Of Group Vi (i.e., Cr, Mo, W Or Po) Patents (Class 502/254)
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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: 4853357Abstract: The additional of redox-active metal components and ligands, alternatively or simultaneously, results in increased conversion and selectivity in the palladium-catalyzed oxidation of olefins to carbonyl products in the presence of polyoxoanions. In preferred modes, heteropolyoxoanions and Isopolyoxoanions containing tungsten, molybdenum and vanadium, individually or in combination, are described. The use of copper as the redox-active metal component shows reduced allylic reactivity. The elimination of chloride from the catalyst system provides substantial engineering advantages over the prior art, particularly, the reduction of corrosion and chloro-organic by-product formation. The use of redox-active metal components and/or ligands makes the palladium-polyoxoanion catalyst system industrially practicable.Type: GrantFiled: September 30, 1987Date of Patent: August 1, 1989Assignee: Catalytica AssociatesInventors: Janis Vasilevskis, Jacques C. De Deken, Robert J. Saxton, Paul R. Wentrcek, Jere D. Fellmann, Lyubov S. Kipnis
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Patent number: 4831007Abstract: Useful cracking catalysts and catalyst supports comprising a mixture of tungsten oxide and silica supported on a boehmite-like surface which, in turn, is supported on alumina are prepared by forming a composite of particles of (a) tungsten oxide, (b) silica and (c) boehmite and subjecting the composite to steaming at a temperature of at least about 500.degree. C. During the steaming, the tungsten oxide and silica react with the surface of the boehmite as the boehmite converts to alumina.Type: GrantFiled: December 31, 1985Date of Patent: May 16, 1989Assignee: Exxon Research and Engineering CompanyInventors: Lawrence L. Murrell, Nicholas C. Dispenziere, Jr.
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Patent number: 4829040Abstract: Mild hydrocracking is accomplished with a catalyst containing an intermediate pore molecular sieve, such as silicalite or a ZSM-5 type zeolite.Type: GrantFiled: June 19, 1987Date of Patent: May 9, 1989Assignee: Union Oil Company of CaliforniaInventor: John W. Ward
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Patent number: 4816434Abstract: Catalytic materials are modified by adding one or more electropositive and/or electronegative elements thereto in amounts sufficient to adjust the resultant geometric mean electronegativity to a value within a desired or predetermined range. The invention is particularly suited to the preparation of hydrocarbon hydroprocessing catalysts, particularly with respect to hydrodesulfurization catalysts comprising a support material containing a porous refractory oxide. With such catalysts, not only is the geometric mean electronegativity adjusted to a desired value, but if the electropositive or electronegative element added to the catalyst has pore growth promotion properties, the average pore size of the resultant catalyst is increased while its surface area, and usually also its total pore volume, is decreased.Type: GrantFiled: February 19, 1982Date of Patent: March 28, 1989Assignee: Union Oil Company of CaliforniaInventor: Howard D. Simpson
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Patent number: 4810363Abstract: Hydrocarbon oils of which more than about 70% by volume boils above about 360.degree. C. and which have a C.sub.5 -asphaltenes content of more than about 2.5% by weight are contacted at elevated temperature and pressure in the presence of hydrogen with a supported molybdenum containing catalyst, in which process hydrocarbon oils containing substantial amounts of nickel are converted at a pressure of at least about 80 bar, using a supported molybdenum containing catalyst having an average pore diameter in the range of about 30 to about 80 nm.Type: GrantFiled: January 6, 1988Date of Patent: March 7, 1989Assignee: Shell Oil CompanyInventor: Franciscus G. A. Van Den Berg
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Patent number: 4749671Abstract: An exhaust gas cleaning catalyst composed of a refractory three-dimensional structure and a catalytically active substance supported thereon. That surface or part of the catalyst which makes contact with an exhaust gas is formed of numerous irregularly arranged protrusions composed of a refractory inorganic powder having a particle diameter of 5 to 300 micrometers or a mixture of it with refractory inorganic fibers and the catalytically active substance supported on the protrusions.Type: GrantFiled: July 1, 1986Date of Patent: June 7, 1988Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Koichi Saito, Kenji Ueda, Yasuo Ikeda
