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A method for preparing 2,5-furandicarboxaldehyde by degrading carbohydrate compounds

A technology for furandicarboxaldehyde and compound, applied in the field of industrial catalysis, can solve the problems of high price, difficult separation of HMF, and technical difficulties in separation and purification have not been effectively solved, and achieves the effects of mild reaction conditions, mild oxidization, and cost reduction.

Active Publication Date: 2022-08-09
徐新杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the preparation process of HMF, its separation and purification technical difficulties have not been effectively resolved, resulting in a certain degree of limitation in the research and industrial application of related derivatives
Therefore, it is an effective way to solve this problem by synthesizing HMF oxidized derivatives directly from sugar compounds such as fructose, glucose, and sucrose through a "one-pot method". However, the separation of raw material HMF is difficult and expensive, making 2,5- Furandicarbaldehyde is expensive to produce

Method used

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  • A method for preparing 2,5-furandicarboxaldehyde by degrading carbohydrate compounds

Examples

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Effect test

Embodiment 1

[0020] A method for preparing 2,5-furandicarboxaldehyde by degrading carbohydrate compounds, comprising the following steps:

[0021] 1) In parts by weight, 30 parts of glucose, 0.3 parts of catalyst ceria, 1 part of sodium dodecylbenzene sulfonate and 100 parts of DMF are placed in the reactor, and after sealing, the stirring is uniformly formed at a speed of 300r / min. mixture;

[0022] 2) Continue to feed air into it under the stirring condition, keep the pressure in the reactor to be 4MPa, the temperature is 80 ℃, stop the reaction after 1 hour of reaction, naturally cool to room temperature, and obtain 2,5-furandicarbaldehyde as the main component of the mixture.

[0023] The product was analyzed by high performance liquid chromatography, and the following results were obtained: the conversion rate of glucose was 100%, and the yield of 2,5-furandicarbaldehyde was 86%.

Embodiment 2

[0025] A method for preparing 2,5-furandicarboxaldehyde by degrading carbohydrate compounds, comprising the following steps:

[0026] 1) In parts by weight, 20 parts of glucose, 0.2 part of catalyst ceria, 1 part of anionic polyacrylamide and 100 parts of THF were placed in the reactor, and after sealing, stirred at a speed of 300r / min to form a mixed solution;

[0027] 2) Continue to feed air into it under the stirring condition, keep the pressure in the reactor to be 3MPa, and the temperature is 70 ° C, stop the reaction after 2 hours of reaction, naturally cool to room temperature, and obtain 2,5-furandicarbaldehyde as the main component of the mixture.

[0028] The product was analyzed by high performance liquid chromatography, and the following results were obtained: the conversion rate of glucose was 100%, and the yield of 2,5-furandicarbaldehyde was 82%.

Embodiment 3

[0030] A method for preparing 2,5-furandicarboxaldehyde by degrading carbohydrate compounds, comprising the following steps:

[0031] 1) In parts by weight, 40 parts of glucose, 0.5 part of catalyst ceria, 2 parts of sodium lauryl sulfate and 80 parts of acetone are placed in the reactor, and after sealing, stirring at a speed of 300r / min forms a mixed solution ;

[0032] 2) Continue to feed air into it under the condition of stirring, keep the pressure in the reactor to be 5MPa, and the temperature is 70 ° C, stop the reaction after 2 hours of reaction, and naturally cool to room temperature, to obtain 2,5-furandicarbaldehyde is the main component of the mixture.

[0033] The product was analyzed by high performance liquid chromatography, and the following results were obtained: the conversion rate of glucose was 100%, and the yield of 2,5-furandicarbaldehyde was 84%.

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Abstract

The invention relates to a method for preparing 2,5-furandicarboxaldehyde by degrading saccharide compounds, comprising the following steps: 1) by weight, 20-40 parts of sucrose or glucose, 0.2-0.5 parts of catalyst, 1-2 parts of 80-100 parts of dispersant and 80-100 parts of organic solvent are placed in the reaction kettle, and after sealing, stirring is uniform to form a mixed solution, and the catalyst is ceria with a particle size of less than 100 nm; The pressure in the reaction kettle is 2~5MPa, the temperature is 70~90℃, the reaction is stopped after 1~2 hours of reaction, and it is naturally cooled to room temperature to obtain a mixed solution with 2,5-furandicarboxaldehyde as the main component. The reaction conditions of the invention are mild, high temperature and high pressure are not required, the yield of 2,5-furandicarboxaldehyde is high, and the complicated separation steps of HMF are avoided at the same time, the cost is reduced, and the goal of green chemistry is more complied with.

Description

technical field [0001] The invention relates to a method for preparing an intermediate 2,5-furandicarbaldehyde, in particular to a method for preparing 2,5-furandicarbaldehyde by degrading carbohydrate compounds, and belongs to the technical field of industrial catalysis. Background technique [0002] With the continuous consumption of fossil resources and the increasingly prominent environmental problems, the use of biomass raw materials to replace fossil resources to prepare bulk chemicals, fine organic intermediates and polymer materials has become one of the research hotspots in the field of biomass-based development and utilization in recent years. [0003] 5-Hydroxymethylfurfural (5-HMF), as one of the biomass-based platform compounds, is also an important intermediate for the synthesis of various fine chemicals and furan-based polymers, which can be obtained from carbohydrates such as glucose, fructose and cellulose. . 2,5-Furandicarbaldehyde (DFF) is an important do...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D307/46
CPCC07D307/46Y02E60/10
Inventor 徐新杰郑素娟
Owner 徐新杰