Patent ID: 11873286

Abstract:
A method for preparing FDCA with furfural as a raw material includes (1) pretreatment of the furfural: subjecting the furfural and an alcohol compound to an acetalization reaction under catalysis of an acidic ion resin to obtain an acetal compound of the furfural with the alcohol compound; (2) under stirring, adding the acetal compound dropwise to a mixed liquid of an acylation reagent and an ionic liquid (IL) to allow a reaction for 1 h to 2 h, adding a catalyst to continue the reaction for 3 h to 5 h, and subjecting a resulting reaction system to a post-treatment to obtain 5-acylfurfural; and (3) mixing the 5-acylfurfural with hydrogen peroxide, adding a catalyst to allow an oxidation reaction, and after the oxidation reaction is completed, subjecting a product to washing and recrystallization to obtain a white crystal, which is the FDCA.