乙苯脱氢催化剂的开发

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。

Development of Catalysts for Ethylbenzene Dehydrogenation

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