The 4-methoxy-phenylhydroxy-acetic acid was synthesized by the carbonyl addition reaction of 4-methoxybenzaldehyde.

Taking the synthesis of butyl acetate by the catalytic esterification of acetic acid and butanol as a probe reaction, a series of studies on the preparation of the catalyst and its activity was made.

The optimal reaction conditions of degrading plant cellulose with acetic and hydrochloric acid were discussed by cross experiments.