The synthesized applied ionic liquid[HSO3-( CH2 )4-mim][HSO4]was as a catalyst to prepare glycerol ester through the esterification of gum rosin with glycerol.The products were characterized by FT-IR and NMR.The influence of reaction conditions on reaction results was also investigated.Under the optimum reaction conditions,i, e molar ratio of alcohol to acid (nOH∶ nCOOH ) 1.1: 1, reaction temperature 260 ℃, reaction time 7 h and dosage of the ionic liquid 0.03 ％ ( based on rosin weight), the obtained product had an acid number 9.6 mg/g, a softening point 90 ℃, a color number 4(Fe-Co method), and the yield reached 100.2 ％.Compared with the products prepared using traditional catalyst ZnO, this kind of products had better performances.%合成了1-磺酸丁基-3-甲基咪唑硫酸氢盐离子液体([HSO3-(CH2)4-mim][HSO4]),并以其为催化剂,催化松香和甘油酯化合成了松香甘油酯,用红外及核磁共振对产品进行了表征.详细探讨了各因素对酯化反应的影响,确定最佳反应条件为:醇酸比(nOH:nCOOH)为1.1:1,反应温度260℃.反应时间7 h,离子液体用量0.03%(占原料松香质量).在此条件下,产品酸值9.6 mg/g,软化点90℃,得率100.2%,色泽(Fe-Co法)4,与传统催化剂ZnO相比,产品性能更佳.
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