Method for preparing 5-hydroxymethyl furfural from fructose source biomass

A technology of hydroxymethyl furfural and biomass, which is applied in the field of two-step preparation, can solve problems such as distance in industrial language, and achieve the effects of reducing deactivation, large-scale industrialization prospects and strategic significance, and high conversion rate and yield.

Inactive Publication Date: 2009-05-20
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

In terms of technology, their experiments did not combine the characteristics of biolo

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  • Method for preparing 5-hydroxymethyl furfural from fructose source biomass

Examples

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Embodiment 1

[0028] Preparation of Jerusalem artichoke powder

[0029] The Jerusalem artichoke tubers are dried in the sun, pulverized into powder by a pulverizer, and made into Jerusalem artichoke powder.

Embodiment 2

[0031] Preparation of inulin

[0032] After dissolving the Jerusalem artichoke powder prepared in Example 1 with 55°C water to make a solution with a weight concentration of 10%, adjust its pH value to 6.5 by 1M NaOH and 1M HCl, and prepare by adding 10000U of inulinase per liter Jerusalem artichoke powder enzymatic hydrolysis reaction solution (inulinase enzyme activity is defined as the amount of enzyme needed to hydrolyze the substrate to produce 1 micromole of fructose per minute), react in a reactor at 45°C for 9 hours, and detect by HPLC. After the enzymolysis reaction is complete, Form fructified Jerusalem artichoke powder liquid (glucose weight content 0.9%, fructose weight content 3.7%), through spray drying, make fructified inulin.

Embodiment 3

[0034] Preparation of inulin

[0035] After dissolving the Jerusalem artichoke powder prepared in Example 1 with 70°C water to make a solution with a weight concentration of 20%, adjust its pH value to 4.2 by 1M NaOH and 1M HCl, and prepare the Jerusalem artichoke at a rate of adding 50000U of inulinase per liter Powder enzymolysis reaction solution (inulinase activity is defined as the amount of enzyme needed to hydrolyze the substrate to produce 1 micromole of fructose per minute), react in the reactor at 70°C for 5 hours, and detect by HPLC. After the enzymolysis reaction is complete, the formation Fructified Jerusalem artichoke powder liquid (1.4% by weight of glucose, 7.4% by weight of fructose) is spray-dried to make fructified inulin.

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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...

Claims

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Application Information

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IPC IPC(8): C07D307/48C12P17/04
Inventor 杜昱光刘启顺曹海龙白雪芳
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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