AMMONIA SLIP CATALYST Russian patent published in 2018 - IPC B01J23/44 B01J23/38 B01J23/72 B60K13/04 F01N3/10 

FIELD: environmental protection.

SUBSTANCE: disclosed is a catalyst product for treatment of exhaust gas, comprising a substrate having a first catalyst layer placed on and/or inside the substrate, and a second catalyst layer deposited on top of the first catalyst layer; wherein the first catalyst layer contains a first oxidation catalyst, which is supported palladium, and the second catalyst layer contains a mixture (I) of a second oxidation catalyst consisting of supported palladium, and (II) a catalyst for selective reduction of NO_X and/or accumulation of NH₃, the second catalyst for selective reduction of NO_X and/or accumulation of NH₃ is a zeolite loaded with Fe and/or Cu; and in which the first and second oxidation catalysts are different compounds. Also disclosed is a system (versions) for treatment of exhaust gas and a method of treating exhaust gas.

EFFECT: catalyst which exhibits significantly better performance in terms of CO conversion compared to a catalyst that does not contain Pd in the upper layer.

12 cl, 8 dwg, 2 ex, 1 tbl