Charcoal

Charcoal is a solid fuel used for heating and cooking that is created through the process of carbonisation, which is a process where complex carbon substances - such as wood or other biomass - are broken down through a slow heating process into carbon and other chemical compounds.

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Impure form of graphitic carbon, obtained as a residue when carbonaceous material is partially burned, or heated with limited access of air.

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They are also used as catalysts in making certain chemicals (e.g., phosgene, sulfuryl chloride) or as supports for other catalytic agents.