将酸性离子液体1-丁基磺酸-3-甲基咪唑对甲苯磺酸盐（[（CH₂）₄SO₃HMIm]TS）分别通过凝胶包埋、浸渍、嫁接的方法固定到层析SiO₂上，考察其催化合成二甘醇二苯甲酸酯（DEDB）的效果。研究发现凝胶包埋法制备的催化剂NJ-4.0效果最好。通过实验确定了最佳工艺条件为：反应温度为165℃，反应时间为4 h，n（苯甲酸）：n（二甘醇）=2.2：1（二甘醇为0.1 mol），催化剂NJ-4.0质量为二甘醇质量的8%，该条件下合成DEDB的产率为86.2%。

Acid ionic liquid 1-butylsulfonate-3-methyl imidazole p-tosylate ([(CH₂)₄SO₃HMIm]TS) is immobilized on the chromatography SiO₂ by sol-gel,impregnation and grafting methods respectively.Its catalytic performance in the synthesis of diethylene glycol dibenzoate (DEBD) is investigated.The results indicate that the catalyst NJ-4.0 prepared by sol-gel method shows the best catalytic efficiency.The optimized synthetic conditions for DEDB are gained through experiments as follows:reaction temperature is at 165℃,reaction time lasts for 4 h,n(benzoic acid):n(diethylene glycol)=2.2:1,the mass ratio of catalyst NJ-4.0 to diethylene glycol is 8wt%.Under the optimal conditions,the yield of DEDB can reach 86.2%.

倪潇(1996-),女,本科生,研究方向为工业催化,nixiao_love@njtech.edu.cn