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Patent number: 4729980Abstract: An improved catalyst for use in the hydrodemetallization and hydroconversion of heavy hydrocarbon feedstocks and method of making same and, more particularly, an improved catalyst having two distinct phases supported on a refractory support wherein the first phase effectively stores metals removed from the feestock and the second phase exhibits superior catalytic activity for hydrogenation when processing heavy hydrocarbon feedstocks.Type: GrantFiled: April 27, 1987Date of Patent: March 8, 1988Assignee: Intevep, S.A.Inventors: M. M. Ramirez de Agudelo, C. E. Galarraga
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Patent number: 4725572Abstract: A process for preparing a catalyst for removing nitrogen oxides which comprises sintering orthotitanic acid in coexistence of at least one compound, selected from silicic acid in the form of fine particles, tungsten compounds and molybdenum compounds.Type: GrantFiled: August 19, 1986Date of Patent: February 16, 1988Assignee: Mitsubishi Jukogyo Kabushiki KaishaInventors: Toshikuni Sera, Shigeaki Mitsuoka, Touru Seto, Kozo Iida, Hiroshi Suzumura, Yoshiaki Obayashi
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Patent number: 4721696Abstract: A composition of matter comprising alumina as the major component and silica as a minor component is prepared by a process comprising sequential addition of solutions of aluminum salt and alkali metal aluminate, addition of a solution of alkali metal silicate to dispersed alumina hydrogen and heating formed alumina-silica hydrogel under dehydrating conditions. The thus prepared composition of matter, optionally promoted with at least one transition metal compound, can be used as a catalyst for hydrotreating substantially liquid hydrocarbon-containing feed streams which also contain sulfur and metal compounds as impurities.Type: GrantFiled: March 11, 1987Date of Patent: January 26, 1988Assignee: Phillips Petroleum CompanyInventor: Dennis R. Kidd
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Patent number: 4720477Abstract: An H-Coal Process hydrogenation operation and catalyst life is substantially improved when using colloidal particles of catalyst comprising a colloidal matrix of silica, alumina, titania and combinations thereof coated with hydrogenating components selected from cobalt, molybdenum, nickel, tungsten and combinations thereof. The colloidal catalyst activity may be altered by alkaline promoters, other metals and acidic promoters.Type: GrantFiled: July 23, 1986Date of Patent: January 19, 1988Assignee: Ashland Oil, Inc.Inventor: William P. Hettinger, Jr.
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Patent number: 4720474Abstract: The addition of redox-active metal components and ligands, alternatively or simultaneously, results in increased conversion and selectivity in the palladium-catalyzed oxidation of olefins to carbonyl products in the presence of polyoxoanions. In preferred modes, heteropolyoxoanions and isopolyoxoanions containing tungsten, molybdenum and vanadium, individually or in combination, are described. The use of copper as the redox-active metal component shows reduced allylic reactivity. The elimination of chloride from the catalyst system provides substantial engineering advantages over the prior art, particularly, the reduction of corrosion and chloro-organic by-product formation. The use of redox-active metal components and/or ligands makes the palladium-polyoxoanion catalyst system industrially practicable.Type: GrantFiled: September 24, 1985Date of Patent: January 19, 1988Assignee: Catalytica AssociatesInventors: Janis Vasilevskis, Jacques C. De Deken, Robert J. Saxton, Paul R. Wentrcek, Jere D. Fellmann, Lyubov S. Kipnis
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Patent number: 4701435Abstract: A method for producing a catalyst for use in the hydrotreatment, hydrodemetallization and hydrocracking of heavy hydrocarbon feedstocks containing high metal levels of vanadium, nickel and sulfur comprises the steps of preparing a carrier from a naturally occurring material consisting essentially of magnesium silicate having a sheet-type structure, iron and nickel wherein the carrier is prepared directly from the above naturally occurring material or, in the alternative, it can be prepared from the naturally occurring material in combination with a catalyst component. In the event the carrier for the catalyst is prepared from the above naturally occurring material without the addition of the catalyst component, the carrier can be impregnated with the catalyst component. The resultant catalyst is particularly useful in the treatment of heavy hydrocarbon feedstocks.Type: GrantFiled: April 7, 1986Date of Patent: October 20, 1987Assignee: Intevep, S.A.Inventors: Juan J. Garcia, Roberto E. Galiasso, Magdalena M. Ramirez de Agudelo, Luis Rivas, Juan Hurtado
