乙苯脱氢催化剂的开发

Development of Catalysts for Ethylbenzene Dehydrogenation

ＸＨ系列催化剂主要用于乙苯脱氢制苯乙烯。该系列催化剂用氧化铁为主要活性组份，以钾和铈为主要助催化剂，并含有其它添加剂，至今已有五种牌号相继投放市场。针对ＸＨ系列催化剂开展了基础性研究，探讨催化剂的活性相、助剂的作用及晶格氧参与脱氢反应的机理。

he XHseries catalysts are mainly used for the dehydrogenation of ethylbenzene to styreneUp to now,there are five industrial catalysts named after XHThe main active component of the XHseries catalysts is iron oxide,and potassium and cerium oxides are the main promotorsIt can be shown by investigating the interaction between potassium promotor and iron oxide,and the relationship between catalytic activity and potassium amount carried on the surface of a model catalyst,that KFeO2 might be the active phase of these catalystsThe nature of Ce promotion is suggested as a donor of lattice oxygen to the KFeO2 active phase