CATALYST-ADSORBER OF NO Russian patent published in 2021 - IPC B01J23/63 B01J23/42 B01J23/44 B01J23/40 B01D53/94 

FIELD: emission purification.

SUBSTANCE: invention relates to a composition of a catalyst-adsorber of NO_x containing a carrier and a mixture or alloy of platinum and palladium located on this carrier, where the carrier contains a NO_x preservation amplifier, where the NO_x preservation amplifier is selected from a group consisting of samarium, gadolinium, holmium or oxides thereof, and where the carrier is cerium oxide. The invention also relates to a catalyst-adsorber of NO_x, an emission purification system for purifying the flow of combustion exhaust gas, a method for purifying exhaust gas from an internal combustion engine.

EFFECT: development of compositions of a catalyst-adsorber of NO_x, which have improved parameters of low-temperature preservation of NO_x and, in certain embodiments, are more easily activated by preliminary reduction and retain this activation after contact with oxidizing conditions.

11 cl, 7 tbl, 4 ex