分子筛催化合成正丁酸乙酯的研究  

Synthesis of ethyl butyrate with molecular sieves as catalysts

作　　者：彭荣[1] 李淑琴[1] 

机构地区：[1]襄樊学院化学与生物科学系,湖北襄樊441051

出　　处：《天津化工》2007年第1期26-28,共3页Tianjin Chemical Industry

摘　　要：分子筛催化剂作为一种化工新材料在近年来得到了快速发展和广泛应用。正丁酸乙酯是一种重要的香料和用途较广泛的化工产品,本实验用硫酸特殊处理过的人造沸石作催化剂,合成了正丁酸乙酯。同时考察了合成条件对正丁酸和无水乙醇酯化反应的影响。适宜的条件为催化剂用量2g,n(正丁酸)∶n(无水乙醇)=1∶1.5,带水剂环己烷用量为10mL,反应温度为75℃～80℃,反应时间为3h。在此条件下正丁酸的转化率在80%以上。该催化剂可以重复使用。Molecular sieves catalysts, as a novel chemical material, has developed rapidly and applied extensively. Ethyl butyrate, an important flavor and chemical, was catalytic synthesized with synthetic zeolite treated with sulfate acid. The reaction conditions were discussed and the results showed that the proper conditions were below： catalyst content 2.0 g, n（butyric acid）：n（ethanol）=1：1.5, hexamethylene content 10 mL, at 75℃-80℃ for 3 h. The conversion of butyric acid was over 80%. The catalyst can be recycled.

关 键 词：正丁酸乙酯 酯化反应 分子筛 硫酸改性人造沸石 

分 类 号：TQ306.2[化学工程]