EXHAUST GAS CATALYST AND CATALYST BINDERS FOR FILTER CARRIERS Russian patent published in 2022 - IPC B01J29/76 B01J29/72 B01J21/04 B01J35/04 B01D53/94 

FIELD: chemistry.

SUBSTANCE: invention relates to a catalytic product for the reduction in the content of NO_x and soot in exhaust gas. The catalytic product contains: a. a cellular filter with flow walls having porous walls; b. catalytic coating of porous oxide, located on and/or in at least part of porous walls. In this case, catalytic coating of porous oxide contains (i) a molecular sieve having from 1 wt.% to 10 wt.% of at least one metal promoter other than aluminum per the total weight of the molecular sieve; and (ii) from 1 wt.% to 30 wt.% of a binder having a particle size d90 of less than 10 mcm per the total weight of coating of porous oxide. The molecular sieve has a crystal structure CHA, AEI, AFX, AFT, ERI, LEV or KFI. The binder is selected from a group consisting of aluminum oxide, silicon dioxide, non-zeolite silicon dioxide-aluminum oxide, cerium oxide, cerium oxide-zirconium dioxide, titanium dioxide and mixtures thereof. The specified metal promoter other than aluminum is selected from a group consisting of gold (Au), silver (Ag), palladium (Pd), platinum (Pt), cerium (Ce), rhodium (Rh), ruthenium (Ru), copper (Cu), nickel (Ni), zinc (Zn), iron (Fe), tin (Sn), tungsten (W), molybdenum (Mo), cobalt (Co), bismuth (Bi), titanium (Ti), zirconium (Zr), antimony (Sb), manganese (Mn), chromium (Cr), vanadium (V), niobium (Nb), as well as combinations thereof.

EFFECT: improvement of the purification of exhaust gas due to the reduction in the content of NO_x and soot in exhaust gas.

15 cl, 3 dwg