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Patent number: 4692428Abstract: Useful cracking catalysts and catalyst supports comprising mixtures of tungsten oxide and silica supported on alumina are prepared by forming a composite of a mixture of (a) particles of tungsten oxide or one or more suitable tungsten oxide precursors, (b) particles of silica and (c) particles of porous alumina and steaming said composite at a temperature of at least about 500.degree. C. in a non-reducing environment for a time sufficient for at least a portion of the tungsten oxide and silica to disperse over the alumina surface. The mixture of silica and tungsten oxide wets, spreads out and reacts with the surface hydroxyl groups of the alumina.Type: GrantFiled: December 31, 1985Date of Patent: September 8, 1987Assignee: Exxon Research and Engineering CompanyInventors: Lawrence L. Murrell, Nicholas C. Dispenziere, Jr., Richard S. Polizzotti
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Patent number: 4663304Abstract: A process for the disproportionation of olefins is disclosed employing a novel catalyst comprising an inorganic oxide support contacted with at least one of tungsten or molybdenum oxide or oxide precursor and at least one acid. Method for preparation of catalyst is also provided.Type: GrantFiled: September 27, 1985Date of Patent: May 5, 1987Assignee: Phillips Petroleum CompanyInventors: Charles A. Drake, Robert E. Reusser
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Patent number: 4640908Abstract: An improved oxidation catalyst, well adopted for the conversion of H.sub.2 S-containing acid gases at least in part to elemental sulfur, is facilely prepared by (i) hydrothermally treating at least a portion of an active alumina support, and (ii) then impregnating said at least partially hydrothermally treated support with a catalytically effective amount of a catalytically active oxide phase which comprises the oxides of at least one of the metals, Fe, Cu, Ag, W, Co, Ni, Bi, Cr and Cd, with the proviso (iii) that at least one rare earth oxide, alkaline earth metal oxide, zirconium oxide or silica compound, or any precursor compound thereof, is incorporated into the catalyst during either of the steps (i) or (ii).Type: GrantFiled: September 23, 1985Date of Patent: February 3, 1987Assignee: Rhone-Poulenc Specialites ChimiquesInventor: Thierry Dupin
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Patent number: 4624939Abstract: Improved processes for the conversion to oximes by selective oxidation, in the vapor phase, of saturated primary aliphatic or alicyclic amines having 2 to 12 carbon atoms especially cyclohexylamine to cyclohexanone oxime with elemental oxygen, in a reaction zone, in the presence of an effective amount of a catalyst comprising an oxygen-containing tungsten compound and alumina by (1) periodically regenerating the oxygen-containing tungsten catalyst by heating same at about 250.degree. C.-300.degree. C. in the presence of elemental oxygen, or (2) maintaining the temperature of the oxygen-containing tungsten catalyst in a range of about 100.degree. C.-145.degree. C. or (3) employing higher mol fractions of oxygen and of amine in a range of about 0.2-0.4 in the vapor phase are disclosed. An improved method of preparing an oxygen-containing tungsten on an alumina catalyst is also disclosed.Type: GrantFiled: September 27, 1985Date of Patent: November 25, 1986Assignee: Allied CorporationInventors: Jean Yamanis, Emery J. Carlson, John N. Armor
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Patent number: 4596786Abstract: Olefins are converted into other olefins having different numbers of carbon atoms by contact with a catalyst comprising a silica support containing tungsten oxide and a promoting amount of a least one titaniferous agent and activated under conditions suitable for the titaniferous agent to promote the activity of tungsten oxide and silica for the disproportionation and isomerization reaction.Type: GrantFiled: March 12, 1985Date of Patent: June 24, 1986Assignee: Phillips Petroleum CompanyInventors: Simon Kukes, Robert L. Banks
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Patent number: 4590177Abstract: Disclosed is a method for preparing dual colloid catalyst compositions wherein a gel, or colloidal suspension is formed by admixing (a) a 0.6 to 10M aqueous solution containing one or more soluble salts or complexes of one or more transition metals, wherein at least one of the transition metals is reducible and hydrolyzable, and one or more elements selected from Cr, Al, Si, Th, U, the lanthanides, and elements from Groups IA and IIA of the Periodic Table of the Elements, with (b) a 0.5 to 10N aqueous base solution. The solid material is separated from the resulting gel, or colloidal suspension and washed and dried.Type: GrantFiled: August 10, 1984Date of Patent: May 20, 1986Assignee: Exxon Research and Engineering Co.Inventors: Michael A. Richard, Thomas H. Vanderspurt, Angelo A. Montagna
