Of Nickel Patents (Class 502/337)
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Patent number: 5330955Abstract: A process and novel catalyst for the carbonylation of one or more of alcohols, ethers and ether alcohols to esters and, optionally, to carboxylic acids. The reaction is effected in the vapor state over a solid catalyst comprising a polyoxometalate anion in which the metal is at least one taken from Group V and VI of the Periodic Chart of the Elements complexed with a cation from a member of Group VIIIA of the Periodic Chart of the Elements. Preferably, the catalyst is deposited on a support that is inert to the reaction. The preferred support is silica.Type: GrantFiled: March 17, 1993Date of Patent: July 19, 1994Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventor: Richard W. Wegman
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Patent number: 5320998Abstract: This invention provides a catalyst for purifying exhaust gases of a diesel engine, said catalyst comprising at least one element selected from nickel and cobalt and optionally a copper element. Further, this invention provides a catalyst for purifying exhaust gases of a diesel engine, said catalyst comprising a refractory three-dimensional structure and deposited thereon a catalyst component comprising the above elements and a refractory inorganic oxide. These catalysts can remove harmful ingredients contained in exhaust gases of a diesel engine, such as carbonaceous fine particles, unburned hydrocarbons, carbon monoxide, etc. by burning from low temperatures and suppress sulfate formation from sulfur dioxide.Type: GrantFiled: August 28, 1992Date of Patent: June 14, 1994Assignee: Nippon Shokubai Co., Ltd.Inventor: Makoto Horiuchi
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Patent number: 5258340Abstract: This invention relates to improved catalysts for the oxidation of carbon monoxide and methods of preparing these catalysts. The catalysts of this invention are prepared using a sequential precipitation process which generates catalysts that contain substantially layered metal oxides, both supported and unsupported, and, in some embodiments of the invention, a noble metal or mixture of noble metals layered on the metal oxides. These catalysts are particularly useful in smoking articles.Type: GrantFiled: February 15, 1991Date of Patent: November 2, 1993Assignee: Philip Morris IncorporatedInventors: Robert L. Augustine, Setrak Tanielyan
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Patent number: 5238898Abstract: There is provided a catalyst and a process for the direct partial oxidation of methane with oxygen, whereby hydrocarbons having at least two carbon atoms are produced. The catalyst used in this reaction is a spinel oxide, such as MgMn.sub.2 O.sub.4 or CaMn.sub.2 O.sub.4, modified with an alkali metal, such as Li or Na.Type: GrantFiled: August 26, 1992Date of Patent: August 24, 1993Assignee: Mobil Oil Corp.Inventors: Scott Han, Lorenzo C. DeCaul, Robert E. Palermo, Dennis E. Walsh
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Patent number: 5229345Abstract: Method of making a catalytic metal oxide selective to catalyzing the conversion of given gas species, comprising intimately supporting a solid film of catalytic metal oxide (i.e., TiO.sub.2, SnO.sub.2, FeO, SrTiO.sub.3, CoO) on an electrically conducting material (i.e., Au, Pt, TiN, Pd, Rh, Ni, Co), the film having an exposed outer surface spaced no greater than 1000 angstroms from said conducting material, the composition of the conducting material being matched to the composition of the oxide to change the electron state of the exposed outer surface to promote only a reaction between given gas species and said oxide.A composite metal oxide catalyst system, comprising: a substantially nonconducting support; an electrically conducting film on the support; and a catalytically active ultra-thin outer layer of a catalytic metal oxide on and in intimate contact with the conducting film.Type: GrantFiled: May 4, 1992Date of Patent: July 20, 1993Assignee: Ford Motor CompanyInventors: Eleftherios M. Logothetis, Richard E. Soltis
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Patent number: 5221656Abstract: A hydroprocessing catalyst and process of using such catalyst wherein such catalyst has at least one hydrogenation metal deposited on an inorganic oxide support and is further characterized by a surface area of greater than about 220 m.sup.2 /g, a pore volume of about 0.23-0.30 cc/g in pores greater than about 600 Angstroms radius, an average pore radius of about 30-70 Angstroms in pores less than 600 Angstroms, and an incremental pore volume curve with a maximum at about 25-50 Angstroms radius.Type: GrantFiled: March 25, 1992Date of Patent: June 22, 1993Assignee: Amoco CorporationInventors: Frederick T. Clark, Albert L. Hensley, Jr., Simon G. Kukes, David C. Arters
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Patent number: 5217938Abstract: A zirconia-based catalyst is prepared by mulling a mixture of a zirconia source and a solvent, which mixture has a solids content of from 20% by weight to 60% by weight, and extruding the mixture.Type: GrantFiled: April 21, 1992Date of Patent: June 8, 1993Assignee: Shell Oil CompanyInventors: Donald Reinalda, Paul Blankenstein
