酸性功能化离子液体催化合成马来酸二丁酯研究  

Study on acid functionalized ionic liquid as catalyser for synthesis of dibutyl maleate

作　　者：杨小红[1] 李文娟[1] 刘艳霞[1] 李平[1] Yang Xiaohong Li Wenjuan Liu Yanxia Li Ping(Key Laboratory for Macromolecular Science and Chemical Ecology of Inner Mongolia, Department of Chemistry, Jining Normal University,Wulanchabu 012000,China)

机构地区：[1]内蒙古大分子科学与化学生态学重点实验室,集宁师范学院化学系,内蒙古乌兰察布012000

出　　处：《中国胶粘剂》2017年第1期5-8,32,共5页China Adhesives

基　　金：内蒙古自治区高等学校自然科学研究项目(NJZY14296)

摘　　要：以3种离子液体N-甲基咪唑硫酸氢盐([Hmim]HSO_4)、1-(3-磺酸基丙基)吡啶硫酸氢盐([HSO_3-p Py]HSO_4)和1-甲基-3-(3-磺酸基丙基)咪唑硫酸氢盐([HSO_3-pmim]HSO_4)分别作为催化剂,采用顺丁烯二酸酐和正丁醇的酯化反应法制备了DBM(马来酸二丁酯)。研究结果表明:当n(顺丁烯二酸酐)∶n(正丁醇)=1∶4、反应时间为3 h、反应温度为130℃和w([HSO_3-p Py]HSO_4)=6%(相对于反应物质量而言)时,酯化率(为95.3%)相对较大,并且[HSO_3-p Py]HSO_4循环使用6次后酯化率仍不低于93.0%。When three kinds of ionic liquids,which were N-methyl imidazole hydrogen sulfate salt（[Hmim]HSO4）,1-（3-sulfo propyl）pyridine hydrogen sulfate salt（[HSO3-p Py]HSO4）and 1-methyl-3-（3-sulfo propyl）imidazole hydrogen sulfate salt（[HSO3- pmim]HSO4）,were respectively used as catalysers,the DBM（dibutylmaleate） was prepared by esterification between maleic anhydride and n- butyl alcohol. The research resultsshowed that the esterification rate（95.3%）was relatively larger,and the esterification rate after recycling [HSO3-p Py]HSO4for six times was still no less than 93.0% when molar ratio of n（maleic anhydride）∶n（n-butyl alcohol）was 1∶4,reaction time and temperature were 3 h and 130 ℃ respectively,and mass fraction of [HSO3-p Py]HSO4was 6% in reactant.

关 键 词：酯化反应 马来酸二丁酯 催化活性 离子液体 

分 类 号：TQ414.4[化学工程]