METHOD FOR PRODUCING CHEMOSORBENT ABSORBENT Russian patent published in 2023 - IPC B01J20/20 B01J20/282 B01J20/32 C01B32/312 

FIELD: chemistry.

SUBSTANCE: invention relates to the production of chemisorbent absorbents based on active carbons, in particular to the production of chemisorbent absorbents for acidic (H₂S, SO₂), alkaline (NH₃ and its derivatives) gases and vapors of organic substances (C₆H₆, CCl₄), and is intended for equipping means of individual and collective respiratory protection, as well as for use in industrial exhaust gas filters. A method for obtaining an absorbent-chemisorbent of acidic, alkaline gases and vapors of organic substances is presented, including vacuuming of active carbon with a total pore volume of 0.6–1.2 cm³/g, impregnation of the vacuumized active carbon with aqueous solutions of metal salts, such as Cu⁺², Ni⁺², K⁺¹, with a coefficient of 0.6–1.0 depending on the total pore volume of active carbon, heat treatment of impregnated active carbon in a dynamic layer at the temperatures of 120–160°C.

EFFECT: invention provides reduction of manufacturing time and production of absorbents-chemisorbents with high protective characteristics for acidic, alkaline gases and vapors of organic substances.

1 cl, 4 ex