Abstract: A catalyst composition comprises a particulate support and catalyst nanoparticles on the particulate support. The catalyst nanoparticles comprise an alloy of platinum and palladium in an atomic ratio of from about 25:75 to about 75:25 and are present in a concentration of between about 3 and about 10 wt % weight percent of the catalyst composition. The catalyst composition has an X-ray diffraction pattern that is substantially free of the (311) diffraction peak assignable to PtxPd1-x, where 0.25?x?0.75.

Abstract: A catalyst 1 has a heat-resistant support 2 selected from among Al2O3, SiO2, ZrO2, and TiO2, and a first metal 4 supported on an outer surface of the support 2, and included by an inclusion material 3 containing a component of the support 2.

Abstract: A nanocomposite particle, its use as a catalyst, and a method of making it are disclosed. The nanocomposite particle comprises titanium dioxide nanoparticles, metal oxide nanoparticles, and a surface stabilizer. The metal oxide nanoparticles are formed hydrothermally in the presence of the titanium dioxide nanoparticles. The nanocomposite particle is an effective catalyst support, particularly for DeNOx catalyst applications.

Abstract: The present invention is directed to an improved catalyst support and to the resultant catalyst suitable for treating exhaust products from internal combustion engines, especially diesel engines. The support of the present invention is a structure comprising alumina core particulate having high porosity and surface area, wherein the structure has from about 1 to about 40 weight percent silica in the form of cladding on the surface area of said alumina core. The resultant support has a normalized sulfur uptake (NSU) of up to 15 ?g/m2.

Abstract: A catalyst applicable to the synthesis gas conversions especially E-T slurry processes, said catalyst comprising: a) a support containing at least a first aluminate element of mixed spinel structure of formula MxM?(1?x)Al2O4/Al2O3.SiO2, x ranging between and excluding 0 and 1, or of simple spinel structure of formula MAl2O4/Al2O3.SiO2, said support being calcined in an at least partly oxidizing atmosphere, at a temperature ranging between 850° C. and 900° C., and b) an active phase deposited on said support, which contains one or more group VIII metals, selected from among cobalt, nickel, ruthenium or iron. Said catalyst is used in a fixed bed or suspended in a three-phase reactor for hydrocarbon synthesis from a CO, H2 mixture.

Abstract: An exhaust gas purifying catalyst wherein the catalytic activity can be recovered over a wide temperature range is provided. Also provided are a method for recovering an exhaust gas purifying catalyst, and a catalyst system for exhaust gas purification. The exhaust gas purifying catalyst is characterized by containing an oxide A containing an oxide (A-1) containing an alkaline earth metal and/or a rare earth metal and an inorganic oxide (A-2), and a noble metal B supported by the oxide A. This exhaust gas purifying catalyst is also characterized in that the weight ratio of the oxide (A-1) containing an alkaline earth metal and/or a rare earth metal to the noble metal B is from 1:10 to 1:500.

Abstract: The present invention provides a method for preparing a pyrochlore type oxide having a larger specific surface area, a polymer electrolyte fuel cell and a fuel cell system improved in power generation efficiency and capable of being produced more inexpensively, and a method for producing an electro catalyst for a fuel cell, which electro catalyst has a larger specific surface area, is relatively inexpensive, and has high electrode activity per unit mass. A method for preparing a pyrochlore type oxide represented by A2B2O7-Z wherein A and B represent a metal element, Z represents a number of 0 or more and 1 or less, A includes at least one selected from the group consisting of Pb, Sn, and Zn, and B includes at least one selected from the group consisting of Ru, W, Mo, Ir, Rh, Mn, Cr, and Re, wherein the pyrochlore type oxide is produced by a reaction of a halide or nitrate of A with an alkali salt of a metal acid of B.

Abstract: The exhaust gas of internal combustion engines operated with a predominantly stoichiometric air/fuel mixture contains, as well as the gaseous hydrocarbon (HC), carbon monoxide (CO) and nitrogen oxide (NOx) pollutants, also ultrafine particulates. There is disclosed a catalytically active particulate filter, an exhaust gas cleaning system and a process for cleaning the exhaust gases of predominantly stoichiometrically operated internal combustion engines, as well as the gaseous CO, HC and NOx pollutants, also for removing particulates from the exhaust gas. The particulate filter comprises a filter body and a catalytically active coating consisting of two layers. Both layers contain alumina. The first layer contains palladium. The second layer contains rhodium. The latter is disposed above the first layer.

