TiOSO_4/SiO_2催化合成油酸月桂酯  

Preparation of lauryl Oleate Catalyzed by TiOSO_4/SiO_2

作　　者：周石柔[1] 徐中海[1] 廖德仲[2] 

机构地区：[1]岳阳职业技术学院基础医学部,湖南岳阳414000 [2]湖南理工学院化学化工系,湖南岳阳414006

出　　处：《湖南理工学院学报（自然科学版）》2009年第1期62-65,共4页Journal of Hunan Institute of Science and Technology(Natural Sciences)

摘　　要：研制得一种新型固体酸TiOSO4/SiO2,吸附吡啶的红外光谱表明,其表面主要存在Brnsted酸中心,该催化剂在油酸月桂酯的合成中具有很好的催化活性.催化剂制备和反应的优化条件如下:Ti(SO4)2负载量10%,焙烧温度450℃,催化剂用量2%,醇/酸摩尔比1.1,反应温度150℃,反应时间1.5h.优化条件下,酯化率达到95%以上.A solid acid TiOSO4/SiO2 was prepared by calcinations of Ti（SO4）2/SiO2 at high temperature. FT-IR spectra of pyridine adsorbed on the surface indicated that the catalyst had Bronsted acid centers. TiOSO4/SiO2 had good catalytic activity in esterification between oleic acid and lauryl alcohol. Optimum conditions found were as follows： Ti（SO4）2 loading 10%, calcinations temperature 450℃, molar ratio of lauryl alcohol to oleic acid 1.1, amount of catalyst upon mass of oleic acid 2%, reaction temperature 150℃, reaction time 1.5h. Toluene was used as entrainer. At optimum conditions the yield was above 95%.

关 键 词：固体酸 TiOSO4/SiO2 油酸 月桂醇 油酸月桂酯 催化活性 

分 类 号：O621.3[理学—有机化学]