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A method for converting hexose into pentose and formic acid

A technology of applying hexose and hexose in the field of biomass sugar production can solve the problems of high production cost, environmental pollution, long production cycle, etc., and achieve the effects of cheap, simple and diverse solvent system and simple operation.

Active Publication Date: 2022-06-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The yield of pentose sugar in the acid hydrolysis method is relatively high, but because this method needs to use acid, it has a certain degree of corrosion to the production equipment, and it will also cause pollution to the environment
The enzymatic hydrolysis method has a high yield of pentose sugar and is environmentally friendly, but the production cycle is long, the production cost is high, and it is not conducive to industrial production
The hydrothermal method does not add chemicals and has good environmental friendliness, but the yield of pentoses is not high, and the hydrolyzate also contains oligosaccharides

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for converting hexoses into pentoses and formic acid, comprising the steps of:

[0026] Add 0.02 parts by mass of fructose, 0.002 parts by mass of artificial zeolite, 0.95 parts by mass of gamma-butyrolactone and 0.05 parts by mass of water into an autoclave, react at 170°C for 1.5h, cool and filter after the reaction, and obtain Reaction solution of sugar, arabinose and formic acid.

[0027] After testing, the yield of xylose in this embodiment is 74%, the yield of arabinose is 18%, the yield of formic acid is 94%, and the conversion rate of fructose is 96%.

Embodiment 2

[0029] A method for converting hexoses into pentoses and formic acid, comprising the steps of:

[0030] Add 0.05 parts by mass of glucose, 0.005 parts by mass of artificial zeolite and 1 part by mass of methanol into an autoclave, react at 180°C for 2 hours, cool and filter after the reaction, and obtain a reaction solution containing xylose, arabinose and formic acid.

[0031] After testing, in this embodiment, the yield of xylose is 29%, the yield of arabinose is 14%, the yield of formic acid is 44%, and the conversion rate of glucose is 45%.

Embodiment 3

[0033] A method for converting hexoses into pentoses and formic acid, comprising the steps of:

[0034] Put 0.1 parts by mass of glucose, 0.01 parts by mass of Hβ zeolite and 1 part by mass of dimethyl sulfoxide into an autoclave, react at 200°C for 3 hours, cool and filter after the reaction to obtain xylose, arabinose and formic acid The reaction solution.

[0035] After testing, in this embodiment, the yield of xylose is 14%, the yield of arabinose is 3%, the yield of formic acid is 18%, and the conversion rate of glucose is 20%.

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Abstract

The invention discloses a method for converting hexose into pentose and formic acid, comprising the following steps: dispersing hexose and a catalyst in a solvent, and reacting at 140 DEG C to 200 DEG C to obtain xylose, arabinose and formic acid. The method of the invention is simple to operate, can convert hexose into pentose in one step, and can also obtain formic acid at the same time, has high selectivity, high added value of the product, and the catalyst is easy to obtain, the solvent system is relatively cheap, easy to realize industrialization, and is expected Expand the diversity of platform chemistries starting from simple hexose sugars.

Description

technical field [0001] The invention relates to the technical field of biomass sugar production, in particular to a method for converting hexose into pentose and formic acid. Background technique [0002] Biomass pentose sugars mainly include xylose and arabinose, mainly derived from hemicellulose. Xylose, also known as five-carbon aldose, is an important multifunctional sugar, mainly used in the production of xylitol, and can also be converted into various platform compounds, such as furfural, furfuryl alcohol and γ-valerolactone, etc., in food It is widely used in processing, pharmaceutical, chemical and other fields. Arabinose, also known as gum aldose, is a low-calorie sweetener that has been approved by the U.S. Food and Drug Administration and the Japanese Ministry of Health and Welfare as a health food additive. It can inhibit the metabolism and absorption of sucrose, inhibit blood sugar and fat, and change The efficacy of skeletal muscle fiber components has many u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07H1/00C07H3/02C07C51/00C07C53/02
CPCC07H1/00C07H3/02C07C51/00C07C53/02
Inventor 任俊莉李蕊林琦璇
Owner SOUTH CHINA UNIV OF TECH
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