Preparation method of honeycomb porous carbon material

A porous carbon material and honeycomb-shaped technology, which is applied in the field of preparation of honeycomb porous carbon materials, can solve problems such as high production energy consumption, large environmental pollution, and complex waste water and waste gas treatment, and achieve simple operation, reduced process flow, and good application foreground effect

Inactive Publication Date: 2020-01-10
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It has the disadvantages of high production energy consumption, complex waste water and waste gas treatment, and large environmental pollution

Method used

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  • Preparation method of honeycomb porous carbon material
  • Preparation method of honeycomb porous carbon material
  • Preparation method of honeycomb porous carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In one of the embodiments of the preparation method of a honeycomb porous carbon material of the present invention, measure 100 mL of lard, heat it to 120 ° C, put 5 g of glutinous rice in the oil solution, and heat the oil For dry frying, transfer the above-mentioned glutinous rice with increased volume after frying to a high-temperature tube furnace, under Ar atmosphere, at 5 ℃∙min -1 The heating rate was increased to 750 °C, and the temperature was kept constant for 60 min. After cooling, it was washed with distilled water to remove impurities, and centrifugally dried to obtain a honeycomb porous carbon material.

[0035] The physical and chemical properties of the prepared porous carbon materials were characterized by scanning electron microscopy and X-ray diffraction. The results are as follows: figure 1 with figure 2 As shown, the supercapacitor performance test was carried out on the prepared porous carbon material, and the results were as follows image 3 sho...

Embodiment 2

[0037] In one of the embodiments of the preparation method of a honeycomb porous carbon material of the present invention, measure 100 mL of peanut oil, heat it to 150 ° C, put 10 g of rice in the oil solution, and dry it in hot oil Fried, the above-mentioned fried rice with increased volume was transferred to a high-temperature tube furnace, under Ar atmosphere, at 10 ℃∙min -1 The heating rate was increased to 800 °C, and the temperature was kept constant for 90 minutes. After cooling, it was washed with distilled water to remove impurities, and centrifugally dried to obtain a honeycomb porous carbon material.

Embodiment 3

[0039] In one of the embodiments of the preparation method of a honeycomb porous carbon material of the present invention, measure 100 mL of soybean oil, heat it to 180 ° C, put 15 g of shrimp chips in the oil solution, and heat the oil For dry frying, transfer the above-mentioned glutinous rice with increased volume after frying to a high-temperature tube furnace, and heat it at 15 ℃∙min -1 The heating rate was increased to 850 °C, and the temperature was kept constant for 120 min. After cooling, it was washed with distilled water to remove impurities, and centrifugally dried to obtain a honeycomb porous carbon material.

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Abstract

The invention relates to a preparation method of a honeycomb porous carbon material. Biomass is used as a raw material, the raw material is instantaneously expanded and converted into an expanded three-dimensional reticular porous substance due to rapid evaporation of moisture in the raw material in the high-temperature expansion process, and then the expanded three-dimensional reticular porous substance is subjected to high-temperature carbonization to obtain the porous carbon material. The biomass is expanded by utilizing the high-temperature expansion process to achieve the purpose of opening holes and avoid the subsequent activation step of the porous carbon material in the preparation process. The method is economical and environmentally friendly; the obtained honeycomb porous carbonmaterial has a large specific surface area, rich pore structures and moderate pore size distribution; and the prepared honeycomb porous carbon material has a good application prospect as an electrodematerial for a double-electric layer capacitor.

Description

technical field [0001] The invention relates to the technical field of carbon materials, in particular to a method for preparing a honeycomb porous carbon material. Background technique [0002] Due to their controllable surface area, multidimensional and complex pore structure, good electrical conductivity, and low cost, porous carbon materials have attracted close attention and are widely used in gas separation, water purification, catalytic chromatography, energy storage and photocatalysis. Compared with traditional fossil energy sources, biomass has been widely used in the preparation of precursors of porous carbon materials in recent years due to its abundant sources and renewable green characteristics. In the prior art, biomass porous carbon materials are usually prepared by carbonizing biomass raw materials at high temperature under an inert atmosphere, and then using chemical activation, physical activation or physical-chemical activation process to obtain porous ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05
CPCC01B32/05
Inventor 欧阳田李生杰陈核章
Owner HUNAN UNIV OF SCI & TECH
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