铜-水滑石型催化剂在草酸二甲酯加氢反应中的应用  

APPLICATION RESEARCH OF Cu HYDROTALCITE CATALYST ON HYDROGENATION OF DIMETHYL OXALATE

作　　者：唐博合金[1] 朱玥[1] 陆颖音[1] 徐菁利[1] 

机构地区：[1]上海工程技术大学化学化工学院,上海201600

出　　处：《精细石油化工》2009年第2期15-18,共4页Speciality Petrochemicals

基　　金：上海市教委项目(No.07ZZ160)基金资助项目

摘　　要：采用共沉淀方法制备Cu-Al、Cu-Mg-Al、Cu-Zn-Al水滑石作为草酸二甲酯加氢制乙二醇新型催化剂,并经XRD和IR进行了表征。在压力为2.0 MPa,氢酯摩尔比50:1,氢气体积空速3 000h^(-1),反应温度180～210℃条件下,草酸二甲酯加氢制乙二醇催化剂的评价结果表明,Cu-Mg-Al水滑石催化剂具有优良的催化性能,草酸二甲酯的转化率高达99.5%,选择性为100%;另外,Cu-Zn-Al水滑石催化剂也同样显示出良好的催化活性,草酸二甲酯的转化率及乙二醇的选择性分别达到93.8%和97.5%,远高于浸渍法制备的Cu/SiO_2、Cu/Al_2O_3(Cu 20%)为催化剂。Cu-Al, Cu-Mg-Al, Cu-Zn-Al hydrotalcite used as the new type catalysts for hydrogenation of dimethyl oxalate （DMO） to ethyl glycol were prepared by coprecipitation method. The catalysts were characterized by XRD and IR. The catalysts for hydrogenation of dimethyl oxalate to ethyl glycol were evaluated under the following condition.2.0 MPa,n（H2）： n（DMO） =50 ： 1, 180- 210℃ and LHSV： 3 000 h^-1. The results show that Cu-Mg-Al hydrotalcite exhibit excellent catalytic performace, and DMO conversion of 99.5%, selectivity of 100% were obtained. Moreover, the Cu-Zn-Al hydrotalcite also exhibit excellent catalytic performance, and DMO conversion of 93.8%, selectivity of 97.5% were obtained. The catalytic performances of the catalysts are confirmed to be much better than Cu/SiO2 ,Cu/Al2O3[w（Cu）=20%] as catalysts prepared by impregnation method.

关 键 词：水滑石催化剂 草酸二甲酯加氢 乙二醇 

分 类 号：O643.38[理学—物理化学] TQ032[理学—化学]