PW_(12)/SnO_2催化合成α-亚麻酸植物甾醇酯  

Synthesis of phytosterol esters of α-linolenic acid by catalysis of PW_(12)/SnO_2

作　　者：何则强[1,2] 熊利芝[1,2] 梁凯[1] 

机构地区：[1]吉首大学生物资源与环境科学学院,湖南吉首416000 [2]中南大学化学化工学院,长沙410083

出　　处：《中国油脂》2010年第2期33-36,共4页China Oils and Fats

基　　金：国家自然科学基金(20376086);中国博士后科学基金(2005037700);湖南省自然科学基金(07JJ3014);湖南省教育厅科学研究项目(07A058);中南大学博士后科学基金(2004107)

摘　　要：用SnO2固载磷钨杂多酸(PW12/SnO2)催化合成α-亚麻酸植物甾醇酯,研究了醇酸摩尔比、反应温度、催化剂用量、反应时间等因素对酯化率的影响。实验结果表明:PW12/SnO2是合成α-亚麻酸植物甾醇酯的优良催化剂,在植物甾醇与α-亚麻酸摩尔比为1∶3,催化剂用量为(占总反应物料的质量分数)0.6%,温度50℃,反应时间5 h条件下,植物甾醇的酯化率为85.92%,所得产品α-亚麻酸植物甾醇酯的纯度为91.7%。Phytosterol esters of a - linolenic acid was synthesized by catalysis of SnO2 supported PW12 （ PW12/SnO2 ）, and the effects of molar ratio of phytosteroI to a - linolenic acid, reaction temperature, catalyst dosage and reaction time on the esterification rate were investigated. Results showed that PW12/SnO2 was a good catalyst to synthesize phytosterol esters of a - linolenic acid. The optimum conditions were as follows： molar ratio of phytosterol to a - linolenic acid 1 ： 3, reaction temperature 50 ℃, catalyst dosage 0.6% （based of feed stocks mass） , reaction time 5 h. Under the optimum conditions the esterification rate reached 85.92%. The purity of the finished product was 91.7%.

关 键 词：固载杂多酸 SNO2 Α-亚麻酸 植物甾醇 α-亚麻酸植物甾醇酯 

分 类 号：TQ645.98[化学工程—精细化工]