采用多种现代表面测试技术 ,结合催化剂活性考评 ,考察了金属氧化物 - HZSN- 5负载型催化剂的活性组分和主要助剂的活性形态 .结果表明 ,氧化物在分子筛表面以非晶型形态存在 ;其分散性较好 ,活性组分的利用率高 ;含 Ce负载型催化剂中存在与工业用乙苯脱氢催化剂相同的活性相 ,含 Cr负载型催化剂中的活性相与前两者不同 ,其脱氢能力较强 A variety of modern surface testing techniques were used in combination with the catalyst activity evaluation to investigate the active species of the metal oxide-HZSN-5 supported catalyst and the main additives. The results show that the oxide forms on the surface of the zeolite in an amorphous form ; The dispersibility is better and the utilization ratio of active components is higher; the same active phase exists in the catalyst containing Ce as the commercial ethylbenzene dehydrogenation catalyst, and the active phase in the catalyst containing Cr is different from the former two , Its ability to dehydrogenation stronger