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Cu/SiO_2催化剂上草酸二甲酯加氢反应的研究  ( EI收录)  

Studies on Hydrogenation of Dimethyl Oxalate on Cu/SiO_2 Catalyst

文献类型:期刊文献

中文题名:Cu/SiO_2催化剂上草酸二甲酯加氢反应的研究

英文题名:Studies on Hydrogenation of Dimethyl Oxalate on Cu/SiO_2 Catalyst

作者:李竹霞[1];钱志刚[1];赵秀阁[1];肖文德[1]

机构:[1]华东理工大学联合化学反应工程研究所,上海200237

年份:2004

卷号:20

期号:2

起止页码:121

中文期刊名:化学反应工程与工艺

外文期刊名:Chemical Reaction Engineering and Technology

收录:CSTPCD;;EI(收录号:2004338314042);Scopus;北大核心:【北大核心2000】;CSCD:【CSCD2011_2012】;

语种:中文

中文关键词:草酸二甲酯;加氢反应;乙二醇;二氧化硅负载铜催化剂;反应原理;热力学分析;乙醇酸甲酯

外文关键词:dimethyl oxalate; methyl glycolate; ethylene glycol; hydrogenation; Cu/SiO2 catalyest

摘要:对草酸二甲酯气相催化加氢反应体系进行了热力学分析和实验研究,考查了Cu/SiO2催化剂的最佳活化温度,对影响产物组成的因素和分布规律进行了讨论。结果表明,催化剂的适宜还原温度为523~623K;低氢酯比低压和高溶剂比有利于乙醇酸甲酯的生成;提高氢酯比或反应压力可以提高乙二醇的选择性,氢酯比和反应压力的适宜组合均能得到较好的草酸二甲酯转化率和乙二醇选择性。产物组成随草酸二甲酯转化率增加呈一定的变化规律,可根据市场需求调整产物结构,获得最佳的经济效益。
Catalytic hydrogenation of Dimethyl Oxalate(DMO) on Cu/SiO2 was studied. Thermo-dynamic analysis indicated that high ratio of H2/DMO and high pressure are favorable to producing Ethylene Glycol (EG). Contrarily, low ratio of H2/DMO and low pressure are advantageous to producing Methyl Glycolate (MG). The proper active temperature of catalyst Cu/SiO2 for hydrogenation of DMO was 523K-623K. The most preferable reaction conditions for EG were optimized; temperature at 468K-478K and 1. Oh-1 of LHSV, the results also showed the proper coordination of H2/DMO ratio and reaction pressure could give better conversion of DMO and selectivity of EG.

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