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Method for preparing 5-hydroxymethylfurfural

A technology of hydroxymethylfurfural and C2H5, which is applied in the field of preparation of 5-hydroxymethylfurfural, can solve the problems of unfriendly environment, unacceptable cost and low selectivity of the catalytic system, and achieve environmental friendliness, low price and high selectivity. Improved effect

Inactive Publication Date: 2010-12-08
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the high price of alkylimidazole and alkylpyridine-type ionic liquids, the cost of applying them to large-scale production is unacceptable
[0005] Although a variety of methods for converting biomass sugar sources to prepare HMF have been reported, the existing catalytic systems still have disadvantages such as environmental unfriendliness, low selectivity, and high cost.

Method used

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  • Method for preparing 5-hydroxymethylfurfural
  • Method for preparing 5-hydroxymethylfurfural

Examples

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Effect test

Embodiment 1

[0028] Heat 1g of trimethylamine hydrochloride and 0.5g of fructose to 110°C in a preheating dissolving system, and react for 70 minutes (min). After the reaction, the reaction mixture is lowered to room temperature and diluted with water. The method of liquid phase analyzes its productive rate, chromatographic condition: C 18 Column, column temperature 35°C, methanol at volume ratio 1:4 as mobile phase, flow rate 0.6ml / min, UV detector 284nm. Yield 70.5%.

Embodiment 2

[0030] Heat 1g of dimethylamine hydrochloride and 0.6g of fructose to 120°C in a preheating dissolving system, and react for 70 minutes. After the reaction, the reaction mixture is lowered to room temperature and diluted with water. The method determined that the yield was 69.9%.

Embodiment 3

[0032] Heat 1g of diethylamine hydrochloride and 0.55g of fructose in a preheating dissolving system to 120°C and react for 70 minutes. After the reaction, the reaction mixture is lowered to room temperature and diluted with water. The method determined that the yield was 61.9%.

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Abstract

The invention discloses a method for preparing 5-hydroxymethylfurfural (HMF), which comprises the following steps of: mixing a biomass sugar source and an ammonium salt which can form a low eutectic mixture together with the biomass sugar source, reacting the mixture at the temperature of between 60 and 180 DEG C, and cooling the reaction product to room temperature after the reaction is finishedto obtain a target product. In order to ensure that the catalytic effect of the ammonium salt is not affected by temperature, a catalyst can be added to promote the reaction. The highest yield of themethod can reach 70 percent. The method has the advantages of high selectivity, mild condition, high reaction speed, low cost, simple process, environment friendliness, no need of catalyst, environment-friendly process and the like. The invention provides a new method for industrially producing the HMF from the biomass sugar.

Description

technical field [0001] The invention relates to a preparation method of 5-hydroxymethylfurfural, in particular, the low eutectic mixture formed by ammonium salt and sugar is used to efficiently convert sugar into 5-hydroxymethylfurfural. Background technique [0002] At present, oil resources are the main energy source, but oil resources will be exhausted one day in the future, so it is urgent to find its substitutes. Starting from renewable biomass, through efficient biological and chemical transformation, organic chemical intermediates with important application prospects are obtained, which provides a reasonable way for the effective use of biological resources and the search for substitutes for petrochemical resources. effective measures for a problem. [0003] 5-Hydroxymethylfurfural (HMF) is an important organic chemical intermediate. Many useful chemicals can be synthesized from it. For example, it can be converted into 2,5-furandicarboxylic acid by oxidation, 2, 5-...

Claims

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Application Information

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IPC IPC(8): C07D307/46
CPCC07D307/46C07D307/50
Inventor 牟新东张新志曹泉张英伟郭星翠王灵清
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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