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Patent number: 5182249Abstract: A non-precious metal three-way catalyst which reduces hydrocarbon, carbon monoxide, and nitrogen oxide from internal combustion engine exhaust and industrial emissions, with a conversion capability comparable to the conversion efficiencies of current precious metal catalysts, and with superior NO.sub.x conversion characteristics, and durable when operated under prolonged high temperature conditions. The light-off temperature is close to the light-off temperature of convertional precious metal catalysts. The active catalytic components in this catalyst are a mixture of rare-earth metal and non-noble metal oxides.Type: GrantFiled: February 6, 1991Date of Patent: January 26, 1993Assignee: East China University of Chemical TechnologyInventors: Ren Wang, Shanliang Wu, Zhigang Zhang
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Patent number: 5180872Abstract: The title compounds can be prepared by reaction of a styrene derivative with ethylene in the presence of a nickel catalyst which carries a phosphorus-oxygen chelate ligand, at a temperature of 20.degree.to 160.degree. C. and an ethylene pressure of 1 to 200 bar. Styrene derivatives extended with ethylene, of the formula ##STR1## in which R.sup.19 denotes hydrogen, C.sub.1 -C.sub.4 -alkyl, vinyl or chlorine and R.sup.38 denotes C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -alkenyl, C.sub.2 -C.sub.7 -acyl, flourine, chlorine or bromine andm assumes values of 4-104,with the exception of compounds wherein R.sup.19 denotes hydrogen and R.sup.38 denotes i-butyl or benzoyl, and m assumes the value 4, are new.Type: GrantFiled: May 23, 1991Date of Patent: January 19, 1993Assignee: Bayer AktiengesellschaftInventor: Karl-Heinz A. O. Starzewski
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Patent number: 5176892Abstract: The present invention is a process for the production of silanes from the contact of silicon metal or a silicon containing material with hydrogen chloride. The described process employs a metal or metal compound on a solid support as a catalyst which increases the production of tetrachlorosilane. The metal or metal compound is selected from a group consisting of palladium and palladium compounds, rhodium and rhodium compounds, platinum and platinum compounds, iridium and iridium compounds, tin and tin compounds, nickel and nickel compounds, and aluminum and aluminum compounds. The process is run at a temperature of about 250.degree. C. to 500.degree. C.Type: GrantFiled: December 6, 1990Date of Patent: January 5, 1993Assignee: Dow Corning CorporationInventors: Roland L. Halm, Brian M. Naasz, Regie H. Zapp
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Patent number: 5160720Abstract: The present invention is a process for the production of silanes from the contact of hydrogen chloride with silicon. The silicon may be in the form of silicon metal or a silicon containing material. The described process employs a catalyst which increases the yield of tetrachlorosilane. The catalyst is selected from a group consisting of tin and tin compounds, nickel and nickel compounds, arsenic and arsenic compounds, palladium and palladium compounds, and mixtures thereof. The process is run at a temperature of about 250.degree. C. to 500.degree. C.Type: GrantFiled: December 12, 1990Date of Patent: November 3, 1992Assignee: Dow Corning CorporationInventors: Roland L. Halm, Regie H. Zapp
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Patent number: 5134108Abstract: This hydrogenation catalyst comprises a major amount of the oxides of a first metal selected from copper or zinc, a second metal selected from chromium, molybdenum, tungsten and vanadium, and optionally, a minor amount of the oxide of a promoter metal selected from the group consisting of manganese, barium, zinc, nickel, cobalt, cadmium, iron and any combination thereof provided that the promotor metal is not zinc if the first metal is zinc. The average particle diameter of the powder is from about 6 to about 20 microns; and the particle surface area is from about 20 to about 70 m.sup.2 /g.Type: GrantFiled: May 22, 1991Date of Patent: July 28, 1992Assignee: Engelhard CorporationInventors: Deepak S. Thakur, Eugene Palka, Thomas J. Sullivan, Eugene Nebesh, Brian D. Roberts
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Patent number: 5110781Abstract: A process for the preparation of an alumina-based catalyst which comprises:(a) selecting an alumina catalyst having a bulk density of at least 0.6 g/ml and a pore volume of less than 0.6 ml/g;(b) heating the alumina of (a) to a temperature of at least 1000.degree. C. in the presence of a sintering agent containing at least one metal selected from nickel, chromium, cobalt and platinum; and(c) recovering a sintered alumina-based catalyst having a bulk density and an attrition resistance greater than that of the alumina of (a). Catalysts prepared by this process are useful in hydrocarbon conversion processes.Type: GrantFiled: April 25, 1991Date of Patent: May 5, 1992Assignee: The British Petroleum Company p.l.c.Inventors: David C. Griffiths, Brian Kneale
