SO_4^(2-)/Sb_2O_3/SiO_2复合固体超强酸催化合成乙酸异戊酯  

Synthesis of isoamyl acetate by composite solid super acid SO_4^(2-)/Sb_2O_3/SiO_2 catalyst

作　　者：舒华[1] 吴文胜[2] 

机构地区：[1]贵州铜仁学院生化系,贵州铜仁554300 [2]广东肇庆学院化学化工学院,广东肇庆526061

出　　处：《应用化工》2009年第3期339-342,共4页Applied Chemical Industry

基　　金：广东省自然科学基金资助项目(7010338);广东省科技厅资助项目(2005B40703004)

摘　　要：以乙酸和异戊醇为原料,固体超强酸SO24-/Sb2O3/SiO2作催化剂,催化合成乙酸异戊酯。考察了醇酸比、催化剂用量、反应温度与反应时间对酯化反应的影响。结果表明,乙酸异戊酯的最佳合成条件为:n(异戊醇)∶n(乙酸)=1.4∶1,催化剂用量为1.2 g,反应时间4 h,反应温度108~112℃,在此条件下酯化率可达95.7%。并用IR手段对产品进行了确证。Isoamyl acetate acid was synthesized by solid super acid SO4^2-/Sb2O3/SiO2 catalyst acetic, acid and isoamyl alcohol as raw material. The effect of materials ratio, catalyst amount, reaction temperature on esterification reaction was investigated. The best synthetic condition of isoamyl acetate is n （alcohol） ： n （acid） = 1.4 ： 1.0, the amount of catalyst 1.2 g, the reaction time is 4 h, the reaction temperature is 108 -112 ℃ ,the esterification yield 95.7% ,structure of the product was identified by means of IR.

关 键 词：复合固体超强酸 SO24-/Sb2O3/SiO2 催化合成 乙酸异戊酯 

分 类 号：TQ039.2[化学工程]