固体超强酸SO_4^(2-)/TiO_2-凹凸棒土催化合成尼泊金十二酯的研究  

Study on the synthesis of dodecyl nipogin ester with solid superacid SO_4^(2-)/TiO_2-attapulgite as catalyst

作　　者：钱运华[1] 金叶玲[1] 陈静[1] 胡涛[1] 谭立强[1] 

机构地区：[1]淮阴工学院化工系,江苏淮安223003

出　　处：《中国调味品》2007年第12期41-43,共3页China Condiment

基　　金：淮安市工业项目(HAG04013);江苏省科技攻关项目(BE2004387)

摘　　要：对羟基苯甲酸和正十二醇在固体超强酸SO42-/TiO2-凹凸棒土催化下,以苯为溶剂,直接酯化合成尼泊金十二酯,其最佳的反应条件为:对羟基苯甲酸与正十二醇摩尔比为1∶4,催化剂用量为4%,反应时间4h,产品收率达91.2%。该催化剂与单组分固体超强酸SO42-/TiO2相比,具有成本较低,与产物易分离,可重复使用,不污染环境等优点,是对环境友好并具有应用前景的绿色催化剂。The dodecyl ester of p-hydroxybenzoic acid was synthesized by a direct esterification from dodecyl alcohol and p--hydroxybenzoic acid with solid superacid SO4^2-/TiO2-attapulgite as catalyst in benzene with a yield of 91.2%. The optimum conditions for the reaction are as follow： p-hydroxybenzoic acid and dodecyl alcohol in the mole ratio of 1：4 ,the weight of catalyst 4% ;the reaction time 4h . Comparied with unfixed solid superacid SO4^2-/TiO2 ,this complex catalyst is lower cost, easy to separate, and can be applied repeatedly. The catalyst is an environment-frlendly green catalyst with great applied value in the future.

关 键 词：固体超强酸 催化剂 尼泊金十二酯 酯化反应 

分 类 号：TS202.8[轻工技术与工程—食品科学]