Catalyst for conversion of fructose to 5-hydroxymethylfurfural

A technology of hydroxymethyl furfural and a catalyst is applied in the field of converting fructose into 5-hydroxymethyl furfural, and can solve the problems of difficult recovery of catalyst phosphotungstic acid, unfriendly environment, high viscosity of ionic liquid, etc., and achieves a simple and practical loading method, Clarify economic and social benefits, the effect of mild reaction conditions

Inactive Publication Date: 2015-02-04
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages of this method: the viscosity of the ionic liquid is high, the price is expensive, and inorganic acids such as hydrochloric acid and sulfuric acid are relatively corrosive to equipment, and it is not easy for industrial production
The disadvantage of this method: the catalyst phosphotungstic acid is not easy to recover, and the product yield is not very high
[0005] In conclusion, the current preparation of 5-HMF from fructose still has problems such as unfriendly environment, low efficiency, and difficulty in industrialization.

Method used

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  • Catalyst for conversion of fructose to 5-hydroxymethylfurfural
  • Catalyst for conversion of fructose to 5-hydroxymethylfurfural
  • Catalyst for conversion of fructose to 5-hydroxymethylfurfural

Examples

Experimental program
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Effect test

Embodiment 1

[0025] In a 250mL round bottom flask, take 1mL of an aqueous solution of 0.05mol / L ionic liquid 1-(3-sulfonic acid)-propyl-3-methylimidazolium bisulfate, then add 50mL of liquid paraffin, ultrasonicate for 5min, and then Stand still for 5 minutes and repeat 5 times. Then add 50 mL of 0.3 mol / L methyltrichlorosilane in isooctane solution, stir at room temperature, and feed water vapor (0.1 L / min) at the same time, and react for 5 h. After suction filtration, the obtained solid was dried at 60°C for 24 hours to obtain a catalyst.

Embodiment 2

[0027] In a 250mL round bottom flask, take 1mL of an aqueous solution of 0.04mol / L ionic liquid 1-(3-sulfonic acid)-butyl-3-methylimidazolium bisulfate, then add 50mL of liquid paraffin, ultrasonicate for 5min, and then Stand still for 5 minutes and repeat 5 times. Then add 50 mL of 0.25 mol / L methyltrichlorosilane in isooctane solution, stir at room temperature, and feed water vapor (0.1 L / min) at the same time, and react for 5 h. After suction filtration, the obtained solid was dried at 60°C for 24 hours to obtain a catalyst.

Embodiment 3

[0029] In a 250mL round bottom flask, take 1mL of an aqueous solution of 0.08mol / L ionic liquid 1-(3-sulfonic acid)-propyl-3-methylimidazolium hydrogensulfate, then add 50mL of liquid paraffin, ultrasonicate for 5min, and then Stand still for 5 minutes and repeat 5 times. Then add 50 mL of 0.2 mol / L methyltrichlorosilane in isooctane solution, stir at room temperature, and feed water vapor (0.1 L / min) at the same time, and react for more than 5 hours. After suction filtration, the obtained solid was dried at 60°C for 24 hours to obtain a catalyst.

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Abstract

The invention relates to the field of heterogeneous catalysis, specifically to a catalyst for conversion of fructose to 5-hydroxymethylfurfural, a preparation method of the catalyst and a method for converting fructose to 5-hydroxymethylfurfural by the use of the catalyst. The catalyst provided by the invention is prepared from a sulfonic functionalized ionic liquid and methyltrichlorosilane. The prepared catalyst has advantages of high catalytic activity, mild reaction condition and reusability.

Description

technical field [0001] The invention relates to the field of heterogeneous catalysis, in particular to a catalyst for converting fructose into 5-hydroxymethylfurfural, a preparation method thereof and a method for converting fructose into 5-hydroxymethylfurfural using the catalyst. Background technique [0002] Due to the depletion of non-renewable resources (such as oil, coal and natural gas), the problem of energy shortage is imminent, and the development of renewable energy has become the main direction of research for researchers. my country is rich in renewable biomass such as trees and grasses, which contain a large amount of cellulose and lignin. If these biomass energy can be developed at low cost and high efficiency, it will be of great significance to my country's economic development. [0003] 5-Hydroxymethylfurfural (5-HMF) can be transformed into a series of important chemical products because of its active hydroxyl and aldehyde functional groups. For example, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02C07D307/46
Inventor 肖文军彭家建徐大鹏蒋剑雄厉嘉云白赢
Owner HANGZHOU NORMAL UNIVERSITY
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