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Method for preparing levoglucosenone

A technology of L-glucosone and co-pyrolysis, applied in the field of comprehensive utilization of solid waste, can solve the problems of shedding of functional groups of skeleton, difficult to reuse, and the reuse of functional groups has not been obviously reported, and achieves the promotion of selectivity. The effect of transformation, simple method

Inactive Publication Date: 2021-04-13
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, after repeated regeneration and use of resinous organic polymers, the skeleton collapses, and some functional groups in the skeleton fall off, causing a significant decline in adsorption, separation or catalytic performance, making it difficult to reuse
At present, the disposal methods of waste macroporous resins in industrial production are mainly direct incineration and landfill, but there is no obvious report on the reuse of residual functional groups in its structure.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The waste strong acidic macroporous resin Amberlyst-15 and 100 mesh microcrystalline cellulose were uniformly ground and mixed at a mass ratio of 1:1. 4 Co-pyrolysis was carried out under the condition of ℃ / s and the pyrolysis atmosphere was argon, and the pyrolysis time was 20s; the relative content of L-glucosone in the pyrolysis product was analyzed by gas chromatography-mass spectrometry, and the L-glucosone in the pyrolysis product was calculated. The relative content of glucosone is 60.2%.

Embodiment 2

[0019] The waste strong acidic macroporous resin Amberlyst-15 and 400 mesh microcrystalline cellulose were uniformly ground and mixed at a mass ratio of 0.1:1. 2 Co-pyrolysis was carried out under the condition of ℃ / s and the pyrolysis atmosphere was nitrogen, and the pyrolysis time was 20s; the relative content of L-glucosone in the pyrolysis product was analyzed by gas chromatography-mass spectrometry, and the L-glucose in the pyrolysis product was calculated. The relative content of ketone is 23.0%.

Embodiment 3

[0021] The waste strong acidic macroporous resin Amberlyst-15 and 200 mesh microcrystalline cellulose were uniformly ground and mixed at a mass ratio of 0.7:1. 3 Co-pyrolysis was carried out under the condition of ℃ / s and the pyrolysis atmosphere was helium, and the pyrolysis time was 20s; the relative content of L-glucosone in the pyrolysis product was analyzed by gas chromatography-mass spectrometry, and the L-glucosone in the pyrolysis product was calculated. The relative content of glucosone is 52.1%.

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Abstract

The invention discloses a method for preparing levoglucosenone. The method comprises the following steps: grinding and mixing waste strongly acidic macroporous resin Amberlyst-15 and cellulose powder according to a mass ratio of (0.1-1): 1, and carrying out co-pyrolysis in an oxygen-free environment at 250-450 DEG C to prepare the levoglucosenone. According to the method, the waste strongly acidic macroporous resin Amberlyst-15 and the cellulose are subjected to co-pyrolysis treatment, so that the selective conversion of the cellulose to levoglucosenone can be promoted, and the green resource utilization and treatment of the waste resin high polymer can be realized. The method is simple and easy to implement, and can be further popularized and applied to pyrolysis conversion of other wood fiber biomass resources and green resource reutilization and co-treatment of waste resin.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of solid waste, and in particular relates to a method for preparing levoglucosone. Background technique [0002] Strongly acidic macroporous resin is a kind of functional macromolecular organic polymer, which has been widely used in wastewater treatment, pharmaceutical industry, chemical industry, analytical chemistry and other fields. Generally speaking, after repeated regeneration and use of resinous organic polymers, the skeleton collapses, and some functional groups in the skeleton fall off, resulting in a significant decline in adsorption, separation or catalytic performance, making it difficult to reuse. At present, the disposal methods of waste macroporous resins in industrial production are mainly direct incineration and landfill, but there is no obvious report on the reuse of residual functional groups in its structure. On the other hand, my country produces billions of tons of a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D493/08C07H3/10C07H1/00
CPCC07B2200/07C07D493/08C07H1/00C07H3/10
Inventor 袁浩然张军李承宇顾菁王舒笑
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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