用于水煤气变换反应的贵金属基单原子催化剂。
Noble-metal based single-atom catalysts for the water-gas shift reaction.
作者信息
Chen Yang, Lin Jian, Wang Xiaodong
机构信息
CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China.
Institute of Clean Energy Chemistry, Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials of Liaoning Province, College of Chemistry, Liaoning University, Shenyang 110036, P. R. China.
出版信息
Chem Commun (Camb). 2021 Dec 23;58(2):208-222. doi: 10.1039/d1cc04051k.
Single-atom catalysts (SACs) have attracted great attention in heterogeneous catalysis. In this Feature Article, we summarize the recent advances of typical Au and Pt-group-metal (PGM) based SACs and their applications in the water-gas shift (WGS) reaction in the past two decades. First, oxide and carbide supported single atoms are categorized. Then, the active sites in the WGS reaction are identified and discussed, with SACs as the positive state or metallic state. After that, the reaction mechanisms of the WGS are presented, which are classified into two categories of redox mechanism and associative mechanism. Finally, the challenges and opportunities in this emerging field for the collection of hydrogen are proposed on the basis of current developments. It is believed that more and more exciting findings based on SACs are forthcoming.
单原子催化剂（SACs）在多相催化领域备受关注。在这篇专题文章中，我们总结了近二十年来典型的基于金和铂族金属（PGM）的单原子催化剂及其在水煤气变换（WGS）反应中的应用进展。首先，对氧化物和碳化物负载的单原子进行了分类。然后，确定并讨论了水煤气变换反应中的活性位点，其中单原子催化剂呈正价态或金属态。在此之后，介绍了水煤气变换反应的机理，分为氧化还原机理和缔合机理两类。最后，基于当前的发展情况，提出了这一新兴领域在氢气收集方面面临的挑战和机遇。相信基于单原子催化剂会有越来越多令人兴奋的发现。
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