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Porous carbon material and preparation and application thereof

A technology of porous carbon and raw materials, applied in the fields of nanomaterial technology and energy science, can solve the problems of low specific surface area of ​​carbon materials, equipment corrosion, etc., and achieve great application value, avoid process steps, and process clean effects.

Inactive Publication Date: 2017-01-11
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Both the existing physical activation method and chemical activation method have many defects. For example, the specific surface area of ​​the carbon material obtained by the physical activation method is usually not high, while the chemical activation method uses a large amount of acid and alkali reagents, which not only causes corrosion of the equipment, but also Introduced many acid radicals and alkali metal ions, need to neutralize waste acid waste alkali and multi-step water washing

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

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Effect test

Embodiment 1

[0035] A preparation method of a porous carbon material, comprising the following steps:

[0036] (1) Break the coconut shell into small pieces first, then put it into a high-energy ball mill, and perform ball milling at room temperature for 4 hours, that is, pulverize into micron powder;

[0037] (2) Place the micron powder prepared in step (1) under a nitrogen atmosphere with a flow rate of 600mL / min, raise the temperature to 900°C at a heating rate of 5°C / min, carbonize at a constant temperature for 9 hours, and cool down naturally to room temperature to obtain a porous carbon material .

Embodiment 2

[0039] A preparation method of a porous carbon material, comprising the following steps:

[0040] (1) The coconut shell is first broken into small pieces, then put into a high-energy ball mill, and ball milled for 1 hour at room temperature, that is, pulverized into micron powder;

[0041] (2) Place the micron powder prepared in step (1) under a nitrogen atmosphere with a flow rate of 600mL / min, raise the temperature to 900°C at a heating rate of 5°C / min, carbonize at a constant temperature for 6 hours, and cool down naturally to room temperature to obtain the porous carbon material.

Embodiment 3

[0043] A preparation method of a porous carbon material, comprising the following steps:

[0044] (1) The coconut shell is first broken into small pieces, then put into a high-energy ball mill, and ball milled for 6 hours at room temperature, that is, pulverized into micron powder;

[0045] (2) Place the micron powder prepared in step (1) under a nitrogen atmosphere with a flow rate of 600mL / min, raise the temperature to 900°C at a heating rate of 5°C / min, carbonize at a constant temperature for 12 hours, and cool down naturally to room temperature to obtain the described Porous carbon materials.

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Abstract

The invention relates to a porous carbon material and preparation and application thereof. The preparation method of the porous carbon material comprises the steps of grinding the carbon raw material into micrometer powder, feeding the micrometer powder into the inert gases and heating to 800 to 1000 DEG C, and carbonizing for 6 to 19 hours to acquire the porous carbon material with high surface area. The preparation method provided by the invention can prepare a carbon material with high surface area and high pore capacity which possesses the micro-nano structure and can be directly used to the energy storage, adsorbing and medical purposes; further the preparation method provided by the invention doesn't require any chemical reagent and at the same time avoids the complex physical or active chemical processing. The operation is simple. The invention is an environment-friendly and clean preparation method.

Description

technical field [0001] The invention relates to the fields of nanometer material technology and energy science, in particular to a porous carbon material and its preparation method and application. Background technique [0002] Due to the advantages of high specific surface area, good skeleton electrical conductivity, adjustable pore structure, stable physical and chemical properties, and adjustable surface chemical properties, porous carbon materials play an irreplaceable and important role in the fields of energy, catalysis, adsorption, separation, and the environment. Designing and preparing nanoporous carbon materials with a highly developed porous structure is one of the major challenges in the field of porous carbon materials, and it is also the key to breaking through the application performance of porous carbon materials. [0003] Activation is the most common and ancient method for preparing porous carbon materials. Activation methods include physical activation an...

Claims

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Application Information

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IPC IPC(8): C01B32/05
CPCC01P2006/40C01P2006/12C01P2006/14C01P2006/17
Inventor 吴丁财林羲栋梁业如符若文
Owner SUN YAT SEN UNIV
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