Hydrolysis method of saccharide compound

A compound and sugar technology, which is applied in the field of catalytic hydrolysis of sugar compounds, can solve the problems of difficult catalyst recovery, high energy consumption, and many side reactions, and achieve the effects of not easy equipment corrosion, simple separation, and reduced catalytic efficiency

Inactive Publication Date: 2018-12-07
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an economical and green method for the hydrolysis of carbohydrate compounds. This process is environmentally friendly, the conditions are mild, and the catalyst can be reused to overcome the serious pollution, high energy consumption, difficult recovery of the catalyst, and many side reactions in the prior art. and other shortcomings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take 1.5g of attapulgite clay, add 20ml of prepared 1M sulfuric acid, stir at room temperature for 52 hours, let it stand for 12 hours to age, centrifuge to separate the lower sediment, then wash with water until the pH becomes neutral, dry at 60°C, grind, and then put Dry in a vacuum oven at 110°C for 2h, then slowly heat up to 300°C in a muffle furnace for activation for 3h to obtain the desired catalyst, which is attapulgite clay catalyst treated with phosphoric acid.

[0023] Take 0.1 g of attapulgite clay catalyst and 1.2 g of inulin obtained above after sulfuric acid treatment, add 20 ml of water, react at 60°C for 60 min, filter the reaction solution to separate the catalyst, and the yield of monosaccharide is 98%. After the catalyst is recovered, it can be recycled after being washed and dried, and the number of cycles is more than 3 times.

Embodiment 2

[0025] Take 1.5g of attapulgite clay, add 20ml of prepared 1.5M phosphoric acid, stir at room temperature for 52 hours, let stand for aging for 12 hours, centrifuge to separate the lower sediment, then wash with water until the pH becomes neutral, dry at 60°C, grind, and then Dry in a vacuum oven at 110°C for 2h, then slowly heat up to 300°C in a muffle furnace for activation for 3h to obtain the desired catalyst, which is attapulgite clay catalyst treated with phosphoric acid.

[0026] Take 0.1 g of attapulgite clay catalyst obtained after phosphoric acid treatment, 1.2 g of cellobiose, add 20 ml of water, react at 90 ° C for 60 min, filter the reaction solution to separate the catalyst, and the yield of monosaccharide is 95%.

Embodiment 3

[0028] Take 1.5g of attapulgite clay, add 20ml of prepared 3M hydrochloric acid, stir at room temperature for 52 hours, let stand for 12 hours of aging, centrifuge to separate the lower sediment, then wash with water until the pH becomes neutral, dry at 60°C, grind, and then put Dry in a vacuum oven at 110°C for 2h, then slowly heat up to 300°C in a muffle furnace for activation for 3h to obtain the desired catalyst, which is an attapulgite clay catalyst treated with hydrochloric acid.

[0029] Take 0.1 g of attapulgite clay catalyst obtained after hydrochloric acid treatment, 1.2 g of sucrose, add 20 ml of water, react at 80 ° C for 270 min, filter the reaction solution to separate the catalyst, and the yield of monosaccharide is 91%.

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PUM

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Abstract

The invention discloses a hydrolysis method of a saccharide compound. Under the action of a solid catalyst, the saccharide compound is hydrolyzed to generate a monosaccharide; the solid catalyst is attapulgite clay; the natural attapulgite clay is subjected to heating treatment under certain temperature, and the acidity of the catalyst is regulated and controlled through different protonic acid under different temperature; then polysaccharide is catalytically hydrolyzed into the monosaccharide; and the hydrolysis method has the characteristics of moderate reaction conditions, low price of allcatalysts, environment friendliness, simple technology, easiness for separating the catalysts, capability of being repeatedly used and the like.

Description

technical field [0001] The invention belongs to the technical field of chemical catalysts, and in particular relates to a method for catalytic hydrolysis of sugar compounds. Background technique [0002] Sugars are an important class of organic compounds widely distributed in nature. Sucrose in daily consumption, starch in food, cellulose in plants, and glucose in human blood are all sugars. Sugar plays an important role in the process of life activities, and is the main source of energy required by all living organisms to maintain life activities. The most important sugars in plants are starch and cellulose, and the most important polysaccharide in animal cells is glycogen. Carbohydrates are divided into four types: monosaccharides, oligosaccharides (oligosaccharides), polysaccharides, and complex sugars. Monosaccharides are the simplest type of sugar structure. Monosaccharide molecules contain many hydrophilic groups and are easily soluble in water, but insoluble in org...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C13K1/00C13K3/00B01J27/16
CPCB01J27/16C13K1/00C13K3/00
Inventor 杨凤丽周立笙夏菲菲姚鹏飞翁居轼郑纯智秦丽珍
Owner JIANGSU UNIV OF TECH
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