杂多酸催化合成戊二酸二异辛酯的研究  

STUDY ON CATALYTIC SYNTHESIS OF DIISOOCTYL GLUTARATE BY CATALYST OF HETEROPOLY ACID

作　　者：许胜先 胡国强 

机构地区：[1]辽阳石油化工高等专科学校,辽宁辽阳111003

出　　处：《化工科技》2000年第1期22-25,共4页Science & Technology in Chemical Industry

基　　金：辽宁省教委科研项目! 95 3 2 1 3 43的部分内容

摘　　要：以从二羧酸中分离出的戊二酸和异辛醇为原料 ,在钨磷杂多酸催化作用下酯化合成了戊二酸二异辛酯。考察了醇酸摩尔比、反应温度、反应时间、催化剂用量等因素对酯化反应的影响 ,确定了合成戊二酸二异辛酯的工艺条件 :醇酸摩尔比 2 .5 :1、反应温度 1 40℃、反应时间 2h、催化剂用量为体系总质量的 0 .2 % ,在此条件下 ,酯化率可达 98%以上。The diisooctyl glutarate in catalysis of phospho-tungstic acid was preparated by esterification of isooctyl alcohol and glutaric acid separated from dicarboxylic acid.The effects of alcohol-acid ratio,reaction temperature,reaction time,and the amount of catalyst etc.were investigated.The optimum reaction conditions are that the molar ratio of alcohol-acid is 2.5:1,reaction temperature 140℃,reaction time 2 hours,and the amount of catalysts is 0.2% of total system mass under these conditions the yield of diisooctyl glutarate is greater than 98%.

关 键 词：钨磷杂多酸 酯化 戊二酸二异辛酯 催化 增塑剂 

分 类 号：TQ414.4[化学工程] TQ225.242