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新型固体超强酸催化合成三醋酸甘油酯
Catalytic Synthesis of Glycerol Triacetate with the Solid Ultra Strong Acid SO42-/Sb2O3/SiO2 Catalysts
【摘要】 研究了以冰醋酸和丙三醇为原料,自制的新型固体超强酸SO42-/Sb2O3/SiO2催化剂,考察了三醋酸甘油酯的最佳合成条件.实验确定的适宜工艺条件为:n(酸):n(醇)=1.0:2.0,催化剂用量为总量的2.0%,反应时间为2 h.酯化率在98%以上,用IR及折光率对产品进行确证.
【Abstract】 Glycerol triacetate was synthesized from glacial acetic acid and glycerol catalyzed by the new solid ultra strong acid SO42-/Sb2O3/SiO2 made by myself.The best synthesis condition of glycerol triacetate was investigated.The experiment results showed that the optimum reaction conditions were as follows:when the molar ratio of glacial acetic acid to glycerol was 1.0:2.0,the dosage of SO42-/Sb2O3/SiO2 was 2.0% and reactive time was 4 hour.The esterification yield reached to 98%.The product was characterized by refractive index and IR.
【关键词】 三醋酸甘油酯；
催化合成；
固体超强酸；
【Key words】 glycerol triacetate； catalytic synthesis； solid ultra strong acid；
【Key words】 glycerol triacetate； catalytic synthesis； solid ultra strong acid；
【基金】 广东省自然科学基金资助项目(7010338);广东省科学技术厅基金资助项目(2005B40703004)
- 【文献出处】 肇庆学院学报 ,Journal of Zhaoqing University , 编辑部邮箱 ,2009年02期
- 【分类号】TQ414
- 【被引频次】8
- 【下载频次】289