摘要
The phase and valency state of cobalt species on Co/HZSM 5 catalysts containing 1 0% to 10 0% cobalt were characterized by XRD, TPR and DRS technique. It was found that cobalt species on Co/HZSM 5 may exist in the phases of Co 3O 4, CoO, CoAl 2O 4 spinel, exchanged Co or metal Co at different calcination and reduction temperature, and CoAl 2O 4 spinel is difficult to be reduced.
The phase and valency state of cobalt species on Co/HZSM 5 catalysts containing 1 0% to 10 0% cobalt were characterized by XRD, TPR and DRS technique. It was found that cobalt species on Co/HZSM 5 may exist in the phases of Co 3O 4, CoO, CoAl 2O 4 spinel, exchanged Co or metal Co at different calcination and reduction temperature, and CoAl 2O 4 spinel is difficult to be reduced.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第1期129-131,共3页
Chemical Journal of Chinese Universities
