Advances in Electrocatalytic Semi-Hydrogenation of Acetylene in Aqueous Electrolyte: Progress, Challenges, and Opportunities  

作　　者：Zihao Yan Libang Xu Huiyuan Zhu 

机构地区：[1]Department of Chemistry,University of Virginia,Charlottesville,Virginia 22904

出　　处：《Renewables》2023年第3期278-293,共16页可再生能源（英文）

基　　金：supported by the US National Science Foundation(grant no.CHE-2102363).

摘　　要：Catalytic hydrogenation is a foundational pillar of the chemical industry.Especially,semi-hydrogenation of acetylene(C_(2)H_(2))to ethylene(C_(2)H_(4))is an important industrial reaction to generate polymer-grade C_(2)H_(4) from crude streams for polyethylene production.The industrial C_(2)H_(2) semi-hydrogenation process is currently dominated by the thermocatalytic route that involves cost-prohibitive Pdbased catalysts,high operation temperature,and excess hydrogen feed.Thermocatalytic semi-hydrogenation of C_(2)H_(2) is also hindered by limited C_(2)H_(4) selectivity due to unwanted over-hydrogenation.Therefore,seeking strategies to improve the catalyst performance while reducing energy consumption and capital expenditure of the current hydrogenation schemes is essential to the petrochemical industry.Fortunately,recent advances in electrocatalytic C_(2)H_(2) semi-hydrogenation systems lead to a sustainable alternative to traditional thermocatalytic systems.Using renewable electricity as an energy source and water as a hydrogen source,electrocatalytic systems can operate under ambient conditions with tunable selectivity toward C_(2)H_(4).In this review,we first discuss the reactor design for electrocatalytic C_(2)H_(2) semi-hydrogenation.We then review the computational studies for understanding and predicting the catalytic behavior ofmetal catalysts.We also summarize advanced electrocatalysts categorized into Cu-based and non-Cu-based materials.Finally,we provide perspectives on the opportunities to overcome existing challenges for future practical application of electrocatalytic C_(2)H_(2) semihydrogenation.

关 键 词：ACETYLENE ETHYLENE ELECTROCATALYSIS SEMIHYDROGENATION 

分 类 号：O64[理学—物理化学]