CARRIER-BASED CATALYST, MONOLITHIC CATALYST OF SELECTIVE CATALYTIC REDUCTION (SCR), METHOD FOR THEIR PREPARATION AND METHOD FOR REMOVING NITROGEN OXIDES Russian patent published in 2021 - IPC B01J23/22 B01J37/08 B01D53/94 

FIELD: exhaust gas processing.

SUBSTANCE: invention relates to a catalyst of selective catalytic reduction based on a carrier containing a carrier that contains at least one selected from a group consisting of TiO₂, Al₂O₃, SiO₂, ZrO₂, CeO₂ and a combination thereof and catalytically active components applied to this carrier that contain vanadium, antimony and at least one additional component selected from a group consisting of silicon, aluminum and zirconium, wherein the specified at least one additional component is contained in the amount from 0.5 to 20% by weight calculated as SiO₂, Al₂O₃ or ZrO², respectively, wherein in each case, per the total weight of the carrier and catalytically active components, the carrier is contained in the amount from 50 to 97.5% by weight. The invention also relates to a method for producing a carrier-based catalyst, to a monolithic catalyst of selective catalytic reduction, to a method for producing it, and to a monolithic catalyst of selective catalytic reduction obtained by this method, to a method for NO_x reduction in exhaust gas from an internal combustion engine and method for processing exhaust gas.

EFFECT: aim of the invention is producing SCR catalyst that shows excellent activity in fresh and aged state for reducing NO_x emissions in mobile and stationary devices of exhaust gas emission.

29 cl, 2 dwg, 1 tbl, 28 ex