Development of oxidation catalyst using precious group metal species as promoter

2018 Fiscal Year Final Research Report

• Project/Area Number: 16H04567
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Catalyst/Resource chemical process
• Research Institution: Kyoto University
• Principal Investigator: Tanaka Tsunehiro 京都大学, 工学研究科, 教授 (70201621)
• Research Collaborator: Hosokawa Saburo ; Teramura Kentaro
• Project Period (FY): 2016-04-01 – 2019-03-31
• Keywords: 燃焼触媒 / 自動車触媒 / 貴金属触媒 / 遷移金属触媒

Outline of Final Research Achievements

Catalytic combustion method is effective for the removal of volatile organic compounds (VOCs) emitted from automobile or various industrial processes, and the development of novel catalyst material having a high activity at low temperature range is highly desired. This research demonstrates that the catalytic function of transition metal-based mixed oxide is dramatically amplified by adding a trace amount of precious group metal (PGM) species. For CO and C3H6 combustion, catalytic activity of Mn-based catalyst are enhanced by PGM loading. A small amount of PGM species adequately promotes the adsorption of CO or C3H6, resulting in the improvement of catalytic activity of Mn-based catalyst. These results suggest that the development of transition metal-based catalyst having high catalytic activity leads to reduce PGM usage.

Free Research Field

触媒化学

Academic Significance and Societal Importance of the Research Achievements

本研究課題では，少量の貴金属元素が遷移金属元素の触媒能を促進するという新規な発想に基づき，貴金属元素をプロモーターとした超高活性燃焼用触媒の開発を目指した．従来まで，貴金属系の触媒の活性点は貴金属サイトであるという固定概念があったが，本研究では遷移金属が活性サイトであり，その機能をアシストするために貴金属を導入するという視点で触媒設計を行った．その結果，触媒活性が非常に高い材料を設計することに成功した．このような触媒設計指針は触媒活性の向上を生むだけでなく，貴金属元素の使用量の低減化も見込めるため，経済的・社会的観点からも意義深い成果であると考えている．