METHOD OF PREPARING MODIFIED ACTIVATED CARBON Russian patent published in 2006 - IPC C01B31/08 B01J20/20 

FIELD: carbon materials.

SUBSTANCE: invention provides a three-step method for modifying industrial activated carbon. In the first step, activated carbon is treated for 12 -24 h with ε-caprolactam aqueous solution under static conditions. Then, activated carbon is filtered, dried, and heated at 250°C in air atmosphere. Finally, it is subjected to carbonization by heating to 900°C in inert gas (argon or nitrogen) flow.

EFFECT: increased sorption capacity relative to organic compounds and heavy metal ions.

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