Method for preparing 5-hydroxymethyl furfural from fructose source biomass

Abstract

The invention relates to a method for preparing 5-hydroxymethyl furfural (HMF), an important platform compound, by directly using a fructose source biomass. The method for preparing the HMF is mainly divided into two steps: firstly, a monosaccharide solution is obtained by the transformation of polysaccharide in the fructose source biomass; under the condition that catalysts such as protonic acid, cation exchange resin, zeolite, Lewis acid and the like are added in a system of an aqueous-organic phase to exchange, a salt for salting out and stabilizing the HMF is added in the aqueous phase and the HMF is prepared by heating at proper temperature.

Description

technical field

[0001] The present invention relates to a two-step method for preparing 5-hydroxymethylfurfural (HMF) from fructose-derived biomass. Background technique

[0002] 5-Hydroxymethylfurfural (HMF) is an important intermediate compound with multiple uses. It can remove the oxygen atom in the molecule through a specific catalyst to obtain 2,5-dimethylfuran (DMF). It is a relatively Fuel ethanol has a higher octane number, higher boiling point, and more stable biofuel in the air; its hydroxyl group can be oxidized to aldehyde to obtain 2,5-diformylfuran, which is used as an important drug intermediate, polymer unit Body, antibacterial agent, etc.; can reduce its aldehyde group to obtain 2,5-dimethylolfuran, or oxidize hydroxyl and aldehyde group to carboxyl group to obtain 2,5-dicarboxyfuran, and can convert hydroxyl and aldehyde group into amine These are all important chemical products and polymer monomers that can replace petroleum sources; HMF can also be furth...

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