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Patent number: 5110779Abstract: The hydrogenation of unsaturated polymers is effected employing a heterogeneous catalyst comprising a Group VIII metal and a porous support wherein the porous support is characterized by a pore size distribution such that at least 95% of the pore volume is defined by pores having diameters greater than 450 angstroms and the ratio of metal surface area to carrier surface area is in the range from about 0.07-0.75:1.Type: GrantFiled: May 7, 1991Date of Patent: May 5, 1992Assignee: The Dow Chemical CompanyInventor: Dennis A. Hucul
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Patent number: 5106802Abstract: A catalyst for the purification of the exhaust gas from a diesel engine, which catalyst comprises a honeycomb carrier possessing through holes disposed parallelly to the direction of flow of the exhaust gas and a catalyst component possessing a specific surface area of not more than 200 m.sup.2 /g and deposited on said carrier in a ratio of from 0.01 to 100 g per liter of said carrier and which catalyst possesses a specific surface area of from 0.1 to 5,000 m.sup.2 /liter of said catalyst.Type: GrantFiled: February 25, 1991Date of Patent: April 21, 1992Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Makoto Horiuchi, Koichi Saito
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Patent number: 5094989Abstract: Disclosed is a process for making an activated antimony and vanadium-containing catalyst in oxide form having an atomic ratio of Sb:V in the range from 0.8-4, which comprises calcining such an oxidic vanadium and antimony-containing composition at a temperature of over 750.degree. C., and thereafter contacting said calcined catalyst with a hydroxy compound in liquid form selected from (1) cyclohexanol, (2) cyclopentanol, (3) a monohydroxy, acyclic hydrocarbon having 1-8 C atoms, and (4) a dihydroxy, acyclic hydrocarbon having 2-4 carbon atoms, and separating as a liquid said compound from said catalyst insofar as it is present beyond the amount wetting said catalyst, and thereafter drying said catalyst.Type: GrantFiled: December 21, 1990Date of Patent: March 10, 1992Assignee: The Standard Oil CompanyInventors: Charles S. Lynch, Linda C. Glaeser, James F. Brazdil, Jr., Mark A. Toft
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Patent number: 5081083Abstract: Alternate, successive high temperature oxidation and reduction treatments, in either order, of intermetallic alloy hydrogenation and intermetallic alloy oxidation catalysts unexpectedly improves the impurity poisoning resistance, regeneration capacity and/or activity of the catalysts. The particular alloy, and the final high temperature treatment given alloy (oxidation or reduction) will be chosen to correspond to the function of the catalyst (oxidation or hydrogenation).Type: GrantFiled: February 12, 1990Date of Patent: January 14, 1992Assignee: The United States of America as represented by the Secretary of the Department of EnergyInventor: Randy B. Wright
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Vapor deposited metal catalytic film, process for making the same and liquid container with the film
Patent number: 5077258Abstract: Metal catalytic film comprising a flexible substrate having a surface, a catalytic metal layer adherent to said surface of the substrate and having a thickness ranging from 200 to 1000 Angstroms.Method for forming metal catalytic film on a flexible substrate having a surface in a vacuum chamber comprising the steps of evacuating the vacuum chamber to a predetermined vacuum, introducing a substantially inert heavy gas into the vacuum chamber, creating a vapor stream of molecules of a catalytic metal in the vacuum chamber whereby the molecules of the catalytic metal are scattered by the inert heavy gas and are subsequently deposited upon the surface of the substrate to form a catalytic metal layer to a thickness ranging from 200 to 1000 Angstroms.Type: GrantFiled: June 15, 1990Date of Patent: December 31, 1991Assignee: Flex Products, Inc.Inventors: Roger W. Phillips, Lauren R. Wendt -
Patent number: 5051156Abstract: An electrocatalytic process for the partial oxidation of methane employs an electrocatalyst in the form of a deposit catalyst comprising an electrode having a conducting catalyst layer deposited thereon. The catalyst comprises an element selected from the group consisting of Group IB metals, Group VIB metals, Group VIII metals and mixtures thereof.Type: GrantFiled: January 31, 1990Date of Patent: September 24, 1991Assignee: Intevep, S.A.Inventors: Benjamin Scharifker, Omar Yepez, Juan Carlos De Jesus, Maria M. Ramirez De Agudelo
