Development of solid base catalysis based on local structure control of metal oxide clusters

2023 Fiscal Year Final Research Report

• Project/Area Number: 22K14543
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 27030:Catalyst and resource chemical process-related
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: Kikkawa Soichi 東京都立大学, 理学研究科, 助教 (80878322)
• Project Period (FY): 2022-04-01 – 2024-03-31
• Keywords: 金属酸化物クラスター / 担持金属ナノ粒子 / 塩基触媒

Outline of Final Research Achievements

In this study, we attempted to control the modification density and local structure of metal oxide clusters on supported metal nanoparticles by changing the metal species, size, and shape of the metal nanoparticle and metal oxide clusters, and to actively design the hydrogen activation ability of the metal nanoparticle surface and the base catalytic activity point of the metal oxide clusters. The composites of supported metal nanoparticles and metal oxide clusters efficiently acted to drive the reductive fixation of CO2 and synthesis of imines by oxidative coupling of amines and alcohols. Thus, we succesfully developed the cooperative active sites of redox and base catalysis.

Free Research Field

触媒化学

Academic Significance and Societal Importance of the Research Achievements

担持金属ナノ粒子は工業的に広く用いられており，省金属化の観点から反応に有効な触媒活性サイトの高密度設計が課題である．本研究では，種々の担持金属ナノ粒子の表面に塩基性の金属酸化物クラスタ―を簡便な吸着法により修飾し，金属ナノ粒子表面への高密度な金属－酸化物界面の設計と高効率な触媒反応特性を達成した．得られた知見は，本手法を種々の担持金属触媒へと適用する際の材料設計指針となるものであり，その材料適用性や触媒反応への有用性から本材料群が今後の触媒化学の発展に貢献できると考えている．