Ethylene is an important feedstock for various industrial processes, particularly in the polymer industry. Unfortunately, during naphtha cracking to produce ethylene, there are instances of acetylene presence in the product stream, which poisons the Ziegler—Natta polymerization catalysts. Thus, appropriate process modification, optimization, and in particular, catalyst design are essential to ensure the production of highly pure ethylene that is suitable as a feedstock in polymerization reactions. Accordingly, carefully selected process parameters and the application of various catalyst systems have been optimized for this purpose. This review provides a holistic view of the recent reports on the selective hydrogenation of acetylene. Previously published reviews were limited to Pd catalysts. However, effective new metal and non-metal catalysts have been explored for selective acetylene hydrogenation. Updates on this recent progress and more comprehensive computational studies that are now available for the reaction are described herein. In addition to the favored Pd catalysts, other catalyst systems including mono, bimetallic, trimetallic, and ionic catalysts are presented. The specific role(s) that each process parameter plays to achieve high acetylene conversion and ethylene selectivity is discussed. Attempts have been made to elucidate the possible catalyst deactivation mechanisms involved in the reaction. Extensive reports suggest that acetylene adsorption occurs through an active single-site mechanism rather than via dual active sites. An increase in the reaction temperature affords high acetylene conversion and ethylene selectivity to obtain reactant streams free of ethylene. Conflicting findings to this trend have reported the presence of ethylene in the feed stream. This review will serve as a useful resource of condensed information for researchers in the field of acetylene-selective hydrogenation.

乙烯是各种工业过程的重要原料，特别是在聚合物工业中。不幸的是，在石脑油裂解生产乙烯的过程中，有时会在产物流中存在乙炔，这会使 Ziegler-Natta 聚合催化剂中毒。因此，适当的工艺改进、优化，特别是催化剂设计对于确保生产适合作为聚合反应原料的高纯度乙烯至关重要。因此，已为此目的优化了精心选择的工艺参数和各种催化剂体系的应用。这篇综述提供了关于乙炔选择性加氢的最新报道的整体观点。以前发表的评论仅限于 Pd 催化剂。然而，已经探索了用于选择性乙炔加氢的有效的新型金属和非金属催化剂。本文描述了该最新进展的更新和现在可用于反应的更全面的计算研究。除了受欢迎的 Pd 催化剂外，还介绍了其他催化剂体系，包括单金属、双金属、三金属和离子催化剂。讨论了每个工艺参数为实现高乙炔转化率和乙烯选择性所起的具体作用。已经尝试阐明参与反应的可能的催化剂失活机制。大量报道表明，乙炔吸附是通过活性单点机制而不是通过双活性位点发生的。反应温度的升高提供了高乙炔转化率和乙烯选择性以获得不含乙烯的反应物流。与这一趋势相矛盾的发现报告了进料流中乙烯的存在。这篇综述将为乙炔选择性加氢领域的研究人员提供有用的浓缩信息资源。