Abstract: A catalyst on an oxidic support and processes for selectively hydrogenating unsaturated compounds in hydrocarbon streams comprising them using these catalysts are described.

Abstract: The invention provides a catalyst for catalytically removing three components which are carbon monoxide, hydrocarbons and nitrogen oxides from combustion exhaust gas generated by combusting fuel in the neighborhood of the stoichiometric air to fuel ratio by bringing the combustion exhaust gas into contact therewith, the catalyst comprising: (A) a first catalyst component comprising at least one member selected from rhodium, platinum, and palladium in a content of 0.01 to 0.5% by weight; and (B) a second catalyst component, which is the remainder, comprising a composite oxide or a mixed oxide comprising (a) at least one oxide selected from zirconium oxide and titanium oxide, and (b) an oxide of at least one element selected from praseodymium, yttrium, neodymium, tungsten, niobium, silicon, and aluminum, wherein the content of the oxide (a) in the composite oxide or the mixed oxide is in a range of 70 to 95% by weight.

Abstract: An NOx purification system having NOx occlusion reduction-type catalysts including an occlusion material and a metal catalyst, which occludes NOx in a lean state in terms of a fuel-air ratio of an exhaust gas and releases the occluded NOx in a rich state. A high-temperature type catalyst is placed on the upstream side, and a low-temperature type catalyst is disposed on the downstream side in series with the high-temperature type catalyst. The molar ratio of platinum to rhodium supported on the high-temperature type catalyst is within a range of 2:1 to 1:2. This NOx purification system is capable of a wide NOx activation temperature window.

Abstract: In a particulate filter, a catalyst layer containing Pt-carried activated alumina particles, CeZr-based mixed oxide particles and ZrNd-based mixed oxide particles is formed, the proportion of the total amount of the CeZr-based mixed oxide particles and the ZrNd-based mixed oxide particles in the total amount of the Pt-carried activated alumina particles, the CeZr-based mixed oxide particles and the ZrNd-based mixed oxide particles is 10% to 60% by mass, both inclusive, and the mass ratio of the CeZr-based mixed oxide particles to the ZrNd-based mixed oxide particles is 20/80 to 80/20, both inclusive. This configuration enhances the particulate burning property and the low-temperature exhaust gas conversion efficiency.

Abstract: A recombination apparatus is provided to an off-gas system of a boiling water nuclear plant. An off-gas system pipe connected to a condenser is connected to the recombination apparatus. A catalyst layer filled with a catalyst for recombining hydrogen and oxygen is disposed in the recombination apparatus. The recombination catalyst has a percentage of the number of Pt particles whose diameters are in a range from more than 1 nm to not more than 3 nm to the numbers of Pt particles whose diameters are in a range from more than 0 nm to not more than 20 nm, falling within a range from 20 to 100%. The condenser discharges gas containing an organosilicon compound (ex. D5), hydrogen, and oxygen, which is introduced to the recombination apparatus. Use of the above recombination catalyst can improve the performance of recombining hydrogen and oxygen more than conventional catalysts and the initial performance of the catalyst can be maintained for a longer period of time.

Abstract: A particulate inorganic mixed oxide comprising: aluminum; zirconium; cerium; lanthanum and an additional element selected from the group consisting of neodymium and praseodymium, wherein the inorganic mixed oxide has at least 80% of primary particles with article diameters of 100 nm or less, and at least a part of the primary particles have an enriched surface region where the additional element is locally increased in a surface layer portion thereof.

Abstract: Catalyzed soot filters comprising a wall flow monolith having microcracks and pores and a catalyst comprising support particles with particle sizes greater than about the size of the microcracks and less than about the size of the pores are disclosed. Methods of manufacturing catalyzed soot filters and diesel engine exhaust emission treatment systems are also disclosed.

Abstract: An emission treatment system including a catalyzed soot filter comprising a wall flow monolith and a catalyst comprising at least two types of support particles is described. The first support particle contains at least a platinum component, the second support particles contains at least a palladium component. The wall flow monolith may be washcoated with a slurry comprising at least two types of particles without applying a passivation layer to the wall flow monolith.

Abstract: An oxidation catalyst that efficiently promotes oxidation of NO to NO2 even in a low temperature range, and an exhaust-gas purification system and method that efficiently removes exhaust-gas components even in a low temperature range are provided. This invention provides an oxidation catalyst comprising platinum and palladium as catalytically active components, which promotes oxidation of nitrogen monoxide to nitrogen dioxide, wherein the oxidation catalyst comprises 1 to 55 parts by weight of the palladium relative to 100 parts by weight of the platinum.

