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Method and catalyst for hydrolyzing saccharide compounds

An aldehyde compound, compound technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of high energy consumption and long preparation steps for preparing carbon supports problem, to achieve the effect of strong acidity, low cost and long catalyst life

Inactive Publication Date: 2014-01-15
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the above catalysts for the hydrolysis of sugar compounds are prepared from biomass, the catalyst preparation process requires sulfonation reaction to introduce sulfonic acid groups, and the preparation of carbon supports requires high energy consumption and long preparation steps.

Method used

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  • Method and catalyst for hydrolyzing saccharide compounds
  • Method and catalyst for hydrolyzing saccharide compounds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 50g of sodium lignosulfonate and prepare an aqueous solution with a mass concentration of 15%. Add 25g of furfural to a pressure-resistant polyester bottle, add 5g of SBA-15 as a template, mix, stir, and drop the mass fraction into the reaction vessel. 15g of 37% hydrochloric acid, stir until the solution is evenly mixed, airtight, and place in an oven at 100°C to react for 24 hours. Then the prepared black material was dried at 110°C, ground, treated with hydrofluoric acid at room temperature for more than 12 hours to remove the template, treated with 1M sulfuric acid for 2 hours to ensure that the sodium ions were completely exchanged, washed until there was no sulfate ions, dried, The biomass acid material is obtained. This material is used as a catalyst for the hydrolysis of sugars. Add 5g of this catalyst and 30g of cellobiose into the reaction kettle, add 75mL of water, stir and react for 4h at 120°C, centrifuge for separation, and detect the conversion of r...

Embodiment 2

[0022] Weigh 50g of sodium lignosulfonate and prepare it into an aqueous solution with a mass concentration of 15%. Add 25g of a 37% formaldehyde solution to a pressure-resistant polyester bottle. Add 5g of SBA-15 as a template, mix, stir, and react. Add 15 g of hydrochloric acid with a mass fraction of 37% to the container, stir until the solution is evenly mixed, airtight, and place in an oven at 100°C to react for 24 hours. Then the prepared black material was dried at 110°C, ground, treated with hydrofluoric acid at room temperature for more than 12 hours to remove the template, treated with 1M sulfuric acid for 2 hours to ensure that the sodium ions were completely exchanged, washed until there was no sulfate ions, dried, The biomass acid material is obtained. This material is used as a catalyst for the hydrolysis of sugars. Add 5g of this catalyst and 30g of cellobiose into the reaction kettle, add 75mL of water, stir and react for 4h at 120°C, centrifuge for separation,...

Embodiment 3

[0024] Add 50g of magnesium lignosulfonate into an aqueous solution with a mass concentration of 25%, and add 25g of a 37% formaldehyde solution to a pressure-resistant polyester bottle, add 5g of SBA-15 as a template, mix, stir, and add to the reaction vessel Add 15 g of 37% hydrochloric acid in the medium dropwise, stir until the solution is evenly mixed, airtight, and place in an oven at 100°C to react for 24 hours. Then the prepared black material was dried at 110°C, ground, treated with hydrofluoric acid at room temperature for more than 12 hours to remove the template, treated with 1M sulfuric acid for 2 hours to ensure that the sodium ions were completely exchanged, washed until there was no sulfate ions, dried, The biomass acid material is obtained. This material is used as a catalyst for the hydrolysis of sugars. Add 5g of this catalyst and 30g of cellobiose into the reaction kettle, add 75mL of water, stir and react for 4h at 120°C, centrifuge for separation, and det...

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Abstract

The invention relates to a method and catalyst for hydrolyzing saccharide compounds. An acidic material with densely distributed strong / weak-acidity groups is used in the process of hydrolyzing the saccharide compounds into monosaccharides, thereby solving the problems of lower monosaccharide yield and overhigh catalyst cost. By adopting the catalyst provided by the invention, the hydrolysis conversion rate of the saccharides can reach 90% above, and the oligosaccharide hydrolysate selectivity can reach 90% above. The catalyst is easy for separation and can be recycled, and has the characteristics of wide application range for saccharide compounds and the like.

Description

Technical field [0001] The invention belongs to the technical field of catalysts, and specifically relates to a method for hydrolyzing sugar compounds and a catalyst thereof. Background technique [0002] Currently, cellulose-based products are widely used in plastics, explosives, electrical engineering and scientific research equipment. Polysaccharides and cellulose hydrolysate monosaccharides are used in reaction intermediates. At present, the hydrolysis of sugars and cellulose containing glycosidic bonds mainly adopts metal-supported catalysts, which are costly. In industrial applications, inorganic acids are used, and the reaction results are good, but there are many by-products, the post-treatment process is complicated, and the discharge of waste acid pollutes the environment. Ionic liquid is used as a catalyst, and the reaction conditions are mild, but the separation of the catalyst is difficult. [0003] In recent years, a solid material containing sulfonic acid groups h...

Claims

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Application Information

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IPC IPC(8): C13K3/00B01J31/06B01J35/10
Inventor 王峰张晓辰徐杰王业红陈贵夫
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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