Ru-Pd/C催化对苯二甲酸二甲酯加氢制备1,4-环己烷二甲酸二甲酯  

Catalytic Hydrogenation of Dimethyl Terephthalat to Prepare Dimethyl 1,4-Cyclohexanedicarboxylate over Ru-Pd /C Catalyst

作　　者：臧涵 夏志[1] 申卫卫 宋金文[2] 

机构地区：[1]江苏金桥盐化集团有限责任公司,江苏连云港222000 [2]南京大学连云港高新技术研究院,江苏连云港222069

出　　处：《精细化工》2014年第4期447-451,共5页Fine Chemicals

基　　金：连云港市产学研联合研究项目(CXY1211)~~

摘　　要：采用纳米级Ru-Pd/C催化剂,在温和条件下将其应用于对苯二甲酸二甲酯(DMT)加氢制备1,4-环己烷二甲酸二甲酯(DMCD)的反应。考察了溶剂、反应温度、压力、催化剂用量对DMT加氢的影响。结果表明,在5 000mL高压反应釜中,最佳工艺条件为:温度140℃、压力4.0 MPa、溶剂异丙醇2 000 mL、DMT 1 300 g、催化剂65g,在该条件下,DMT转化率为99.8%,DMCD选择性为96.3%。保持反应条件不变,催化剂循环使用22次后,DMT转化率为99.0%,DMCD选择性为95.1%。Dimethyl 1,4-cyclohexanedicarboxylate （DMCD） was synthesized by hydrogenation of dimethyl terephthalat （DMT） under mild conditions on nanoseale Ru-Pd/C catalysts. The effects of solvent, reaction temperature, pressure and amount of catalyst have been investigated. Under optimal reaction conditions of 140 ℃,4.0 MPa pressure, isopropanol 2 000 mL, DMT dosage 1 300 g, and catalyst dosage 65 g, the conversion of DMT and the selectivity to DMCD respectively amount to 99.8 % and 96. 3% in 5 000 mL high pressure reactor. After the Ru-Pd/C catalyst was reused for 22 times under the same conditions ,the conversion of DMT and the selectivity to DMCD still remain at 99.0% and 95.1% , respectively.

关 键 词：对苯二甲酸二甲酯 1 4-环己烷二甲酸二甲酯 纳米级Ru-Pd C催化剂 催化与分离提纯技术 

分 类 号：TQ426.94[化学工程]