Abstract: The invention concerns a process for preparing metallic nanoparticles with an anisotropic nature by using two different reducing agents, preferably with different reducing powers, on a source of a metal selected from columns 8, 9 or 10 of the periodic table of the elements.

Abstract: A catalytic metal 5 is supported on oxide particles 4, 6 in a first catalyst layer 2, and first binder particles 7 which are fine, and have oxygen ion conductivity are interposed among the oxide particles. A catalytic metal 11 is supported on oxide particles 8, 9, 12 in a second catalyst layer 3 provided on or above the first catalyst layer 2, and second binder particles 13 which are fine, and are capable of storing and releasing oxygen are interposed among the oxide particles.

Abstract: Nitrogen oxide storage materials and methods of manufacturing nitrogen oxide storage materials are disclosed. The nitrogen oxide storage materials can be used to manufacture catalytic trap disposed in an exhaust passage of an internal combustion engine which is operated periodically between lean and stoichiometric or rich conditions, for abatement of NOx in an exhaust gas stream which is generated by the engine. In one embodiment, the nitrogen oxide storage material comprises alkaline earth material supported on ceria particles having a crystallite size of between about 10 and 20 nm and the alkaline earth oxide having a crystallite size of between about 20-40 nm.

Abstract: The invention is directed to iridium oxide based catalysts for use as anode catalysts in PEM water electrolysis. The claimed composite catalyst materials comprise iridium oxide (IrO2) and optionally ruthenium oxide (RuO2) in combination with a high surface area inorganic oxide (for example TiO2, Al2O3, ZrO2 and mixtures thereof). The inorganic oxide has a BET surface area in the range of 50 to 400 m2/g, a water solubility of lower than 0.15 g/l and is present in a quantity of less than 20 wt. % based on the total weight of the catalyst. The claimed catalyst materials are characterised by a low oxygen overvoltage and long lifetime in water electrolysis. The catalysts are used in electrodes, catalyst-coated membranes and membrane-electrode-assemblies for PEM electrolyzers as well as in regenerative fuel cells (RFC), sensors, and other electrochemical devices.

Abstract: The present invention provides a method for manufacture of supported noble metal based alloy catalysts with a high degree of alloying and a small crystallite size. The method is based on the use of polyol solvents as reaction medium and comprises of a two-step reduction process in the presence of a support material. In the first step, the first metal (M1=transition metal; e.g. Co, Cr, Ru) is activated by increasing the reaction temperature to 80 to 160° C. In the second step, the second metal (M2=noble metal; e.g. Pt, Pd, Au and mixtures thereof) is added and the slurry is heated to the boiling point of the polyol solvent in a range of 160 to 300° C. Due to this two-step method, an uniform reduction occurs, resulting in noble metal based catalysts with a high degree of alloying and a small crystallite size of less than 3 nm. Due to the high degree of alloying, the lattice constants are lowered.

Abstract: A layered, three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides is disclosed. Methods of making and using the same are also provided. In one or more embodiments, the catalyst comprises three layers of catalytic material in conjunction with a carrier. A first layer comprises a platinum component on a first support; a second layer comprises a rhodium component on a second support; and a third layer comprises a palladium component and a third support. The palladium, rhodium, and/or platinum can independently be deposited on a support of high surface area refractory metal oxide, or of an oxygen storage component, or both.

Abstract: A method of preparing a catalyst support is described comprising washing a precipitated metal oxide material with water and/or an aqueous solution of acid and/or base such that contaminant levels in said precipitated metal oxide are reduced. The method may be applied to precipitated alumina materials to reduce contaminants selected from sulphur, chlorine, Group 1 A and Group 2A metals. The catalyst supports may be used to prepare catalysts for the Fischer-Tropsch synthesis of hydrocarbons.

