SnCl_4·5H_2O催化合成甘油单硬脂酸酯  

A Study on the Catalytic Activity of Stannic Chloride in Glycerin Monostearate Esterification

作　　者：罗根祥[1] 刘春生[1] 秦永航[1] 陈平[1] 赵宇 

机构地区：[1]抚顺石油学院材料科学系,辽宁抚顺113001 [2]抚顺石油三厂,辽宁抚顺113001

出　　处：《抚顺石油学院学报》2001年第2期22-24,共3页Journal of Fushun Petroleum Institute

摘　　要：研究了在硼酸保护的条件下 ,以SnCl4 ·5H2 O为催化剂合成甘油单硬脂酸酯的方法 ,着重考察了催化剂用量、带水剂种类、催化剂种类对反应产率的影响。结果表明 ,SnCl4 ·5H2 O对此反应具有较高的催化活性。当甲苯作带水剂 ,n(甘油 )∶n(硼酸 )∶n(硬脂酸 ) =2∶1∶2 ,催化剂 1g ,反应温度为 1 60℃时 ,其最高产率可达 96%。Glycerin monostearate is currently an important additives, emulsifier and so on in food or medicine fields. In this work, the synthesis process of glycerin monostearate catalyzed by stannic chloride, was studied in the presence of boric acid. The effect of catalyst content and the type of water taking regent were mainly investigated. The result shows that stannic chloride has a high catalytic activity. The optimal technical conditions were established as follows: molar ratio of glycerin to boric acid to stearic acid was 2∶1∶2 ; the amount of catalysts was 1 g; the reaction temperature was 160 ℃. Under the conditions toluene acts as water taking regent, the optimal yield could get to 96%. The sample of the product was analyzed by FITR. The melting point is 54～56 ℃.

关 键 词：甘油单硬脂酸酯 SnCI4·5H2O 硼酸 合成 催化剂 四氯化物 

分 类 号：TQ225.241[化学工程—有机化工]