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Patent number: 5036037Abstract: Process for producing catalysts for use within hydrogenation, oxidation, dehydration or dehydrogenation processes comprising oxides, in pure or mixed form, or being applied as mixed crystal systems, made of nickel, cobalt and molybdenum, vanadium, tungsten, titanium and chromium, starting with their corresponding aqueous solutions of their respective chlorides, fluorides or nitrates, which afterwards are processed within a pyrohydrolysis plant to gain the oxide powders, of typical specific surfaces areas of 1 to 100 m.sup.2 /g, agglomerate sizes of 1 to 500 microns and mean particle sizes of 20 to 30 microns. The corresponding anions of these salt solutions are transformed during pyrohydrolysis into their respective acids, which can be regained by absorptive means and which thereafter can be returned to a chemical dissolving process to make the salts and solutions for the pyrohydrolysis, which means an economic advantage.Type: GrantFiled: May 4, 1990Date of Patent: July 30, 1991Assignee: Maschinenfabrik Andritz AktiengesellschaftInventors: Wolfgang Kladnig, Heinz Krivanec
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Patent number: 5036038Abstract: The present invention pertains to novel solid solutions involving NiO, V.sub.2 O.sub.3 and TiO.sub.2 and the method for their preparation. The compositions involving NiO, V.sub.2 O.sub.3 and TiO.sub.2 fall within the shaded area of a polygon in a ternary composition diagram of NiO, V.sub.2 O.sub.3 and TiO.sub.2 as shown in the drawing herein e.g., FIG. 1. The composition may be used as an oxidation catalyst or in the manufacture of high temperature refractories.Type: GrantFiled: April 12, 1990Date of Patent: July 30, 1991Assignee: Texaco Inc.Inventors: Arnulf Muan, Mitri S. Najjar
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Patent number: 5030608Abstract: Composite materials which contain small particles of metal or metal oxide an oxide matrix are prepared by a process which comprises a) subjecting (1) one or more metal compounds and (2) one or more bifunctional compounds which contain at least one group capable of complexing the metal and at least one group which forms an inorganic network during the polycondensation, and if appropriate (3) one or more network-forming agents which are capable of polycondensation to the conditions of a complexing reaction and hydrolytic polycondensation by the sol-gel process in a liquid reaction medium, compounds (1), (2) and (3) being soluble in the reaction medium, and b) oxidizing the resulting polycondensate to form a composite material which contains small metal oxide particles with the very narrow particle size distribution in an oxide matrix, and if appropriate c) reducing the metal oxide particles of the resulting composite material to the metal.Type: GrantFiled: February 22, 1990Date of Patent: July 9, 1991Assignee: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.Inventors: Ulrich Schubert, Sabine Amberg-Schwab, Boris Breitscheidel, Helmut Schmidt
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Patent number: 5008234Abstract: Compositions of matter useful as catalysts in heterogeneous reactions and comprising metal atom clusters supported on inorganic supports such as silica, alumina or zeolites are prepared by vaporizing the metal at low temperatures and pressures into an environment of ethylene and a gaseous inert solvent. A metal-ethylene complex, protected by solvent molecules is formed. The complex is melted to liquid phase and used to impregnate the support. Then the material is warmed to ambient temperature to remove the solvent, decompose the complex and form monatomic or clusters of metal on the support.Type: GrantFiled: January 13, 1989Date of Patent: April 16, 1991Assignee: Her Majesty the Queen in the right of Canada, as represented by the Minister of Energy Mines and ResourcesInventors: Geoffrey A. Ozin, Helmut X. Huber, Richard A. Prokopowicz, John Godber
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Patent number: 4992408Abstract: A catalyst for decomposing an oxidizing agent, such as hypochlorite ions, in an effluent comprises an intimate mixture of at least one finely divided Group IIA oxide and finely divided nickel oxide, and/or hydrates thereof, supported on pieces of a non-porous substantially inert material. Some of the nickel may be replaced by cobalt. The Group IIA oxide forms 0.5 to 50% by weight of said intimate mixture. The nickel and Group IIA oxides may be applied by contacting the support with a solution of suitable salts, e.g. nitrates. Where the support is a Group IIA compound, e.g. magnesia, the Group IIA oxide may be incorporated into the intimate mixture by contacting the support with an acid solution of the nickel salt. In use the nickel oxide is oxidized to a higher oxidation state than NiO.Type: GrantFiled: August 30, 1989Date of Patent: February 12, 1991Assignee: Imperial Chemical Industries plcInventor: Samuel D. Jackson
