| Patent Number |
Title Of Patent |
Date Issued |
| 5490977 |
Removal of CO, hydrocarbons and NO.sub.x with catalyst containing platinum rhodium |
February 13, 1996 |
| A catalyst composition suitable for three-way conversion of internal combustion engine, e.g., automobile gasoline engine, exhaust gases includes a catalytic material disposed in on a carrier. The catalytic material contains a co-formed (e.g., co-precipitated) rare earth oxide-zirconi |
| 5474441 |
Catalyst configuration for catalytic combustion systems |
December 12, 1995 |
| A catalyst bed (30) for a combustor (18) for supporting the catalytic combustion of a gaseous air/fuel (e.g., methane or natural gas) combustion mixture contains an igniter catalyst member (1) upstream of a promoter catalyst member (2). The catalyst members each comprise carrier monolith |
| 5472677 |
Method for decomposing N.sub.2 O utilizing catalysts comprising calcined anionic clay minerals |
December 5, 1995 |
| The invention describes a highly efficient catalytic pollution control process for removing N.sub.2 O from gaseous mixtures. The process utilizes catalysts derived from anionic clay minerals, which after appropriate heat activation, provide superior N.sub.2 O decomposition activity. The |
| 5462907 |
Ceria-alumina oxidation catalyst |
October 31, 1995 |
| Oxidation catalyst compositions include a catalytic material containing ceria and alumina each having a surface area of at least about 10 m.sup.2 /g, for example, ceria and activated alumina in a weight ratio of from about 1.5:1 to 1:1.5. Optionally, platinum may be included in the c |
| 5453263 |
Halide-free process for the synthesis of ETS-10 |
September 26, 1995 |
| A novel process for the preparation of a crystalline titanium molecular sieve zeolite identified as ETS-10 characterized by crystals of uniform morphology which is free from halide-containing reactants is disclosed. |
| 5451388 |
Catalytic method and device for controlling VOC. CO and halogenated organic emissions |
September 19, 1995 |
| A method and device for treating a gas stream comprising at least one non-halogenated carbonaceous compound and optionally at least one halogenated organic compound. The gas stream, at 100.degree. C. to 650.degree. C. and in the presence of oxygen is contacted with a first catalyst i |
| 5422331 |
Layered catalyst composition |
June 6, 1995 |
| A catalyst composition contains a catalytic material having having an undercoat layer containing a mixture of a fine particulate undercoat refractory metal oxide and a sol such as a silica sol, the undercoat providing good adherence to substrates, such as metal substrates, on which t |
| 5419121 |
Method and apparatus for reduction of pollutants emitted from automotive engines by flame incine |
May 30, 1995 |
| A method of improving the performance of a pollutant abatement means, e.g., catalytic converter (16), used to purify engine exhaust gas streams and the like includes combusting a combustion mixture of air and a low ignition temperature fuel in the exhaust gas stream upstream of the c |
| 5418201 |
Hydrogenation catalyst and process for preparing same |
May 23, 1995 |
| In one embodiment, the invention relates to a catalyst in powdered form comprising the oxides of copper, iron, aluminum and manganese wherein the atomic ratio of copper to iron is at least 1:1. In another embodiment, the invention relates to a process for preparing such hydrogenation cat |
| 5413978 |
Catalytically inert particles for blending with petroleum cracking catalyst |
May 9, 1995 |
| A method for converting attapulgite clay which has never been heat treated sufficiently to destroy the natural colloidal properties of the clay to attrition resistant, low surface area, essentially catalytically inert particles adapted for use as a blending agent with particles of active |
| 5411587 |
Paper coating kaolin pigments their preparation and use |
May 2, 1995 |
| Paper coating pigments comprising mechanically delaminated kaolin particles. The pigments possess the opacification, smoothness and printability advantages of conventional delaminated kaolin pigments but have desirably low viscosity and gloss not characteristic of conventional delami |
| 5407652 |
Method for decomposing N20 utilizing catalysts comprising calcined anionic clay minerals |
April 18, 1995 |
| The invention describes a highly efficient catalytic pollution control process for removing N.sub.2 O from gaseous mixtures. The process utilizes catalysts derived from anionic clay minerals, which after appropriate heat activation, provide superior N.sub.2 O decomposition activity. The |
| 5401483 |
Catalyst assembly providing high surface area for nitric acid and/or HCN synthesis |
March 28, 1995 |
