Preparation method of ethyl acetate

The invention relates to a preparation method of ethyl acetate, and aims to mainly solve the problems that the smaller pore size of catalyst carriers is not conducive to internal diffusion of heteropoly acid and results in low catalyst activity, and the yield of ethyl acetate is low in the prior art. The method of the invention adopts a technical scheme composed of: taking acetic acid and ethanol as raw materials, and under the conditions of a molar ratio of acetic acid to ethanol of 1:1-1:10, a reaction temperature of 30-150DEG C, a reaction time of 0.5-10 hours, and a catalyst dosage accounting for 0.1-20wt% of the raw materials, contacting the raw materials with the catalyst for reaction to generate ethyl acetate. Specifically, the catalyst comprises the following components by weight: a) 10-50% of silicotungstic heteropoly acid; and b) 50-90% of an SiO2 carrier that is treated by a basic solution with a concentration of 0.001-5 mol/L. The technical scheme of the invention well solves the problems, and can be used in the industrial production of ethyl acetate.