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Patent number: 4992406Abstract: A process for the preparation of novel binder-containing titania supports, and catalyst compositions of improved porosity prepared from such supports, useful for Fischer-Tropsch synthesis. The supports are prepared by incorporating a small amount of an inorganic metal oxide binder, constituted of alumina, zirconia or silica, with titania. The catalysts are prepared by dispersing a catalytically effective amount of a metal, or metals, preferably cobalt, or cobalt plus an additional metal, or metals, catalytically active in a Fischer-Tropsch reaction on the titania binder support.Type: GrantFiled: November 23, 1988Date of Patent: February 12, 1991Assignee: Exxon Research and Engineering CompanyInventors: Charles H. Mauldin, Kenneth L. Riley
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Patent number: 4950812Abstract: A single-step process for the conversion of polysaccharides to polyhydric alcohols by hydrogenation at high pressure and temperature in the presence of a catalyst comprising (i) a supported metal selected from ruthenium, copper, nickel, cobalt and their mixtures, the metal being highly dispersed on the support so as to be capable of adsorbing more than 0.58 molecules of CO per atom of metal, and (ii) a solid having acidic functions, which may or may not be identical to the support, the solid having sufficient acid functions so that the rate constant of hydrolysis of sucrose on the catalyst is greater than 70% of the rate constant of hydrogenation of glucose on the catalyst. The process gives substantially pure polyhydric alcohols in a single step.Type: GrantFiled: February 22, 1989Date of Patent: August 21, 1990Assignee: Fina Research S.A.Inventors: Pierre Jacobs, Herve Hinnekens
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Patent number: 4916108Abstract: A process for producing supported metal catalysts having increased catalytic activity is provided. This process includes the steps of forming a high surface area porous support of a suitable porous material such as alumina or zirconia, dissolving a salt of a selected catalytic metal in an appropriate supercritical fluid solvent, contacting the porous support with the supercritical fluid solution of the catalytic metal salt to impregnate the porous support with the solution so that the catalytic metal salt may be adsorbed on the surfaces of the support, and removing the supercritical fluid solvent by reducing the pressure or increasing the temperature to change the supercritical fluid from the supercritical fluid phase to the gas phase, which may then be recycled for further use. The insoluble catalytic metal salt is deposited in the form of a film on the surfaces of the support.Type: GrantFiled: August 25, 1988Date of Patent: April 10, 1990Assignee: Westinghouse Electric Corp.Inventors: David F. McLaughlin, Michael C. Skriba
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Patent number: 4912077Abstract: This invention is directed to the preparation of articles exhibiting catalytic activity and, in particular, to articles which are exceptionally suitable for catalytically converting gases from organically fueled power plants, internal combustion engines, and other fluid and gaseous catalysis. The inventive articles comprise a unitary composite structure consisting essentially of a catalytically active precious metal and/or a base metal which, the base metals in particular, become catalytically active upon oxidation. The catalysts are integrally combined with a supporting structural metal.Type: GrantFiled: July 15, 1988Date of Patent: March 27, 1990Assignee: Corning IncorporatedInventors: Irwin M. Lachman, Mallanagouda D. Patil, Jimmie L. Williams, Raja R. Wusirika
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Patent number: 4898845Abstract: A new method for the use of microcrystallites of various materials as catalysts. The materials include metals, metal alloys and mixtures, and intermetallic compounds all of which are used as heterogeneous catalysts on porous supports. The method is different in that the microcrystallites are dispersed in molten salts which are to be used as a thin film coated on the internal surface of porous supports.Type: GrantFiled: December 12, 1988Date of Patent: February 6, 1990Assignee: University of Iowa Research FoundationInventors: Ravindra Datta, Darrell P. Eyman
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Patent number: 4888317Abstract: A structure with encapsulated catalyst-agglomerate bodies which are integral to a porous structure is presented. The catalysts may be singly and/or multiply dispersed on and/or throughout a high surface area material and subsequently mixed with batch material prior to firing the structure. This results in a structure wherein encapsulated catalyst-agglomerate bodies in a porous structure exhibit the same catalytic activity as in a break in aged catalyst coated substrate.Type: GrantFiled: July 15, 1988Date of Patent: December 19, 1989Assignee: Corning IncorporatedInventors: Thomas P. DeAngelis, Irwin M. Lachman, Raja R. Wusirika
