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Designing the reactivity of lattice oxygen by precisely controlling the lattice planes and strain

Research Project

Project/Area Number 20H02824
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 36010:Inorganic compounds and inorganic materials chemistry-related
Research InstitutionKyushu University

Principal Investigator

Hojo Hajime  九州大学, 総合理工学研究院, 准教授 (90611369)

Co-Investigator(Kenkyū-buntansha) 永長 久寛  九州大学, 総合理工学研究院, 教授 (90356593)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2022: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2021: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2020: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
Keywords酸化セリウム / 還元過程 / 透過電子顕微鏡 / 電子エネルギー損失分光 / エピタキシャル薄膜 / 酸素空孔 / 格子歪み / 形態制御型ナノ粒子 / エピタキシャル歪み
Outline of Research at the Start

金属酸化物はそれ自身、またはそれに貴金属等を担持したものが様々な触媒材料として用いられている。これらの酸化物における触媒活性は、その格子酸素の反応性に大きく左右される。そのため、格子酸素の反応性を制御するための指針を得ることは、学術的な観点からだけでなく応用的な観点からも重要な課題である。本研究では、酸化セリウム(CeO2)を基盤材料として、高い反応性の格子酸素を実現するための材料設計指針を確立することを目的とする。

Outline of Final Research Achievements

In this project, we have fabricated shape-controlled CeO2 nanoparticles and systematically studied the distribution of surface oxygen vacancies on {100} and {111} surfaces using scanning transmission electron microscopy and electron energy-loss spectroscopy, and the responses to H2 reduction treatments. It is successfully demonstrated that both catalytic activities and the ability to form oxygen vacancies are strongly dependent on the type of lattice planes. Moreover, the present results provide important insights into the reduction mechanism for CeO2, in which bulk oxygen instead of the widely believed surface capping oxygen makes no small contribution to the initial reduction step.

Academic Significance and Societal Importance of the Research Achievements

CeO2は酸素の出入りがしやすい特徴を生かし、種々の触媒材料として用いられている。そのためCeO2の触媒特性を理解するためには、その還元過程を明らかにすることが重要である。本研究で得られた成果は、CeO2の還元過程について新しい知見を与えるものであり、CeO2の触媒特性を理解するための更なる基礎的な研究を促進するだけでなく、CeO2をベースとした高機能な触媒を実現するための重要な足がかりとなることが期待できる。

Report

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

    (25 results)

All 2023 2022 2021 2020 Other

All Journal Article (9 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 8 results,  Open Access: 2 results) Presentation (15 results) (of which Int'l Joint Research: 3 results) Remarks (1 results)

  • [Journal Article] Reduction Mechanism for CeO2 Revealed by Direct Observation of the Oxygen Vacancy Distribution in Shape-Controlled CeO22023

    • Author(s)
      Hajime Hojo, Kazuki Hirota, So Ito, Hisahiro Einaga
    • Journal Title

      Advanced Materials Interfaces

      Volume: 10 Issue: 6 Pages: 2201954-2201954

    • DOI

      10.1002/admi.202201954

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Catalytic properties of LaNiO3 and Mn-modified LaNiO3 catalysts for oxidation of CO and benzene2023

    • Author(s)
      Hajime Hojo, Yuka Inohara, Ryo Ichitsubo, Hisahiro Einaga
    • Journal Title

      Catalysis Today

      Volume: 410 Pages: 127-134

    • DOI

      10.1016/j.cattod.2022.07.002

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Insights into the Hydrogenolysis Mechanism of Diphenyl Ether over Cl-Modified Pt/γ-Al2O3 Catalysts by Experimental and Theoretical Studies2022

    • Author(s)
      Chen Zhu, Hajime Hojo, Hisahiro Einaga
    • Journal Title

      ACS Sustainable Chemistry & Engineering

      Volume: 10 Issue: 27 Pages: 8897-8907

    • DOI

      10.1021/acssuschemeng.2c02038

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Catalytic Oxidation of CO to CO2 over CeO2-Supported Pd-Cu Catalysts under Dilute O2 Conditions2022

    • Author(s)
      Saki Shigenobu, Hajime Hojo, Hisahiro Einaga
    • Journal Title

      Industrial & Engineering Chemistry Research

      Volume: 61 Pages: 15856-15865

    • DOI

      10.1021/acs.iecr.2c02199

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Atomic and Electronic Structure of Pt/TiO2 Catalysts and Their Relationship to Catalytic Activity2022

    • Author(s)
      Hajime Hojo, Miki Gondo, Satoru Yoshizaki, Hisahiro Einaga
    • Journal Title

      Nano Letters

      Volume: 22 Issue: 1 Pages: 145-150

    • DOI

      10.1021/acs.nanolett.1c03485

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fabrication and characterization of La-added MgFe2O4 as catalyst support for CO oxidation2021

    • Author(s)
      Akane Doi, Kenji Obata, Shigenori Matsushima, Hajime Hojo, Hisahiro Einaga
    • Journal Title

