Method for preparing nano flaky nitrogen-containing porous carbon material

A technology of nano-flaky and porous carbon, which is applied in the preparation of sugar derivatives, chemical instruments and methods, and other chemical processes. It can solve the problems of porous carbon material pore structure changes, pore volume reduction, and high production costs. volume, promoting the formation of pores, and the effect of high specific surface area

Inactive Publication Date: 2015-03-25
ZHONGBEI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The conventional method of introducing nitrogen-containing functional groups is to pass ammonia gas at high temperature for ammoniation to form nitrogen-containing functional groups on the surface of porous carbon. Problems such as volume reduction
Therefore, the synthesis of nitrogen-containing porous carbon materials with nitrogen-containing precursors has attracted the attention of researchers. carbonization activation to prepare nitrogen-containing porous carbon materials, but the production cost of this method is high

Method used

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  • Method for preparing nano flaky nitrogen-containing porous carbon material
  • Method for preparing nano flaky nitrogen-containing porous carbon material
  • Method for preparing nano flaky nitrogen-containing porous carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0023] Weigh the amount of potassium hydroxide and urea in Table 1 and dissolve them in 100ml of water, add the amount of cellulose in Table 1, disperse and mix evenly, after drying at 80°C, carbonize at 600°C, wash the carbonized product with water to obtain nano-sheet Nitrogen-containing porous carbon materials, test conditions and performance test results are shown in Table 1.

[0024]

Embodiment 7-12

[0026] Weigh the hydroxide or oxide in the amount in Table 2, dissolve it with urea in 100ml of water, add the cellulose in the amount in Table 2, disperse and mix evenly, dry at 80°C, carbonize at 700°C, and wash the carbonized product with water , to obtain nano-flaky nitrogen-containing porous carbon materials. The test conditions and performance test results are shown in Table 2.

[0027]

Embodiment 13-18

[0029] Weigh the amount of potassium hydroxide in Table 3 and the water-soluble amine-containing compound and dissolve them in 100ml of water, add the amount of cellulose in Table 3, disperse and mix evenly, dry at 80°C, carbonize at 800°C, wash the carbonized The product was obtained as a nano-flaky nitrogen-containing porous carbon material. The test conditions and performance test results are shown in Table 3.

[0030]

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Abstract

The invention discloses a method for preparing a nano flaky nitrogen-containing porous carbon material. The method comprises the following steps: dissolving alkali and a water soluble amino-containing compound in water, adding cellulose or a derivative of the cellulose, mixing and drying to obtain a crystalline complex of the alkali and the water soluble amino-containing compound wrapped with the cellulose or the derivative of the cellulose, carbonizing the crystalline complex under the nitrogen protection, and washing a carbonized product to obtain the nano flaky nitrogen-containing porous carbon material. By changing proportion of the alkali and the water soluble amino-containing compound to the cellulose or the derivative of the cellulose, the specific surface area, the pore structure and the nitrogen of the nano flaky nitrogen-containing porous carbon material and the thickness of the nano flake can be adjusted, so that the nano flaky nitrogen-containing porous carbon material with the thickness of 10-100 nm, the specific surface area of 800-2000 m<2> / g, the pore volume of 0.50-1.50 cm<3> / g, and the nitrogen content of 1-8wt% can be obtained.

Description

technical field [0001] The invention relates to a preparation method of a porous carbon material, in particular to a preparation method of a nitrogen-containing porous carbon material. The porous carbon material prepared by the invention has a nano sheet structure. Background technique [0002] Porous carbon materials have high specific surface area, large pore volume, uniform pore size distribution and excellent chemical and thermal stability, and have broad applications in the fields of adsorption, optical devices, nanoreactors, catalysis, electrochemistry, supercapacitors and energy storage. Application prospect. The multi-scale pore structure can effectively improve the diffusion of guest molecules in the pores of the material. Large pores facilitate the migration of macromolecules, while smaller pore sizes provide the specific surface area and pore volume required for the process, showing higher material and energy. transfer efficiency. [0003] Porous carbon materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30
CPCB01J20/02B01J20/20B01J20/28033C01B32/18C07H5/06C07H1/00C07H5/04C07H3/06
Inventor 胡拖平申文忠宋红艳韦锦全周文霞平伟光陈曦
Owner ZHONGBEI UNIV
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