Ethylene is one of the most important raw materials in the modem petrochemical industry.The preparation of ethylene by steam cracking of petroleum hydrocarbons generates acetylene with a volume fraction about 0.3％to 3％.These trace amounts of acetylene can poison the catalyst of the ethylene polymerization reaction.Selective catalytic hydrogenation of acetylene is considered to be one of the most effective methods for removing acetylene impurities.This paper reviews the research progress of acetylene selective hydrogenation in recent years,introduces the reaction mechanism of acetylene hydrogenation,and summarizes the effects of catalyst active components,additives and carriers on the performance of acetylene selective hydrogenation.The development trend of how to further improve the performance of acetylene selective hydrogenation is discussed from the perspectives of electrocatalysis,photocatalysis and photothermal catalysis.Finally,some suggestions are proposed for the subsequent research on the selective hydrogenation of acetylene.
关键词
乙炔选择性加氢/催化剂/热催化/电催化/光催化/光热催化
Key words
selective hydrogenation of acetylene/catalyst/thermal catalysis/electrocatalysis/photocatalysis/photothermal catalysis
维普
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