Method for preparing ethyl sorbate through catalysis of supported p-toluenesulfonic acid

The invention provides a method for preparing ethyl sorbate through catalysis of supported p-toluenesulfonic acid. According to the preparation method disclosed by the invention, the p-toluenesulfonic acid can be recycled and reused, the catalytic efficiency is also improved, and the yield and purity of the product are improved. Meanwhile, the preparation method of the sorbic acid is simple, and the yield of the sorbic acid is relatively high. Therefore, the preparation method of the ethyl sorbate is suitable for industrial application. 本发明提供了一种负载型对甲苯磺酸催化制备山梨酸乙酯的方法。本发明的该制备方法不仅能够实现对甲苯磺酸的回收和重复利用，并且还提高了催化效率，改善产品的收率和纯度。同时，本发明的山梨酸制备方法简单、山梨酸收率较高。因此，本发明的山梨酸乙酯制备方法适合在产业中应用。