作　　者： ; ; ; ; ;

机构地区： 吉首大学化学化工学院

出　　处： 《工业催化》 2008年第5期58-60,共3页

摘　　要： 以草酸和正丁醇为原料,三氯化铁为催化剂,环己烷为带水剂,合成了草酸二丁酯。采用正交实验研究了醇酸物质的量比、催化剂用量、带水剂用量和反应时间等因素对产物收率的影响。结果表明,三氯化铁是合成草酸二丁酯的良好催化剂,当草酸加入量为0.1mol、醇酸物质的量比为3.5∶1、催化剂用量为反应物总质量的4.0%、环己烷用量32mL和回流温度下反应40min,草酸二丁酯的平均收率可达91.6%。 The esterfication of oxalic acid and butyl and cyclohexane as water carrying agent. The effects alcohol was studied with femic chloride as catalyst of different factors such as mole ratio of reactants, the dosage of catalyst and water carrying agent, and reaction time on the yield of dibutyl oxalate were studied by orthogonal test. The experimental results showed that ferric chloride was a good catalyst for synthesis of dibutyl oxalate. The optimum reaction condition was attained as follows ： the amount of oxalic acid 0.1 tool, mole ratio of butyl alcohol to oxalic acid 3.5, catalyst dosage 4.0% of the total mass of the reactants, cyclohexane 32 mL, refluent reaction time 40 min. The average yield of dibutyl oxalate reached 91.6% under the optimum condition.

关 键 词： 精细化学工程 草酸二丁酯 三氯化铁 催化酯化 正交实验

领　　域： [理学] [理学] [理学] [理学]