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Preparation method of coal-based mesoporous activated carbon

A kind of mesoporous activated carbon, coal-based mesoporous technology, applied in chemical instruments and methods, bulk chemical production, inorganic chemistry, etc., can solve the problems of low mesoporosity, efficient utilization of coal that does not reflect energy materials, etc., and achieve high mesoporous Effects of porosity, high specific surface area, and high adsorption value

Active Publication Date: 2019-11-15
新疆同力和环材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of coal to prepare mesoporous activated carbon has the advantages of rich resources and excellent preparation effects, but the mesoporous activated carbon prepared in the prior art has problems such as low mesoporosity, which leads to the fact that the preparation of activated carbon from coal does not reflect the efficient utilization of coal as an energy material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method of coal-based mesoporous activated carbon, comprising the following steps:

[0024] Step 1, pulverizing raw coal to obtain coal powder, adding coal powder, activator, ethanol and ball milling balls into a planetary ball mill for ball milling to obtain a mixed material; the activator is ammonium nitrate; the mixture of the coal powder and the activator The mass ratio is 1:0.5; the mass ratio of the pulverized coal to ethanol is 1:2; the ball milling ball is made of silicon carbide; the ball milling ball includes large balls, medium balls and small balls, and the diameter of the large ball is 12mm , the diameter of the medium ball is 8mm, the diameter of the small ball is 5mm, the mass ratio of the large ball, the medium ball and the small ball is 7:5:3; the mass ratio of the ball to the pulverized coal is 25:1, and the mixing time of the ball mill is 5h, the ball milling speed is 300r / min;

[0025] Step 2: Perform activation treatment on the mixed m...

Embodiment 2

[0029] A preparation method of coal-based mesoporous activated carbon, comprising the following steps:

[0030] Step 1, pulverizing raw coal to obtain coal powder, adding coal powder, activator, ethanol and ball milling balls into a planetary ball mill for ball milling to obtain a mixed material; the activator is ammonium nitrate; the mixture of the coal powder and the activator The mass ratio is 1:1; the mass ratio of the pulverized coal to ethanol is 1:3; the milling ball is made of silicon carbide; the milling ball includes a large ball, a medium ball and a small ball, and the diameter of the large ball is 12mm , the diameter of the medium ball is 8mm, the diameter of the small ball is 5mm, the mass ratio of the large ball, the medium ball and the small ball is 7:5:3; 5h, the ball milling speed is 300r / min;

[0031] Step 2: Activate the mixed material after ball milling under a nitrogen atmosphere to obtain the activated material. The heating process of the activation trea...

Embodiment 3

[0035] A preparation method of coal-based mesoporous activated carbon, comprising the following steps:

[0036] Step 1, pulverizing the raw coal to obtain coal powder, adding coal powder, activator, ethanol and ball milling balls into a planetary ball mill for ball milling to obtain a mixed material; the activator is ammonium nitrate; the mixture of the coal powder and the activator The mass ratio is 1:1.5; the mass ratio of the pulverized coal to ethanol is 1:4; the ball milling ball is made of silicon carbide; the ball milling ball includes large balls, medium balls and small balls, and the diameter of the large ball is 12mm , the diameter of the medium ball is 8mm, the diameter of the small ball is 5mm, the mass ratio of the large ball, the medium ball and the small ball is 7:5:3; the mass ratio of the ball milling ball to the coal powder is 20:1, and the mixing time of the ball milling is 4h, the ball milling speed is 250r / min;

[0037]Step 2: Activate the mixed material ...

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Abstract

The invention discloses a preparation method of coal-based mesoporous activated carbon. The preparation method comprises the following steps: crushing raw coal to obtain pulverized coal, adding the pulverized coal, an activator, ethanol and a ball-milling ball into a planetary ball mill, and performing ball milling to obtain a mixture; activating the bal-milled mixture in a nitrogen atmosphere toobtain an activated material; adding the activated material into a supercritical device, soaking the activated material in a supercritical acetone-water system, then filtering, washing and drying theobtained system, adding the dried material into an alkaline solution, and performing ultrasonic soaking; and filtering and drying the ultrasonically soaked material, placing the dried material in a sealed glass tank, irradiating the material with an electron beam irradiation device, washing the irradiated material with water, and drying the washed material to obtain the coal-based activated carbon. The coal-based mesoporous activated carbon obtained by the preparation method has a high specific surface area and a high mesoporosity, and has a high adsorption value for methylene blue.

Description

technical field [0001] The invention belongs to the technical field of activated carbon preparation, in particular to a method for preparing coal-based mesoporous activated carbon. Background technique [0002] Activated carbon is a carbonaceous adsorption material with rich pore structure and huge specific surface area. It has the advantages of strong adsorption and good chemical stability. It is widely used in industry, agriculture, national defense, transportation, medicine and health, environmental protection, etc. In recent years, with the increasing requirements for environmental protection, the demand for activated carbon at home and abroad is increasing, and the development of activated carbon is also becoming more and more rapid. In particular, the development of coal-based activated carbon is due to the abundant reserves of coal resources and low cost on the one hand, and the maturity and progress of coal-based activated carbon technology on the other hand, which m...

Claims

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Application Information

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IPC IPC(8): C01B32/348C01B32/342
CPCC01B32/342C01B32/348Y02P20/54
Inventor 张彦龙高利珍李俊杰高卓
Owner 新疆同力和环材科技有限公司
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