Preparation method of n-butyl benzoate

The invention discloses a preparation method of n-butyl benzoate. The preparation method mainly comprises the following steps of: taking benzoic acid as a raw material, enabling the benzoic acid to react with n-butyl alcohol under the existence of a solid acid catalyst to obtain a crude product, then neutralizing the crude product by using solid alkali, and then rectifying and purifying to obtain the finished product, namely the n-butyl benzoate. The preparation method disclosed by the invention is simple, convenient and stable in operation process, little in three-waste pollution and suitable for industrial production.