Modified active carbon capable of absorbing electromagnetic waves and preparation method thereof

A technology for absorbing electromagnetic waves and activated carbon, applied in chemical instruments and methods, other chemical processes, alkali metal oxides/hydroxides, etc. The effect of large specific surface area

Inactive Publication Date: 2014-02-12
BENGBU HUAFANG FILTER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of these adsorbents have limited adsorption capacity, and different adsorbents need to be studied according to different requirements to play the best role.

Method used

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Examples

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Embodiment Construction

[0011] An electromagnetic wave-absorbing modified activated carbon, made of the following raw materials in parts by weight (kg): wheat bran 28, activated carbon 106, calcium sulfite 13, nano-titanium dioxide 4, bentonite 9, cetyltrimethylammonium bromide 7 , dodecylamine 3, polyvinyl alcohol 6, tetraethyl orthosilicate 4, silicon dioxide powder 9, zinc stearate 7, modified diatomite 5, appropriate amount of water;

[0012] The modified diatomite is made of the following raw materials in parts by weight (kg): diatomite 125, sepiolite 11, nano-carbon 1.5, clove oil 2.5 ascorbic acid 1.5, sodium alginate 2.6, kaolin 33, gynostemma powder 3.5 The preparation method is to put diatomite and sepiolite into a calciner and calcinate at 550°C for 3.5 hours, take it out, soak it in 14% hydrochloric acid solution for 4 hours, filter it out, wash it repeatedly with clear water, and dry it. Add water, at the same time, add nano-carbon, ascorbic acid, kaolin, grind to obtain slurry, spray dr...

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PUM

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Abstract

The invention relates to modified active carbon capable of absorbing electromagnetic waves. The modified active carbon is prepared by the following raw materials in parts by weight: 25 to 30 parts of wheat bran, 100 to 110 parts of active carbon, 10 to 15 parts of calcium sulfite, 3 to 5 parts of nano titanium dioxide, 8 to 10 parts of bentonite, 5 to 8 parts of cetyl trimethyl ammonium bromide, 2 to 4 parts of lauryl amine, 4 to 7 parts of polyving alcohol, 3 to 5 parts of tetraethoxysilane, 8 to 10 parts of silicon dioxide powder, 5 to 8 parts of zinc stearate, 4 to 5 parts of modified diatomite and an appropriate amount of water. The active carbon which is produced by utilizing the wheat bran has a developed porous structure, large specific surface area and high adsorption speed, and the character of the single active carbon can be changed; by utilizing the nano titanium dioxide, the electromagnetic waves can be absorbed; by utilizing the bentonite, the catalytic performance and the adhesion performance can be improved; by utilizing the polyving alcohol, the adhesive force is increased, and difficulty in disintegration is realized; meanwhile, by utilizing the calcium sulfite, the chloride can be removed. The modified active carbon has multiple functions, is wide in use and can be used for purifying the daily air and the water and also can be used for the industry.

Description

technical field [0001] The invention relates to the field of modified functional materials, in particular to a modified activated carbon for absorbing electromagnetic waves and a preparation method thereof. Background technique [0002] With the development of science and technology and the gradual construction of modern industries, various chemicals have been developed and utilized, which has brought convenience to people's lives. The problem. [0003] At present, the pollutants in the air are mainly the gas produced by industrial fuel combustion, automobile exhaust, and toxic and harmful gases produced in production. Water pollution is mainly due to the fact that the sewage discharged from industrial production contains a large amount of toxic substances, and the sewage produced in people's daily life produces many harmful substances. There are many times in people’s lives that people need to remove toxins. For example, there are many bacteria and toxins on the filter sc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30
Inventor 陈登宇
Owner BENGBU HUAFANG FILTER
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