系酸素貯蔵材料を用いた自動車排ガス浄化用触媒の開発2019

    • Author(s)
      細川三郎
    • Organizer
      自動車技術協会 排気触媒システム部門委員会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] トポタクティックな構造変化を利用したFe系複合酸化物触媒の開発2019

    • Author(s)
      細川三郎
    • Organizer
      フロンティア材料研究所講演会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 遷移金属複合酸化物を用いた自動車排ガス浄化触媒の設計2019

    • Author(s)
      細川三郎
    • Organizer
      第124回触媒討論会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Development of Automotive Catalyst Using Perovskite-related Oxide2019

    • Author(s)
      Saburo Hosokawa
    • Organizer
      JK-Ceramics 36
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Development of Pd Catalyst Supported on Sr-Ti Mixed Oxide for Purifying Automotive Exhaust Gases2019

    • Author(s)
      C. Watanabe, S. Hosokawa, H. Asakura, K. Teramura, T. Tanaka
    • Organizer
      MRM2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Sr-Ti系複合酸化物担持Pd触媒による三元触媒反応2019

    • Author(s)
      渡邉力,出水章登,細川三郎,朝倉博行,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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