Development of an active site for nitrogen oxide deruction based on the unique local state of isolated noble metals

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K04775
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 27030:Catalyst and resource chemical process-related
• Research Institution: Nagoya University
• Principal Investigator: Sato Katsutoshi 名古屋大学, 工学研究科, 特任准教授 (30586607)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 合金触媒 / 省貴金属化 / 局所構造 / 電子状態

Outline of Final Research Achievements

The objective of this study was to examine the unique structures and properties of isolated noble metal species in non-noble metals and to construct a NOx reduction system that exhibits high activity even in an oxygen-rich atmosphere by using these as catalytic active sites. In particular, we investigated the effect of combining with platinum and examined non-noble metals that promote the activity of platinum and their optimal combinations. Through these investigations, we constructed a novel catalytic system in which a non-noble metal was used in combination with platinum. This system exhibited activity that surpassed benchmark catalysts even under oxygen-rich conditions.

Free Research Field

触媒化学

Academic Significance and Societal Importance of the Research Achievements

貴金属は希少な資源であり、今後ますますの需要増加が見込まれている。特に自動車触媒としての需要が大きく、枯渇に備えた代替策の提示が求められている。本研究では汎用金属と少量の貴金属の複合化に注目し、貴金属の使用量をおさえながら、ベンチマーク貴金属触媒を凌駕する性能の触媒を開発することに成功した。これらの結果は、貴金属の使用量削減と汎用金属の利用に関する新たな指針となることが期待される。