Bifunctional acidic catalysts and preperation methods of furfural via catalyzing hemicellulose or xylose

Abstract

A bifunctional acidic catalyst and a preparation method of furfural via catalyzing hemicellulose or xylose are provided. The bifunctional acidic catalyst includes choline chloride, Brønsted acid, and Lewis acid in a molar ratio of 1:1:(1-4), and the bifunctional acidic catalyst is in a deep eutectic state. The method includes adding hemicellulose or xylose and the bifunctional acidic catalyst as an aqueous phase into a reactor, followed by adding an oil phase extractant, generating furfural in the reactor through catalytic dehydration and hydrolysis reaction, and continuously extracting the furfural from the aqueous phase by the oil phase extractant during the reaction process until the reaction is ended. The method can reduce the activation energy required for the reaction and increase the yield of furfural. Both the aqueous phase and the catalyst may be recycled in the preparation process, which can reduce energy consumption and production cost.

Dependencies are inferred from the claim text.