Green preparation method of levoglucosone having high added value

A L-glucosone, high value-added technology, applied in the preparation of sugar derivatives, chemical instruments and methods, dehydrated sugars, etc., can solve problems such as low yield of L-glucosone, achieve low price, reduce corrosion and pollution, select good effect

Inactive Publication Date: 2014-03-12
湖南清欣绿色环保有限公司
View PDF1 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a green method for preparing high-value-added L-glucosone, which ov...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Green preparation method of levoglucosone having high added value

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Mechanically mix 5g of microcrystalline cellulose and 5g of zinc phosphate (mass ratio is 0.01:1) and then pyrolyze it at 200 ℃ under anaerobic conditions. The pyrolysis time is 2 hours. Bio-oil containing L-glucosone, from which L-glucosone is isolated.

Embodiment 2

[0029] Mechanically mix 5g of microcrystalline cellulose and 5g of zinc phosphate (mass ratio is 50:1) and then pyrolyze it at 450°C under anaerobic conditions. The product is condensed and the liquid is collected, which is the bio oil, and then separate out L-glucosone.

Embodiment 3

[0031] Mechanically mix 10g of microcrystalline cellulose and 5g of zinc phosphate (mass ratio: 100:1) and then pyrolyze at 700°C under anaerobic conditions. The pyrolysis time is 2 hours. After the product is condensed, the liquid is collected, which contains The bio-oil of L-glucosone, and then isolate the L-glucosone.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a green preparation method of levoglucosone having a high added value. The green preparation method comprises the following steps that 1, cellulose or wood fiber-like biomass contacts with a phosphate, the phosphate is a monophosphate or a phosphate-containing mixture, and a mass ratio of the phosphate to the wood fiber-like biomass mixed mechanically is in a range of 0.01: 1-100: 1; and 2, under the oxygen-free condition, the mixture obtained by the step 1 is subjected to pyrolysis at a temperature of 200-700 DEG C for more than 0.0001s; the pyrolysis product is condensated; and the condensate is collected; and levoglucosone is separated from the condensate. The wood fiber raw material is common and can be obtained easily. The phosphate has a low price, good stability and a low pyrolysis temperature. Levoglucosone has high selectivity. Through use of the phosphate which has a low price and can be recycled, a production cost, acid corrosion and acid pollution are reduced. The green preparation method is a green, economic and effective method for preparing levoglucosone.

Description

technical field [0001] The invention relates to a green method for preparing high value-added glucosone. The invention belongs to the technical field of levoglucosone preparation. Background technique [0002] The bio-oil obtained from biomass pyrolysis has high utilization value. It can not only be used as a substitute resource for fossil energy, but also can be refined to obtain many high-value chemicals, such as furfural (FF), levoglucosone (LGO) , levoglucosan (LG), 1,4:3,6-dianhydro-D-glucopyranose (DGP), glycolaldehyde (HAA), 5-hydroxymethylfurfural (HMF), etc. However, because the bio-oil produced by non-catalytic pyrolysis has many and complex components, it is very difficult to extract a single component for large-scale production. [0003] Levoglucosenone (1,6-anhydro-3,4-dideoxy-β-D-pyranose-2-one) is an important pyrolysis product of cellulose under the action of an acid catalyst. Its structure was identified in 1973. Levoglucosone (LGO) It is an optically ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C07H3/10C07H1/00
Inventor 夏海岸葛跃杰肖媛元朱亚琦左宋林
Owner 湖南清欣绿色环保有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products