Abstract: The present invention is directed to a particle filter to remove soot from the exhaust gas of a diesel engine. The particle filter contains a catalytically active coating on a filter body to accelerate bum-off during a regeneration phase of the soot particles collected on the filter. The particle filter comprises a catalytic coating containing compounds of barium, compounds of magnesium, and at least one element of the platinum group metals. The invention is further directed to a process for accelerated combustion of soot particles collected on the filter from lean exhaust gas of a diesel engine in which the soot particles have a soot ignition temperature and the particle filter is actively regenerated from time to time by raising the temperature of the particle filter above the soot ignition temperature and burning off the soot particles.

Abstract: A composition comprising a promoter and a metal oxide selected from the group consisting of a niobium oxide, a tantalum oxide, and combinations thereof, wherein at least a portion of the promoter is present as a reduced valence promoter and methods of preparing such composition are disclosed. The thus-obtained composition is employed in a desulfurization zone to remove sulfur from a hydrocarbon stream.

Abstract: A composition comprising a tin oxide and a promoter, wherein at least a portion of the promoter is present as a reduced valence promoter and methods of preparing such composition are disclosed. The thus-obtained composition is employed in a desulfurization zone to remove sulfur from a hydrocarbon stream.

Abstract: A catalyst for the production of carbon fibrils and a method for the manufacture of such a catalyst comprising contacting a fibril-forming catalyst or precursors of a fibril-forming catalyst with an effective amount of a surfactant and/or polyol. The improved carbon fibrils or carbon fibril aggregates produced using the catalyst are free of a continuous carbon thermal overcoat, with graphitic layers substantially parallel to the fibril axis, and have a substantially constant diameter from about 1.0 to 100 nanometers. The improved carbon fibrils possess enhanced dispersion in composite materials and provide enhanced electrical conductivity in those materials.

Abstract: The present invention relates to novel manganese complexes of salen ligands and the use thereof as catalysts that enhance the action of peroxy compounds in washing, cleaning, and disinfecting processes.

Abstract: A sorbent composition is provided which can be used in the desulfurization of a hydrocarbon-containing fluid such as cracked gasoline or diesel fuel. The sorbent composition contains a support component and a promoter component with the promoter component being present as a skin on the support component. Such sorbent composition is prepared by a process of impregnating a support component with a promoter component, wherein the promoter component has been melted under a melting condition, followed by drying, calcining, and reducing to thereby provide the sorbent composition.

Abstract: Oxidation catalysts useful in the oxidation to CO2 and H2O of volatile organic compounds such as hydrocarbons comprising mixed oxides of copper, manganese and one or more rare-earth metals, wherein the metals can assume multiple valency states, having a percentage composition by weight, expressed as CuO, MnO and rare-earth oxides, in which the metal has the minimum value of 8-50%, 10-75% and 2-15%. The oxides are supported on inert porous inorganic oxides.

Abstract: New three-way catalysts for vehicles contain, as an oxygen storage component, mixed oxide MnZr. These components are less expensive than state-of-the-art ceria/zirconia, and generally offer improved capacity even after exposure to high temperatures.

Abstract: A process and system for producing industrial-scale quantities of highly dispersed, thermally stable catalysts is disclosed. The process, which may be continuous production or batch production, includes mixing together the desired catalyst precursor materials, a combustible organic material and a solvent; evaporating the solvent, combusting the catalyst intermediate; and shaping final catalyst.

Abstract: The present invention relates to the preparation of an aromatic carboxylic acid by contacting an alkyl aromatic compound with an oxygen containing gas in the presence of a encapsulated oxo-bridged organometallic cluster catalyst.

Abstract: A catalytic composition and method of making the same in which a catalytic material has an average pore size distribution sufficiently large to substantially prevent capillary condensation.

Abstract: The present invention relates to sulfur tolerant catalyst composites useful for reducing contaminants in exhaust gas streams, especially gaseous streams containing sulfur oxide contaminants. More specifically, the present invention is concerned with improved NOx trap catalysts for use in diesel engines as well as lean burn gasoline engines. The sulfur tolerant NOx trap catalyst composites comprise a platinum component, a support, and a NOx sorbent component prepared by hydrothermal synthesis. The NOx sorbent component comprises a first metal oxide and a second metal oxide. The metal in the first metal oxide is selected from the group consisting of aluminum, titanium, zirconium, silicon, and composites thereof, and the metal in the second metal oxide is selected from the group consisting of Group IIA metals, Group III metals, Group IV metals, rare earth metals, and transition metals. The metal in the first metal oxide is different from the metal in the second metal oxide.

