固体酸催化合成柠檬酸三甲酯  

Study on the Catalytic Synthesis of Trimethyl Citrate by Solid Acid

作　　者：胡逢恺[1] 

机构地区：[1]黄山学院化学系,安徽黄山245000

出　　处：《化工时刊》2007年第5期44-46,共3页Chemical Industry Times

摘　　要：研究了几种固体酸催化合成柠檬酸三甲酯的催化活性。结果表明:四氯化锡的催化酯化活性最好,并讨论了以四氯化锡为催化剂时,醇酸物质的量比、催化剂用量、带水剂用量、反应时间与酯化程度的关系,确定了合成柠檬酸三甲酯的最佳条件∶醇酸物质的量比为8∶1,催化剂用量为1.2 g,带水剂用量为20 mL,反应时间为8 h。在最佳条件下,酯化率可达89%。The synthesis of trimethyl citrate with citric acid monohydrate and methanol as reactants and solid acids as catalyst was studied . The result showed that the best catalyst was Tin（IV） chloride pentahydrate. The factors of reaction were also investigated by experimmts. The results showed that the optimum conditions were as follows： molar ratio of citric acid monohydrate to methanol was 1 ： 8 ; weight of catalyst was 1.2 g ; the taking water reagent （benzene） was 15 mL; reaction times was 8 h. In this case, the easterification yield of trimethyl citrate was 89 %.

关 键 词：固体酸 柠檬酸三甲酯 催化剂 合成 

分 类 号：TQ414[化学工程]