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Process for producing 5-hydroxymethyl furfural

A hydroxymethylfurfural and process technology, applied in the field of solid catalysts, can solve the problems of low production efficiency, environmental pollution, and complicated preparation process of 5-hydroxymethylfurfural, and achieve simple and convenient preparation process, reduce environmental pollution, and achieve reaction transformation The effect of high rate and selectivity

Inactive Publication Date: 2017-06-30
NANKAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the shortcomings of traditional carbon-based solid acid and sulfonated graphene solid acid preparation process complex, easy to cause environmental pollution, and low production efficiency of 5-hydroxymethylfurfural

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method for sulfonated graphene solid acid, comprising the following steps:

[0029] (1) Under ice bath conditions, the concentrated sulfuric acid and the concentrated phosphoric acid are mixed uniformly according to the mass ratio of 9:1 to obtain a mixed acid solution;

[0030] (2) under the stirring of 600 r / min, in the mixed acid solution of 400 mass parts, add the graphite powder of 3 mass parts and the sodium nitrate of 1.5 mass parts respectively;

[0031] (3) Keeping the reaction temperature below 20°C, adding 9 parts by mass of potassium permanganate to the reaction mixture obtained in step (2), mixing evenly and gradually warming up to 50°C, reacting for 24 hours;

[0032] (4) Cool to room temperature, add 30 parts by mass of hydrogen peroxide solution, stir for 0.5h;

[0033] (5) The solid material obtained by centrifugal separation reaction was washed with dilute hydrochloric acid, water and ethanol respectively, and finally dried to obtain sul...

Embodiment 2

[0040] A preparation method for sulfonated graphene solid acid, comprising the following steps:

[0041] (1) Under ice bath conditions, the concentrated sulfuric acid and the concentrated phosphoric acid are mixed uniformly according to the mass ratio of 9:1 to obtain a mixed acid solution;

[0042] (2) under the stirring of 600 r / min, in the mixed acid solution of 400 mass parts, add the graphite powder of 3 mass parts and the sodium nitrate of 1.5 mass parts respectively;

[0043] (3) Keeping the reaction temperature below 20°C, adding 18 parts by mass of potassium permanganate to the reaction mixture obtained in step (2), mixing evenly and then gradually warming up to 50°C, reacting for 24 hours;

[0044] (4) Cool to room temperature, add 30 parts by mass of hydrogen peroxide solution, stir for 0.5h;

[0045] (5) The solid material obtained by centrifugal separation reaction was washed with dilute hydrochloric acid, water and ethanol respectively, and finally dried to obta...

Embodiment 3

[0052] A preparation method for sulfonated graphene solid acid, comprising the following steps:

[0053] (1) Under ice bath conditions, the concentrated sulfuric acid and the concentrated phosphoric acid are mixed uniformly according to the mass ratio of 9:1 to obtain a mixed acid solution;

[0054] (2) under the stirring of 600 r / min, in the mixed acid solution of 400 mass parts, add the graphite powder of 3 mass parts and the sodium nitrate of 1.5 mass parts respectively;

[0055] (3) Keeping the reaction temperature below 20°C, adding 9 parts by mass of potassium permanganate to the reaction mixture obtained in step (2), mixing evenly and gradually warming up to 50°C, reacting for 24 hours;

[0056] (4) Cool to room temperature, add 30 parts by mass of hydrogen peroxide solution, stir for 0.5h;

[0057] (5) The solid material obtained by centrifugal separation reaction was washed with dilute hydrochloric acid, water and ethanol respectively, and finally dried to obtain sul...

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PUM

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Abstract

The invention provides a preparation method for preparing sulfonated graphene solid acid and a process for producing 5-hydroxymethyl furfural through catalyzing fructose. By automatically synthesizing a sulfonated graphene solid acid catalyst, fructose can be effectively catalyzed to dehydrate to produce the 5-hydroxymethyl furfural. Compared with a traditional process, the method for preparing sulfonated graphene, which is provided by the invention, is simple and high in preparation efficiency. Meanwhile, the process provided by the invention can be used for catalyzing high-concentration fructose to convert into the 5-hydroxymethyl furfural by using low-dose sulfonated graphene solid acid, the conversion efficiency is high, and the economic feasibility of 5-hydroxymethyl furfural production is improved.

Description

technical field [0001] The invention relates to the field of solid catalysts, in particular to a preparation method of sulfonated graphene solid acid and a process for producing 5-hydroxymethylfurfural from fructose catalyzed by sulfonated graphene solid acid. Background technique [0002] Acidic catalysts have important applications in many fields such as energy, chemical industry and synthesis. Compared with liquid acid catalysts, solid acid catalysts have the advantages of being reusable and reducing equipment corrosion. There are many kinds of solid acid catalysts, among which carbon-based solid acid catalysts have attracted much attention because of their chemical inertness, surface hydrophobicity, good mechanical stability and thermal stability. A variety of carbon-based materials, including activated carbon and carbon-based materials formed by carbonization of biomass under hydrothermal conditions, can be used to prepare carbon-based solid acids. These carbon-based ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D307/46B01J27/02
CPCC07D307/46B01J27/02
Inventor 鞠美庭李维尊候其东王雁南木合塔尔·吐尔洪王晶
Owner NANKAI UNIV