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A kind of preparation method of mesoporous carbon material

A production method and technology of porous carbon, applied in the preparation/purification of carbon, chemical instruments and methods, carbon compounds, etc., can solve the problems of high production cost and difficulty in wide application, achieve environmental stability, improve safety, and good structure The effect of intensity

Active Publication Date: 2019-03-12
江苏丽鑫实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method still has problems in controlling the pore size and pore size distribution, and the production cost is high, so it is difficult to be widely used.

Method used

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  • A kind of preparation method of mesoporous carbon material

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Effect test

Embodiment 1

[0023] A method for preparing a mesoporous carbon material, comprising the following steps:

[0024] (1) Raw materials: the main raw materials for making mesoporous carbon materials include activated carbon, and the preparation method of the activated carbon is to mix semi-coke and coconut shells, put the mixture into a pulverizer and pulverize it until the particle size is less than 1mm, to obtain mixture a; mix the mixture a is immersed in a phosphoric acid solution with a mass concentration of 5% for 5 hours, washed with water to neutrality, and then carbonized under a nitrogen atmosphere after drying. The carbonization temperature is 600° C., and the carbonization time is 5 hours to obtain activated carbon; wherein, the The mass ratio of semi-coke and coconut shell is 5:1;

[0025] (2) Impregnation: Mix the activated carbon described in step (1) with the pore-forming agent, impregnate for 2 hours under the condition of ultrasonic vibration, dry at 80-105°C for 10 hours, an...

Embodiment 2

[0030] A method for preparing a mesoporous carbon material, comprising the following steps:

[0031] (1) Raw materials: the main raw materials for making mesoporous carbon materials include activated carbon, and the preparation method of the activated carbon is to mix semi-coke and coconut shells, put the mixture into a pulverizer and pulverize it until the particle size is less than 1mm, to obtain mixture a; mix the mixture a is immersed in a phosphoric acid solution with a mass concentration of 8% for 8 hours, washed with water to neutrality, and then carbonized in a nitrogen atmosphere after drying. The carbonization temperature is 850° C., and the carbonization time is 6 hours to obtain activated carbon; wherein, the The mass ratio of semi-coke and coconut shell is 6:1;

[0032] (2) Impregnation: Mix the activated carbon described in step (1) with the pore-forming agent, impregnate for 4 hours under the condition of ultrasonic vibration, dry at 80-105°C for 12 hours, take ...

Embodiment 3

[0037] A method for preparing a mesoporous carbon material, comprising the following steps:

[0038] (1) Raw materials: the main raw materials for making mesoporous carbon materials include activated carbon, and the preparation method of the activated carbon is to mix semi-coke and coconut shells, put the mixture into a pulverizer and pulverize it until the particle size is less than 1mm, to obtain mixture a; mix the mixture a is immersed in a phosphoric acid solution with a mass concentration of 6% for 6 hours, washed with water to neutrality, and carbonized under a nitrogen atmosphere after drying. The carbonization temperature is 650 ° C, and the carbonization time is 5.2 hours to obtain activated carbon; wherein, The mass ratio of described semi-coke and coconut shell is 5.3:1;

[0039](2) Impregnation: Mix the activated carbon described in step (1) with the pore-forming agent, impregnate for 3 hours under the condition of ultrasonic vibration, dry at 80-105°C for 11 hours...

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Abstract

The invention provides a preparation method of a mesoporous carbon material and belongs to the field of material production. The mesoporous carbon material is mainly prepared from activated carbon. The preparation method comprises the following steps: mixing and immersing a pore forming agent prepared by mixing activated carbon with polyvinyl alcohol, polyethylene glycol, polyvinylpyrrolidone and ethanol under an ultrasonic vibrating condition; drying the mixture and carbonizing the dried mixture in a carbonizing furnace for 3-6 hours; then immersing the obtained substance in a nitric acid solution for 5-6 hours; and after drying and crushing the substance, treating the substance for 30-35 minutes at 900-950 DEG C under nitrogen protection to obtain the mesoporous carbon material. The mesoporous carbon material is high in porosity, has a relatively high specific surface area, has a good adsorption action and is safe in preparation method.

Description

【Technical field】 [0001] The invention relates to the technical field of material production, in particular to a method for preparing a mesoporous carbon material. 【technical background】 [0002] Carbon is the most abundant element in the world. It has a variety of electron orbital characteristics, which leads to the anisotropy of its crystal and the anisotropy of its arrangement, so that carbonaceous materials have various properties and forms. Traditional Carbon materials include activated carbon, charcoal, graphite, etc.; activated carbon is divided into macroporous carbon, mesoporous carbon and microporous carbon according to the different internal pore sizes. Activated carbon less than 2nm, and the well-known activated carbon used to treat pollutants in sewage is mainly mesoporous carbon, because mesopores are pores with a pore size of 2-50nm, and water and ions in the solution will overlap when entering the pores. Therefore, activated carbon with too many micropores i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/05C01B32/324
CPCC01P2006/12
Inventor 谢英健
Owner 江苏丽鑫实业有限公司
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