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Patent number: 4886582Abstract: A catalyst useful for hydroprocessing a hydrocarbon-containing oil contains at least one hydrogenation component on an amorphous, porous refractory oxide. The catalyst is prepared by impregnating support particles having a narrow pore size distribution and a mode pore diameter from about 70 to 80 angstroms with a solution containing a precursor of the hydrogenation components, followed by drying and calcining. The catalyst is useful for promoting a number of hydrocarbon hydroprocessing reactions, particularly hydrogenative desulfurization, dedemetallization and denitrogenation, and most particularyl, hydrodesulfurization of residuum-containing oils.Type: GrantFiled: June 29, 1988Date of Patent: December 12, 1989Assignee: Union Oil Company of CaliforniaInventor: Howard D. Simpson
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Patent number: 4871703Abstract: The invention is a method for preparing electrocatalytic oxides and applying them to substrates that cannot be heated to temperatures sufficiently high to convert electrocatalytic salts into electrocatalytic oxide comprising:(a) dissolving Ru salt(s) and Ni salt(s) in a solvent to form an electrocatalytic salt solution;(b) evaporating the solvent from the electrocatalytic salt solution, leaving a electrocatalytic salt residue;(c) heating the electrocatalytic salt residue in the presence of oxygen to a temperature and for a time sufficient to convert substantially all of the electrocatalytic salt into a electrocatalytic oxide; and(d) bonding the so-formed electrocatalytic oxide to a substrate that would be detrimentally affected if it were to be heated to 480.degree.-500.degree. C.Type: GrantFiled: December 17, 1987Date of Patent: October 3, 1989Assignee: The Dow Chemical CompanyInventors: Richard N. Beaver, Lloyd E. Alexander, Carl E. Byrd
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Patent number: 4866023Abstract: A process for producing shaped, agglomerated, particulate solids, by combining finely divided solids with a polymeric binder solution and curing the combination with polyvalent metal cations; and the products of such process.Type: GrantFiled: May 13, 1988Date of Patent: September 12, 1989Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Wolfgang Ritter, Hans-Peter Handwerk, Franz-Josef Carduck
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Patent number: 4861746Abstract: A catalyst for hydrotreating a heavy hydrocarbon oil which comprises a porous refractory inorganic oxide carrier component and at least one hydrogenating active metal component selected from nickel, cobalt and the like, the metal component concentration in the cross-section of the catalyst being the highest between the center of the cross-section and the periphery thereof.Type: GrantFiled: January 27, 1988Date of Patent: August 29, 1989Assignees: Nippon Oil Co., Ltd., Petroleum Energy Center FoundationInventors: Yasuyuki Oishi, Akira Inoue
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Patent number: 4834865Abstract: Disclosed is a hydrocracking process employing a plurality of reaction zones wherein at least one reaction zone contains a small nominal size hydrocracking catalyst (10 to 16 U.S. Sieve mesh size) and wherein the catalyst situated upstream of the small nominal size hydrocracking has a particle size greater than the small nominal size hydrocracking catalyst.Type: GrantFiled: February 26, 1988Date of Patent: May 30, 1989Assignee: Amoco CorporationInventors: Simon G. Kukes, Jeffrey T. Miller, L. C. Gutberlet, Jeffrey C. Kelterborn
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Patent number: 4824482Abstract: Diffusion aluminizing, when applied to titanium is effected with little or no activator to produce more uniform case and less etching.Workpieces are very rapidly pack-diffusion coated by using an excess of energizers in the pack, heating the retort containing the packed workpieces at a rate that brings the workpieces to diffusion-coating temperature and then completing the diffusion coating, all in less than 50 minutes, then cooling the retort.Diffusion aluminizing can also be applied to foils and powder to make pyrophoric product after leaching out much of the introduced aluminum. Powder can also be diffusion boronized. Pyrophoric boron-containing iron or nickel powder mixed with Ba(NO.sub.3).sub.2 will ignite to cause generation of large quantity of NO.sub.2 gas, and generation is improved when powdered boron and/or an oxidizer like NaClO.sub.3 is added.Type: GrantFiled: March 4, 1985Date of Patent: April 25, 1989Assignee: Alloy Surfaces Company, Inc.Inventor: Alfonso L. Baldi
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Patent number: 4797196Abstract: Disclosed is a hydrocracking process wherein the feedstock is first contacted with a first catalyst containing a nickel component and a tungsten component supported on a support containing alumina and a crystalline molecular sieve followed by subsequent contact with a second hydrocracking catalyst containing a cobalt component and a molybdenum component supported on a support containing silica-alumina and a crystalline molecular sieve and the first catalyst. This subsequent contact with the second and first catalysts is carried out either serially or in one step wherein the first and second catalysts are physically mixed.Type: GrantFiled: February 26, 1988Date of Patent: January 10, 1989Assignee: Amoco CorporationInventors: Simon G. Kukes, L. Charles Gutberlet, Albert L. Hensley, Jr.
