摘要
ｉＣｕ／ＺｎＯ双金属催化剂催化ＣＯ加氢反应王亚权（天津大学化工学院一碳化工国家重点实验室，天津３０００７２）关键词镍，铜，氧化锌，负载型催化剂，双金属催化剂，一氧化碳，加氢分类号Ｏ６４３一种金属担载在载体上，可以产生多种相互作用，如金属载体强相互...
A series of Ni-Cu/ZnO samples for CO hydrogenation were studied and characterized by TPR, XPS, etc. The results indicate that there is metal-support interaction between Ni and ZnO, or between Cu and ZnO and metal-metal interaction between Ni and Cu. After reduction, Ni-Cu bimetallic clusters formed and Cu enriched on the surface. Supported on ZnO, both Ni and Cu catalyzed the formation of MeOH, while on SiO_2, both catalyzed the formation of alkanes. None of the bimetallic Ni-Cu/ZnO showed the activity of simple combination of Ni/ZnO and Cu/ZnO. The total reaction rate did not increase appreciably with increasing Cu content at constant Ni content, but, decreased drastically when Ni was added at constant Cu content. With the increase of Cu/Ni ratio, the selectivity for MeOH increased, while that for alkanes and EtOH decreased significantly. It was suggested that the metalmetal interaction significantly weakened the metal-support interaction.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
1998年第2期166-168,共3页
关键词
镍
铜
氧化锌
双金属
催化剂
一氧化碳
加氢
Nickel, Copper, Zinc oxide, Supported catalyst, Bimetallic catalyst, Carbon monoxide, Hydrogenation