Abstract: A method and catalysts for producing a hydrogen-rich syngas are disclosed. According to the method a CO-containing gas contacts a water gas shift (WGS) catalyst, optionally in the presence of water, preferably at a temperature of less than about 450° C. to produce a hydrogen-rich gas, such as a hydrogen-rich syngas. Also disclosed is a water gas shift catalyst formulated from: a) Pt, its oxides or mixtures thereof; b) Ru, its oxides or mixtures thereof; and c) at least one of Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, Sc, Y, Ti, Zr, V, Mo, Mn, Fe, Co, Rh, Ir, Ge, Sn, Sb, La, Ce, Pr, Sm, and Eu. Another disclosed catalyst formulation comprises Pt, its oxides or mixtures thereof; Ru, its oxides or mixtures thereof; Co, its oxides or mixtures thereof; and at least one of Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, Sc, Y, Ti, Zr, V, Mo, Mn, Fe, Rh, Ir, Ge, Sn, Sb, La, Ce, Pr, Sm, and Eu, their oxides and mixtures thereof.

Abstract: An exhaust gas purifying catalyst having a good ignition performance is provided. The exhaust gas purifying catalyst 1 includes a catalyst substrate 3 and a catalyst coating layer 5 which contains a noble metal and a refractory inorganic oxide and is formed on the catalyst substrate. The exhaust gas purifying catalyst is characterized in that the catalyst coating layer 5 includes an upstream portion 11 located upstream and a downstream portion 13 located downstream in a flow direction of an exhaust gas. The upstream portion 11 has a layered structure including an upstream portion inside layer 17 and an upstream portion outside layer 15. The upstream portion inside layer contains a cerium-zirconium composite oxide in which a relative proportion of CeO2 is 50 to 95 wt %, as the refractory inorganic oxide, and the upstream portion outside layer 15 and the downstream portion 13 contain a cerium-zirconium composite oxide in which a relative proportion of ZrO2 is 50 to 95 wt %, as the refractory inorganic oxide.

Abstract: The present invention provides a supported catalyst for synthesizing carbon nanotubes. The supported catalyst includes a metal catalyst supported on a supporting body, and the supported catalyst has a surface area of about 15 to about 100 m2/g. The supported catalyst for synthesizing carbon nanotubes according to the present invention can lower production costs by increasing surface area of a catalytic metal to thereby allow production of a large amount of carbon nanotubes using a small amount of the catalyst.

Abstract: A method of producing de-alloyed nanoparticles. In an embodiment, the method comprises admixing metal precursors, freeze-drying, annealing, and de-alloying the nanoparticles in situ. Further, in an embodiment de-alloyed nanoparticle formed by the method, wherein the nanoparticle further comprises a core-shell arrangement. The nanoparticle is suitable for electrocatalytic processes and devices.

Abstract: Methods for synthesizing dimeric or polymeric reaction products of nitrogen aromatics comprise contacting a composition comprising the nitrogen aromatic with a catalyst composition. The catalyst comprises a first metal substrate having a second reduced metal coated on the substrate.

Abstract: A catalyst support is made by coating a metal substrate with a solution containing a precursor for a ceramic and an amphiphilic compound, and treating the coating such that it forms a micelle structure. The coating is then treated to form a mesoporous ceramic coating on the metal substrate. The micelle structure acts as a template, so that the pores are of regular size. The active catalytic material can then be deposited in the pores. The metal substrate may for example be a corrugated foil, which can enable reaction heat to be dissipated from hot spots.

Abstract: The present invention relates to a novel composite metal oxide catalyst, a method of making the catalyst, and a process for producing synthesis gas using the catalyst. The catalyst may be a nickel and cobalt based dual-active component composite metal oxide catalyst. The catalyst may be used to produce synthesis gas by the carbon dioxide reforming reaction of methane. The catalyst on an anhydrous basis after calcinations has the empirical formula: M a m + ? N b n + ? Al c 3 + ? Mg d 2 + ? O ( am 2 + bn 2 + 3 2 ? c + d ) Mm+ and Nn+ are two transition metals serving as dual-active components and selected from the group consisting of Ni, Co, Fe, Mn, Mo, Cu, Zn or mixtures thereof, a+b+c+d=1, and 0.001?a?0.8, 0.001?b?0.8, 0.1?c?0.99, 0.01?d?0.99.

Abstract: Catalyst for oxidation reactions which comprises at least one constituent active in the catalysis of hydrogen chloride oxidation and support therefor, which support is based on uranium oxide. The catalyst is notable for a high stability and activity.