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Patent number: 4588705Abstract: Disclosed is a method for preparing dual colloid catalyst compositions which are suitable for use in such processes as ammonia synthesis, carbon monoxide hydrogenation, hydrogenation and denitrogenation. The method comprises forming a gel, or suspension, by admixing: (i) one or more transition metal cyano-containing anionic-complex solutions wherein at least one solution contains a reducible transition metal, and wherein one or more of these solutions optionally contains a nonreducible metal, with (ii) one or more solutions containing polyovalent metal cations. The resulting gel, or suspension is heated at a temperature of about 90.degree. C. to about 150.degree. C. for an effective amount of time to allow hydrolysis and polymerization to occur. The resulting solid is then separated and dried.Type: GrantFiled: August 10, 1984Date of Patent: May 13, 1986Assignee: Exxon Research and Engineering Co.Inventors: Thomas H. Vanderspurt, Michael A. Richard
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Patent number: 4581343Abstract: A pollution control catalyst for a catalytic converter in the exhaust system of an internal combustion engine, which catalyst comprises a support impregnated with (i) at least one platinum group precious metal, and with (ii) cerium base metal, or a combination of cerium and at least one other base metal, is facilely prepared by (1) impregnating a catalyst support with precursor compounds of said cerium base metal, or of said cerium base metal and of at least one other base metal, (2) activating said impregnated support, under a neutral or oxidizing atmosphere, at a temperature ranging from 120.degree. to 800.degree. C.Type: GrantFiled: May 15, 1984Date of Patent: April 8, 1986Assignee: Pro-CatalyseInventors: Gilbert Blanchard, Jean-Pierre Brunelle, Richard Doziere, Emmanuel Goldenberg, Michel Prigent
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Patent number: 4537875Abstract: Alumina, silica or silica-alumina containing catalysts are manufactured by incorporating at least one active element selected from the metals of the groups V, VI and VIII or their compounds to a carrier, and then drying and activating. The carrier or the catalyst is shaped into extrudates and the latter are crushed to coarse particles.Type: GrantFiled: December 27, 1983Date of Patent: August 27, 1985Assignee: Societe Francaise des Produits pour Catalyse Pro-CatalyseInventors: Herve Toulhoat, Jean-Claude Plumail, Marc Mercier, Yves Jacquin
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Patent number: 4522936Abstract: A supported tungsten oxide or supported molybdenum oxide is treated with elemental tungsten, silicon or antimony. The composition is useful as a metathesis catalyst.Type: GrantFiled: May 18, 1984Date of Patent: June 11, 1985Assignee: Phillips Petroleum CompanyInventors: Simon G. Kukes, Robert L. Banks
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Patent number: 4520124Abstract: A method is provided for producing a catalytic structure in the form of sheet or honeycomb for the gas phase reduction of nitrogen oxides. The method comprises: beating an inorganic fiber in water to form a slurry; forming the slurry into a sheet by paper-making means and drying the sheet; impregnating the sheet or a honeycomb structure manufactured therefrom which has a porosity of 60-85% with an impregnating slurry which contains titanium dioxide or its precursor in a concentration at least of 100 g/l and has a viscosity of 5-250 cps. at normal temperatures, drying, and when necessary calcining the structure; and then immersing the structure in a solution containing a catalytically active agent or its precursor, drying and calcining the structure, thereby to provide a porous catalytic structure having titanium dioxide and the catalytically active agent substantially uniformly dispersed and supported therein.Type: GrantFiled: September 12, 1983Date of Patent: May 28, 1985Assignee: Sakai Chemical Industry Co., Ltd.Inventors: Kazunobu Abe, Tadao Nakatsuji
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Patent number: 4518709Abstract: A coal liquefaction hydrotreating catalyst composition comprising particles of Component A consisting essentially of at least one Group VIB metal component supported on refractory inorganic oxide and particles of Component B consisting essentially of either cobalt and/or nickel component supported on a refractory inorganic oxide.Type: GrantFiled: April 5, 1982Date of Patent: May 21, 1985Assignee: Standard Oil Company (Indiana)Inventor: Regis J. Pellet
