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Foam carbon preparation method based on waste biomass

A technology of waste biomass and foam carbon, which is applied in the direction of carbon preparation/purification, can solve the problem of high cost of foam carbon, achieve the effects of reducing economic costs, uniform size, and solving the shortage of raw materials

Inactive Publication Date: 2017-04-26
HAINAN UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of foam carbon synthesized from petroleum and coal chemical products is high, and its application is limited

Method used

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  • Foam carbon preparation method based on waste biomass
  • Foam carbon preparation method based on waste biomass
  • Foam carbon preparation method based on waste biomass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The foam charcoal preparation based on eucalyptus wood powder comprises the following steps:

[0032] (1) Pretreatment of waste biomass: the eucalyptus wood chips taken from the wood processing plant are pretreated as raw materials after being cleaned, dried and crushed.

[0033] (2) Liquefaction of eucalyptus powder: Mix 5 g of pulverized eucalyptus powder with 15 g of phenol, add 0.25 mL of concentrated sulfuric acid (98%) and 1 mL of phosphoric acid (85%), and liquefy at 140° C. for 2 h. The liquefied product was cooled to room temperature, washed with methanol, filtered under reduced pressure to obtain a methanol-liquefied product, and then the methanol was distilled off under reduced pressure in a rotary evaporator at 50°C to obtain a liquefied product.

[0034] (3) Resinization of the liquefied product: the obtained liquefied product was placed in a three-necked flask, and an alkali catalyst, that is, 5 mL of 1.25 mol / L NaOH solution was added. At 60°C, 25 mL of ...

Embodiment 2

[0039] The foam charcoal preparation based on eucalyptus wood powder comprises the following steps:

[0040] (1) Pretreatment of waste biomass: the eucalyptus wood chips taken from the wood processing plant are pretreated as raw materials after being cleaned, dried and crushed.

[0041] (2) Liquefaction of eucalyptus powder: Mix 5 g of crushed eucalyptus powder with 15 g of catechol, add 0.25 mL of concentrated sulfuric acid (98%) and 1 mL of phosphoric acid (85%), and liquefy at 180°C for 2 hours. The liquefied product was cooled to room temperature, washed with methanol, filtered under reduced pressure to obtain a methanol-liquefied product, and then the methanol was distilled off under reduced pressure in a rotary evaporator at 50°C to obtain a liquefied product.

[0042] (3) Resinization of the liquefied product: the obtained liquefied product was placed in a three-necked flask, and an alkali catalyst, that is, 5 mL of 1.25 mol / L NaOH solution was added. After adding 25 m...

Embodiment 3

[0047] The foam charcoal preparation based on eucalyptus wood powder comprises the following steps:

[0048] (1) Pretreatment of waste biomass: the eucalyptus wood chips taken from the wood processing plant are pretreated as raw materials after being cleaned, dried and crushed.

[0049] (2) Liquefaction of eucalyptus wood powder: the eucalyptus wood chips taken from the wood processing plant are pretreated as raw materials after being cleaned, dried and crushed. Mix 5 g of crushed eucalyptus powder with 15 g of phenol, add 0.5 mL of concentrated sulfuric acid (98%) and 2 mL of phosphoric acid (85%), and liquefy at 160°C for 2 hours. The liquefied product was cooled to room temperature, washed with methanol, filtered under reduced pressure to obtain a methanol-liquefied product, and then the methanol was distilled off under reduced pressure in a rotary evaporator at 50°C to obtain a liquefied product.

[0050] (3) Resinization of the liquefied product: the obtained liquefied p...

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Abstract

The invention discloses a foam carbon preparation method based on waste biomass. The method comprises the following steps that waste biomass is pretreated; 2, the waste biomass is liquefied; 3, a liquefaction product is resinified, and a resin product is obtained; 4, the resin product is foamed, and a foam carbon precursor is obtained; 5, the foam carbon precursor is chemically activated and carbonized, and foam carbon is obtained. According to the foam carbon preparation method based on the waste biomass, the forestry waste biomass, the agriculture waste biomass and the aquatic plant waste biomass are taken as raw materials and can partially replace traditional petroleum and coal chemical industry intermediates to serve as raw materials for synthesizing the foam carbon, therefore, the economic cost is effectively reduced, and the raw material shortage problem is solved. By combining a liquefaction technique, a resinification technique, a foam carbon precursor preparation technique and an activation technique, the porous foam carbon with the uniform size and the ordered structure can be synthesized, and the application value and the economic benefit of the foam carbon are increased.

Description

technical field [0001] The invention relates to the field of solid organic waste recycling and environmental pollution control, in particular to a preparation method of a foamed carbon material based on waste biomass. Background technique [0002] Foamed carbon is a lightweight porous carbon material with a three-dimensional network structure composed of cells and interconnected cell walls. It has the characteristics of light specific gravity, large surface area, high mechanical strength, and stable chemical and thermodynamic properties. It needs to be made into arbitrary specifications and shapes for easy use and recycling. Therefore, foamed carbon has broad application prospects in the fields of adsorption materials, catalyst supports, electrode materials and energy storage materials. The raw materials for the preparation of traditional foam carbon mainly come from the intermediate products of petroleum and coal chemical industry. The cost of foam carbon synthesized from...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05
CPCC01P2004/03
Inventor 孙蕾万顺刚陈冬梅袁丹喻泽斌
Owner HAINAN UNIVERSITY
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