一种酸性离子液体催化酯交换反应工艺条件研究  

Study on the Process Conditions of Ester Exchange Reaction Catalyzed by Acidic Ionic Liquid

作　　者：黄明刚[1,2] 徐淳 李国春[1,2] 李夏蕾 甘巧 HUANG Minggang;XU Chun;LI Guochun;LI Xialei;CAN Qiao(Sichuan Vocationaland Technical College of Chemical Industry,Luzhou 646300,Sichuan,China;Key Laboratory of Fine Chemical Application Technology,Luzhou 646300,Sichuan,China)

机构地区：[1]四川化工职业技术学院,四川泸州646300 [2]精细化工应用技术泸州市重点实验室,四川泸州646300

出　　处：《四川化工》2025年第2期1-4,19,共5页Sichuan Chemical Industry

基　　金：泸州市科学技术和人才工作局应用基础研究项目(2021-JYJ-91)。

摘　　要：采用1-丁基磺酸-3-甲基咪唑三氟甲烷磺酸盐催化对苯二甲酸二甲酯(DMT)与1,4-丁二醇(BDO)进行酯交换反应,研究了催化剂的用量、酯醇摩尔比、反应时间、反应温度等因素对酯交换反应的影响。得出最佳工艺条件:使用1-丁基磺酸-3-甲基咪唑三氟甲烷磺酸盐离子液体作为催化剂,酯醇摩尔比是1:2.2,反应温度是150℃,反应时间是30min,酯交换率是97.0%。并对产物对苯二甲酸双羟丁二酯(BHBT)红外光谱图进行解析,结果与参考文献对比,表明产物是BHBT。The ester exchange reaction between dimethyl terephthalate(DMT)and 1,4-butanediol(BDO)was catalyzed by 1-butylsulfonic acid-3-methylimidazolium trifluoromethanesulfonate.The effects of catalyst dosage,ester alcohol molar ratio,reaction time,reaction temperature,and other factors on the ester exchange reaction were studied.The optimal process conditions were determined as follows:1-butylsulfonic acid-3-methylimidazolium trifluoromethanesulfonate ionic liquid was used as the catalyst,the ester alcohol molar ratio was 1:2.2,the reaction temperature was 150 ℃,the reaction time was 30 min,and the ester exchange rate was 97.0%.And the infrared spectrum of the product BHBT was analyzed,and the results were compared with the reference literature,indicating that the product is BHBT.

关 键 词：1-丁基磺酸-3-甲基咪唑三氟甲烷磺酸盐 对苯二甲酸二甲酯 1 4-丁二醇 酯交换 催化 工艺条件 

分 类 号：TQ225.24[化学工程—有机化工]