草酸二丁酯的催化合成  

Synthesis of dibutyl oxalate by catalyst

作　　者：孙琳[1] 吕菊波[1] 刘春萍[1] 

机构地区：[1]鲁东大学化学与材料科学学院,山东烟台264000

出　　处：《化学工程师》2005年第11期15-16,共2页Chemical Engineer

基　　金：鲁东大学校基金

摘　　要：以草酸和正丁醇为原料,分别采用不同催化剂——对甲苯磺酸和强酸性阳离子交换树脂合成草酸二丁酯,用正交实验法研究了两种催化剂对该反应的催化性能;确定了各自的最佳合成条件。以对甲苯磺酸为催化剂,在醇酸比为4:1,催化剂用量15％,回流分水1h,以苯为带水剂的反应条件下,酯收率达 83．6％;以强酸性阳离子交换树脂为催化剂,在醇酸比3:1,催化剂用量10%,回流分水1．5h,以甲苯为带水剂的反应条件下,酯收率达89．5％,且催化剂可重复使用。In this paper, with oxalic acid and n - butyl alcohol, dibutyl oxalate was synthesized by using p - toluene sulfonic acid and strong acid ionic exchange resin as catalysts. The catalytic activities and each optimal conditions were decided by orthogonal experiments. The yield of dibutyl oxalate was 83.6 % when the material ratio（acid/alcohol） 4： 1, p - toluene sulfonic acid content 15 %, reaction time 1 h and benzene as water taker. The yield of dibutyl oxalate was 89.5 % when the material ratio（acid/alcohol） 3：1, strong acid ionic exchange resin content 10%, reaction time 1.5h and toluene as water taker.The result showed that strong acid ionic exchange resin had higher catalytic activity and can be reused.

关 键 词：对甲苯磺酸 强酸性阳离子交换树脂 催化剂 合成 草酸二丁酯 

分 类 号：TQ426.7[化学工程]