己二酸二丁酯催化合成动力学研究  

Study on Catalytic Synthesis of Dibutyl Adipate and Kinetics of Esterification

作　　者：孙晓波[1] 刘焕[1] 栾向海[1] 孟洁[2] 刘国际[1] 

机构地区：[1]郑州大学化学工程学院,河南郑州450001 [2]河南省计量科学研究院,河南郑州450008

出　　处：《郑州大学学报（工学版）》2009年第3期101-105,共5页Journal of Zhengzhou University（Engineering Science）

基　　金：河南省教育厅自然科学研究计划资助项目(2009A530005);郑州大学创新实验计划资助项目(2008cxsy005)

摘　　要：采用磷钨酸为催化剂、甲苯为带水剂,利用均匀设计实验考察醇酸摩尔比、催化剂用量、带水剂用量和反应时间对己二酸二丁酯收率的影响.筛选出最佳工艺条件:醇酸摩尔比为3.3∶1,催化剂用量为酸质量的1.5%,带水剂用量为体系总质量的24%,反应时间为2 h,己二酸二丁酯收率可达99.45%.对实验数据进行回归处理,获得不同反应条件下动力学参数,结果表明,该酯化反应服从二级不可逆动力学模型.反应表观活化能Ea=97.55 kJ.mol-1,指前因子k0=1.75×1011L.m in.Uniform design is used to obtain the optimal technic of the synthesis of dibutyl adipate,with the phosphotungstic acid as catalyst,and toluene as azeotropic solvent,with the raw material of adipic acid and n-butanol.Various factors such as molecular ratio of n-Butanol to adipic acid,amount of catalyst,reaction time,amount of azeotropic solvent which would influence the reaction were investigated.The results indicate that 99.45% yield could be obtained with the following optimal reaction conditions: the mole...

关 键 词：磷钨酸 己二酸二丁酯 酯化反应 动力学 

分 类 号：TQ225.242[化学工程—有机化工]