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What is activated carbon?

2017-08-04 17:25      ?hits:
Activated carbon is a black powder, granular or pellet or amorphous with porous carbon. The main components are carbon, and contain a small amount of oxygen, hydrogen, sulfur, nitrogen and chlorine. It mainly has wood, fruit shell, coal and other high temperature activation. The carbon element is the most stable element in nature, and the active carbon also has this characteristic. The pore structure of activated carbon is developed, with a large surface area (500 ~ 1000m 2 / gram), even higher, with a strong physical adsorption capability, which can adsorb gas, liquid or colloidal solids. For gases and liquids, the mass of the adsorption material can be close to the quality of the activated carbon itself. The adsorption effect is selective, and non-polar material is more adsorptive than polar material. In the same series of substances, the higher the boiling point is, the more likely it is to be adsorbed. The higher the pressure, the lower the temperature, the higher the concentration, the larger the absorption. Conversely, the decompression and heating are beneficial to the gas desorption. Activated carbon used in gas adsorption, separation and purification, solvent recovery, liquid sugar, petroleum oil, glycerin, drugs, drinking water and refrigerator deodorant, gas masks in the filter agents, air purification, can also be used as catalyst or carrier of the metal salt catalysts, etc.

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