Design of cooperative active sites via bottom-up alloy synthesis

2021 Fiscal Year Final Research Report

• Project/Area Number: 20K22467
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 0401:Materials engineering, chemical engineering, and related fields
• 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): 2020-09-11 – 2022-03-31
• Keywords: 担持金属触媒 / 水素化 / 金属酸化物クラスタ― / 塩基触媒 / 協奏触媒機能

Outline of Final Research Achievements

This work provides a bottom-up design of the composite catalyst that the surface of supported Au nanoparticles was modified with anionic metal oxide clusters by a simple adsorption method. The composite catalysts were successfully synthesized by mixing the aluminum-supported gold nanoparticle catalyst in an aqueous solution of niobium and tantalum oxide clusters. We found that the composite catalyst efficiently drove the hydrogenation of aromatic nitro compounds by the dual functional catalysis having both base of metal oxide clusters and reduction abilities of gold nanoparticles.

Free Research Field

触媒化学

Academic Significance and Societal Importance of the Research Achievements

触媒的水素化を駆動する担持金属触媒において，金属表面に酸化物シェルを修飾したコア－シェル型の複合型触媒が有効であるが，担持金属ナノ粒子の表面設計手法は限られており，汎用性の高い手法の開発が求められる．本研究で提案したボトムアップ型の複合触媒設計手法は，担持Auナノ粒子の表面に金属酸化物クラスタ―を修飾することが出来，高密度な金属－酸化物界面の設計と高効率な水素化能を達成した．得られた知見は，担持金属触媒の高機能化に新たな選択肢を与えるものである．