Porous carbon material and preparation and application thereof

A porous carbon material, multi-level porous technology, applied in the preparation/purification of carbon, etc., can solve the problems of increased production cost, low graphitization layer, and high price of template agent

Active Publication Date: 2016-06-22
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the template agent increases the process flow, and the price of the template agent is higher, which greatly increases the production cost
Moreover, the degree of g

Method used

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  • Porous carbon material and preparation and application thereof
  • Porous carbon material and preparation and application thereof
  • Porous carbon material and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0031] (a) Add melamine, glucose and nickel sulfate in a molar ratio of 30:1:0.005 to water at 95°C to obtain a mixed solution, add sodium phosphate whose amount is 0.3 times the amount of melamine to the mixed solution, and stir until the dissolution is complete, Dry by rotary evaporation to obtain precipitate;

[0032] (b) Place the precipitate obtained in step (a) in a tube furnace, under the protection of nitrogen, raise the temperature to 500°C at 10°C / min, keep it warm for 1 hour, then raise the temperature to 950°C at 10°C / min, and keep it warm for 3 hours, a composite of carbon material and metal nickel is obtained;

[0033] (c) Pickling the composite obtained in step (b) at 80° C. in 1M sulfuric acid solution for 2 hours, washing with a large amount of deionized water, and air-drying to obtain a porous carbon material.

[0034] The size of a single prismatic block of the porous...

Embodiment 2

[0042] A method for preparing a porous carbon material, comprising the following steps,

[0043] (a) Add melamine, glucose and nickel citrate with a molar ratio of 40:1:0.0025 to water at 95°C to obtain a mixed solution, add the same amount of ammonium phosphate to the mixed solution, stir until it is completely dissolved, and dry by rotary evaporation to obtain Precipitate;

[0044] (b) Place the precipitate obtained in step (a) in a tube furnace, under the protection of nitrogen, raise the temperature to 500°C at 5°C / min, keep it warm for 1 hour, then raise the temperature to 1000°C at 5°C / min, and keep it warm for 3 hours, a composite of carbon material and metal nickel is obtained;

[0045] (c) Pickling the compound obtained in step (b) at 80° C. in 1M hydrochloric acid solution for 0.5 hours, washing with a large amount of deionized water, and air-drying to obtain a porous carbon material.

[0046] The size of a single prismatic block of the porous carbon material obtai...

Embodiment 3

[0048] A method for preparing a porous carbon material, comprising the following steps,

[0049] (a) Add melamine, glucose and nickel chloride with a molar ratio of 80:1:0.01 to water at 95°C to obtain a mixed solution, add the same amount of phosphoric acid to the mixed solution, stir until the solution is complete, and then dry it by rotary evaporation to obtain a precipitate thing;

[0050] (b) Place the precipitate obtained in step (a) in a tube furnace, under the protection of nitrogen, raise the temperature to 450°C at 3°C / min, keep the temperature for 3 hours, then raise the temperature to 850°C at 10°C / min, and keep the temperature for 2 hours, a composite of carbon material and metal nickel is obtained;

[0051] (c) Pickling the compound obtained in step (b) at 80° C. in 1M hydrochloric acid solution for 2 hours, washing with a large amount of deionized water, and air-drying to obtain a porous carbon material.

[0052] The size of a single prismatic block of the por...

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Abstract

The invention relates to porous carbon and its preparation method. Specifically, the carbon material has a prismatic block shape from macroscopic view, and the size of a single block body is 5-20 m (side length of the prism). The single-block material has a hierarchical porous structure, including macropores of 50-300 nm, a mesoporous structure of 2-10 nm and micropores of less than 2 nm. The macropore structure is composed of three-dimensional graphene wall, and the mesopores and the micropores are composed of holes in the graphene wall. Nitrogen and phosphor are doped in crystal lattice of the carbon material, wherein doping concentration of nitrogen is 0.5-15.5%, and doping concentration of phosphor is 0.5-8.5%. The material is formed by in situ polymerization of a soft template and metal under catalytic dual effects. The material has potential application value in fields of catalysis, energy storage, adsorption and the like.

Description

technical field [0001] The invention belongs to the field of advanced carbon materials. Specifically, the invention relates to a porous carbon material and a preparation method thereof. Background technique [0002] Porous carbon materials have the characteristics of high chemical stability and high specific surface area, and are widely used as catalyst supports, energy storage materials, gas adsorption materials and organic pollutant adsorption materials in chemical industry, energy storage, catalysis and other fields. [0003] The pore structure of porous carbon materials can be divided into micropores, mesopores and macropores according to the pore size. These pore structures exhibit different functions in specific applications. For example, the porous carbon material of the supercapacitor material, its macropore mainly plays the function of storing the electrolyte solution, the mesopore mainly plays the role of conducting the electrolyte, and the micropore provides the ...

Claims

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Application Information

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IPC IPC(8): C01B31/02C01B32/05
Inventor 孙公权金具涛姜鲁华
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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