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Method for converting biomass into 5-hydroxymethyl furfural

A technology of hydroxymethyl furfural and biomass, applied in the field of biomass utilization, can solve problems such as difficult and efficient utilization, complex fiber structure, etc., and achieve the effects of strong designability, strong penetration and strong solubility

Inactive Publication Date: 2017-12-12
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wood is a cellulosic biomass resource and a renewable green resource. It is abundant in the world and has great utilization value. However, due to its complex fiber structure, it is difficult to be efficiently utilized.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Solid acid activation: wash with distilled water first, remove impurities, then add a certain amount of NaOH, stir for 3 hours, wash with distilled water until pH = 6~7, then soak the solid acid with hydrochloric acid for 48 hours, and finally wash with distilled water to pH=6~7, filter and dry.

[0039] (2) Microwave reaction and 5-HMF quantification: with [Bmim]Cl ionic liquid as solvent and D001-cc as catalyst, biomass, catalyst and solvent were mixed in a microwave digestion tank at a mass ratio of 1:1:20, Microwave heating at 100 °C for 5 min; after the reaction, take out the digestion tank and add 20-40 mL of water to stir evenly, then let it stand for 2 h, take the supernatant to 100 mL, measure the content of 5-HMF in the reaction liquid, And calculate the final yield as 3.21%.

[0040] (3) Catalytic system recovery: Add 50-80 mL of ethyl acetate to the reaction solution to extract 5-HMF from the mixture. After the extraction, dry the mixture in a vacuum ov...

Embodiment 2

[0042] (1) Solid acid activation: wash with distilled water first, remove impurities, then add a certain amount of NaOH, stir for 3 hours, wash with distilled water until pH = 6~7, then soak the solid acid with hydrochloric acid for 48 hours, and finally wash with distilled water to pH=6~7, filter and dry.

[0043] (2) Microwave reaction and 5-HMF quantification: with [Bmim]Cl ionic liquid as solvent and D001-cc as catalyst, biomass, catalyst and solvent were mixed in a microwave digestion tank at a mass ratio of 1:1:20, Microwave heating at 160 °C for 40 min; after the reaction, take out the digestion tank and add 20-40 mL of water to stir evenly, then let it stand for 2 h, take the supernatant to 100 mL, measure the content of 5-HMF in the reaction liquid, And calculate the final yield to be 18.81%.

[0044](3) Catalytic system recovery: Add 50-80 mL of ethyl acetate to the reaction solution to extract 5-HMF from the mixture. After the extraction, dry the mixture in a vacuu...

Embodiment 3

[0046] (1) Solid acid activation: wash with distilled water first, remove impurities, then add a certain amount of NaOH, stir for 3 hours, wash with distilled water until pH = 6~7, then soak the solid acid with HCl for 48 hours, and finally wash with distilled water to pH=6~7, filter and dry.

[0047] (2) Microwave reaction and 5-HMF quantification: with [Bmim]Cl ionic liquid as solvent and D001-cc as catalyst, biomass, catalyst and solvent were mixed in a microwave digestion tank at a mass ratio of 1:1:20, Microwave heating at 140 °C for 25 min; after the reaction, take out the digestion tank and add 20-40 mL of water to stir evenly, then let it stand for 2 h, take the supernatant and dilute it to 100 mL, measure the content of 5-HMF in the reaction solution, And calculate the final yield to be 20.74%.

[0048] (3) Catalytic system recovery: Add 50-80 mL of ethyl acetate to the reaction solution to extract 5-HMF from the mixture. After the extraction, dry the mixture in a va...

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PUM

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Abstract

The invention discloses a method for converting biomass into 5-hydroxymethyl furfural, and belongs to the field of biomass utilization. The method comprises the following steps: performing acidizing on solid acid, mixing biomass, a catalyst and a solvent in a microwave digestion tank in certain mass ratio by taking ionic liquid as the solvent and the solid acid as the catalyst, recovering 5-HMF through ethyl acetate after microwave heating reaction is finished, and drying an obtained mixture and then performing recovering, so as to obtain solid acid and ionic liquid. The solvent ionic liquid and the catalyst solid acid (acidic ion exchange resin) adopted in the method have the characteristics of green, high efficiency and recyclability, the microwave heating mode adopted has the characteristics of high penetrability, high speed in heat transfer and high uniformity in heating of materials, the whole system has the characteristics of high efficiency, low energy consumption, low cost, high convenience in operation, green and sustainability, and the method converting biomass into 5-HMF is novel.

Description

technical field [0001] The invention belongs to the field of biomass utilization, and relates to a method for converting biomass into 5-hydroxymethylfurfural (5-HMF) by utilizing a microwave-solid acid / ionic liquid system. Background technique [0002] With the rapid development of society, the sustainable development of environmental economy has become the focus of attention. Wood is a cellulosic biomass resource and a renewable green resource. It is abundant in the world and has great utilization value. However, due to its complex fiber structure, it is difficult to be efficiently utilized. Therefore, pretreatment of cellulose resources, destroying its crystallization region and reducing crystallinity before use is of great significance for the dissolution and development of cellulose. [0003] In addition to being able to convert biomass energy into reducing sugars, more research is focused on its ability to be converted into platform compounds. As an important platform...

Claims

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Application Information

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IPC IPC(8): C07D307/46
CPCC07D307/46Y02P20/10
Inventor 周存山张磊余筱洁鲍鑫捷马海乐高献礼任晓锋杨宏朋江昊南
Owner JIANGSU UNIV