Activated carbon is prepared by pyrolysis and activation processing of carbon-containing raw materials such as wood, coal, and petroleum coke. It has developed a pore structure, large specific surface area, and abundant surface chemical groups, and has strong specific adsorption capacity. The collective term for carbon materials.
Usually powdered or granular porous amorphous carbon with strong adsorption capacity. Carbonized by solid carbonaceous materials (such as coal, wood, hard nutshells, fruit cores, resins, etc.) at a high temperature of 600-900 ℃ under the isolation of air, and then use air, carbon dioxide, water vapor, or steam at 400-900 ℃ The mixed gas of the three is obtained after oxidation activation.