氢氧化钠与甘油催化棕榈基油脂酯交换反应

Chemical Transesterification of Palm Oil Catalyzed by Sodium Hydroxide and Glycerol Admixture

利用氢氧化钠与甘油催化棕榈液油和棕榈硬脂进行酯交换反应,考察反应温度、氢氧化钠浓度、反应时间、氢氧化钠与甘油比例、搅拌速度对反应产物固体脂肪含量、甘油三酯碳数、酸值、皂化值、熔点的影响。结果表明:在反应温度110℃、反应时间30 min,氢氧化钠浓度0.5%、氢氧化钠与甘油的比例1︰1、搅拌速度150 r/min的条件下,氢氧化钠与甘油混合物的催化效果接近于甲醇钠。

Transesterification of palm oil and palm stearin was catalyzed by sodium hydroxide and glycerol admixture,factors such as reaction temperature,NaOH concentration,reaction time,ratio of NaOH/glycerol and stirring speed were investigated to evaluate their influence on solid fat content,triglyceride carton number,acid value,saponification value and slip melting point of the product.The results showed that the optimal catalysis conditions were:reaction temperature 110℃,reaction time 30 min,NaOH concentration 0.5%,ratio of NaOH/glycerol 1:1,stirring speed 150 r/min.