POROUS CARBON MATERIALS, SMOKING DEVICES AND FILTERS THEREOF CONTAINING SUCH MATERIALS Russian patent published in 2010 - IPC A24D3/16 

FIELD: food industry, tobacco.

SUBSTANCE: porous carbon material is intended for addition to smoke-arresting cigarette filters and has a BET surface area equal to at least 800 m²/g and a porous structure containing mezopores and micropores. The volume of the pores measured by nitrogen absorption is at least 0.9 cm³/g with 15 - 65% of the pores volume falling to the share of mezopores. The material porous structure ensures volumetric density is generally less than 0.5 g/cm³. The material may be produced by way of carbonisation and activation of organic resins and may be shaped in the form of balls for simple handling.

EFFECT: creation of a porous carbon material especially efficient for reduction of content of one or several harmful components of tobacco smoke.

43 cl, 18 dwg, 7 tbl