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Preparation method of halloysite-carbon composite adsorbent for removing NO

A technology of carbon composite and adsorbent, applied in separation methods, chemical instruments and methods, alkali metal compounds, etc., to achieve the effects of enriching alkaline sites, reducing specific surface area, and simple operation

Active Publication Date: 2016-10-12
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, halloysite and chitosan have been used to prepare halloysite / carbon composite adsorbents with high specific surface area for the adsorption of NO.

Method used

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  • Preparation method of halloysite-carbon composite adsorbent for removing NO
  • Preparation method of halloysite-carbon composite adsorbent for removing NO

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In this example, the halloysite / charcoal composite adsorbent was prepared as follows:

[0023] (1) Crush the original halloysite ore and pass through a 300-mesh sieve to obtain halloysite powder;

[0024] (2) Weigh 8g of potassium carbonate powder and dissolve in 60mL of deionized water to obtain a potassium carbonate solution; respectively weigh 2g of halloysite powder and 4g of chitosan, add to the potassium carbonate solution, immerse and stir for 4h, and dry at 105°C After obtaining the mixture material.

[0025] (3) Put the mixture in a horizontal tube sintering furnace, N 2 In the atmosphere, the temperature is increased to 800°C at a rate of 5°C / min, and the temperature is kept and activated for 90 minutes. After cooling to room temperature, a black product is obtained;

[0026] (4) Wash the black product with 0.1 mol / L hydrochloric acid solution to remove the residual activator, and then wash the sample with 60° C. deionized water to neutrality. The washed sample is d...

Embodiment 2

[0037] In this example, the halloysite / charcoal composite adsorbent was prepared as follows:

[0038] (1) Crush the original halloysite ore and pass through a 300-mesh sieve to obtain halloysite powder;

[0039] (2) Weigh 8g of potassium carbonate powder and dissolve in 60mL of deionized water to obtain a potassium carbonate solution; respectively weigh 2g of halloysite powder and 4g of chitosan, add to the potassium carbonate solution, immerse and stir for 4h, and dry at 105°C After obtaining the mixture material.

[0040] (3) Put the mixture in a horizontal tube sintering furnace, N 2 In the atmosphere, the temperature is increased to 800°C at a rate of 5°C / min, and the temperature is kept for 120min. After cooling to room temperature, a black product is obtained;

[0041] (4) Wash the black product with 0.1 mol / L hydrochloric acid solution to remove the residual activator, and then wash the sample with 60° C. deionized water to neutrality. The washed sample is dried at 105°C and ...

Embodiment 3

[0045] In this example, the halloysite / charcoal composite adsorbent was prepared as follows:

[0046] (1) Crush the original halloysite ore and pass through a 300-mesh sieve to obtain halloysite powder;

[0047] (2) Weigh 8g of potassium carbonate powder and dissolve it in 60mL of deionized water to obtain a potassium carbonate solution; respectively weigh 2g of halloysite powder and 4g of chitosan, add to the potassium carbonate solution, immerse and stir for 4h, and dry at 105°C After obtaining the mixture material.

[0048] (3) Put the mixture in a horizontal tube sintering furnace, N 2 Under the atmosphere, the temperature is increased to 800°C at a rate of 5°C / min, and the temperature is kept and activated for 150 minutes. After cooling to room temperature, a black product is obtained;

[0049] (4) Wash the black product with 0.1 mol / L hydrochloric acid solution to remove the residual activator, and then wash the sample with 60° C. deionized water to neutrality. The washed samp...

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Abstract

The invention discloses a preparation method of a halloysite-carbon composite adsorbent for removing NO. The halloysite-carbon composite adsorbent is prepared by taking cheap halloysite and chitosan as raw materials and taking potassium carbonate free of pollution to the environment as an activating agent through one-step carbonization and activation. According to the absorbent, the specific area can reach 1,500 m<2> / g or above, a developed micropore and mesopore structure is achieved, and the certain mechanical strength is achieved; the raw material source is wide, the cost is low, a preparation technology is simple, and the good adsorption capacity to nitric oxide is achieved.

Description

Technical field [0001] The invention relates to a method for preparing an adsorbent for removing NO, in particular to a method for preparing a halloysite / carbon composite adsorbent. Background technique [0002] With the rapid development of industry, the need for treatment of industrial waste gas has become more and more urgent. Nitrogen oxide is the main substance of air pollution, which can destroy the ozone layer, form acid rain and photochemical smog, and seriously endanger the ecological environment and human health. The main component of nitrogen oxides is NO, so the removal of nitrogen oxides, especially the removal of NO, is of great significance. At present, the techniques for removing NO include reduction method, adsorption method, plasma method, microbial method and so on. Among them, the reduction method is the most widely used, but most of the method is applied to various high-concentration emission sources such as thermal power plants. At the same time, a large a...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01D53/02
Inventor 吴雪平张清心张先龙
Owner HEFEI UNIV OF TECH
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