A new high-efficiency filter material for purification of the air in enclosed spaces is created. Sorbent, as in the form of small and large particles, has a large specific surface, which makes it possible to use it to capture toxicants from water and air, and the sorption characteristics of the latter remain high. The physical-mechanical (abrasion, grindability, "conventional mechanical strength") and the adsorption structure (porosity, sorption activity of iodine, of benzene, lightening capacity for methylene blue, ash content, total porosity) characteristics of the sorbent are studied. The adsorption of hydrogen sulfide, sulfur dioxide and carbon dioxide from the atmosphere is studied. The results were used to calculate the thermodynamic and equilibrium sorption properties of a number of toxicants on sorbent. According to the experimental results of the adsorption of acid gases from the air thermodynamic characteristics, indicating the formation of adsorption complexes of high durability are obtained. Found that 1 gram of sorbent can absorb 640 mg of sulfur dioxide, hydrogen sulfide 300 mg and 350 mg of carbon dioxide that can be recommended sorbent for purification of the air in enclosed spaces