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Patent number: 4514519Abstract: A catalyst containing tungsten, an alkali or alkaline earth component, and iron on a support, preferably silica gel, is disclosed which is useful in reverse disproportionation of stilbene and ethylene to produce styrene.Type: GrantFiled: January 16, 1984Date of Patent: April 30, 1985Assignee: Monsanto CompanyInventor: Charles F. Hobbs
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Patent number: 4513099Abstract: Olefins are converted into other olefins having different numbers of carbon atoms by contact with a catalyst produced by combining a metal, such as tungsten or a tungsten compound, with a halosilane by adding either water or silica to the suspension of metal and halosilane and then heating to activate the catalyst.Type: GrantFiled: February 27, 1984Date of Patent: April 23, 1985Assignee: Phillips Petroleum CompanyInventors: Simon G. Kukes, Robert L. Banks
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Patent number: 4513090Abstract: A catalyst is provided which comprises a crystalline silica zeolite, a hydrogenation component and a support. The catalyst may be a physical mixture of the zeolite and the supported hydrogenation component or a composite catalyst. Hydrocarbon hydroprocessing processes such as hydroconversion and hydrodesulfurization utilizing the catalyst are also provided. The catalyst is particularly suited for the simultaneous pour point reduction and hydrodesulfurization of hydrocarbonaceous oils.Type: GrantFiled: July 9, 1981Date of Patent: April 23, 1985Assignee: Exxon Research and Engineering Co.Inventors: Paul E. Eberly, Jr., William E. Winter, Jr.
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Patent number: 4511672Abstract: A catalyst containing tungsten, potassium, and bismuth on a support, preferably silica gel, is disclosed which is useful in reverse disproportionation of stilbene and ethylene to produce styrene.Type: GrantFiled: January 16, 1984Date of Patent: April 16, 1985Assignee: Monsanto CompanyInventor: Charles F. Hobbs
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Patent number: 4504589Abstract: Hydroconversion catalysts containing Group VIII and/or Group VIB catalytically active metals on a support, and particularly those containing nickel and molybdenum on alumina, are improved in hydrodenitrification (HDN) activity by impregnation of additional molybdenum and/or tungsten carbonyls onto the catalyst by sublimation. Preferably from about 1 to 5% w molybdenum is added. The carbonyl impregnated catalyst is then dried, calcined and, generally sulfided before use in a hydrocarbon conversion process.Type: GrantFiled: March 26, 1984Date of Patent: March 12, 1985Assignee: Shell Oil CompanyInventor: Robert C. Ryan
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Patent number: 4504681Abstract: A process for the production of oximes which comprises contacting, in the vapor phase, a primary saturated aliphatic or alicyclic amine of 2 to 12 carbon atoms with an elemental oxygen gas in the presence of an effective amount of a catalyst comprising an alumina or oxygen-containing tungsten substance on a metal oxide support using temperatures between about 130.degree. and 230.degree. C. at atmospheric pressure is disclosed. Preferred alumina catalysts are alumina xerogels, .gamma.-alumina and acidic, fluorinated alumina. Preferred oxygen-containing tungsten catalysts are WO.sub.3 on .gamma.-alumina or WO.sub.3 on alumina xerogels.Type: GrantFiled: December 20, 1982Date of Patent: March 12, 1985Assignee: Allied CorporationInventor: John N. Armor
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Patent number: 4500650Abstract: This invention relates to a three-way catalyst for use in the purification of exhaust gas from an internal combustion engine, a method of making the same and an exhaust system including a three-way catalyst for an internal combustion engine. Specifically, the three-way catalyst comprises a substrate suitable for the purification of exhaust gas from an internal combustion engine wherein the catalyst comprises a substrate, a refractory oxide layer, tungsten and/or one or more tungsten containing compounds and one or more platinum group metals.Type: GrantFiled: January 18, 1982Date of Patent: February 19, 1985Assignee: Johnson Matthey Public Limited CompanyInventors: Michael Wyatt, Gary M. Leach, Ashley M. Gould
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Patent number: 4499203Abstract: A catalyst for use in the hydrotreatment of hydrocarbons comprises a carrier and at least one catalytic metal selected from vanadium, molybdenum, tungsten, nickel, cobalt and/or iron; this catalyst is in the form of a plurality of juxtaposed agglomerates of acicular platelets, oriented radially to each other. It is prepared from agglomerates of activated alumina subjected to reaction with an acid and a compound providing an anion able to combine with aluminum ions in solution.Type: GrantFiled: June 17, 1983Date of Patent: February 12, 1985Assignee: Societe Francaise des Produits pour Catalyse Pro-CatalyseInventors: Herve Toulhoat, Yves Jacquin, Thierry Dupin
