微波辐射合成单脂肪酸甘油酯

Synthesis of fatty acid monoglyceride under the irradiation of microwave

在微波辐射条件下 ,以氧化钙为催化剂 ,用脂肪酸和甘油合成了单脂肪酸甘油酯。讨论了微波功率、辐射时间、催化剂用量和醇酸摩尔比对反应的影响。其最佳反应条件为 :n(脂肪酸)∶n(甘油)=1∶2 ,催化剂氧化钙1 0 % ,微波功率为450W ,反应时间20min。该条件下的反应速率是常规加热条件下的9倍～13倍 ,其产物与常规加热相比具有较高的单酯含量。

The fatty acid monoglyceride was rapidly synthesized by esterification of fatty acid with ratio stearic acid in the catalysis of CaO under microwave irradiation.The effects of microwave power,irradiation time,the molar of fatty acid to glycerine and the amount of catalyst on the acid value were investigated.The optimum reaciton conditions were the molar ratio of fatty acid to glycerine1∶2,CaO1.0%,microwave power 450W,irradiation time20min.The reaction was9～13times faster and has more monoglyceride under microwave irradiation than conventional heating.