EXTRUDED CATALYST WITH CELL STRUCTURE Russian patent published in 2022 - IPC B01J23/70 B01J23/30 B01J29/76 B01J29/85 B01J29/80 B01J35/04 B01J37/02 B01J37/04 B01D53/94 

FIELD: chemistry.

SUBSTANCE: invention relates to an extruded catalyst with a cell structure for nitrogen oxide reduction according to a method for selective catalytic reduction (hereinafter – SCR) in exhaust gases from cars. The catalyst contains an extruded active carrier in the form of a cell structure, containing the first catalytically active component for SCR, and a set of channels, through which exhaust gases flow during functioning, and porous oxide coating (washcoat) containing the second catalytically active component for SCR, applied to an extruded base. The first catalytically active component and the second catalytically active component, each independently, are selected from a group consisting of: (i) a vanadium catalyst with vanadium as a catalytically active component; (ii) a mixed oxide catalyst with one or several oxides, in particular transition metal or lanthanide oxides, as a catalytically active component; and (iii) Fe- or Cu-zeolite catalyst. At the same time, if the first catalytically active component is Cu-zeolite catalyst, then the second catalytically active component is (i) the vanadium catalyst with vanadium as the catalytically active component; or (ii) the oxide catalyst with one or several oxides of cerium oxide, zirconium oxide, and tungsten oxide as the catalytically active component; or (iii) Cu-zeolite catalyst; and if the first catalytically active component is Fe-zeolite catalyst, then the second catalytically active component is (i) the vanadium catalyst with vanadium as the catalytically active component; or (ii) the oxide catalyst with one or several oxides of cerium oxide, zirconium oxide, and tungsten oxide as the catalytically active component; or (iii) Fe-zeolite catalyst.

EFFECT: increase in the activity of selective catalytic reduction of a catalyst, and reduction in a fraction of a catalytically active component.

20 cl, 4 dwg, 1 tbl, 5 ex