催化学报

催化学报 ›› 2007, Vol. 28 ›› Issue (8): 676-680.

• 研究论文 • 上一篇    下一篇

单层分散型Pd/Ni双金属催化剂的制备及其催化加氢性能

王松蕊1,朱月香1,谢有畅1,陈经广2   

  1. 1 北京大学化学与分子工程学院分子动态与稳态国家重点实验室, 北京分子科学国家实验室, 北京 100871; 2 特拉华大学化学工程系催化科学与技术中心, 纽瓦克, 特拉华州 19716, 美国
  • 收稿日期:2007-08-25 出版日期:2007-08-25 发布日期:2011-08-19

Preparation and Catalytic Performance of Monolayer-Dispersed Pd/Ni Bimetallic Catalysts for Hydrogenation

WANG Songrui1, ZHU Yuexiang1*, XIE Youchang1, Jingguang G. CHEN2   

  1. 1 Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China; 2 Department of Chemical Engineering, Center for Catalytic Science and Technology (CCST), University of Delaware, Newark, DE 19716, USA
  • Received:2007-08-25 Online:2007-08-25 Published:2011-08-19

PDF

1124

被引次数

43

摘要： Science and Technology (CCST), University of Delaware, Newark, DE 19716, USA 通过置换反应制备了Pd/Ni双金属催化剂,利用X射线衍射、CO化学吸附和吸附H2的程序升温脱附对其进行了表征,并测定了该催化剂对环己烯、苯乙烯和丙酮气相加氢反应的催化性能. 结果发现,在这种催化剂中Pd原子单层分散在金属Ni的表面,因而该催化剂表现出比浸渍法制备的相同Pd含量的Pd/Ni-im和Pd/γ-Al2O3催化剂更高的催化加氢活性.

关键词: 钯, 镍, 单层分散, 双金属催化剂, 置换反应, 加氢反应

Abstract: The Pd/Ni bimetallic catalyst was prepared by replacement reactions, characterized byX-raydiffraction, CO chemisorption, and H2 temperature-programmed desorption, and evaluated for the hydrogenation of cyclohexene, styrene, and acetone. The results show that Pd atoms are monolayer-dispersed on the Ni surface in this Pd/Ni catalyst. Consequently, the Pd/Ni catalyst is much more active than Pd/Ni and Pd/γ-Al2O3 with the same Pd loading prepared by the conventional impregnation method.

Key words: palladium, nickel, monolayer dispersion, bimetallic catalyst, replacement reaction, hydrogenation