Acta Chimica Sinica ›› 2009, Vol. 67 ›› Issue (23): 2739-2744. Previous Articles     Next Articles

Full Papers

Cu/SiO2催化剂制备方法对其草酸二甲酯催化氢解性能的影响

陈梁锋,朱 渊,刘晓钰,裴 燕,乔明华,沈 伟,徐华龙*,范康年   

  1. (复旦大学化学系 分子催化和功能材料重点实验室 上海 200433)
  • 投稿日期:2008-12-15 修回日期:2009-04-29 发布日期:2009-08-10
  • 通讯作者: 乔明华 E-mail:mhqiao@fudan.edu.cn
  • 基金资助:

    “973”国家重点基础研究发展规划资助项目(2006CB202502),国家自然科学基金资助项目(20673025,20803011)霍英东教育基金会资助项目(104022)和上海市科委资助项目(06JC14009,07ZR14007)

Cu/SiO2 Catalysts Prepared by Different Methods for Hydrogenolysis of Dimethyl Oxalate to Ethylene Glycol

Chen, Liangfeng,Zhu, Yuan,Liu, Xiaoyu,Pei, Yan,Qiao, Minghua* Shen, Wei,Xu, Hualong*,Fan, Kangnian   

  1. (Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433)
  • Received:2008-12-15 Revised:2009-04-29 Published:2009-08-10

Cu/SiO2 catalysts have been prepared by the chemisorption-hydrolysis (CH), ammonia evaporation (AE) and wetness impregnation (WI) methods, and evaluated in gas phase hydrogenolysis of dimethyl oxalate (DMO) to ethylene glycol (EG). The Cu/SiO2 catalyst prepared by the CH method showed the highest hydrogenolysis activity and selectivity to EG, giving an EG yield of 92.6%. Characterizations disclosed that Cu species were poorly dispersed on the catalyst prepared by the WI method, which accounts for its poor activity. CH and AE methods could well disperse Cu species, but the CH method resulted in higher Cu0 surface area and comparable Cu+ surface area as compared to the AE method. As a result, the Cu/SiO2 catalyst prepared by the CH method exhibits the higher hydrogenolysis activity than that by the AE method.

Key words: Cu/SiO2, preparation method, dimethyl oxalate, hydrogenation, ethylene glycol