Abstract: A process is described that removes by oxidation the excess ammonia (NH3) gas from flue gases that have been subjected to selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR) of oxides of nitrogen (NOx) by ammonia injection. Methods for the removal of residual ammonia from flue gases prior to deposition on fly ash are discussed.

Abstract: Nitrogen oxides contained in an exhaust gas emitted from a lean-burn engine-mounted internal combustion engines are eliminated with a high efficiency.

Abstract: A method of treating a catalyst support comprises introducing onto and/or into an untreated catalyst support which is partially soluble in an aqueous acid solution and/or a neutral aqueous solution, Si, Zr, Cu, Zn, Mn, Ba, Co, Ni and/or La as a modifying component. The modifying component is capable, when present in and/or on the catalyst support, of suppressing the solubility of the catalyst support in the aqueous acid solution and/or the neutral aqueous solution. A protected modified catalyst support which is less soluble or more inert in the aqueous acid solution and/or the neutral aqueous solution, than the untreated catalyst support, is thus formed. A method of forming a catalyst from the modified catalyst support is also provided.

Abstract: The present invention provides a catalyst for the epoxidation of hydrocarbons with oxygen, a process for the preparation of the catalyst, and a process for the epoxidation of hydrocarbons with oxygen in the presence of the catalyst.

Abstract: A low temperature metal promoted copper/zinc/aluminum water gas shift catalyst is described. The catalyst is formed from a precursor, wherein the precursor includes aluminum in the form of hydrotalcite and aluminum separate from the hydrotalcite. A method of making the catalyst and a process for using the catalyst are also described.

Abstract: The present invention concerns a process for trapping NOx, in the treatment of with a view to reducing emissions of oxides of nitrogen.

Abstract: A composition comprising manganese oxide and a promoter, wherein at least a portion of the promoter is present as a reduced valence promoter and methods of preparing such composition are disclosed. The thus-obtained composition is employed in a desulfurization zone to remove sulfur from a hydrocarbon stream.

Abstract: The invention provides a process for the production or mainly C5+ hydrocarbons comprising contacting carbon monoxide and hydrogen at a temperature in the range of from 180 to 270° C. and elevated pressure in the presence of a catalyst composition comprising cobalt, manganese and at least one of rhenium and/or ruthenium on a titania carrier; a catalyst composition comprising cobalt, manganese and rhenium on a titania carrier.

Abstract: Volatile organic compounds, for example organophosphonate compounds including chemical warfare agents, pesticides, and solvents, are decomposed by contacting the compounds with either a manganese oxide catalyst in the presence of visible light or a catalyst material selected from the group consisting of vanadium, vanadium oxide, manganese oxide and mixtures thereof deposited upon a catalyst support that is heated to at least 300° C. The catalyst material may be regenerated by a process selected from the washing with water, washing with a solvent, heating, exposing to light, purging with oxygen, purging with a reactive gas, exposing to microwave radiation, and combinations thereof. The catalyst composition may be used as an air filter in a vehicle, a building or a personnel protection device, such as a gas mask.

Abstract: A catalytic composition and method of making the same in which a catalytic material has an average pore size distribution sufficiently large to substantially prevent capillary condensation.

Abstract: A catalyst which contains at least one element selected from the group consisting of Group V elements, Group VI elements, Group VII elements, Group VIII elements, Group IX elements, Group X elements, and Group XI elements in the periodic table, and is to be used for subjecting an epoxy alcohol represented by a general formula (1) to a hydrogenolysis reaction in the presence of at least one solvent selected from the group consisting of ethers, esters, aromatic hydrocarbon compounds, alicyclic hydrocarbon compounds and aliphatic hydrocarbon compounds. By use of such a catalyst, a both end-hydroxyl group-terminated diol having a high purity can be produced efficiently.

Abstract: Provided is a selective hydrogenation process for producing aminonitriles by contacting the corresponding dinitriles with a hydrogen-containing fluid in the presence of a hydrogenation catalyst, a solvent and tetraalkylammonium hydroxide and/or tetraalkylphosphonium hydroxide additive.

Abstract: Disclosed is a catalyst for purification of CO-containing exhaust gases, comprising: a metal oxide as a support and a catalytic component A being supported thereon as a catalytic component and including a specific noble metal element; wherein the support includes a titanium-containing oxide as the metal oxide and is a monolithically molded type porous honeycomb support obtained by a process including the steps of extrusion-molding and then calcining materials of the support; and wherein the catalytic component A is distributed with a quantitatively great inclination toward surfaces of the catalyst. Further disclosed is a process for purification of exhaust gases to remove CO therefrom, comprising the step of bringing the exhaust gases into contact with the above catalyst.

