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Method for preparing 5-hydroxymethylfurfural

A kind of hydroxymethyl furfural, a single technology, applied in the field of preparing 5-hydroxymethyl furfural (HMF), can solve problems such as instability of ion exchange resin, achieve good thermal stability and acid stability, avoid corrosion and environmental pollution , The effect of preparation process environmental protection

Inactive Publication Date: 2013-02-06
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They also investigated ion-exchange resins and found that good reaction selectivity can be obtained at low temperatures, but because ion-exchange resins are unstable at high temperatures, they cannot replace hydrochloric acid as catalysts for high-temperature reactions.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: the preparation of catalyst PZS microsphere

[0031] Dissolve 0.2 g of hexachlorotripolyphosphazene and 0.43 g of bisphenol S in 50 mL of acetone, sonicate at 200 W for 10 min to make the raw materials evenly dissolve in the solvent, then add 1.82 g of trioctylamine, continuously sonicate at room temperature for 2 h, and then The solvent was removed by centrifugation at a rate of 6000 rpm to obtain solid particles, which were washed 3 times with acetone, ethanol and deionized water repeatedly, 45 o C dried in a vacuum oven for 24 h to obtain a solid PZS polymer microsphere catalyst.

Embodiment 2

[0032] Embodiment 2: preparation of catalyst PZS nanotube (nanotube, NT)

[0033] Dissolve 0.2 g of hexachlorotripolyphosphazene and 0.50 g of bisphenol S in 50 mL of tetrahydrofuran, ultrasonicate at 200 W for 15 min to make the raw materials evenly dissolve in the solvent, then add 0.52 g of triethylamine, 35 o C was continuously sonicated for 3 h, and then centrifuged at 8000 rpm to remove the solvent to obtain solid particles, which were washed 3 times with acetone, ethanol and deionized water repeatedly, 45 o C dried in a vacuum oven for 24 h to obtain a solid PZS polymer nanotube (PZS NT) catalyst.

Embodiment 3

[0034] Embodiment 3: the preparation of catalyst PZAF microsphere

[0035] Dissolve 0.2 g of hexachlorotripolyphosphazene and 0.68 g of bisphenol AF in 50 mL of acetonitrile, ultrasonicate at 200 W for 10 min to make the raw materials evenly dissolve in the solvent, then add 0.95 g of tributylamine, 40 o C was continuously sonicated for 8 h, and then centrifuged at 8000 rpm to remove the solvent to obtain solid particles, which were washed 3 times with acetone, ethanol and deionized water, 45 o C dried in a vacuum oven for 24 h to obtain a solid PZAF polymer catalyst.

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Abstract

The invention belongs to the technical field of productions of chemical products, in particular to a method for preparing 5-hydroxymethylfurfural. The method includes steps of taking a macromolecular polyphosphazene polymer matrix as a solid acid type heterogeneous catalyst, taking monosaccharide, disaccharide or polysaccharide as raw materials, reacting for 5minutes to 24 hours in single-component solvent or double-component solvent such as dimethyl sulfoxide, acetonitrile, methyl isobutyl ketone, water and the like at the temperature of 25-120 DEG C under normal pressure, and finally producing the 5-hydroxymethylfurfural efficiently. The method has the advantages that conversion efficiency of raw material is high, HMF selectivity is good, operation conditions are mild, reaction speed is high, the processing is simple and environment-friendly, the catalyst is easy to prepare and the like, corrosion to equipment and environment pollution due to common liquid strong-acid homogenous catalysts are avoided, and a new way is developed for preparing commodity chemicals and substitute fuels according to regenerative biological resources.

Description

technical field [0001] The invention belongs to the technical field of chemical production, and in particular relates to a method for preparing 5-hydroxymethylfurfural (HMF). Background technique [0002] Petroleum and other fossil resources in the world are limited and increasingly scarce, which seriously threatens the entire petroleum-based chemical industry today and affects the development of the national economy. From the perspective of green chemistry, with the goal of achieving sustainable development, it is generally believed that plant-based biomass resources will be an ideal choice for human beings in the future. Starting from renewable biological resources, through efficient biological and chemical transformation, obtaining organic chemical intermediates with important application prospects, and seeking a reasonable and effective way for the utilization of biomass resources and the substitution of petrochemical products is the solution to this problem. effective ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D307/46
Inventor 沈伟黄镇汪长春潘元佳徐华龙
Owner FUDAN UNIV
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