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Method for preparing 5-hydroxymethyl furfural by utilizing biomass as raw material

A biomass raw material, hydroxymethylfurfural technology, applied in the direction of organic chemistry, can solve the problems of low yield and high energy consumption, and achieve the effect of high yield, low energy consumption of separation and high industrialization prospect

Inactive Publication Date: 2012-08-01
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has a wide range of sources of raw materials and low prices; the catalyst is cheap, has low toxicity, and has low corrosion to equipment; it can effectively overcome the disadvantages of high HMF preparation cost, high energy consumption, and low yield in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Measure 40ml of tetrahydrofuran, 4ml of water, weigh 0.26g of sodium bisulfate, and 0.8g of zinc sulfate to make a reaction solution; weigh 1g of cellulose and add to the above mixed solution. The above mixture was added into a batch reactor with a capacity of 100ml, reacted at 160°C for 60min, and the product was taken out, and the molar yield of HMF was measured to be 53mol% by HPLC.

Embodiment 2

[0022] Measure 40ml of n-propanol, 2ml of water, then weigh 0.3g of potassium bisulfate, 0.40g of sodium sulfate, and 0.16g of iron sulfate to make a mixed solution; weigh 15g of cellulose and add to the above mixed solution. The above mixture was added into a batch reaction kettle with a capacity of 100ml, reacted at 130°C for 300min, the product was taken out, and detected by HPLC, the yield of HMF was measured to be 28mol%.

Embodiment 3

[0024] Measure 40ml of isopropanol, 20ml of water, then weigh 1.5g of ammonium bisulfate, 2.0g of potassium sulfate, and 1.0g of aluminum sulfate to make a mixed solution; weigh 5g of cellulose and add to the above mixed solution. The above mixture was added into a batch reaction kettle with a capacity of 100ml, reacted at 250°C for 5min, the product was taken out, and detected by HPLC, the yield of HMF was measured to be 37mol%.

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Abstract

The invention provides a method for efficiently preparing 5-hydroxymethyl furfural (HMF) utilizing biomass widely existing in a natural world as a raw material. The method includes the following steps: utilizing a two-phase system composed of low-boiling point organic matter and water, adopting acid salt of sulfuric acid and sulfuric acid metal normal salt as a catalyst in synergy mode to form a catalyst system, adding the biomass raw material capable of being degraded to hexose to a reaction system and preparing the HMF by reaction. The reaction process of the method has high HMF selectivity. The catalyst is low in price, mild in operation condition, simple in process and low in separation energy consumption. The biomass raw material with a wide source is utilized as the reaction raw material, preparation of biomass-based chemical and alternative fuel with the biomass as the raw material can be favorably promoted, and the method has high industrialized prospect.

Description

technical field [0001] The invention relates to the technical field of biomass chemicals, in particular to a two-phase reaction system composed of an organic solvent and water, using the acid salt of sulfuric acid and the normal salt of sulfuric acid as a catalyst to catalyze the utilization of biomass raw materials for one-step efficient production of Method for taking 5-hydroxymethylfurfural (HMF). technical background [0002] The use of biomass and other renewable resources to produce alternative liquid fuels and chemicals is an effective way to solve the environmental problems caused by the shortage of fossil resources and the combustion of fossil fuels, and has become a research hotspot at home and abroad. 5-Hydroxymethylfurfural (HMF) is an important platform compound, which can be used as a raw material to prepare 2,5-dimethylfuran, 2,5-furandicarboxylic acid and other chemicals with important application value, or After subsequent steps such as carbon chain growth ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D307/50
Inventor 马隆龙石宁王铁军刘琪英张琦章青
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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