| A catalyst assembly is disclosed which comprises a plurality of foraminous wire mesh sheets disposed in intimate nested relation to each other along their broad surfaces, the wire sheets defining a non-planar cross-section which consists of a plurality of undulating corrugations. The bor |
| 5395809 |
Modified microsphere FCC catalysts |
March 7, 1995 |
| An in situ process for making improved zeolitic fluid cracking catalyst by spray drying a mixture of hydrous kaolin and spinel, essentially free from metakaolin, calcining the resulting microspheres to convert the hydrous kaolin to metakaolin, and reacting microspheres composed of a mixt |
| 5393340 |
Metakaolin pigment with high brightness and low abrasion and manufacture thereof from soft kaoli |
February 28, 1995 |
| The invention relates to novel metakaolin pigments which are characterized by a unique combination of exceptionally high brightness and exceptionally low abrasion along with the excellent hiding power equal to that achieved by premium conventional calcined kaolin pigments. The invention |
| 5391526 |
Situ method for producing hydrosulfite bleach and use thereof |
February 21, 1995 |
| A process for reacting metallic iron with sulfur dioxide (SO.sub.2) gas in the presence of water and bleachable matter, especially iron-contaminated kaolin clay, whereby the kaolin or the like is bleached in situ and the viscosity of the kaolin is less than it would be if bleached in a |
| 5384300 |
Stabilized catalyst carrier and improved carrier configuration for catalytic combustion system |
January 24, 1995 |
| A catalyst member for use in processes for the catalytic combustion of gaseous carbonaceous fuels is made from a stabilized carrier having a plurality of gas flow passages extending therethrough defined by channel walls and a catalyst material disposed on the channel walls, wherein the |
| 5384041 |
Composition for passivating vanadium in catalytic cracking and preparation thereof |
January 24, 1995 |
| Disclosed is a vanadium trap for use in FCC which comprises a major amount of calcined kaolin clay, free magnesium oxide and an in situ formed magnesium silicate cement binder. Also disclosed are procedures for the preparation of the trap by forming a slurry in water of hydrous kaolin |
| 5378142 |
Combustion process using catalysts containing binary oxides |
January 3, 1995 |
| A catalyst composition containing one or more binary oxides of palladium and rare earth metal such as Ce, La, Nd, Pr and/or Sm. The catalyst composition is used for the catalytic combustion of gaseous combustion mixtures of oxygen and carbonaceous fuels such as methane, e.g., a natural |
| 5371054 |
Compositions for use as diagnostic animal litter and methods for their preparation |
December 6, 1994 |
| Disclosed are compositions suitable for use as a litter for the accumulation of animal urine comprised of at least one uncalcined clay substrate, said substrate characterized by having a calcium oxide content of less than about 5% by weight and wherein the clay mineral component of s |
| 5358120 |
Selective separation of finely-divided minerals by addition of selective collector reagent and c |
October 25, 1994 |
| Separation of impurities from kaolin clay is accomplished by conditioning a dispersed aqueous pulp of the clay with an anionic flotation collector, followed by centrifugation or the like to cause the impurities to settle from a dispersed pulp of the clay without an intermediate froth flo |
| 5357908 |
Fuel modification method and apparatus for reduction of pollutants emitted from internal combust |
October 25, 1994 |
| A method for controlling exhaust gas emissions from an engine (16) includes extracting a light distillate fuel (Fd) from conventional gasoline or other liquid hydrocarbon fuel and supplying the engine with the light distillate fuel during an initial operation period of the engine. This |
| 5356847 |
Nickel catalyst |
October 18, 1994 |
| A formed nickel catalyst useful in fixed bed hydrogenation of fatty materials is described. The catalyst comprises from about 10% to about 50% by weight of nickel and from about 3% to about 30% by weight of at least one clay mineral binder. The catalyst may also contain from about 20% to |
| 5347046 |
Catalyst and process for using same for the preparation of unsaturated carboxylic acid esters |
September 13, 1994 |
| Disclosed are catalyst compositions comprising (i) one or more palladium group metals and/or compounds thereof; (ii) gold and/or compounds thereof; and (iii) optionally, an effective amount of one or more promoters selected from the group consisting of copper, nickel, cobalt, iron, m |
| 5346535 |
Use of crystalline molecular sieves containing charged octahedral sites in removing volatile org |
September 13, 1994 |
| Crystalline molecular sieves containing octahedral sites such as the sieves known as ETS-4, ETS-10 and ETAS-10 are used to remove volatile organic compounds from a mixture of the same with moist air at ambient temperature. |