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Patent number: 4797195Abstract: Disclosed is a hydrocracking process wherein the feedstock is contacted in a first reaction zone with a first reaction zone catalyst comprising a nickel component and a molybdenum component deposed on a support consisting essentially of a refractory inorganic oxide. The effluent from the first reaction zone is then contacted in a second reaction zone with a second reaction zone catalyst comprising a nickel component and a tungsten component deposed on a support component consisting essentially of an alumina component and a crystalline molecular sieve component. The effluent from the second reaction zone effluent is then contacted in a third reaction zone with a third reaction zone catalyst comprising a cobalt component and a molybdenum component deposed on a support component comprising a silica-alumina component and a crystalline molecular sieve component.Type: GrantFiled: February 26, 1988Date of Patent: January 10, 1989Assignee: Amoco CorporationInventors: Simon G. Kukes, L. Charles Gutberlet, Jeffrey T. Miller
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Patent number: 4760045Abstract: The present invention provides a catalyst for hydrotreatment of heavy oils in which at least one active metal component for hydrogenation selected from the Groups Vb, VIb and VIII of the periodic table is supported in a porous refractory carrier, the catalyst being characterized in that a distribution of the metal concentrative in each catalyst satisfies the relation of Cr.sub.1 <Cr.sub.2 in the case of R.sub.1 >R.sub.2 in the sectional surface of said catalyst, and a method for preparing the catalyst.Type: GrantFiled: June 3, 1986Date of Patent: July 26, 1988Assignee: Nippon Oil Co., Ltd.Inventors: Yasuyuki Oishi, Ken Kawakatsu, Akira Inoue
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Patent number: 4758546Abstract: Catalysts containing one of the metals iron, cobalt or nickel or a mixture of these are prepared by reduction of the particular catalyst intermediate with hydrogen at from 80.degree. to 260.degree. C. and under from 1 to 300 bar, in the liquid phase and in the presence of a redox system, and are used in the hydrogenation and amination of organic compounds.Type: GrantFiled: July 2, 1986Date of Patent: July 19, 1988Assignee: BASF AktiengesellschaftInventors: Karl Baer, Wolfgang Reiss, Juergen Schossig, Herbert Toussaint
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Patent number: 4749675Abstract: The present invention relates to a catalyst for the selective dimerization of ethylene or of propylene into monoolefines of the type based on nickel on a silica support whose active sites are complexes of the Ni.sup.+ ion. This catalyst is characterized in that practically the whole of the nickel is present in the form of Ni.sup.+ complexes co-ordinated with the oxygen of the surface of the silica support and whose co-ordination sphere comprises one or two trialkylphosphine ligands. The invention also relates to a process for the preparation of these catalysts and to a process of dimerization employing them.Type: GrantFiled: June 27, 1986Date of Patent: June 7, 1988Assignee: Centre National de la Recherche Scientifique (CNRS)Inventors: Daniele Olivier, Feng X. Cai, Christine Lepetit, Maggy Kermarec
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Patent number: 4746641Abstract: Disclosed is a process for ammoxidation of paraffins containing 2-5 C atoms over a vanadium-antimony oxide catalyst, the catalyst, and a precursor slurry for making such catalyst.Type: GrantFiled: April 17, 1985Date of Patent: May 24, 1988Assignee: Standard Oil CompanyInventors: Andrew T. Guttmann, Robert K. Grasselli, James F. Brazdil
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Patent number: 4729981Abstract: Catalyst for synthesis gas conversion in which a gas comprising carbon monoxide and hydrogen is converted to a liquid hydrocarbon is prepared by subjecting cobalt or nickel on a refractory metal oxide support to an activation procedure at a temperature of from about 100.degree. to about 450.degree. C. comprising, in sequence, (A) reduction in hydrogen, (B) oxidation in an oxygen-containing gas, and (C) reduction in hydrogen.Type: GrantFiled: June 2, 1986Date of Patent: March 8, 1988Assignee: Shell Internationale Research Maatschappij B.V.Inventors: Thaddeus P. Kobylinski, Charles L. Kibby, Richard B. Pannell, Elizabeth L. Eddy
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Patent number: 4708917Abstract: Molten carbonate fuel cell cathodes formed from a composition comprising oxides of nickel, lithium salts and barium salts having improved strength. These cathodes are fabricated by prefiring oxides of nickel and optionally lithium salts. The prefired powder is optionally leached with an organic acid and optional barium salts may be added. These powders are formed into an electrode and sintered. The resulting electrodes have improved strength.Type: GrantFiled: December 23, 1985Date of Patent: November 24, 1987Assignee: International Fuel Cells CorporationInventors: Thomas E. Swarr, John C. Trocciola
