催化合成L-吡咯烷酮羧酸月桂酯  

Catalytic synthesis of L-2-pyrrolidone-5-carboxylic acid lauryl alcohol ester

作　　者：杨晓玲[1] 陈刚 郑方[1] 侯耀永[1] 

机构地区：[1]青岛科技大学化工学院,山东青岛266042 [2]青岛久润精细化工有限公司,山东青岛266000

出　　处：《日用化学工业》2006年第6期398-400,共3页China Surfactant Detergent & Cosmetics

摘　　要：以L-吡咯烷酮羧酸和月桂醇为原料,固载催化剂A,通过酸醇酯化反应直接合成L-吡咯烷酮羧酸月桂酯。探讨催化剂种类、用量、物料比、反应时间和温度对酯化反应影响,确定适宜合成工艺条件:n(月桂醇)∶n(L-吡咯烷酮羧酸)=1.0∶1.3,环己烷为带水剂,每0.1 mol月桂醇加入催化剂A 3.5 g,170℃反应4 h,酯化率达98.6%。固载催化剂A具有较好的活性,重复使用9次时酯化率仍可达93.4%。L - 2 - pyrrolidone - 5 - carboxylic acid lauryl alcohol ester was synthesized by L - 2 - pyrrolidone - 5 - carboxylic acid and lauryl alcohol with solid supported catalyst A. The effect of the kind of catalyst, the dosage of the catalyst, ratio of reactants , reaction time and reaction temperature on esterification reaction were discussed. The optimal reaction conditions were established as follows： n （ lauryl ＇alcohol） ： n （ L - 2 - pyrrolidone - 5 - carboxylic acid） = 1.0 ： 1.3, cyclohexane as water- carrying agent, catalyst A 3.5 g （per 0.1 mol of lauryl alcohol ）,reaction time 4 h at 170 ℃, estefification yield achieves 98.6%. Catalyst A can be reused for 9 times with esterification conversion of 93.4%.

关 键 词：表面活性剂 L-吡咯烷酮羧酸月桂酯 催化合成 

分 类 号：TQ423[化学工程]