负载型MoO_3催化合成柠檬酸三丁酯  

Synthesis of tributyl citrate catalyzed by active carbon supported MoO_3

作　　者：何林[1] 杜广芬[1] 高敬芝[2] 顾承志[1] 王卫[1] 代斌[1] 

机构地区：[1]石河子大学化学化工学院新疆兵团化工绿色过程重点实验室,新疆石河子832000 [2]石河子大学师范学院,新疆石河子832000

出　　处：《应用化工》2013年第7期1217-1219,1223,共4页Applied Chemical Industry

基　　金：兵团博士资金资助项目(2011BB011)

摘　　要：采用泥浆浸渍法制备了6种负载型MoO3固体超强酸催化剂,用于催化一水合柠檬酸与正丁醇酯化合成绿色增塑剂柠檬酸三丁酯。考察了催化剂载体、催化剂用量、反应时间、酸醇比和反应温度等对反应的影响。结果表明,最佳反应条件为:以MoO3/活性炭为催化剂,催化剂用量8%(w/w),酸醇摩尔比1∶4,反应温度140℃,反应时间为3.0 h,酯化率可达到99%以上。另外,催化剂可以循环利用5次以上,酯化率仍保持在较高水平。Six examples of solid superacid catalysts MoO3/S were prepared through slurry impregnation method.The catalytic activity of solid acid catalysts in the synthesis of tributyl citrate was explored.The effects of catalyst support,catalyst loading,the ratio of citric acid and n-butyl alcohol,reaction time and reaction temperature were studied.The results showed that the optimum reaction conditions were obtained as follows：with 8% MoO3/C and 4.0 equiv of n-butyl alcohol,conducted the reaction for 3.0 h at 140 ℃,the final tributyl citrate can be obtained in 99% yield.In addition,the catalyst can be seperated from the reaction mixture very easily,which can be used for many times with high catalytic activity.

关 键 词：MOO3 固体超强酸 柠檬酸三丁酯 柠檬酸 正丁醇 

分 类 号：TQ414.99[化学工程]