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Patent number: 4673663Abstract: A catalyst support and process for preparing same are provided wherein a metal substrate is coated with a layer of adherent alumina with a layer of chromium interposed between the alumina catalyst support and the metal substrate. The catalyst supports of the invention are especially useful in catalytic converters for the purification and control of exhaust gas emissions from internal combustion engines by the active catalyst oxidation/reduction of carbon monoxide, unburned hydrocarbons and nitrogen oxides.Type: GrantFiled: March 19, 1984Date of Patent: June 16, 1987Assignee: Rhone-Poulenc Specialites ChimiquesInventor: Claude Magnier
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Patent number: 4670416Abstract: A hydrogenation catalyst is disclosed, said catalyst consisting essentially of 10-90 parts by weight of nickel and 90-10 parts by weight of silica and having an overall active nickel surface area of 70-200 m.sup.2 /g. A two-step process for preparing the catalyst is also disclosed.Type: GrantFiled: January 4, 1984Date of Patent: June 2, 1987Assignee: Internationale Octrooi Maatschappij"Octropa"B.V.Inventors: Helmut Klimmek, Gunter Klauenberg
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Patent number: 4661468Abstract: A catalyst for cleaning exhaust fumes is disclosed, comprised of a catalyst ingredient of a base metal hyperfine powder of iron, nickel, or the like produced by the vaporization in gas, or their mixture, and a ceramic catalyst carrier of .gamma. (gamma) - alumina, titanium oxide, or the like, the catalyst ingredient being set on a ceramic catalyst carrier. This catalyst has high activity and the ability to remain stable over a long period of time. Furthermore, this catalyst has a new effect provided by hyperfining of particles, and a new physical or chemical characteristic indicated as a result of mixing them.Type: GrantFiled: September 11, 1985Date of Patent: April 28, 1987Assignee: CPUS CorporationInventors: Byong G. Lee, Ju M. Song, Chi S. Kim
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Patent number: 4615920Abstract: Workpieces are very rapidly pack diffusion coated by using an excess of energizers in the pack, heating the retort containing the packed workpieces at a rate that brings the workpieces to diffusion-coating temperature and then completing the diffusion coating, all in less than 50 minutes, then cooling the retort. Workpiece can have top coating layer of aluminum flake covered by a layer of extremely fine alumina or silica in a magnesium chromate binder, to provide surface having roughness at least about 10 micro-inches smoother than before the top coating. More active diffusion coated products are also produced.Type: GrantFiled: April 25, 1983Date of Patent: October 7, 1986Assignee: Alloy Surfaces Company, Inc.Inventor: Alfonso L. Baldi
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Patent number: 4591429Abstract: Supported, hydroprocessing catalysts comprising a sulfide of (i) trivalent chromium, (ii) Mo, W or mixture thereof and (iii) at least one metal selected from the group consisting of Ni, Co, Mn, Cu, Zn and mixture thereof and mixture thereof with Fe. These catalysts are made by compositing a preselected quantity of support material with a precursor comprising a mixture of (i) hydrated oxide of trivalent chromium and (ii) a salt containing a thiometallate anion of Mo or W and a cation comprising at least one divalent promoter metal chelated by at least one, neutral, nitrogen-containing polydentate ligand and heating the composite in the presence of sulfur and hydrogen in an oxygen-free atmosphere. These catalysts have been found to be useful hydrotreating catalysts having nitrogen removal activity superior to that of commercial catalysts such as sulfided cobalt-molybdate on alumina.Type: GrantFiled: September 28, 1984Date of Patent: May 27, 1986Assignee: Exxon Research and Engineering Co.Inventors: Teh C. Ho, Archie R. Young, II, Russell R. Chianelli, Allan J. Jacobson
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Patent number: RE34706Abstract: The title compounds can be prepared by reaction of a styrene derivative with ethylene in the presence of a nickel catalyst which carries a phosphorus-oxygen chelate ligand, at a temperature of 20.degree. to 160.degree. C. and an ethylene pressure of 1 to 200 bar. Styrene derivatives extended with ethylene, of the formula ##STR1## in which R.sup.19 denotes hydrogen, C.sub.1 -C.sub.4 -alkyl, vinyl or chlorine and R.sup.38 denotes C.sub.1 -C.sub.4 -alkenyl, C.sub.2 -C.sub.7 -acyl, flourine, chlorine or bromine andm assumes values of 4-104,with the exception of compounds wherein R.sup.19 denotes hydrogen and R.sup.38 denotes i-butyl or benzoyl, and m assumes the value 4, are new.Type: GrantFiled: June 29, 1993Date of Patent: August 23, 1994Assignee: Bayer AktiengesellschaftInventor: Karl-Heinz A. O. Starzewski