Abstract: The invention relates to a wall flow filter for removing particulate matter from the exhaust of internal combustion engines, comprising a wall flow filter substrate having a length L, and different coatings Z and F, the wall flow filter substrate being provided with channels E and A which run parallel between a first end and a second end of the wall flow filter substrate, are separated by porous walls, and form surfaces OE and OA, respectively; channels E are closed at the second end, and channels A are closed at the first end; coating Z is disposed in the porous walls and/or on surfaces OA, but not on surfaces OE, and contains palladium and/or rhodium and a cerium/zirconium mixed oxide; coating F is disposed mainly on surfaces OE, but not on surfaces OA, and comprises a membrane and no precious metal. The wall flow filter is characterized in that the mass ratio of coating Z to coating F ranges from 0.1 to 25.

Abstract: The present invention relates to a catalyst, which comprises * a carrier substrate with a first end a and a second end b, and length L, * a material zone A containing a platinum group metal on a support material with a load of 40 to 150 g/l, relative to the volume of the carrier substrate and * material zone B containing a platinum group metal on a support material with a load of 75 to 200 g/l, relative to the volume of the carrier substrate, wherein material zone B has a greater content of platinum group metal, relative to the volume of the carrier substrate and calculated in g/l, than material zone A, and wherein material zone B has a proportion of pores with a diameter of 0.5 to 50 µm of 20 to 30%.

Abstract: The present invention relates to a composition comprising platinum supported on titanium oxide, the platinum particles having an average particle diameter of 50-200 nm. The composition has a surprisingly low light-off temperature for the ammonia oxidation and a high selectivity for oxidation to N2.

Abstract: The present invention relates to a catalyst that comprises a carrier body with a length L, which extends between a first end face ‘a’ and a second end face ‘b’, and differently composed, catalytically-active material zones A, B, and C arranged on the carrier body, wherein material zone A contains platinum or platinum and palladium with a weight ratio Pt:Pd of ?1 and, starting from end face ‘a’ or starting from end face ‘b’, extends along 70 to 100% of the length L, and material zone B contains palladium or platinum and palladium and, starting from end face ‘b’, extends along a portion of the length L, and material zone C contains SCR-active material and, starting from end face ‘a’, extends along a portion of the length L, wherein material zone C is arranged above material zone A.

Abstract: The present invention relates to a catalyst that comprises a carrier body with a length L, which extends between a first end face ‘a’ and a second end face ‘b’, and differently composed. catalytically-active material zones A, B, and C arranged on the carrier body, wherein material zone A contains platinum or platinum and palladium with a weight ratio Pt:Pd of >1 and, starting from end face ‘a’ or starting from end face ‘b’, extends along 70 to 100% of the length L, and material zone B contains palladium or platinum and palladium and, starting from end face ‘b’, extends along a portion of the length L, and material zone C contains SCR-active material and, starting from end face ‘a’, extends along a portion of the length L, wherein material zone C is arranged above material zone A.