Single‐atom Automobile Exhaust Catalysts,ChemNanoMat

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Single‐atom Automobile Exhaust Catalysts
ChemNanoMat ( IF 2.6 ) Pub Date : 2020-09-01 , DOI: 10.1002/cnma.202000407
Yubing Lu ₁ , Zihao Zhang ₂ , Fan Lin ₂ , Huamin Wang ₃ , Yong Wang ₂

Affiliation

Single‐atom catalysts (SACs) with isolated metal centers are attracting great research interest because of their maximized metal utilization rates and unique structures. In the last decade, significant efforts have been made to design highly efficient and cost‐effective SACs with applications in automobile exhaust aftertreatment. SACs have not only demonstrated their high potential for improving the catalytic performance of current automobile exhaust catalysts but also provided an ideal platform for understanding the origins of catalyst reactivity. In this review, we summarize the general strategies for promoting the reactivity of metal SACs while maintaining their thermal stability during exhaust‐abatement‐related reactions. Highlights are provided on well‐performed SACs for CO oxidation, unburnt hydrocarbon (HC) oxidation, and the selective catalytic reduction of NO_x. The reaction mechanism and structure‐performance relationship of SAC during these reactions are also discussed. Finally, perspectives are given on the trending research fields for designing more efficient single‐atom automobile exhaust catalysts in the future.

中文翻译：

单原子汽车尾气催化剂

具有孤立金属中心的单原子催化剂（SAC）由于其最大的金属利用率和独特的结构而引起了极大的研究兴趣。在过去的十年中，为在汽车尾气后处理中的应用设计高效，经济高效的SAC做出了巨大的努力。SAC不仅展示了其在改善当前汽车排气催化剂催化性能方面的巨大潜力，而且为了解催化剂反应性的起源提供了理想的平台。在这篇综述中，我们总结了在减少废气相关反应过程中保持金属热稳定性的同时提高金属SAC反应性的一般策略。在性能良好的SAC上重点介绍了CO氧化，未燃碳氢化合物（HC）氧化，_X。还讨论了SAC在这些反应过程中的反应机理和结构-性能关系。最后，就未来设计更有效的单原子汽车尾气催化剂的趋势研究领域给出了观点。

更新日期：2020-09-01

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