Abstract: The invention relates to a method for producing large stainless steel meshes on flatbed knitting machines, comprising the steps of providing stainless steel wire and knitting a stainless steel mesh, characterized in that one stainless steel mesh each is knitted on the front and the rear needle bed of the flatbed knitting machine at the same time, and these two stainless steel meshes are linked to each other on one side by connecting stitches.

Abstract: The present invention relates to a catalyst comprising a carrier substrate of the length L, which extends between a first end face ‘a’ and a second end face ‘b’, and differently composed material zones A and B arranged on the carrier substrate, wherein material zone A comprises platinum and no palladium or platinum and palladium with a weight ratio of Pt:Pd of ?1 and, material zone B comprises a copper containing zeolite having a Cu/Al ratio of 0.355 or higher.

Abstract: The present invention relates to a method for producing a non-rectangular noble metal net (5) on flat bed knitting machines, comprising the steps of providing noble metal wire or noble metal alloy wire providing combustible yarn knitting a net (5) using noble metal wire or noble metal alloy wire for the reaction zone (7), wherein combustible yam is used for the offcut area (9), which is singed off or otherwise removed after the knitting process.

Abstract: The invention relates to a method for producing a wall-flow filter for removing fine particulate solids from gases, and to the use thereof for cleaning exhaust gases of an internal combustion engine. The invention also relates to a correspondingly produced exhaust-gas filter having a high filtration efficiency.

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 invention relates to a method for producing trimethylplatinum(IV) iodide and trimethylplatinum(IV) iodide obtainable according to said method and the use thereof as a reactant for producing platinum(IV) compounds, as a precatalyst and as a catalyst. The platinum(IV) compounds thus obtainable, as well as the use thereof as precursors for the deposition of platinum layers and platinum-containing layers on a surface of a substrate are also the subject matter of the invention. The invention also relates to a substrate comprising a platinum layer or a platinum-containing layer on a surface, and to a method for producing an electronic component, in particular an electronic semiconductor component, or an electrode for a fuel cell using a platinum(IV) compound obtainable using trimethylplatinum(IV) iodide, which is obtainable by means of the method described herein.

Abstract: The present invention relates to a wall-flow filter, to a method for the production and the use thereof in order to reduce harmful exhaust gases of an internal combustion engine. The wall-flow filter was produced by applying a powder-gas aerosol to the filter, whereby the powder was deposited in the pores of the wall-flow filter.

Abstract: The present invention relates to a composite metal oxide which comprises 80 to 97 wt %, in relation to the weight of the composite metal oxide, of one or more oxides of cerium and 3 to 20 wt %, in relation to the composite metal oxide of a metal oxide comprising tin oxide (SnO2) and lanthanum oxide (La2O3) and/or aluminum oxide (Al2O3), a composite material for the storage of nitrogen oxides which comprises such composite metal oxide and palladium, as well as an exhaust gas system containing said composite material.

Abstract: The invention relates to a coating suspension for producing catalysts, to a corresponding method and to the catalysts themselves. In particular, a coating suspension is used during the production of the catalysts which leads to a porous catalytic coating.

Abstract: The present invention pertains to a catalyst for use in the selective catalytic reduction (SCR) of nitrogen oxides comprising: • a monolithic substrate and • a coating A which comprises an oxidic metal carrier comprising an oxide of titanium and a catalytic metal oxide which comprises an oxide of vanadium wherein the mass ratio vanadium/titanium is 0.07 to 0.26.

Abstract: The invention relates to a method for producing a compound of formula MXn from a precursor compound of formula MXm, where M is a metal, X is a halide selected from F, Cl, Br, J, m is a number selected from the range 2 to 8, and n is a number selected from the range 1 to 7, with the condition that n<m, comprising a method step in which the precursor compound is reduced with a silane compound to the compound of formula MXn.

Abstract: The invention relates to a method for producing aqueous preparations of complexes of platinum group metals (PGM) Pt, Pd, Rh and Ir having the general formula [MA/MB/MC(L)a (H2O)b (O2—)c(OH?)d](OH—)e(H+)f, wherein MA=PtII or PdII, MB=PtIV, MC=Rh or Ir, L is a neutral monodentate or bidentate donor ligand, and a is an integer between 1 and 4 (or 2) and/or between 1 and 6 (or 3), b is an integer between 0 and 3 (or 5), c is an integer between 0 and 3 (or 4), d is an integer between 0 and 3 (or 5), e is an integer between 0 and 2 (or 3 or 4) and f is an integer between 0 and 4 (or 5). In the method according to the invention, the hydroxo complexes H2Pd(OH)4 (in the case of MA=PdII), H2Pt(OH)6 (in the case of MA=PtII and MB=PtIV) or H3MC(OH)6 (for MC=RhIII IrIII) are converted in the presence of the donor ligands, wherein at least one hydroxo group of the hydro complex is exchanged. Preferably, the reaction occurs at temperatures in the range of 40 to 110° C.

