固体超强酸SO_4^(2-)/SnO_(2-)Al_2O_3催化合成香料己酸正辛酯  

Synthesis of octyl hexanoate catalyzed by solid superacid SO_4^(2-)/SnO_(2-)Al_2O_3

作　　者：闫鹏[1] 郭海福[1] 陈志胜[1] 吴燕妮[1] 

机构地区：[1]肇庆学院化学化工学院,广东肇庆526061

出　　处：《食品工业科技》2014年第14期339-342,共4页Science and Technology of Food Industry

基　　金：广东省自然科学基金项目(S2012040007383);广东省教育厅科技创新项目(2013KJCX0193);肇庆市科技计划项目(2012G030);肇庆市科技创新计划项目(2011G28)

摘　　要：以固体超强酸SO42-/SnO2-Al2O3为催化剂,己酸和正辛醇为原料经酯化反应合成己酸正辛酯。考察了酯化反应条件对酯化率的影响,并采用GC-MS和FTIR对产物进行了表征分析。由正交实验结果得出己酸正辛酯的优化合成工艺为:酸醇摩尔比1∶1.5、催化剂用量0.45g(相对于0.05mol己酸)、带水剂环己烷用量3mL、反应时间1.5h。在此条件下,反应的酯化率可达98.04%。The octyl hexanoate was synthesized by hexanoic acid and octanol,using solid superacid SO4^2-/SnO2^-Al2O3 as catalyst. The effect of esterification conditions on the esterification rate were investigated,and the product were characterized by GC-MS and FTIR. Through the orthogonal experiment,the optimized synthesis of octyl hexanoate was obtained.the molar ratio of hexanoic acid to octanol was 1：1.5,amount of catalyst was 0.45g （relative to 0.05mol hexanoic acid）,cyclohexane dosage was 3mL,and reaction time was 1.5h, under this condition,the esterification rate could achieve 98.04%.

关 键 词：固体超强酸 己酸正辛酯 己酸 辛醇 合成 

分 类 号：TS202.3[轻工技术与工程—食品科学]