摘要
以固体酸Ti(SO4)2/SiO2为催化剂,己酸和正丁醇为原料,合成酒用香料己酸丁酯。考察了催化剂用量、醇酸摩尔比、反应时间等因素对酯化率的影响,得出固体酸Ti(SO4)2/SiO2催化合成己酸丁酯的优化合成条件为:n(正丁醇)∶n(己酸)为3∶1,反应时间为1.5 h,催化剂用量为0.30 g(以0.05 mol己酸计),在此条件下酯化率可达97.17%,催化剂重复使用性能较好。
In the experiments, solid acid Ti （SO4）2/SiO2 was used as catalyst and caproic acid and n-butanol were used as raw materials to synthe-size butyl hexanoate （wine-use flavouring）. The effects of the use level of catalyst, molar ratio of alcohol to acid, and reaction time on the esterifi-cation rate were investigated, and the best catalytic reaction conditions of solid acid Ti（SO4）2/SiO2 for butyl hexanoate were summer up as follows：n （n-butanol）：n（caproic acid）=3：1, reaction time was 1.5 h, and the use level of catalyst was 0.30 g （counted by 0.05 mol caproic acid）. Under those conditions, the esterification rate could reach up to 97.17%, and the catalyst had good performance for repeated use.
出处
《酿酒科技》
北大核心
2014年第8期31-32,36,共3页
Liquor-Making Science & Technology
基金
广东省自然科学基金项目(S2012040007383)
肇庆市科技计划项目(2012G030)
肇庆市科技创新计划项目(2011G28)
关键词
酒用香料
己酸丁酯
催化合成
固体酸
wine-use flavouring
butyl hexanoate
catalytic synthesis
solid acid
