响应面法优化甘油酯转甲酯化条件

Transesterification conditions optimization of glyceride with methanol by response surface method

在反应温度、反应时间和甲醇钠用量3个单因素实验基础上,利用响应面分析法,以交酯化后样品中甘油和VE含量为评价指标,对甘油酯转甲酯化最佳条件进行了研究。结果表明,最佳反应温度73.7℃、反应时间2.1 h、甲醇钠用量0.51%(W/W)。在最佳条件下,VE保存率为90.5%,酯化率为89.4%。

Based on single factor experiment of esterifying temperature, esterifying time and sodium methoxide dosage, optimization on conditions of transesterifying triglyceride were studied by response surface method and by determining the content of glycerol and VE. The results showed that the optimal esterifying temperature was 73. 722 ,esterifying time was 2.1 h, sodium methoxide dosage was 0.51%. In the optimum conditions, the retention rate of VE and transesterification rate were 90.5 % and 89.4 % respectively.