Catalytically active particle filter with a high degree of filtration efficiency

A wall-flow filter for removing particles from the exhaust gas of internal combustion engines, which comprises a wall-flow filter of length L and at least one catalytically active coating Y and/or Z, wherein the wall-flow filter comprises channels E and A, which extend in parallel between a first and a second end of the wall-flow filter and are separated by porous walls, which form surfaces OE and OA, respectively, and wherein the channels E are closed at the second end and the channels A are closed at the first end, the coating Y is located in the channels E on the walls of the surfaces OE, wherein the coating on the walls of the surface OE extends from the first end of the wall-flow filter to a length of less than the length L, the coating Z is located in the channels A on the walls of the surfaces OA, wherein the coating on the walls of the surface OA extends from the second end of the wall-flow filter to a length of less than the length L, wherein the inlet region E of the filter has additionally been impinged with at least one dry powder-gas aerosol where the dry powder P is a high-melting metal compound where such corresponding metals compounds are metal oxide, metal sulfate, metal phosphate, metal carbonate or metal hydroxide powders or their mixtures and are selected of the group of calcium, magnesium, strontium, barium, aluminum, silicon, titanium, zirconium, cerium, and wherein the dry powder P fills up one or both of (i) and (ii), with (i) being cracks or interruptions formed in the dried, or dried and sintered, catalytically active coating Y, when present, and (ii) being pores exposed in the surface OE.