CONTAINING VANADATE FILTER WITH POROUS WALLS FOR SELECTIVE CATALYTIC RECOVERY Russian patent published in 2018 - IPC B01J23/887 B01J23/847 B01J35/04 F01N3/00 

FIELD: engines and pumps.

SUBSTANCE: invention relates to a filter for exhaust gases selective catalytic reduction, which comprises: substrate in the form of a filter with porous walls and a catalyst disposed on said substrate. At that, the catalyst comprises a carrier and a vanadate component, wherein the said vanadate component has a structure given by the following formula: (A_x)(T_Y)(R_z)VO₄, where "A" is an alkaline earth metal and "X" is the alkaline earth metal to vanadate molar ratio; "T" is a transition metal and "Y" is the transition metal to vanadate molar ratio; "R" is a rare earth metal and "Z" is the rare earth metal to vanadate molar ratio; and 0 ≤ X ≤ 1; 0 ≤ Y ≤ 1; and X + Y + Z = 1. At that, the said vanadate component is located on said substrate in the form of a primer applied to the end portion of the input and output channels at the outlet of said filter, where the end part of the input and output channels is the filter axial section, encompassing an input surface or an exit surface, having a length, measured either from the input surface or from the exit surface, which is approximately half the entire length of the filter, and wherein "A" is selected from the group consisting of Mg, Ca, Sr, and Ba, "T" is selected from the group consisting of Fe, Cu, Zn, Mo, Cr and Mn, and "Z" is 0. Invention also relates to an exhaust system for the treatment of exhaust gases.

EFFECT: technical result consists in the development of an advanced exhaust gas treatment system.

10 cl, 1 dwg, 3 tbl, 3 ex