Abstract: The present invention relates to a particulate filter which comprises a wall flow filter of length L and three mutually different catalytically active coatings X, Y and Z, wherein the wall flow filter comprises channels E and A that extend in parallel between a first and a second end of the wall flow filter and are separated by porous walls forming surfaces OE and, respectively, OA, and wherein the channels E are gas-tightly sealed at the second end and the channels A are gas-tightly sealed at the first end, characterized in that the coating X is located in the porous walls, the coating Y is located in the channels E on the surfaces OE and the coating Z is located in the channels A on the surfaces OA.

Abstract: The present invention relates to a method for producing automobile exhaust gas catalytic converters, to the catalytic converters as such and to the use thereof. In particular, the method comprises a step which results in a smaller particle size of the catalytically active material used.

Abstract: The invention relates to lithium alkyl aluminates according to the general formula Li[AlR4] and to a method for preparing same, starting from LiAlH4 and RLi in an aprotic solvent. The invention also relates to compounds according to the general formula Li[AlR4] which can be obtained using the claimed method, and to the use thereof. The invention also relates to the use of a lithium alkyl aluminate Li[AlR4] as a transfer reagent for transferring at least one radical R to an element halide or metal halide and to a method for transferring at least one radical R to a compound E(X)q for preparing a compound according to the general formula E(X)q-pRp, where E=aluminium, gallium, indium, thallium, germanium, tin, lead, antimony, bismuth, zinc, cadmium, mercury, or phosphorus, X=halogen, q=2, 3 or 4, and p=1, 2, 3 or 4. The invention also relates to compounds which can be obtained using such a method, to the use thereof, and to a substrate which has an aluminium layer or a layer containing aluminium on one surface.

Abstract: Disclosed herein are methods and systems for the removal of volatile organic compounds, carbon monoxide and nitrogen oxides from off-gas, which systems comprise a source of ammonia, means for introducing ammonia into a catalytic article having an SCR functionality; a catalytic article having both an oxidation and an SCR functionality, the catalytic article comprising a catalyst substrate and a catalyst composition comprising at least one platinum group metal and/or at least one platinum group metal oxide, at least one oxide of titanium and at least one oxide of vanadium, wherein the washcoat is located in and/or on the walls of the catalyst substrate: means for measuring the amount of NOx and/or the ammonia slip between the outlet end of the catalytic article and the stack or at the stack, at least one carbon monoxide source, and means for introducing carbon monoxide into the catalytic article.

Abstract: The present invention relates to a catalyst which comprises a carrier substrate of length L, which extends between a first end face a and a second end face b, and catalytically active material zones A, B and C of different composition, wherein—material zone A comprises palladium or palladium and platinum with a weight ratio of Pd:Pt>1, and cerium oxide, —material zone B comprises platinum or platinum and palladium with a weight ratio of Pt:Pd>1, and cerium oxide and/or cerium/zirconium mixed oxide, and—material zone C comprises platinum or platinum and palladium with a weight ratio of Pt:Pd>1, and a carrier oxide, and wherein—material zone B is arranged above material zone A, and—material zone C is arranged above material zone B, and, starting from the second end face b of the carrier substrate, extends over a length of up to 60% of the length L. The invention also relates to a catalyst arrangement containing said catalyst.

Abstract: Subject of the invention is an exhaust gas purification system for a gasoline engine, comprising in consecutive order the following devices: a first three-way-catalyst (TWC1), a gasoline particulate filter (GPF) and a second three-way-catalyst (TWC2), wherein the wash coat load (WCL) of the TWC2 is greater than the WCL of the GPF, wherein the WCL is determined in g/l of the volume of the device. The invention also relates to methods in which the system is used and uses of the system.

Abstract: The present invention relates to a particulate filter for removing particles, carbon monoxide, hydrocarbons and nitrogen oxides from the exhaust gas from internal combustion engines operated with a stoichiometric air-fuel mixture. Two coatings Y and Z are located in the porous walls and are present from the first end of the wall-flow filter over the entire length L of the particulate filter. Both contain active alumina, at least one cerium-zirconium-rare earth metal mixed oxide and at least one platinum group metal.

Abstract: The invention relates to a particulate filter which comprises a wall flow filter of length L and two catalytically active coatings Y and Z, wherein the wall flow filter comprises channels E and A that 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, and the coatings Y and Z have the same oxygen storage components and the same carrier materials for noble metals. The invention is characterised in that the coating Y is located in the channels E on the surfaces OE and the coating Z is located in the channels Aon the surfaces OA.