Abstract: The ammonia decomposition catalyst of the present invention is a catalyst for decomposing ammonia into nitrogen and hydrogen, including a catalytically active component containing at least one kind of transition metal selected from the group consisting of molybdenum, tungsten, vanadium, chromium, manganese, iron, cobalt, and nickel, preferably including: (I) a catalytically active component containing: at least one kind selected from the group consisting of molybdenum, tungsten, and vanadium; (II) a catalytically active component containing a nitride of at least one kind of transition metal selected from the group consisting of molybdenum, tungsten, vanadium, chromium, manganese, iron, cobalt, and nickel; or (III) a catalytically active component containing at least one kind of iron group metal selected from the group consisting of iron, cobalt, and nickel, and at least one metal oxide, thereby making it possible to effectively decompose ammonia into nitrogen and hydrogen at relatively low temperatures and at

Abstract: An exhaust gas purifying catalyst includes: a composite oxide represented by: (Aa-w-xMwM?x) (Si6-yNy)O27-z. A is a cation of at least one of La and Pr; M is a cation of at least one of Ba, Ca, and Sr; M? is a cation of at least one of Nd, Y, Al, Pr, Ce, Sr, Li, and Ca; N is a cation of at least one of Fe, Cu, and Al. The following are satisfied: 6?a?10, 0<w<5, 0?x<5, 0<w+x?5, 0?y?3, 0?z?3, A?M?, and x?0 when A is a cation of La. A noble metal ingredient which forms a solid solution with the composite oxide or is supported on the composite oxide, and an exhaust gas purifying catalyst product formed of a carrier made of a ceramic or metallic material, and a layer of the exhaust gas purifying catalyst supported on the carrier.

Abstract: A catalytic element useful for promoting catalytic gas phase reactions is provided, comprising a porous ceramic body comprising a multiplicity of open pores having a coating comprising a basic oxide material and a catalyst material selected from transition metal and noble metal compounds.

Abstract: A catalyst for the decomposition of N2O under the conditions of the Ostwald process, comprising a carrier and a coating made of rhodium, rhodium/palladium or rhodium oxide applied thereto, ensures to yield NO with a particularly low content of laughing gas as the first process product.

Abstract: The invention is directed to iridium oxide based catalysts for use as anode catalysts in PEM water electrolysis. The claimed composite catalyst materials comprise iridium oxide (IrO2) and optionally ruthenium oxide (RuO2) in combination with a high surface area inorganic oxide (for example TiO2, Al2O3, ZrO2 and mixtures thereof). The inorganic oxide has a BET surface area in the range of 50 to 400 m2/g, a water solubility of lower than 0.15 g/l and is present in a quantity of less than 20 wt. % based on the total weight of the catalyst. The claimed catalyst materials are characterised by a low oxygen overvoltage and long lifetime in water electrolysis. The catalysts are used in electrodes, catalyst-coated membranes and membrane-electrode-assemblies for PEM electrolyzers as well as in regenerative fuel cells (RFC), sensors, and other electrochemical devices.

Abstract: The present development is a catalyst for use in water gas shift processes, a method for making the catalyst and a method of using the catalyst. The catalyst is composed of iron oxide, copper oxide, zinc oxide, alumina, and optionally, potassium oxide, and is produced using a hydrothermal synthesis process. The catalyst demonstrates surprising activity for conversion of carbon monoxide under high to moderate temperature shift reaction conditions.

Abstract: A gas fired catalytic heater is provided that foregoes the need for an electrical heating element to provide the activation energy for the hydrocarbon catalyst pad. An alcohol self-igniting catalyst pad is used to provide the activation energy to the hydrocarbon catalyst pad thereby removing dependence of the heater on an outside electrical energy source to initiate start-up of the heater. The catalyst pad includes a flexible wash coat; a noble metal dispersed on the wash coat; an anti-sintering element saturating the wash coat; and a catalyst promoter saturating the wash coat.

Abstract: The present invention relates to the processing of hydrocarbon-containing feedstreams in the presence of an interstitial metal hydride comprised of at least one chemical element selected from Groups 3-11 (including the lanthanides, atomic numbers 58 to 71), and at least one chemical element selected from Groups 13-15 from the IUPAC Periodic Table of Elements. These interstitial metal hydrides, their catalysts and processes using these interstitial metal hydrides and catalysts of the present invention improve overall hydrogenation, product conversion, as well as sulfur reduction in hydrocarbon feedstreams.

Abstract: Fe—Al—Cu catalysts have numerous industrial applications, for example, as catalysts in a water gas shift reactor. A method of producing a Fe—Al—Cu catalyst comprises the steps of providing an organic iron precursor, dissolving the organic iron precursor in a solvent solution, adding an aqueous solution comprising aluminum nitrate and copper nitrate to the organic iron pre-cursor-solvent solution, precipitating a gel comprising Fe—Al—Cu by adding a base, and drying the gel to form the Fe—Al—Cu catalyst.

