Co/HZSM-5催化剂中Co的相态和价态表征及其与一步法合成苯乙烯活性之间的关系

Relation Between the Phase and Valency State of Co on Co/HZSM5 Catalyst and Its Reaction Activity on Direct Synthesis of Styrene

Ｃｏ／ＨＺＳＭ┐５催化剂中Ｃｏ的相态和价态表征及其与一步法合成苯乙烯活性之间的关系张强＊金日光（北京化工大学材料科学与工程学院北京１０００２９）关键词Ｃｏ／ＨＺＳＭ－５催化剂，相态，价态，苯乙烯合成１９９７－０３－３１收稿，１９９７－０７－１８修回中...

The Co species in Co/HZSM5 appeared to be in the phase of Co3O4, CoO, CoAl2O4 spinel, exchanged Co species and metal Co, depending on the calcination and reduction temperature. Co species in the phase of Co3O4, CoO and exchanged Co were the active sites on styrene formation, but in the formation of styrene over metal Co phase the crystal plane of the catalyst plays an important role.