Method for preparing levoglucosenone

A technology of levoglucosone and solid acid, which is applied to the preparation of sugar derivatives, chemical instruments and methods, and dehydrated sugars, etc., can solve the problems of low yield, achieve high yield, convenient operation, and avoid the effects of pretreatment steps

Inactive Publication Date: 2011-11-23
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for preparing levoglucosone in view of the low yield of the method for preparing levoglucosone with cellulose in the prior art

Method used

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  • Method for preparing levoglucosenone
  • Method for preparing levoglucosenone

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Put 55g of bagasse into 550ml of sulfuric acid with a concentration of 0.1M to soak, filter and dry. The processed sulfuric acid-containing bagasse is pyrolyzed at 300°C to collect the liquid, ie bio-oil containing L-glucosone.

Embodiment 2

[0035] Put 10g of bagasse into 100ml of a mixture of sulfuric acid and boric acid with a concentration of 0.8M, impregnate, filter, and dry. The treated sulfuric acid-containing bagasse was pyrolyzed at 260°C to collect the liquid, ie bio-oil containing L-glucosone.

Embodiment 3

[0037] Put 10g of silicon-aluminum nano-solid acid into 100ml of sulfuric acid solution with a concentration of 1M for immersion, filter and dry, load sulfuric acid on the solid acid, mix 2g of solid acid with 3g of bagasse, and then perform pyrolysis at 330°C to collect the liquid , that is, bio-oil containing L-glucosone.

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Abstract

The invention discloses a method for preparing levoglucosenone, which comprises the following steps: enabling biomass to be in contact with acid, wherein the acid is solid acid, sulfuric acid or a mixture of sulfuric acid and other liquid acid; and carrying out pyrolysis at 200-380 DEG C, collecting the liquid, and separating out levoglucosenone. The biomass material and the acid catalyst in the method are common, easy to acquire and low in cost; the pyrolysis temperature is low, and the product yield can be improved; and the corrosion and pollution caused by the acid can be effectively reduced. Thus, the method for preparing levoglucosenone is economic and effective.

Description

technical field [0001] The invention relates to the field of organic matter preparation, in particular to a method for preparing L-glucosone from biomass through acid-catalyzed pyrolysis. Background technique [0002] Biomass refers to various organisms produced through photosynthesis using the atmosphere, water, land, etc. It includes all plants, microorganisms, animals that feed on plants and microorganisms, and their wastes. With the global consumption of fossil energy such as coal and oil and the increasingly serious environmental pollution, people's demand for a renewable and clean energy source is becoming more and more urgent. Compared with fossil energy, biomass resources have the characteristics of wide distribution, large amount, no pollution and renewable. Biomass resources are the only sustainable source of organic carbon and the only renewable resource that can be converted into liquid fuels. Therefore, biomass resources are getting more and more attention. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H3/10C07H1/00
Inventor 张颖汪志隋先伟郭庆祥
Owner UNIV OF SCI & TECH OF CHINA
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