FIELD: chemical.
SUBSTANCE: present invention pertains to coal conversion and can be used for making sorbents. The method of making active anthracite involves demineralisation of anthracite using hydrochloric acid, further demineralisation using concentrated hydrofluoric acid, chemical modification with a mixture of concentrated nitric and sulphuric acid, and thermal treatment in thermal shock mode at 800-830°C for 3 minutes.
EFFECT: increased specific surface area of coal to 1000 m2/g.
2 ex
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