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

A nitrogen-doped porous carbon and nitrogen-doped carbon technology, which is applied in the preparation/purification of carbon, can solve problems such as limiting practical applications and staying in the academic research stage, avoiding complex steps, concentrated pore size distribution, and improving catalysis. active effect

Active Publication Date: 2018-07-20
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The template method can be used to prepare porous carbon materials with controllable morphology, but the complicated preparation process makes it only in the academic research stage, which seriously limits the practical application of this method.

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
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Effect test

Embodiment 1

[0038] (1) Preparation of P4VP / dehydrated ethanol solution: at room temperature, take 1.05g of P4VP and add it to 250ml of dehydrated ethanol, and magnetically stir to dissolve P4VP to obtain a P4VP / dehydrated ethanol solution with a concentration of 0.04mol / L, which is ready for use.

[0039] (2) Preparation of coordination metal solution (with Fe 3+ For example): take 2.7g FeCl 3 Dissolve in 250ml absolute ethanol, magnetically stir to make FeCl 3 Dissolve FeCl with a concentration of 0.04mol / L 3 / absolute ethanol solution for use.

[0040] (3) Preparation of carbonized precursor: under the condition of magnetic stirring at room temperature, take 25ml FeCl 3 / dehydrated ethanol solution is added in 100ml P4VP / dehydrated ethanol solution, molar ratio (P4VP: Fe 3+ =4:1; After 24 hours of reaction, a stable complex precipitate was formed, and then subjected to vacuum distillation at 60°C and vacuum drying at 120°C for 12 hours to obtain the carbonized precursor.

[0041] ...

Embodiment 2

[0045] (1) Preparation of P4VP / dehydrated ethanol solution: at room temperature, take 1.05g of P4VP and add it to 250ml of dehydrated ethanol, and magnetically stir to dissolve P4VP to obtain a P4VP / dehydrated ethanol solution with a concentration of 0.04mol / L, which is ready for use.

[0046] (2) Preparation of coordination metal solution (with Fe 3+ For example): take 2.7g FeCl 3 Dissolve in 250ml absolute ethanol, magnetically stir to make FeCl 3 Dissolve FeCl with a concentration of 0.04mol / L 3 / absolute ethanol solution for use.

[0047] (3) Preparation of carbonized precursor: under the condition of magnetic stirring at room temperature, take 100ml FeCl 3 / dehydrated ethanol solution is added in 100ml P4VP / dehydrated ethanol solution, molar ratio (P4VP: Fe 3+ =1:1; After 24 hours of reaction, a stable complex precipitate was formed, and then subjected to vacuum distillation at 60°C and vacuum drying at 120°C for 12 hours to obtain the carbonized precursor.

[0048]...

Embodiment 3

[0052] (1) Preparation of P4VP / dehydrated ethanol solution: at room temperature, take 1.05g of P4VP and add it to 250ml of dehydrated ethanol, and magnetically stir to dissolve P4VP to obtain a P4VP / dehydrated ethanol solution with a concentration of 0.04mol / L, which is ready for use.

[0053] (2) Preparation of coordination metal solution (with Fe 3+ For example): take 2.7g FeCl 3 Dissolve in 250ml absolute ethanol, magnetically stir to make FeCl 3 Dissolve FeCl with a concentration of 0.04mol / L 3 / absolute ethanol solution for use.

[0054] (3) Preparation of carbonized precursor: under the condition of magnetic stirring at room temperature, take 100ml FeCl 3 / dehydrated ethanol solution is added in 25ml P4VP / dehydrated ethanol solution, molar ratio (P4VP: Fe 3+ =1:4; After 24 hours of reaction, a stable complex precipitate was formed, and then subjected to vacuum distillation at 60°C and vacuum drying at 120°C for 12 hours to obtain the carbonized precursor.

[0055] ...

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Abstract

The invention discloses a preparation method of a nitrogen-doped porous carbon material. The preparation method comprises the following steps: taking poly 4-vinylpyridine (P4VP) as a carbon source and a nitrogen source and taking metal ions a ligand to form a carbonized precursor on the basis of a metal organic coordination theory; and then carbonizing the carbonized precursor at high temperature and washing the carbonized precursor with hydrochloric acid to obtain the nitrogen-doped porous carbon material. The preparation method has the characteristics of simple steps, convenience in operation and suitability to large-scale production. Moreover, the prepared nitrogen-doped porous carbon material has the advantages of large specific surface area, concentrated pore size distribution and high nitrogen content. By the preparation method of the porous carbon material, the shortcomings that steps of a template method are complicated or in an activation method, requirements on equipment are high, and pore size distribution is uneven are overcome. The preparation method can be widely applied to the fields of energy storage conversion, catalysis and environmental protection.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a preparation method of a nitrogen-doped porous carbon material. Background technique [0002] For a long time, the design and development of new porous materials with fine pore structure has been an important field of material science research. Porous material is a material with a network structure composed of interpenetrating or closed pores. Because of its uniform pore structure of molecular size, continuous pore system and large specific surface area, it can be used in adsorption, ion exchange, especially in catalysis, etc. There are a wide range of applications in the field. In recent years, domestic and foreign scientific and technological workers have successively developed porous materials suitable for various application purposes (for example, silica, alumina, titanium dioxide, carbon materials, etc.), and applied them to adsorption and separati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/05
CPCC01P2002/85C01P2004/03C01P2004/80C01P2006/12C01P2006/14C01P2006/17
Inventor 韩生付宁蔺华林朱贤祝俊韦焕明冯晨萁江新泽兰国贤刘金宝喻宁波余伟萍何抗抗马文飞钱炜陈海军刘玉萍任济夫
Owner SHANGHAI INST OF TECH