根据离子液体阴阳离子可以选择的特性,采用两步法合成1-(4-磺酸基)丁基-3-甲基咪唑硫酸氢盐等16种离子液体.通过对这16种离子液体来替代浓硫酸作为丙酸甲酯合成催化剂的试验,得出结论:1-(4-磺酸基)丁基-3-甲基咪唑硫酸氢盐离子液体催化反应速度快,在20 min内使丙酸甲酯浓度达到66.12%,并使最终反应体系中丙酸甲酯的浓度最高(达到74.67%),其催化效果最好.“,”According to the selecting properties of ionic liquids,1-(4- sulfonic acid) butyl-3- methyl imidazole hydrogen sulfate and other fifteen kinds of ionic liquids were synthesized by the two step synthestic method. Using the sixteen ionic liquid\'s instead of concentrated sulfuric acid as catalysts for the synthesis of methyl propionate, the researches showed that reaction speed of 1-( 4- sulfonic acid) butyl-3- methyl imidazole hydrogen sulfate saltionic liquids was the fastest, it could make the concentration of methyl propionate reach 66.12% within 20 min,the concentrations of methyl propionate was the highest,and reach 74.67%,so its catalytic effect was the best in the final reaction system.