袁冰,刘天,于世涛

• 1:青岛科技大学化学与分子工程学院
• 2:青岛科技大学化工学院

摘要(Abstract)：

设计筛选了一系列不同阳离子和阴离子的杂多类离子液体,并通过调整阴阳离子的摩尔比控制其酸性以及在甘油乙酯化制备三醋酸甘油酯反应中的催化活性。采用FT-IR、1H-NMR对优选催化剂进行了表征,用正丁胺电位滴定法研究了催化剂的阴阳离子对其酸性的影响。详细研究了原料摩尔比、催化剂用量和反应时间等对三醋酸甘油酯产物收率的影响。在酸醇摩尔比6:1,催化剂H2[TEAPS]PW12O40用量为甘油摩尔数的0.026%,反应温度110 oC,反应时间8 h的最佳工艺条件下,甘油转化率超过99%,三醋酸甘油酯选择性超过98%,催化剂可以方便的回收并循环使用。

关键词(KeyWords)： 杂多类离子液体;甘油;三醋酸甘油酯;催化

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(21106074);; 青岛市应用基础研究(12-1-4-3-(22)-jch)

作者(Author): 袁冰,刘天,于世涛

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