Abstract: Catalysts, systems and methods are described to reduce NOx emissions of an internal combustion engine. In one embodiment, an emissions treatment system for an exhaust stream is provided having a catalyst comprising silver and a platinum group metal on a particulate alumina support, the atomic fraction of the platinum group metal being less than or equal to about 0.25. Methods of manufacturing catalysts are described in which silver is impregnated on alumina particles.

Abstract: Processes for purifying silicon tetrafluoride source gas by subjecting the source gas to one or more purification processes including: contacting the silicon tetrafluoride source gas with an ion exchange resin to remove acidic contaminants, contacting the silicon tetrafluoride source gas with a catalyst to remove carbon monoxide, by removal of carbon dioxide by use of an absorption liquid, and by removal of inert compounds by cryogenic distillation; catalysts suitable for removal of carbon monoxide from silicon tetrafluoride source gas and processes for producing such catalysts.

Abstract: An exhaust gas purifying catalyst (1) is composed of: a noble metal (2); a first compound (3); and a second compound (4). The noble metal (2) is supported on the first compound (3). The exhaust gas purifying catalyst (1) includes units having a structure in which the first compound (3) supporting the noble metal (2) is surrounded by the second compound (4), and the first compound (3) supporting the noble metal (2) is isolated from one another by the second compound (4). The noble metal (2) is one or more selected from [Pt, Pd and Rh], the first compound (3) contains Ti as a main component, and the second compound (4) contains, as a main component, one or more selected from [Al and Si].

Abstract: Architecture comprising ceramic or metallic foam, characterized in that the foam has a constant axial and radial porosity between 10 to 90% with a pore size between 2 to 60 ppi, and at least one continuous and/or discontinuous, axial and/or radial concentration of catalytic active(s) phase(s) from 0.01 wt % to 100 wt %, preferentially from 0.1 to 20 wt. %, and in that the architecture has a microstructure comprising specific area ranging between 0.1 to 30 m2/g, a grain size between 100 nm and 20 microns and a skeleton densification above 95%.

Abstract: An architecture made of a ceramic or a metallic foam has at least one continuous and/or discontinuous, axial and/or radial porosity gradient ranging from 10 to 90% associated to a pore size range from 2 to 60 ppi, at least one continuous and/or discontinuous, axial and/or radial concentration gradient of catalytic active(s) phase(s) from 0.01 wt % to 100 wt % preferentially from 0.1 wt % to 20 wt %, and a microstructure with a specific area ranging between 0.1 to 30 m2/g, a grain size between 100 nm and 20 microns and a skeleton densification above 95%.

Abstract: A metal oxide nanoporous material comprises two or more kinds of first metal oxides selected from the group consisting of alumina, zirconia, titania, iron oxide, rare-earth oxides, alkali metal oxides and alkaline-earth metal oxides. The metal oxide nanoporous material has nanopores, each with a diameter of 10 nm or smaller, in which the metal oxides are dispersed homogeneously in the wall forming the nanopores.

Abstract: Catalytic layers for use in the electrodes of fuel cells including a non-noble metal substrate layer coated with one or a few monolayers of noble metal, such as Pt. These thin, highly porous structures with large catalytically active surface areas, should exhibit a significantly higher power output per mg of Pt and per cm2 of the membrane than the current Polymer Electrolyte Fuel Cells catalytic layers.

Abstract: The invention relates to a process for the preparation of a catalyst comprising: a) The preparation of a colloidal oxide suspension of a first metal M1 that consists in the neutralization of a basic solution by an acidic mineral solution that contains the precursor of the metal M1, b) Bringing into contact the precursor of the promoter M2, either directly in its crystallized form or after dissolution in aqueous phase, with the colloidal suspension that is obtained in stage a), c) Bringing into contact the colloidal suspension that is obtained in stage b) with the substrate, d) Drying at a temperature of between 30° C. and 200° C., under a flow of air. The invention also relates to a process for the treatment of an olefinic fraction that uses the catalyst prepared [by] said preparation process.

Abstract: A modified catalyst support exhibiting attrition resistance and/or deaggregation resistance is provided. A catalyst composition including the modified catalyst support is also provided. A process to produce a modified catalyst support including treatment of a support slurry with a solution of monosilicic acid is provided. A process to use a catalyst including the modified catalyst support in a Fischer-Tropsch synthesis is provided.