Abstract: The invention concerns materials for eliminating oxides of nitrogen NO and NO2 present in exhaust gases, in particular from the internal combustion engines of automotive vehicles operating in a medium that is super-stoichiometric in oxidizing agents, which can adsorb oxides of nitrogen then desorb the oxides of nitrogen by elevating the temperature with respect to the adsorption temperature or by passage of a rich mixture, the materials comprising mixed oxides the metals of which are in octahedral co-ordination, with the octahedral connecting together so that the structure generates micropores in the form of channels. The channel width of the materials is such that the sides are composed of 2 and/or 3 octahedra. These materials adsorb oxides of nitrogen by insertion and do not become poisoned in contact with oxides of sulfur and carbon contained in the gases.

Abstract: The present invention provides a process for inhibiting the re-absorption of migrating dyes in the wash liquor, comprising introducing into a wash liquor containing a peroxide-containing detergent, from 0.5 to 150 mg per liter of wash liquor, of one or more manganese containing compounds.

Abstract: An electrolytic process and apparatus for oxidizing inorganic or organic species is disclosed. The process and apparatus includes contacting a solution containing the inorganic or organic species with an electrocatalytic material disposed in an electrolytic reactor. Also disclosed are processes for fabricating a catalyst material for use in the electrolytic reactors and processes.

Abstract: In the process for preparing an aromatic carbonate from an aromatic hydroxy compound, CO and O2 in the presence of a quaternary salt and a base using a platinum metal catalyst and a cocatalyst, use is advantageously made of supported catalysts containing, in the reaction-ready state, (i) a platinum metal, a platinum metal halide or a platinum metal halide complex and (ii) a metal compound acting as cocatalyst from groups IB, IIB, IIIA, IIIB, IVA, IVB, VB, VIB, VIIB, the iron group (atomic numbers 26-28) or the rare earth metals (atomic numbers 58-71) of the Periodic Table of the Elements (Mendeleev), each in an amount of 0.01-15% by weight, calculated as metal and based on the total weight of the catalyst.

Abstract: A modified carrier carrying on at least a part of an inert carrier surface an oxide which is represented by the formula (1): XaYbZcOd (wherein X is at least an element selected from alkaline earth metals; Y is at least an element selected from Si, Al, Ti and Zr; Z is at least an element selected from Group IA elements and Group IIIb elements of the periodic table, B, Fe, Bi, Co, Ni and Mn; and O is oxygen; a, b, c and d denote the atomic ratios of X, Y, Z and O, respectively, where a=1, 0<b≦100, 0≦c≦10, and d is a numerical value determined by the extents of oxidation of the other elements) is provided. A catalyst formed with the use of this modified carrier carrying a complex oxide containing Mo and V is useful as a vapor phase catalytic oxidation catalyst, and is particularly suitable as a catalyst for preparing acrylic acid through vapor phase catalytic oxidation of acrolein.

Abstract: The present invention provides: a catalyst which has more excellent removability upon organohalogen compounds and is suitable for removing the organohalogen compounds from exhaust gases; and a process for removing organohalogen compounds with this catalyst. The catalyst for removing organohalogen compounds comprises titanium oxide (TiO2) and vanadium oxide as catalytic components, and has pores that includes a group of pores having a pore diameter distribution peak in the range of 0.01 to 0.05 &mgr;m and another group of pores having a pore diameter distribution peak in the range of 0.1 to 0.8 &mgr;m, and this catalyst is characterized by further comprising an oxide of at least one metal selected from the group consisting of manganese, cobalt, nickel, zinc, zirconium, niobium, molybdenum, tin, tantalum, lanthanum and cerium as another catalytic component. The process for removing organohalogen compounds involves the use of this catalyst.

Abstract: It is an object of the present invention to provide a catalyst for manufacturing a carboxylic ester, which has superior catalytic activity. The present invention relates to a catalyst for preparing a carboxylic ester, used in a) a reaction for preparing a carboxylic ester by reacting oxygen, an aldehyde, and an alcohol, or b) a reaction for manufacturing a carboxylic ester by reacting oxygen and one or more types of alcohol, comprising a carrier and 1) ultrafine gold particles and/or 2) ultrafine metal particles containing gold and a second element other than gold, having an average particle diameter of not more than 6 nm, are supported on the carrier.

