METHOD OF PRODUCING SORBENT FOR ACID GAS ABSORPTION Russian patent published in 2019 - IPC B01J20/08 B01J20/02 B01J20/32 

FIELD: chemistry.

SUBSTANCE: invention relates to production of an absorber having high adsorption capacity on nitrogen oxides in the presence of organic vapours. Proposed method comprises preparation of impregnating solution, impregnation of porous carrier, curing and thermal treatment. Porous base used is active aluminium oxide with total pore volume of 0.4–0.8 cm³/g, impregnating solution contains potassium permanganate, impregnation is carried out at ratio of porous carrier taken in kg to solution in dm³, equal to 1:(0.6–0.8). Formation is carried out for 30–60 minutes. Heat treatment is carried out at temperature of 50–60 °C with holding for 2–3 hours, and then continuing heat treatment at 95–105 °C for 1–2 hours.

EFFECT: method enables to obtain a nitrogen oxide absorber having dynamic presence in the presence of organic vapours (such as benzene) 1,5–3,3 times greater than known types of absorbers.

1 cl, 3 ex