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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
引用本文:陈梁锋,朱渊,刘晓钰,裴燕,乔明华,沈伟,徐华龙,范康年.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[J].化学学报,2009,67(23):2739-2744.
作者姓名:陈梁锋  朱渊  刘晓钰  裴燕  乔明华  沈伟  徐华龙  范康年
作者单位:复旦大学化学系,分子催化和功能材料重点实验室,上海,200433
基金项目:“973”国家重点基础研究发展规划(No.2006CB202502);;国家自然科学基金(Nos.20673025,20803011);;霍英东教育基金会(No.104022);;上海市科委(Nos.06JC14009,07ZR14007,08DZ2270500)资助项目
摘    要:以化学吸附水解法、蒸氨法和浸渍法制备了Cu/SiO2催化剂, 并用于草酸二甲酯氢解制备乙二醇的反应. 发现用化学吸附水解法制备的催化剂具有最高的催化活性和乙二醇选择性, 乙二醇得率可达92.6%. 对还原前后不同方法制备的催化剂进行表征发现, 浸渍法制备的催化剂中Cu物种不能很好地得到分散, 因此活性较差. 蒸氨法和化学吸附水解法能较好地分散Cu物种. 由于化学吸附水解法制备的催化剂的Cu0表面积较蒸氨法的大, 且Cu+表面积相当, 故活性高于蒸氨法制备的催化剂.

关 键 词:Cu/SiO2  制备方法  草酸二甲酯  氢解  乙二醇
收稿时间:2008-12-15
修稿时间:2009-04-29

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.Cu/SiO2 Catalysts Prepared by Different Methods for Hydrogenolysis of Dimethyl Oxalate to Ethylene Glycol[J].Acta Chimica Sinica,2009,67(23):2739-2744.
Authors:Chen Liangfeng  Zhu Yuan  Liu Xiaoyu  Pei Yan  Qiao Minghua  Shen Wei  Xu Hualong  Fan Kangnian
Institution:Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials;Department of Chemistry;Fudan University;Shanghai 200433
Abstract: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 a...
Keywords:Cu/SiO2  preparation method  dimethyl oxalate  hydrogenation  ethylene glycol  
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