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A kind of preparation method of nitrogen-doped porous carbon material

A nitrogen-doped porous carbon and reaction technology, which is applied in the preparation/purification of carbon, etc., can solve the problems of high cost, the template method is not suitable for large-scale production, and the nitrogen atom doping process is complicated.

Active Publication Date: 2021-09-14
FUJIAN XINSEN CARBON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional nitrogen atom doping process is complicated, the cost is high, and the doping degree is limited
At the same time, template methods for building porous structures are not suitable for large-scale production

Method used

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  • A kind of preparation method of nitrogen-doped porous carbon material
  • A kind of preparation method of nitrogen-doped porous carbon material
  • A kind of preparation method of nitrogen-doped porous carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Weigh 0.8524g of copper chloride dihydrate, place it in a 50mL polytetrafluoroethylene-lined autoclave, add 25mL of ethanol, mix well, and cover the kettle tightly.

[0026] (2) Put the autoclave in a muffle furnace and react at 160°C for 24h. Cool to room temperature, filter under reduced pressure, and dry the product in vacuum at 50°C for 12 hours. Store in a dark place under a nitrogen protection atmosphere to obtain cuprous chloride nanocrystals with a diameter of 2-10 nm.

[0027] (3) 0.025g of cuprous chloride crystal powder, 0.246g of 1,4-dibromobenzene and 0.123g of 1,3,5-triaminobenzene were dissolved in 5.0mL of acetonitrile, nitrogen was added to form a protective atmosphere, and the temperature Maintained at 80°C, refluxed for 12h.

[0028] (4) The reaction mixture was taken out, washed with 25% ammonia water, water and acetone respectively, and dried and stored.

[0029] figure 1 A schematic diagram of the preparation of a covalent organic framework...

Embodiment 2

[0033] (1) Weigh 0.8524g of copper chloride dihydrate, place it in a 50mL polytetrafluoroethylene-lined autoclave, add 25mL of ethanol, mix well, and cover the kettle tightly.

[0034] (2) Put the autoclave in a muffle furnace and react at 160°C for 24h. Cool to room temperature, filter under reduced pressure, and dry the product in vacuum at 50°C for 12 hours. Store in a dark place under a nitrogen protection atmosphere to obtain cuprous chloride nanocrystals with a diameter of 2-10 nm.

[0035] (3) 0.025g of cuprous chloride crystal powder, 0.246g of 1,4-dibromobenzene and 0.123g of 1,3,5-triaminobenzene were dissolved in 5.0mL of acetonitrile, nitrogen was added to form a protective atmosphere, and the temperature Maintained at 120°C, refluxed for 10h.

[0036] (4) The reaction mixture was taken out, washed with 25% ammonia water, water and acetone respectively, and dried and stored.

Embodiment 3

[0038] (1) Weigh 0.8524g of copper chloride dihydrate, place it in a 50mL polytetrafluoroethylene-lined autoclave, add 25mL of ethanol, mix well, and cover the kettle tightly.

[0039] (2) Put the autoclave in a muffle furnace and react at 160°C for 24h. Cool to room temperature, filter under reduced pressure, and dry the product in vacuum at 50°C for 12 hours. Store in a dark place under a nitrogen protection atmosphere to obtain cuprous chloride nanocrystals with a diameter of 2-10 nm.

[0040] (3) 0.025g of cuprous chloride crystal powder, 0.236g of 1,4-dibromobenzene and 0.249g of 2,4,6-triethylbenzene-1,3,5-trimethylamine were dissolved in 5.0mL of acetonitrile , nitrogen was added to form a protective atmosphere, the temperature was maintained at 120 ° C, and reflux was performed for 10 h.

[0041] (4) The reaction mixture was taken out, washed with 25% ammonia water, water and acetone respectively, and dried and stored.

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Abstract

The invention provides a preparation method of a nitrogen-doped porous carbon material. A nanoscale cuprous chloride catalyst is prepared by a solvothermal method, and 1,3,5-triaminobenzene, 1,4-dibromobenzene or other monomer combinations with similar structures are selected for use in cuprous chloride nanocrystals Covalent organic framework materials with regular pore diameters or porous materials with irregular pore diameters are prepared under catalysis. The porous material prepared by the method disclosed in the invention has high nitrogen content, rich pore structure, large specific surface area, and good gas adsorption performance, which not only enriches the preparation method of nitrogen-doped porous carbon materials, but also has the advantages of simple and easy operation process , the preparation process does not require high equipment, and is easy to industrialized mass production.

Description

technical field [0001] The invention belongs to the field of preparation of gas adsorption materials, in particular to a preparation method of nitrogen-doped porous carbon materials. Background technique [0002] Due to the advantages of hydrophobicity, low density, good stability, high specific surface area, and adjustable physical and chemical properties, porous carbon materials have aroused extensive research interest in recent years and have been used in gas storage, heterogeneous catalysis, and organic optoelectronics. . Introducing nitrogen into carbon materials can further adjust the structure, surface chemical properties and electronic conductivity of the material, making it have a broader application and development prospect. In addition to all the advantages of porous carbon materials, nitrogen-doped porous carbon materials have further expanded their application range in adsorption, superhard materials, catalysis, and fuel cells due to their unique mechanical, el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02
CPCB01J20/20B01J20/28054B01J20/30C01B32/05
Inventor 苗中正
Owner FUJIAN XINSEN CARBON
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