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Method for preparing porous carbon material from humin and porous carbon material

A porous carbon material, black technology, applied in the application field of humin, can solve the problems of limited large-scale application, numerous steps, high energy consumption, etc., and achieve the effects of large-scale production application, simple preparation process and high specific surface area.

Active Publication Date: 2022-07-05
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this process also has problems such as high cost and high technical difficulty, which is not conducive to the promotion of the process of preparing carbon materials from humin
At the same time, the traditional way of preparing carbon materials often has problems such as strong dependence on templates, high energy consumption, and numerous steps. There are many inconveniences in the preparation process, which limits its further large-scale application.

Method used

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  • Method for preparing porous carbon material from humin and porous carbon material
  • Method for preparing porous carbon material from humin and porous carbon material
  • Method for preparing porous carbon material from humin and porous carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: a method for preparing porous carbon material from humin, comprising the following steps:

[0028] 1) Add humin and potassium permanganate (mass ratio 1:0.05) into a mixed solution of water and ethanol (volume ratio 1:0.5), stir at room temperature for 8 hours, and dry in an oven at 80°C to obtain a black solid ;

[0029] 2) Put the black solid into a tube furnace protected by helium gas, and calcine it at 300℃ for 1h;

[0030] 3) After cooling, take out the black solid and repeatedly rinse with deionized water and 1 mol / L acetic acid solution to obtain the biomass porous carbon material. Its BET test data is shown in Table 1.

Embodiment 2

[0031] Embodiment 2: a method for preparing porous carbon material from humin, comprising the following steps:

[0032] 1) Add humin and potassium permanganate (mass ratio 1:0.1) into a mixed solution of water and ethanol (volume ratio 1:3), stir at room temperature for 12 hours, and dry in an oven at 120°C to obtain a black solid ;

[0033] 2) Put the black solid into a tube furnace protected by helium gas, and calcine it at 900℃ for 1h;

[0034] 3) After cooling, take out the black solid and repeatedly rinse with deionized water and 6 mol / L acetic acid solution to obtain the biomass porous carbon material. Its BET test data is shown in Table 1.

Embodiment 3

[0035] Embodiment 3: a kind of method for preparing porous carbon material by humin, specifically comprising the following steps:

[0036] 1) Add humin and potassium permanganate (mass ratio 1:0.2) into a mixed solution of water and ethanol (volume ratio 1:3), stir at room temperature for 16 hours, and dry in an oven at 110°C to obtain a black solid ;

[0037] 2) Put the black solid into a tube furnace protected by helium gas, and calcine it at 900℃ for 2h;

[0038] 3) After cooling, take out the black solid and repeatedly rinse with deionized water and 3 mol / L acetic acid solution to obtain the biomass porous carbon material. Its BET test data is shown in Table 1.

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PUM

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Abstract

The invention relates to a method for preparing a porous carbon material from humin and a porous carbon material thereof.The method comprises the following steps that 1, humin and potassium ferrate / potassium permanganate are added into a mixed solution of water and ethyl alcohol, stirring is conducted for 12 h at the room temperature, the mixture is put into a drying oven to be dried, and a black solid is obtained; (2) putting the black solid into a tubular furnace under the protection of inert gas, and sufficiently calcining the black solid; and 3) cooling, taking out a black solid, and repeatedly washing with deionized water and an acid solution to obtain the biomass porous carbon material. The method has the advantages that the low-added-value by-product humin is converted into the porous biomass carbon material with utilization value, the preparation process has the characteristic of environmental friendliness, and the preparation method is simple, convenient, easy to operate and high in preparation efficiency. The prepared carbon material is high in specific surface area, large in pore volume and regular in structure, has a certain number of oxygen-containing groups on the surface, and has certain potential in the aspects of adsorption, chemical energy storage, efficient chemical process implementation and the like.

Description

technical field [0001] The invention relates to a method for preparing a porous carbon material from humin and a porous carbon material thereof, and relates to the application field of humin. Background technique [0002] With the increasingly prominent environmental problems and the increasing consumption of non-renewable fossil resources, the preparation of fuels from renewable biological resources and the transformation of green chemicals have attracted more and more attention. Lignocellulosic biomass and carbohydrates can be used to produce renewable platform chemicals such as 2,5-furandicarboxylic acid, 5-hydroxymethylfurfural, or levulinic acid through acid-catalyzed dehydration or oxidation routes. However, acid-catalyzed dehydration of carbohydrates generates large amounts of by-product humins during the transformation from starting materials to platform compounds. [0003] Humin is a polyfuran ring polymer with complex composition, which is mainly formed by the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05
CPCC01B32/05Y02E60/13
Inventor 成有为
Owner ZHEJIANG UNIV
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