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Method for preparing medium pore carbon of narrow aperture and high degree of graphitization

A technology of graphitization degree and narrow pore size, which is applied in the field of porous carbon preparation, can solve the problems of high product cost, complicated preparation process, and wide product pore size distribution, and achieve the effect of low product cost and narrow pore size distribution

Inactive Publication Date: 2007-08-08
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, this process requires the pre-preparation of porous carbon by inorganic template method, the preparation process is complicated, the product cost is high, and the final product has a wide pore size distribution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add magnesium nitrate to the ethanol solution of thermosetting phenolic resin, the mass ratio of magnesium nitrate to thermosetting phenolic resin is 0.1:1, remove the solvent, cure at 80°C for 0.1h, carbonize at 500°C for 0.1h under an inert atmosphere, wash with nitric acid until detection Products are obtained without metal elements. Product performance indicators are shown in Table 1.

Embodiment 2

[0019] Add nickel nitrate to pitch toluene solution, the mass ratio of nickel nitrate to pitch is 2:1, remove the solvent, solidify at 200°C for 1 hour, carbonize at 900°C for 1 hour in an inert atmosphere, wash with hydrochloric acid until no metal elements are detected to obtain the product . Product performance indicators are shown in Table 1.

Embodiment 3

[0021] Add ferric nitrate into the dimethyl sulfoxide solution of polyacrylonitrile, the mass ratio of ferric nitrate to polyacrylonitrile is 6:1, remove the solvent, cure at 400°C for 5h, carbonize at 1200°C for 3h in an inert atmosphere, pickle with sulfuric acid The product is obtained until no metal elements are detected. Product performance indicators are shown in Table 1.

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PUM

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Abstract

The invention discloses a making method of narrow-aperture high-graphitizing degree middle-hole carbon, which comprises the following steps: allocating metal compound and carbon primer with weight rate at 0.1-6:1; dissolving metal compound in the solution with carbon primer; stripping solvent; solidifying in the air for 0.1-20h under 80-400 deg.c; charring for 0.1-3h under inert gas at 500-1200 deg.c; proceeding acid washing until the metal element is not detected; obtaining the product.

Description

technical field [0001] The invention belongs to a method for preparing porous carbon, in particular to a method for preparing porous carbon with narrow pore size distribution and high degree of graphitization. Background technique [0002] Porous carbons are widely used in adsorption, catalyst support, chromatographic column separation, and supercapacitor electrodes due to their high specific surface area, abundant pores, and acid and alkali resistance. A narrow pore size distribution is crucial to improve adsorption, column separation efficiency, and utilization efficiency of supercapacitors. Meanwhile, high electrical conductivity is also indispensable for the application of supercapacitors. The preparation methods of porous carbon mainly include physical activation method, chemical activation method, catalytic activation method and template method. Physical activation method, chemical activation method and catalytic activation method can prepare porous carbon with high ...

Claims

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Application Information

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IPC IPC(8): C01B31/02
Inventor 刘朗唐志红宋燕史景利郭全贵
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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