NATURAL SCHUNGITE-BASED CIGARETTE SORBENT AND A METHOD FOR PREPARATION THEREOF Russian patent published in 2007 - IPC A24D3/06 B01J20/20 B01J20/30 

FIELD: tobacco industry.

SUBSTANCE: cigarette sorbent is composed of, wt %: carbon 28.0-36.0, potassium 1.2-2.6, aluminum 2.6-3.3, manganese 0.05-4.7, titanium 0.22-0.4, calcium 0.13-0.17, silicon 18.0-24.0, sodium 0.2-0.51, and oxygen 30.0-38.6. Preparation of sorbent involves preliminarily crushing schungite to predetermined size and separating fraction having required granulometric composition, which fraction is further modified by chemical activation consisting in boiling the fraction in 15-35% sodium hydroxide solution for 30 to 180 min followed by filtration of modified schungite, washing with distilled water to pH 7-10, drying at 104-106°C, and recrushing.

EFFECT: increased catalytic activity.

5 cl, 1 dwg, 2 tbl, 5 ex