Abstract: A catalytic trap disposed in an exhaust passage of an internal combustion engine which is operated with periodic alternations between lean and stoichiometric or rich conditions, for abatement of NOx in an exhaust gas stream which is generated by the engine. The trap comprises a catalytic trap material and a refractory carrier member on which the catalytic trap material is disposed. The catalytic trap material comprises: (i) a refractory metal oxide support; (ii) a catalytic component effective for promoting the reduction of NOx under stoichiometric or rich conditions; and (iii) a NOx sorbent effective for adsorbing the NOx under lean conditions and desorbing and reducing the NOx to nitrogen under stoichiometric or rich conditions. The NOx sorbent comprises a metal oxide selected from the group consisting of one or alkali metal oxides, alkaline earth metal oxides and mixtures of one or more alkali metal oxides and alkaline earth metal oxides.

Abstract: The present invention has an object to obtain a ceramic body that can support a required amount of catalyst component, without lowering the characteristics such as strength, being manufactured without forming a coating layer and providing a high performance ceramic catalyst body that is excellent in practical utility and durability.

Abstract: In order to reduce polluting components of an exhaust gas from a combustion engine, a structure with a metal sheet is proposed, which has a catalytically active surface. The surface of the metal sheet is at least partially provided with a catalytically active metal oxide layer, in particular titanium oxide.

Abstract: An oxygen ion conducting ceramic oxide that has applications in industry including fuel cells, oxygen pumps, oxygen sensors, and separation membranes. The material is based on the idea that substituting a dopant into the host perovskite lattice of (La,Sr)MnO3 that prefers a coordination number lower than 6 will induce oxygen ion vacancies to form in the lattice. Because the oxygen ion conductivity of (La,Sr)MnO3 is low over a very large temperature range, the material exhibits a high overpotential when used. The inclusion of oxygen vacancies into the lattice by doping the material has been found to maintain the desirable properties of (La,Sr)MnO3, while significantly decreasing the experimentally observed overpotential.

Abstract: A catalyst precursor comprising a composite of a solids support, or powder component, and a compound or salt of a metal, or metals component, inclusive of cobalt, is upon reduction rendered catalytically active for conducting hydrogenation reactions, especially carbon monoxide hydrogenation reactions by contact at low temperature with liquid water, or steam, or a mixture of liquid water and steam, sufficient to oxidize and convert the metal, or metals component of the catalyst precursor to a metal hydroxide, low oxygen-containing metal oxide, or mixture of metal hydroxide and low oxygen-containing metal oxide. On reduction, as may be produced by contact and treatment of the oxidized catalyst precursor with hydrogen, the now well dispersed oxide or hydroxylated catalytic metal, or metals component of the catalyst, is reduced to metallic metal, e.g., Co, and the catalyst thereby activated.

Abstract: A catalyst useful for the gas phase oxidation of alkanes to unsaturated aldehydes or carboxylic acids is disclosed. Processes for preparing the catalyst and using the catalyst to convert alkanes to unsaturated aldehydes or carboxylic acids are also disclosed.

Abstract: Present invention relates to a CdZnMS photocatalyst for producing hydrogen from water and a method for preparing thereof and a method for producing hydrogen by using said photocatalyst. Said photocatalyst is characterized by the following general formula VII: m(a)/CdxZnyMzS  (VII) wherein ‘m’ represents at least one doped metal element as an electron acceptor selected from the group consisting of Ni, Pt, Ru and the oxidized compound of these metals; ‘a’ represents a % by weight of m, ranging from 0.10 to 5.00; ‘M’ is a catalyst element selected from the group consisting of Mo, V, Al, Cs, Mn, Fe, Pd, Pt, P, Cu, Ag, Ir, Sb, Pb, Ga and Re. ‘z’ represents an atom % of M/(Cd+Zn+M), ranging from 0.05 to 20.00 and ‘x’ and ‘y’ represent an atom % of Cd/(Cd+Zn+M) and an atom % of Zn/(Cd+Zn+M), ranging from 10.00 to 90.00, respectively.

Abstract: A composition and method for improving the adhesion properties of catalytic and adsorptive compositions to a substrate through the addition of clay and/or silicone binder is disclosed. Preferably, the composition includes manganese dioxide and attapulgite clay and/or a silicone polymer which is adhered to a metal substrate, such as a motor vehicle radiator.

Abstract: A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least one aromatic hydroxy compound with oxygen and carbon monoxide in the presence of a carbonylation catalyst system that includes a catalytic amount of an inorganic co-catalyst containing titanium. In various alternative embodiments, the carbonylation catalyst system can include an effective amount of a palladium source and an effective amount of a halide composition. Further alternative embodiments can include catalytic amounts of various inorganic co-catalyst combinations.

Abstract: An improved catalyst including a compound of the formula (I) AaMmNnXxOo  (I) wherein 0.25<a<0.98, 0.003<m<0.5, 0.003<n<0.5, 0.003<x<0.

