Highly Active and Durable Automotive Catalyst Prepared by Using Hybrid Clustering

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K14463
• 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: National Museum of Nature and Science, Tokyo
• Principal Investigator: Hayashi Shun 独立行政法人国立科学博物館, 理工学研究部, 研究員 (80869446)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 触媒 / クラスター / ナノ材料 / 自動車触媒

Outline of Final Research Achievements

Automotive catalysts, which remove major pollutants from exhaust emissions, play an important role in automotive pollution control. Since large amounts of platinum group metal elements are frequently used as a key component, the development of catalysts with high durability is required. In this study, we proposed a catalyst preparation method, namely hybrid clustering, for the efficient mixing of active elements. It was found that the durability of the catalyst prepared by hybrid clustering was dramatically improved compared to the typical catalyst. The origin of high durability was explained by the difference of reaction mechanisms.

Free Research Field

触媒化学

Academic Significance and Societal Importance of the Research Achievements

電気自動車の普及が進むものの、新興国を中心とした自動車需要の増加や排ガス規制の強化により、自動車排ガス浄化触媒の耐久性向上は引き続き重要な課題である。自動車排ガス浄化触媒の開発は一般に構成元素の試行錯誤的な検討によって行われており、触媒調製法の工夫はほとんど注目されていなかった。構成元素を最適化し本手法によって触媒を調製することで、さらなる高耐久化が期待される。また、本手法は自動車排ガス浄化触媒に限らず、他の触媒の高機能化に応用可能である。