Preparation of 1-methyl-3-acetic acid imidazole ionic liquid and Application in Catalytic Synthesis of Ethyl Acetate

In this paper,one [SO4H] functionalized acidic ionic liquid was synthesized by using N-methyl imidazole,chloroacetic acid and sulfuric acid,and its structure was determined by IR and 1H NMR.The synthesis reaction of ethyl acetate catalyzed by the acidic ionic liquid was studied.The result shows that the isolated yield of ethyl acetate was 60.32% under the following conditions: molar percentage of catalyst relative to the reactants 5%,reaction temperature 80℃ and reaction time 2h.The catalytic activity maintains stable even the acidic ionic liquid was used 3 times.