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Patent number: 4499328Abstract: Olefins are converted into other olefins having different numbers of carbon atoms by contact with a catalyst comprising silica containing tungsten oxide and a promoting amount of silver under conditions suitable for silver to promote the activity of tungsten oxide for the disproportionation reaction.Type: GrantFiled: October 5, 1983Date of Patent: February 12, 1985Assignee: Phillips Petroleum CompanyInventors: Simon G. Kukes, Robert L. Banks
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Patent number: 4490478Abstract: An improved olefin disproportionation catalyst produced by contacting an inorganic refractory oxide containing a catalytic amount of tungsten oxide or molybdenum oxide with a promoting amount of at least one elemental metal selected from zinc and manganese.Type: GrantFiled: July 29, 1983Date of Patent: December 25, 1984Assignee: Phillips Petroleum CompanyInventors: Robert L. Banks, Simon G. Kukes
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Patent number: 4490477Abstract: A catalyst containing tungsten, iridium, and an alkali or alkaline earth component, preferably potassium, on a support, preferably silica gel, is disclosed which is useful in reverse disproportionation of stilbene and ethylene to produce styrene.Type: GrantFiled: January 16, 1984Date of Patent: December 25, 1984Assignee: Monsanto CompanyInventor: Charles F. Hobbs
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Patent number: 4487849Abstract: A catalyst containing tungsten, copper, and an alkali or alkaline earth component on a support, preferably silica gel, is disclosed which is useful in reverse disproportionation of stilbene and ethylene to produce styrene.Type: GrantFiled: January 16, 1984Date of Patent: December 11, 1984Assignee: Monsanto CompanyInventor: Charles F. Hobbs
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Patent number: 4483942Abstract: A process for the production of hydrogenation catalysts is disclosed which is characterized by the use of citric acid or malic acid as a stabilizer in a specified amount with respect to Group VI metal salts which are used in combination with Group VIII metal salts to produce an impregnating solution. The solution is impregnated with alumina or silica-alumina and calcined to form a catalyst.Type: GrantFiled: October 11, 1983Date of Patent: November 20, 1984Assignee: Nippon Oil Co., Ltd.Inventors: Yasuo Sekido, Akira Inoue, Masao Mori, Tatsuki Kubo
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Patent number: 4474897Abstract: A catalyst containing tungsten, lead, and an alkali or alkaline earth component on a support, preferably silica gel, is disclosed which is useful in reverse disproportionation of stilbene and ethylene to produce styrene.Type: GrantFiled: August 17, 1983Date of Patent: October 2, 1984Assignee: Monsanto CompanyInventor: Charles F. Hobbs
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Patent number: 4473705Abstract: A process for producing an oxalate diester is provided. The oxalate diester is produced by reacting an aliphatic alcohol, carbon monoxide and molecular oxygen at an elevated temperature and under pressure in the presence of a catalyst comprising (1) metallic palladium or a palladium compound, (2) a heteropoly-acid and (3) at least one nitrogen compound selected from the group consisting of nitric acid, nitrogen oxides and esters of nitrous acid.Type: GrantFiled: December 21, 1982Date of Patent: September 25, 1984Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Hiroshi Miyamori, Tadashi Simomura, Mituo Miura, Katsushige Hayashi
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Patent number: 4465789Abstract: Hydrotreating catalysts are made on supports having a core of alumina having predominantly micropore structure, surrounded by a rind of different alumina having at least 25% of total pore volume in macropores. The catalyst support material is impregnated with catalytic metals, e.g. molybdenum with cobalt or nickel or both. The rind captures metals removed from the oils being treated to prevent deactivation of the core by such metals.Type: GrantFiled: April 4, 1983Date of Patent: August 14, 1984Assignee: American Cyanamid CompanyInventor: John F. Lindsley
