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Molecular formula : C
MW : 12.011
CAS No. :7440-44-0
nature : black powder or granular porous crystalline. Boiling Point 4827 ° C 3652 ° Csublimation, the relative density of about +, the relative density of about 0.08-0.45.
preparation methods : Activated carbon is used wood chips, leaf, charcoal, pericarps, coal and other raw materials, through carbonization and activation made. First carbon materials in the air under the conditions of isolation and heated, remove volatile (part of tar and water), to form porous carbon materials, and further activation of two types : 1. Steam, gas is more commonly used in the activation of activator is carbon dioxide and water vapor. 2. Chemical activation method of activating agent carbonate, sulfate, nitrate, etc., they can produce high-temperature gases (such as carbon dioxide, oxygen); Also available nitric acid, sulfuric acid, phosphoric acid and other acids oxidants. Using the solution of zinc chloride concentration of carbon materials have been widely used. Zinc chloride, raw material consumption (kg / t) 500 Sawdust 3900 zinc chloride hydrochloride (31%) 750
purposes : activated carbon used mainly for the following aspects. 1. For example, the use of gas purification containing activated carbon from the air solvent vapor recovery of solvents; Use of activated carbon filter air deodorizer; Or for industrial gas masks and respirators, to guard against such a poison. 2. Gas separation from the city such as the recovery of benzene gas, gas recovery from gasoline, propane and butane, for dealing with Fischer-Tropsch Synthesis of emissions to recover the hydrocarbon type. 3. For example, in the liquid adsorption sugar industry using activated carbon adsorption make sugar bleaching, the chemical industry using activated carbon to make organic material bleaching using activated carbon electroplating bath purification of organic impurities, in order to ensure the quality of surface plating or for wastewater from phenol. 4. Catalyst Catalyst Carrier or such as that used for industrial gas desulphurization and phosgene production of the catalyst. Therefore, the widely used activated carbon sugar, alcohol processing, oil refining, pharmaceuticals, reagents, metals, water purification, environmental protection, recycling solvent vapor and other various aspects.
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