| 5345005 |
Hydrogenation catalyst, process for preparing and process of using said catalyst |
September 6, 1994 |
| In one embodiment, the invention relates to a catalyst in powdered form which comprises a major amount of the oxides of copper and zinc, and a minor amount of aluminum oxide wherein the pore volume of pores of said catalysts having a diameter between about 120 and about 1000 .ANG. is at |
| 5342443 |
Method for bleaching kaolin clay |
August 30, 1994 |
| An improved method for improving the brightness of clay of the type that is capable of being bleached by an oxidative reagent such as Georgia gray kaolin. Such clay, in the form of a dispersed slurry, is treated with a combination of sodium silicate, sodium hypochlorite and ozone, most |
| 5340516 |
Thermal shock and creep resistant porous mullite articles prepared from topaz and process for ma |
August 23, 1994 |
| Particles of an interconnected three-dimensional network of bar-like topaz crystals are used as a reactant (with added silicon dioxide, or a mixture with added silicon dioxide and hydrated aluminum fluoride or added silicon dioxide, hydrated aluminum fluoride and alumina) to form mullite |
| 5328880 |
Fluidity of slurries of kaolin clay using tetraalkylammonium compounds |
July 12, 1994 |
| The present invention relates to a process for reducing the inherent low shear viscosity of kaolin clays contaminated with expandable layer minerals. A water soluble tetraalkyl ammonium compound is contacted with the clay during conventional wet processing. |
| 5328506 |
Pigment products in an agglomerated form and use thereof in bulk shipments |
July 12, 1994 |
| Pigments in a form for bulk shipment are prepared by kneading dry pigment particles with a limited amount of water or an aqueous slurry of pigment particles to form dough-like, dust-free agglomerates which are shipped without subsequent drying and/or compaction. |
| 5326381 |
Use of polytetrafluoroethylene resin particles to reduce the abrasion of abrasive pigments |
July 5, 1994 |
| A trace amount of a polytetrafluoroethylene resin is incorporated with an abrasive pigment prior to or during the preparation of an aqueous pigment slurry or is applied to dry pigment to reduce the abrasivity of the pigment. The treated pigment can be employed in the manufacture of fille |
| 5311997 |
Selective separation of finely-divided minerals by addition of selective collector reagent and c |
May 17, 1994 |
| Separation of impurities from kaolin clay is accomplished by conditioning a dispersed aqueous pulp of the clay with an anionic flotation collector, followed by centrifugation or hydrocloning to cause the impurities to settle from a dispersed pulp of the clay without an intermediate froth |
| 5300469 |
Composition for passivating vanadium in catalytic cracking and preparation thereof |
April 5, 1994 |
| Disclosed is a vanadium trap for use in FCC which comprises a major amount of calcined kaolin clay, free magnesium oxide and an in situ formed magnesium silicate cement binder. Also disclosed are procedures for the preparation of the trap by forming a slurry in water of hydrous kaolin |
| 5283041 |
Catalytic incineration of organic compounds |
February 1, 1994 |
| A catalyst is disclosed for treating gas streams containing organic compounds such as halogenated organic compounds. The catalyst is comprised of vanadium oxide, zirconium oxide and at least one oxide of manganese, cerium or cobalt.Also disclosed is a process for treating gas streams usi |
| 5282898 |
Use of surfactants in processing abrasive pigments |
February 1, 1994 |
| The present invention provides a simple inexpensive means to decrease the abrasivity of abrasive pigments such as calcined kaolin and titania. In accordance with this invention, a trace of a nonionic and/or anionic surfactant is incorporated with abrasion pigment prior to or during the |
| 5281753 |
Process for the selective hydrogenation and isomerization of hydrocarbons |
January 25, 1994 |
| A process for the selective hydrogenation and simultaneous isomerization of hydrocarbons in a feed stream (12) containing a mixture of hydrocarbons of varying degrees of unsaturation and having 4 or more carbon atoms. The process comprises contacting the mixture with hydrogen gas under |
| 5277931 |
Composite ion-exchange material, preparation and use thereof |
January 11, 1994 |
| Inorganic hydrated metal oxide and metal silicate gels are supported on the surface of particles of porous material by precipitation therein without significant deposit within pores of the support material and without encapsulating the particles of porous material. Especially preferred |
| 5254519 |
Catalyst composition containing platinum and rhodium components |
October 19, 1993 |
