Abstract: Known catalyst systems for the catalytic combustion of ammonia to form nitrogen oxides consist of a plurality of single- or multilayer catalyst gauzes warp-knitted, weft-knitted or woven from platinum-based noble metal wire, which, when arranged one behind the other in a fresh gas flow direction, form a front group of gauze layers and at least one downstream group of gauze layers arranged after the front group.

Abstract: Known catalyst systems for the catalytic combustion of ammonia to form nitrogen oxides consist of a plurality of catalyst gauze layers which are knitted, woven or braided from platinum-based precious metal wire, which form a catalyst package when arranged after one another when viewed in a fresh gas flow direction. In order to provide a catalyst system on this basis for use in a medium-pressure system, with which a yield of the main product NO comparable to the industry standard can be achieved despite the reduced precious metal use, according to the invention, the catalyst package is formed from a front assembly with three catalyst gauzes with a first average mass per unit area and a downstream assembly of catalyst gauze layers arranged after the front assembly and having a second average mass per unit area, wherein the average mass per unit area of the front assembly has a short weight in the region of 1.

Abstract: A method for recovering noble metal from a heterogeneous catalyst comprising a solid carrier material and palladium, platinum or rhodium, present at least partially in elemental form, said method comprising the steps of converting the noble metal to an oxidation state>0 by treating the heterogeneous catalyst with an oxidizing agent in the presence of hydrochloric acid so as to form a two-phase system A comprising a hydrochloric aqueous phase A1 and a solid phase comprising the carrier material which is insoluble therein, optionally, at least partially separating the hydrochloric aqueous phase A1 from the two-phase system A and adding a further aqueous phase to the remaining residue of the two-phase system A so as to form a two-phase system B comprising a hydrochloric aqueous phase and a solid phase comprising the carrier material insoluble therein.

Abstract: The present invention relates to a catalyst system for flow reactors which is characterized by the sequence of the noble metal-containing alloys used of the catalyst networks forming the catalyst system. By using palladium alloys for a second and third catalyst network group, the platinum content of the catalyst system can be kept relatively low overall. In addition, the invention relates to a method for catalytic combustion of ammonia, in which a fresh gas containing at least ammonia is conducted through a catalyst system.

Abstract: Known catalyst systems for the catalytic combustion of ammonia to form nitrogen oxides consist of a plurality of single- or multilayer catalyst gauzes warp-knitted, weft-knitted or woven from platinum-based noble metal wire, which, when arranged one behind the other in a fresh gas flow direction, form a front group of gauze layers and at least one downstream group of gauze layers arranged after the front group.

Abstract: Known catalyst systems for the catalytic combustion of ammonia to form nitrogen oxides consist of a plurality of catalyst gauze layers which are knitted, woven or braided from platinum-based precious metal wire, which form a catalyst package when arranged after one another when viewed in a fresh gas flow direction. In order to provide a catalyst system on this basis for use in a medium-pressure system, with which a yield of the main product NO comparable to the industry standard can be achieved despite the reduced precious metal use, according to the invention, the catalyst package is formed from a front assembly with three catalyst gauzes with a first average mass per unit area and a downstream assembly of catalyst gauze layers arranged after the front assembly and having a second average mass per unit area, wherein the average mass per unit area of the front assembly has a short weight in the region of 1.

Abstract: The present invention relates to a powder composed of spherical noble-metal particles having a particle size distribution with a d10 value of ?10.0 ?m and a d90 value of ?80.0 ?m.

Abstract: The present invention relates to a powder composed of spherical noble-metal particles having a particle size distribution with a d10 value of ?10.0 ?m and a d90 value of ?80.0 ?m.

Abstract: The present invention relates to a powder composed of spherical noble-metal particles having a particle size distribution with a d10 value of ?10.0 ?m and a d90 value of ?80.0 ?m.

Abstract: A method for processing a dispersion-hardened platinum composition is provided. A three-dimensional body of a dispersion-hardened platinum composition containing at least 70% by weight platinum and maximally 29.95% by weight other precious metals, as well as 0.05% by weight to 0.5% by weight of at least one partially-oxidized non-precious metal selected from zirconium, cerium, scandium, and yttrium is provided and cold formed, whereby the cross-sectional area of the three-dimensional body is reduced by maximally 20% during the cold forming, Subsequently a temperature treatment is performed on the cold-formed three-dimensional body, in which the cold-formed product is tempered at at least 1,100° C. for at least one hour. A method for producing a product made of a dispersion-hardened platinum composition, a dispersion-hardened platinum material obtained according to the processing method, and the use of a dispersion-hardened platinum material are also described.

Abstract: In a vehicle part with a structural reinforcement part, the structural reinforcement part comprises fibers embedded in plastic material to absorb tensile and/or compressive forces or tensile (FZ) and/or compressive stresses.

Abstract: In a vehicle part with a structural reinforcement part, the structural reinforcement part comprises fibers embedded in plastic material to absorb tensile and/or compressive forces or tensile (Fz) and/or compressive stresses.

Abstract: The invention relates to multiple-container systems and to the use of same for optical assays. The invention relates in particular to a multiple-container system comprising a container wall matrix (1) with continuous cavities and one or more optically transparent base plates (2) joined to the container wall matrix.aid system is characterized in that the base plates are coated with a film (3) having functional groups suitable for the covalent immobilization of molecules. The film on the base plate is preferably a Langmuir-Blodgett film, and preferably a Langmuir-Blodgett film on cellulose basis. The invention further relates to multiple-container systems comprising a container wall matrix with continuos cavities and one or more optically transparent base plates joined to the wall matrix. Said systems are characterized in that the base plates are coated with a film derivatized with receptor molecules or molecules presenting low non-specific protein adsorption.