      Ceramics International

      Volume: 47 Issue: 23 Pages: 32786-32793

    • DOI

      10.1016/j.ceramint.2021.08.175

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Controlling Diphenyl Ether Hydrogenolysis Selectivity by Tuning the Pt Support and H-Donors under Mild Conditions2021

    • Author(s)
      Chen Zhu, Siyu Ding, Hajime Hojo, Hisahiro Einaga
    • Journal Title

      ACS Catalysis

      Volume: 11 Issue: 20 Pages: 12661-12672

    • DOI

      10.1021/acscatal.1c03999

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Catalyst design of Pt/TiO2 microsphere for benzene oxidation under microwave irradiation2020

    • Author(s)
      Xin Liu, Siyu Ding, Saki Shigenobu, Hajime Hojo, Hisahiro Einaga
    • Journal Title

      Catalysis Today

      Volume: - Pages: 285-291

    • DOI

      10.1016/j.cattod.2020.05.021

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Photocatalytic oxidation process for treatment of gas phase benzene using Ti3+ self-doped TiO2 microsphere with sea urchin-like structure2020

    • Author(s)
      X. Liu. Ya Zhang, S. Matsushima, H. Hojo, H. Einaga
    • Journal Title

      Chem. Eng. J.

      Volume: 402 Pages: 126220-126220

    • DOI

      10.1016/j.cej.2020.126220

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Ptを担持した形態制御CeO2ナノ粒子における酸素空孔分布の直接観察2023

    • Author(s)
      川本裕太、北條元、永長久寛
    • Organizer
      第61回セラミックス基礎科学討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 酸化セリウム薄膜へのエピタキシャル歪みの導入とその原子構造・電子状態解析2023

    • Author(s)
      日高州平、北條元、永長久寛
    • Organizer
      第61回セラミックス基礎科学討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] LaCoO3エピタキシャル薄膜の作製とそのCO酸化特性2023

    • Author(s)
      安達 翔一、北條 元、永長 久寛
    • Organizer
      強的秩序とその操作に関わる 第16回 講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Pt/CeO2モデル触媒における金属担体相互作用のナノ粒子サイズと結晶面依存性2022

    • Author(s)
      藤井和史、北條元、永長久寛
    • Organizer
      第130回触媒討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] The effect of SO2 on the catalytic properties of Pd/CeO22022

    • Author(s)
      Saki Shigenobu, Hajime Hojo, Hisahiro Einaga
    • Organizer
      The 9th Tokyo Conference on Advanced Catalytic Science and Technology (TOCAT-9)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Pd/BaCO3/Al2O3の触媒特性と硫黄被毒挙動に関する検討2022

    • Author(s)
      重信咲季、北條元、杉山武晴、永長久寛
    • Organizer
      第130回触媒討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ペロブスカイト型Ni 酸化物の微構造と触媒特性2021

    • Author(s)
      園田 瑞歩、猪原 由香、北條 元、永長 久寛
    • 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] 形態制御した酸化セリウムナノ粒子表面における酸素空孔量の定量化と異種元素の置換効果2021

    • Author(s)
      伊藤 蒼、廣田 利輝、北 條 元、永長 久寛
    • 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] Pd/CeO2への SO2吸着挙動に関する検討2021

    • Author(s)
      重信咲季,北條元,永長久寛
    • Organizer
      第128回触媒討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] The Effect of SO2 on the Local Structure of Pd/CeO22021

    • Author(s)
      Saki Shigenobu, Hajime Hojo, Hisahiro Einaga
    • Organizer
      The 23rd Cross Straits Symposium on Energy and Environmental Science and Technology
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of SO2 on the Catalytic Properties of Pd/Al2O32021

    • Author(s)
      Saki Shigenobu, Hajime Hojo, Hisahiro Einaga
    • Organizer
      Materials Research Meeting 2021 (MRM2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] La-Ni系ペロブスカイト型酸化物の触媒特性向上に関する研究2021

    • Author(s)
      猪原由香、北條元、永長久寛
    • Organizer
      第59回セラミックス基礎科学討論会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 酸化セリウム薄膜への格子歪み導入とその原子構造・電子状態解析2020

    • Author(s)
      相戸康志、北條元、永長久寛
    • Organizer
      第126回触媒討論会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Pd担持CeO2の触媒特性・耐硫黄被毒特性の向上2020

    • Author(s)
      重信咲季、北條元、永長久寛
    • Organizer
      第126回触媒討論会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 表面サイトへの異種金属添加によるLaMnO3触媒特性の制御2020

    • Author(s)
      桑原孝輔、北條元、永長久寛
    • Organizer
      第126回触媒討論会
    • Related Report
      2020 Annual Research Report
  • [Remarks] 九州大学 大学院総合理工学府 永長・北條研究室

    • URL

      https://einaga-lab.weebly.com

    • Related Report
      2022 Annual Research Report 2020 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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