Ammonia oxidation catalyst units comprising a pair of honeycomb-type blocks having interplaced between them a layer of a gas permeable material performing the function of radially mixing the gas flow, said blocks comprising an ammonia oxidation catalysts, and having height of less than 15 cm and the interplaced layer height of 3 to 0.5 cm.

A diesel oxidation catalyst composition is provided, the composition including at least one platinum group metal impregnated onto a porous refractory oxide material in particulate form and at least one base metal oxide impregnated onto a porous refractory oxide material in particulate form, wherein the porous refractory oxide material impregnated with at least one platinum group metal and the porous refractory oxide material impregnated with at least one base metal oxide are in the form of a mixture or wherein the at least one platinum group metal and the at least one base metal oxide are impregnated on the same porous refractory oxide material. The diesel oxidation catalyst provides synergistic enhancement of carbon monoxide oxidation as well as relatively unimpaired hydrocarbon oxidation. Methods of making and using the catalyst composition are also provided, as well as emission treatment systems comprising a catalyst article coated with the catalyst composition.

Methods and systems are provided for a diesel oxidation catalyst. In one example, the diesel oxidation catalyst comprises a washcoat with different catalytically active portions for reacting with one or more of carbon containing compounds and NO.sub.x. The diesel oxidation catalyst is located upstream of a particulate filter in an exhaust passage.

Embodiments of the present invention relate to two improved catalysts and associated processes that directly convert carbon dioxide and hydrogen to liquid fuels. A catalytic system comprises two catalysts in series that are operated in tandem to directly produce synthetic liquid fuels. The carbon conversion efficiency for CO.sub.2 to liquid fuels is greater than 45%. The fuel is distilled into a premium diesel fuels (approximately 70 volume %) and naphtha (approximately 30 volume %) which are used directly as drop-in fuels without requiring any further processing. Any light hydrocarbons that are present with the carbon dioxide are also converted directly to fuels. This process is directly applicable to the conversion of CO.sub.2 collected from ethanol plants, cement plants, power plants, biogas, carbon dioxide/hydrocarbon mixtures from secondary oil recovery, and other carbon dioxide/hydrocarbon streams. The catalyst system is durable, efficient and maintains a relatively constant level of fuel productivity over long periods of time without requiring re-activation or replacement.

A method for preparing a reaction product including an aryl-functional silane includes sequential steps (1) and (2). Step (1) is contacting, under silicon deposition conditions, (A) an ingredient including (I) a halosilane such as silicon tetrahalide and optionally (II) hydrogen (H.sub.2); and (B) a metal combination comprising copper (Cu) and at least one other metal, where the at least one other metal is selected from the group consisting of gold (Au), cobalt (Co), chromium (Cr), iron (Fe), magnesium (Mg), manganese (Mn), nickel (Ni), palladium (Pd), and silver (Ag); thereby forming a silicon alloy catalyst comprising Si, Cu and the at least one other metal. Step (2) is contacting the silicon alloy catalyst and (C) a reactant including an aryl halide under silicon etching conditions.

The present invention relates to a heterogeneous catalyst for making a dicarboxyl acid aromatic heterocyclic compound and a method for preparing a dicarboxyl acid aromatic heterocyclic compound, and according to the present invention, an oxide with improved yield and purity can be produced by an oxidation reaction of a bio-based aromatic heterocyclic compound under a heterogeneous catalyst.

Multi-zoned synergized-platinum group metals (SPGM) catalysts with significant catalytic capabilities are disclosed. The multi-zoned SPGM catalysts are produced according to catalyst configurations including OC layers of ultra-low PGM loadings, alone or in combination with a base metal oxide, which are deposited onto either mixtures of doped ZrO.sub.2 and oxygen storage materials (OSM) or OSM alone. Further, the multi-zoned SPGM catalysts further include zoned impregnation layers with PGM, alone or in combination with Ba loadings. Additionally, three-zoned SPGM catalysts are produced including front and back zone catalysts that include binary spinel oxide compositions. Conversion performance of the aged SPGM catalysts and an aged PGM-based OEM catalyst are tested employing TWC low perturbation isothermal oscillating, isothermal steady-state sweep, and light-off test methodologies. Test results confirm the SPGM catalysts including ultra-low PGM loadings and spinel-based ZPGM WC layer are capable of providing significant conversion performance that is comparable to high PGM-based OEM catalyst.

The present invention provides an additive composition having the general formula: A.sub.xB.sub.yC(.sub.1-y)D.sub.zO.sub.m wherein: A is one or more metal elements selected from the group consisting of Group IIA of the periodic table; B, C is one or more metal elements selected from the lanthanide group, series of the periodic table or Yttrium; D is one or more metal elements selected from the group consisting of Manganese, Cobalt, Copper, Nickel or Ruthenium; x is a number defined by 0.5<x<4; y is a number defined by 0<=y<=1; z is a number defined by 2<z<6; m is a number which renders the catalyst substantially neutral. The present invention also provides a process for preparing the afore-mentioned additive composition. The present invention further provides mixed metal oxide catalysts comprising additive composition and its use in hydrocarbon conversion processes.

Disclosed is a system for managing wireless transmitting devices in which a wireless transmission from a transmission device is detected within or about a set area and an allowability of the transmission device to continue transmitting is based on an identification information, of the device, a location of the device and a number being called by the device.

The present invention relates to a kit for water treatment, comprising: a photocatalyst including at least one of SnFe.sub.2O.sub.4, ZnFe.sub.2O.sub.4, CuFe.sub.2O.sub.4, Fe.sub.3O.sub.4, MnFe.sub.2O.sub.4 and NiFe.sub.2O.sub.4; and an active oxide. The present invention also relates to a method for manufacturing a photocatalyst and a use of the prepared photocatalyst.