离子交换树脂催化合成马来酸二丁酯动力学研究  

Kinetic study on synthesis of dibutyl maleate catalyzed by ion exchange resin

作　　者：易正虎 蒋文伟[1] 李晶晶 毛维 姚佩 李鹏翔 杨德华 YI Zheng-hu;JIANG Wen-wei;LI Jing-jing;MAO Wei;YAO Pei;LI Peng-xiang;YANG De-hua(School of Chemical Engineering,Sichuan University,Chengdu 610065,Sichuan Province,China;Chengdu Huien Fine Chemical Co.,Ltd.,Chengdu 610000,Sichuan Province,China)

机构地区：[1]四川大学化学工程学院,四川成都610065 [2]成都惠恩精细化工有限责任公司,四川成都610000

出　　处：《化学工程》2020年第7期62-67,72,共7页Chemical Engineering(China)

摘　　要：为了给DBM(马来酸二丁酯)合成工艺以及二元酯化理论提供参考依据,文中以Amberlite IR-120阳离子交换树脂作为催化剂,采用顺丁烯二酸酐和正丁醇酯化制备了DBM,并推导出该反应的拟均相反应动力学模型(PH模型)、Langmuir-Hinshelwood模型(LHHW模型)和Eley-Rideal模型(ER模型),并与实验数据进行了拟合。研究结果表明,最佳反应条件为醇酐摩尔比为4:1、温度120℃、催化剂质量分数为7.5%(相对反应体系的总质量),酯化率最大可达96%,且对产品样品进行FT-IR分析,结果表明符合DBM的结构。由MATLAB软件分析结果表明,只有正丁醇吸附在催化剂表面的Eley-Ridel模型与实验数据拟合较好,即为顺酐与正丁醇酯化反应的动力学模型。In the work,dibutyl maleate(DBM)was prepared by esterification of maleic anhydride and n-butanol with Amberlite IR-120 as catalyst to provide a reference for the synthesis of DBM and the theory of binary esterification.The pseudo-homogeneous kinetic model,Langmuir Hinshelwood model and Eley-Rideal model have been derived and fitted with the experimental data.The experimental results show that the optimal esterifying conditions are alcoholic anhydride molar ratio of 4∶1,catalyst content of 7.5%,and temperature of 120℃and the maximum esterification rate can reach to 96%.FT-IR analysis of the product samples show that the product is DBM certainly.The results analyzed by MATLAB software show that only the Eley-Ridel model with n-butanol adsorbed on the catalyst surface fits the experimental data well and represents the kinetics model for esterification of maleic anhydride and n-butanol.

关 键 词：Amberlite IR-120 马来酸二丁酯 酯化率 动力学模型 

分 类 号：TQ414.4[化学工程]