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Patent number: 4464481Abstract: A process is provided for the hydrocracking of a hydrocarbon charge stock which comprises reacting the charge stock with hydrogen at hydrocracking conversion conditions in contact with a catalytic composite comprising a combination of a Group VIB metal component, Group VIII metal component, and a fluorine component present in an amount ranging from 1 to 3 wt. %, on an elemental basis, based on the composite, with a silica-thoria carrier material wherein the carrier is cogelled silica-thoria consisting of from about 25% to about 99% by weight silica and from 1% to about 75% by weight thoria.A hydrocracking catalyst is also provided which comprises a combination of a nickel component, a tungsten component, and a fluorine component with a silica-thoria carrier material. The nickel, tungsten, and fluorine components are present in amounts sufficient to result in the composite containing, on an elemental basis, about 0.5 to about 2 wt. % of the nickel component, about 0.5 to about 14 wt.Type: GrantFiled: August 25, 1983Date of Patent: August 7, 1984Assignee: UOP Inc.Inventors: Lee Hilfman, Mark J. O'Hara
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Patent number: 4455390Abstract: A hydrocarbon conversion catalyst containing a Group VIB metal on a porous refractory oxide is prepared by impregnating support particles with a solution containing Group VIB metal components and citric acid, followed by drying and calcining. The catalyst is useful for promoting a number of hydrocarbon conversion reactions, particularly those involving hydrogenative desulfurization, demetallization and denitrogenation.Type: GrantFiled: August 19, 1982Date of Patent: June 19, 1984Assignee: Union Oil Company of CaliforniaInventors: Pauline B. Ting, Howard D. Simpson
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Patent number: 4435278Abstract: A process for hydroprocessing a hydrocarbonaceous feedstock containing constituents boiling above 350.degree. C. comprises contacting said feedstock with hydrogen under hydroprocessing conditions with a catalyst composition comprising a rigidly interconnected pack containing inorganic matrix oxide and about 10-95% fluid catalytic cracking catalyst microspheroids, based upon the total weight of said matrix oxide and said microspheroids, said pack characterized by a pore volume of at least 0.15 cc. per cc., at least about 30% of said pore volume present as pores having diameters within the range of 50-250 Angstroms and at least about 5% of said pore volume present as pores having diameters greater than 1,000 Angstroms.Type: GrantFiled: June 9, 1980Date of Patent: March 6, 1984Assignee: Chezon Research Co.Inventor: Hong C. Chen
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Patent number: 4428862Abstract: Waxy shale oil feeds containing organonitrogen and/or organosulfur components are contacted with a catalyst comprising a Group VIB metal component on a support containing silicalite and a porous refractory oxide under conditions of elevated temperature and pressure and in the presence of hydrogen so as to simultaneously reduce its pour point and its organosulfur and/or organonitrogen content.Type: GrantFiled: May 26, 1981Date of Patent: January 31, 1984Assignee: Union Oil Company of CaliforniaInventors: John W. Ward, Timothy L. Carlson
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Patent number: 4416800Abstract: A method is provided for producing a catalyst and a carrier therefor in the form of sheet or honeycomb. The method comprises: beating a heat-resistant fiber such as asbesto fiber in water to form a slurry; mixing the slurry with a catalytically active agent, a carrier material therefor and/or their precursors to fix such materials in the fiber, thus forming a stock; and forming the stock into a sheet and drying the same. The sheet thus obtained may be formed into a honeycomb structure with an improved adhesive.Type: GrantFiled: March 19, 1981Date of Patent: November 22, 1983Assignee: Sakai Chemical Industry Co., Ltd.Inventors: Kazunobu Abe, Tadao Nakatsuji
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Patent number: 4409131Abstract: For preparing supported catalysts containing cobalt or nickel and molybdenum, using single solution impregnation, stable solutions of cobalt or nickel complexed with carboxylic acids are compatible with ammonium molybdate and result is superior catalysts.Type: GrantFiled: February 22, 1982Date of Patent: October 11, 1983Assignee: MaineInventor: John A. Fetchin
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Patent number: 4409130Abstract: The invention relates to a process to improve the stability of a catalyst to be used for lowering the cloud or turbidity point and the filterability limit temperature of gas-oils.The catalyst is formed of a composite system constituting 5 to 90% of a hydrodesulfuration type catalyst A and 95 to 10% of a hydroconversion type catalyst B, these two catalysts being either mixed or superposed, in which case catalyst A forms the top of the catalytic bed.Type: GrantFiled: January 28, 1982Date of Patent: October 11, 1983Inventors: Jacques Bousquet, Claude Gueguen, Daniel Vautier