固体碱催化合成三油酸甘油酯的研究

STUDY ON SYNTHESIS OF GLYCERYL TRIOLEATE CATALYZED BY SOLID BASE

以固体碱NaOH-γ-Al_2O_3为催化剂通过真空脱水催化甘油和油酸酯化反应合成了三油酸甘油酯。研究了反应温度、催化剂用量以及反应时间对油酸转化率的影响。结果表明,当甘油与油酸物质的量比为1∶3.3,催化剂用量为油酸质量的0.3%,反应温度230℃,反应时间6 h时,三油酸甘油酯的转化率最高,可达99.1%。

Glycerol trioleate was synthesized by esterification of glycerol and oleic acid catalyzed by solidbase NaOH-γ-Al2O3,and the influence factors on reaction conversion rate were studied.The best conditions were obtained:molar ratio of oleic acid∶glycerol 1∶3.3,the amount of catalyst 0.3% of oleic acid,the reaction temperature 230℃,the reaction time 6 h,and the conversion rate of glycerol trioleate can reach more than 99.1%.