乙炔选择性加氢催化剂研究进展

乙烯是石化工业中最重要的工业原料之一，然而乙烯产品中少量乙炔杂质的存在会直接影响乙烯的下一步应用。乙炔选择性催化加氢被认为是脱除乙炔杂质最有效的方法之一。本文综述了乙炔选择性加氢催化剂近年来的研究进展，介绍了乙炔选择加氢的反应机理，归纳总结了活性组分、助剂、载体以及结构对乙炔加氢催化剂性能的影响。鉴于Pd基催化剂仍然是工业应用的主流催化剂，文中综述了Pd基催化剂的研究现状和目前存在的一些挑战，同时提出了催化性能优化的建议。最后，就如何进一步提高乙炔选择性加氢催化剂性能的发展趋势进行了归纳，主要从单原子合金催化剂、催化剂微观调控以及电化学炔烃加氢方面进行论述，为未来提高乙炔加氢催化剂的性能提供了指导方向。

Advances in catalysts for selective hydrogenation of acetylene

Ethylene is one of the most important industrial raw materials in petrochemical industry, however, the presence of a small amount of acetylene impurities in ethylene products will directly affect the subsequent application of ethylene. Selective catalytic hydrogenation of acetylene is considered to be one of the most effective methods for removing acetylene impurities. In this paper, the research progress of acetylene selective hydrogenation catalysts in recent years is reviewed, including the reaction mechanism, and the effects of active components, promoters, supports and structures on the catalyst performance. In view of the fact that the Pd-based catalysts are still the mainstream catalysts used in industry, the research status and current challenges of Pd-based catalysts are reviewed, and suggestions for the optimization of catalytic performance are proposed. Finally, the development trends to further improve the catalytic performance of acetylene hydrogenation catalysts are summarized, mainly from the aspects of single-atom alloy catalyst, catalyst micro-control, and electrochemical olefin hydrogenation.