Abstract: A process for preparing a catalyst is disclosed. The catalyst is useful for the gas phase oxidation of alkanes to unsaturated aldehydes or carboxylic acids.

Abstract: The present invention relates to a layered catalyst composite useful for reducing contaminants in exhaust gas streams, especially gaseous streams containing sulfur oxide contaminants. More specifically, the present invention is concerned with improved catalysts of the type generally referred to as “three-way conversion” catalysts. The layered catalysts trap sulfur oxide contaminants which tend to poison three-way conversion catalysts used to abate other pollutants in the stream. The layered catalyst composites of the present invention have a sulfur oxide absorbing layer before or above a nitrogen oxide absorbing layer. The layered catalyst composite comprises a first layer and a second layer. The first layer comprises a first support and at least one first platinum component. The second layer comprises a second support and a SOX sorbent component having a free energy of formation from about 0 to about −90 Kcal/mole at 350° C.

Abstract: The present invention relates to a composition based on cerium oxide or on cerium and zirconium oxides, in the extruded form, to a process for the preparation thereof and to the use thereof as catalyst. The process for the preparation of the composition of the invention is characterized in that a cerium hydroxide or oxyhydroxide or cerium and zirconium hydroxides or oxyhydroxides are extruded. The composition of the invention can be used as catalyst or catalyst support, in particular in the treatment of exhaust gases from internal combustion engines, in the process for the dehydrogenation of ethylbenzene to styrene, in the catalysis of methanation or in the treatment of a solution or suspension of organic compounds by oxidation via a wet route.

Abstract: A catalyst for recovering elemental sulfur by the selective oxidation of hydrogen sulfide is represented by the following chemical formula: VaTibXcOf wherein, a is such a mole number that vanadium amounts to 5-40% by weight based on the total weight of the catalyst; b is such a mole number that titanium amounts to 5-40% by weight based on the total weight of the catalyst; X is an element selected from the group consisting of Fe, Mn, Co, Ni, Sb and Bi; c is such a mole number that X amounts to 15% by weight or less based on the total weight of the catalyst; and f is such a mole number that oxygen is contained to the final 100% by weight. The catalyst can recover elemental sulfur at high rates for a long period of time without being deteriorated in activity. The high catalytic activity is maintained even when excess water is present in the reaction gas.

Abstract: In a process for preparing C2-oxygenates by reaction of CO and H2over a rhodium-containing supported catalyst, the catalyst comprises, based on the total weight, from 0.01 to 1O% by weight of rhodium, from 0.001 to 10% by weight of zirconium, from 0.01 to 5% by weight of iridium, from 0.01 to 10% by weight of at least one metal selected from among copper, cobalt, nickel, manganese, iron, ruthenium and molybdenum, from 0.01 to 10% by weight of at least one alkali metal or alkaline earth metal selected from among lithium, sodium, potassium, rubidium, magnesium and calcium, on an inert support.

Abstract: A novel catalyst and the use thereof in a reforming process is disclosed. The catalyst comprises a refractory inorganic oxide, platinum-group metal, Group IVA(IUPAC 14) metal, indium and lanthanide-series metal. Utilization of this catalyst in the conversion of hydrocarbons, especially in reforming, results in significantly improved selectivity to the desired gasoline or aromatics product.

Abstract: A catalyst for oxidation of ammonia is of the general formula (AxByO3z)k (MEmOn)f, wherein: A is a cation of Ca, Sr, Ba, Mg, Be, La or mixtures thereof, B is cations of Mn, Fe, Ni, Co, Cr, Cu, V or mixtures thereof, x=0-2, y=1-2, z=0.8-1.7; MemOn is an aluminum oxide and/or oxide of silicon zirconium, chromium, aluminosilicates, oxides of rare earth elements (REE) or mixtures thereof, m=1-3, n=1-2, k and f are % by weight, with the ratio f/k=0.01-1. The catalyst may be granules of different configuration, including blocks of honeycomb structure. The catalyst is thermally stable, resistant to thermal shocks. There is no water runoff.

Abstract: A catalyst structure is formed by forging catalyst support particles from a slurry into the surface of a metal substrate such that the particles protrude from the surface and are permanently fixed into the surface. The forging is accomplished by engaging rollers with the surface as it passes through the slurry to press the particles into the surface. The rollers may be brush rollers, fabric rollers or solid rollers. The particles may be any particles which are capable of having a catalyst deposited thereon and which are hard enough to forge into the metal substrate. The catalyst material is then deposited onto the catalyst support particles.