超声强化酯交换合成蔗糖月桂酸单酯的工艺  

Synthesis of sucrose laurate via transesterification under ultrasonic irradiation

作　　者：徐勇士[1] 杭方学[1] 李大成[1] 李红[1] 杨西竹[1] 

机构地区：[1]广西大学轻工与食品工程学院,广西南宁530004

出　　处：《化工进展》2013年第7期1656-1660,共5页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金(11164001);广西科学研究与技术开发计划(桂科能10100025)项目

摘　　要：以月桂酸甲酯和蔗糖为原料,无水碳酸钾为催化剂,在超声场中合成蔗糖月桂酸酯。考察了糖酯摩尔比、催化剂用量、DMSO试剂量及反应时间对蔗糖月桂酸单酯产率的影响,根据Box-Benhnken试验设计原理,采用三因素三水平的响应面分析法,建立了40 kHz超声场中合成蔗糖月桂酸单酯的二次多项式回归方程,确定了合成蔗糖月桂酸单酯的适宜工艺条件:糖酯摩尔比3.7∶1、催化剂用量占月桂酸甲酯质量的12.8%、DMSO试剂量为7.9 mL。在适宜工艺条件合成的蔗糖月桂酸单酯产率为68.16%。Sucrose laurate was synthesized under 40 kHz ultrasonic irradiation using sucrose and methyl laurate as raw materials and anhydrous potassium carbonate as catalyst .Effects of reaction time, molar ratio of sucrose to methyl laurate, DMSO amount and amount of catalyst on monoester yield were investigated. According to the Box-Benhnken design, the response surface methodology with 3 factors and 3 levels was used to set up a quadratic polynomial regression equation for the monoester yield as function of above three factors. The optimum conditions were obtained as follows： molar ratio of sucrose to methyl laurate 3.7 ： l, DMSO amount 7.9mL and amount of catalyst 12.8%. Under these conditions, monoester yield was 68.16%.

关 键 词：蔗糖月桂酸酯 超声 酯交换 响应面优化方法 

分 类 号：TQ423.2[化学工程] TQ225