| A catalyst composition suitable for three-way conversion of internal combustion engine, e.g., automobile gasoline engine, exhaust gases includes a catalytic material disposed in on a carrier. The catalytic material contains a co-formed (e.g., co-precipitated) rare earth oxide-zirconi |
| 5252272 |
Thermal shock and creep resistant porous mullite articles prepared from topaz and process for ma |
October 12, 1993 |
| Particles of an interconnected three-dimensional network of bar-like topaz crystals are used as a reactant (with added silicon dioxide, or a mixture with added silicon dioxide and hydrated aluminum fluoride or added silicon dioxide, hydrated aluminum fluoride and alumina) to form mullite |
| 5246494 |
Mixed coupled azo pigments |
September 21, 1993 |
| (1) A mixed coupled azo pigment prepared from:(A) 30% to 70% of two or more diazonium components, at least one derived from a monoaryl amine and(B) an organic coupling component, said pigment containing one or more COOH or SO H groups or esters, amides, alkali metal or alkali earth metal sal |
| 5244650 |
Large-pored molecular sieves with charged octahedral titanium and charged tetrahedral aluminum s |
September 14, 1993 |
| A crystalline-titanium-aluminum-silicate molecular sieve is disclosed having both di-charged octahedrally coordinated titanium and mono-charged tetrahedrally coordinated aluminum in its framework. |
| 5243121 |
Fluid catalytic cracking process for increased formation of isobutylene and isoamylenes |
September 7, 1993 |
| A composite fluid catalytic cracking catalyst comprising a non-zeolitic component of at least 45% Al.sub.2 O.sub.3 and containing .ltoreq.30% Y zeolite with unit cell size .ltoreq.24.29 .ANG., the matrix (non-zeolitic component) of said catalyst having a B.E.T. surface area .gtoreq.50 |
| 5243095 |
Hydrogenation catalyst, process for preparing and process for using said catalyst |
September 7, 1993 |
| In one embodiment, the invention relates to a catalyst in powdered form comprising the oxides of copper, iron, aluminum and manganese wherein the atomic ratio of copper to iron is at least 1:1. In another embodiment, the invention relates to a process for preparing such hydrogenation cat |
| 5238881 |
Stable color dispersions, their preparation and use in ceramic glazes |
August 24, 1993 |
| A colored ceramic glaze is prepared from a raw glaze containing glass frit, clay and one or more ceramic pigments added as an aqueous dispersion. The raw glaze is ball-milled after which it is blended with the aqueous dispersion. The dispersion contains up to 70% of a ceramic pigment, su |
| 5232881 |
Use of surfactants in processing abrasive pigments |
August 3, 1993 |
| The present invention provides a simple inexpensive means to decrease the abrasivity of abrasive pigments such as calcined kaolin and titania. In accordance with this invention, a trace of a nonionic surfactant of the general formula ##STR1## is incorporated with abrasive pigment |
| 5228980 |
Fluidized catalytic cracking process employing shell-coated FCC catalysts |
July 20, 1993 |
| A novel shell-coated FCC catalyst is disclosed wherein the shell is a mixture of at least one refractory metal oxide or silicate or precursor thereof (preferably clay) having a particle size of 0.3 to 5 microns and an inorganic refractory binder (preferably silica) having a particle size |
| 5223022 |
Ion-exchange agent and use thereof in extracting heavy metals from aqueous solutions |
June 29, 1993 |
| A novel ion-exchange agent, an aluminum-enriched analogue to the zeolite chabazite, hereinafter "Al-Chab" is disclosed. The Al-Chab is used in processes for recovering precious metals from aqueous solutions or for removing toxic heavy metals from contaminated aqueous streams. |
| 5216875 |
Catalytic combustion process using supported palladium oxide catalysts |
June 8, 1993 |
| A process for operating a palladium oxide-containing catalytic combustor is useful, e.g., for powering a gas turbine. The palladium oxide is supported on a metal oxide such as alumina, lanthanide metal oxide-modified alumina, ceria, titania or tantalum oxide. The method involves maintain |
| 5214912 |
Process conditions for operation of ignition catalyst for natural gas combustion |
June 1, 1993 |
| A method for operating a palladium oxide containing catalytic combustor useful, e.g., for powering a gas turbine, wherein the palladium oxide is supported on a metal oxide such as alumina, ceria, titania or tantalum oxide. The method involves maintaining control of the temperature within |
| 5212142 |
High performance thermally stable catalyst |
May 18, 1993 |
| A catalyst composition includes a carrier on which is disposed a catalytic material which may optionally be provided in discrete first and second coats. The catalyst material contains, e.g., in the first coat, a refractory inorganic oxide first support having a catalytically effective |
