Patents Examined by Lance Johnson
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Patent number: 4637870Abstract: Hydroconversion processes for converting oil, coal or mixtures thereof are provided utilizing a catalyst prepared by first forming an aqueous solution of phosphomolybdic acid and phosphoric acid at a specified ratio of atoms of P/Mo, and subsequently adding this solution to a hydrocarbon material, followed by heating in the presence of H.sub.2 and/or H.sub.2 S to form a solid molybdenum and phosphorus-containing catalyst.Type: GrantFiled: October 10, 1985Date of Patent: January 20, 1987Assignee: Exxon Research and Engineering CompanyInventors: Roby Bearden, Jr., Clyde L. Aldridge
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Patent number: 4637871Abstract: Slurry hydroconversion processes utilizing an aqueous solution of phosphomolybdic acid as catalyst precursor, which is subsequently converted to a solid molybdenum-containing catalyst, are improved when the catalyst precursor aqueous solution comprises a specified concentration of molybdenum derived from the phosphomolybdic acid. The improved hydroconversion processes and the improved method of preparing the catalyst are provided.Type: GrantFiled: October 10, 1985Date of Patent: January 20, 1987Assignee: Exxon Research and Engineering CompanyInventors: Roby Bearden, Jr., Clyde L. Aldridge
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Patent number: 4636297Abstract: Specified sulfur compounds such as N,N-diethylthiourea, N,N-dibutylthiourea, tetramethylthiuram monosulfide, tetrabutylthiuram monosulfide, tetraethylthiuram disulfide, tetrabutylthiuram disulfide are supplied as a coking inhibitor for preventing coking in equipment used in hydrocarbon treatment processes wherein a hydrocarbon is treated at a temperature of from about 250.degree. C. to 950.degree. C. to produce petroleum products, petrochemical products and/or their intermediate products.Type: GrantFiled: August 12, 1985Date of Patent: January 13, 1987Assignee: Hakuto Chemical Co., Ltd.Inventors: Hiroshi Uchiyama, Yukinori Matsui
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Patent number: 4632811Abstract: A new crystalline silicophosphoaluminate designated MCM-3 and having a particular crystal structure is provided. This crystalline material has ion-exchange properties and is readily convertible to catalytically active material.Type: GrantFiled: December 21, 1984Date of Patent: December 30, 1986Assignee: Mobil Oil CorporationInventors: Eric G. Derouane, Roland von Ballmoos
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Patent number: 4629552Abstract: A method and apparatus for improving the flow of catalyst particles from a riser conversion zone to a separator in a fluidized catalytic cracking (FCC) unit. The exit of the riser conversion zone is equipped with a deflector mounted so as to redirect catalyst particle and gas suspension movement toward a separator inlet, thus preventing rebound back into the riser conversion zone. The catalyst deflector, in other embodiments, can be combined with one or more of a short contact time stripper, a stripper mount in or adjacent the exhaust barrel of a separator, and/or a catalyst seal pot, all serving to reduce "residence" time of hydrocarbons with catalyst particles.Type: GrantFiled: July 18, 1984Date of Patent: December 16, 1986Assignee: Mobil Oil CorporationInventors: James H. Haddad, Hartley Owen
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Patent number: 4628137Abstract: Para-ethyltoluene dehydrogenation catalyst compositions and processes for using such catalysts are provided. The catalyst compositions comprise a catalytically active iron compound, e.g., iron oxide; a potassium catalyst promoter, e.g., potassium carbonate; an optional chromium compound stabilizer, e.g., chromic oxide, and a magnesium compound, e.g., magnesium oxide. Utilization of particular amounts of magnesium compound in dehydrogenation catalyst compositions of this type will provide a catalyst especially suitable for promoting the selective dehydrogenation of para-ethyltoluene to form para-methylstyrene in improved yields.Type: GrantFiled: September 14, 1984Date of Patent: December 9, 1986Assignee: Mobil Oil CorporationInventor: Chin-Chiun Chu
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Patent number: 4628133Abstract: A two-step process is disclosed wherein C.sub.9.sup.+ hydrocarbons are prepared from C.sub.4.sup.- hydrocarbons by steam reforming followed by Fischer-Tropsch synthesis over a special cobalt-containing catalyst. Yields of C.sub.9.sup.+ hydrocarbons are increased by recycling a gaseous fraction comprising unconverted H.sub.2 and CO as well as C.sub.8.sup.- hydrocarbon by-products and steam to the steam reformer.Type: GrantFiled: September 23, 1985Date of Patent: December 9, 1986Assignee: Shell Oil CompanyInventors: Johannes K. Minderhoud, Martin F. M. Post, Swan T. Sie, Ernst J. R. Sudholter
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Patent number: 4627968Abstract: In the synthesis of a crystalline aluminosilicate by heating an aqueous mixture containing a silica source, an alumina source and an alkali metal source, at least one compound selected from lower alkylureas and lower alkylthioureas is permitted to co-exist with the mixture.Type: GrantFiled: September 10, 1985Date of Patent: December 9, 1986Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventor: Tadashi Kai
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Patent number: 4623527Abstract: A new crystalline silicophosphoaluminate molecular sieve designated MCM-10 and having a particular crystal structure is provided. This crystalline material has ion-exchange properties and is readily convertible to catalytically active material.Type: GrantFiled: December 21, 1984Date of Patent: November 18, 1986Assignee: Mobil Oil CorporationInventors: Eric G. Derouane, Ernest W. Valyocsik, Roland von Ballmoos
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Patent number: 4623529Abstract: The present invention is directed to the preparation of a synthetic crystalline zeolite of the clinoptilolite type wherein a solid amorphous silica, an alumina source, sodium hydroxide, a seed clinoptilolite and water are mixed together, heated, refluxed, then filtered and a synthetic crystalline zeolite of the clinoptilolite type obtained.Type: GrantFiled: September 16, 1985Date of Patent: November 18, 1986Assignee: Ethyl CorporationInventors: Robert N. Sanders, Sebastian M. Laurent
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Patent number: 4621162Abstract: Compositions of matter comprise oxides of silicon, aluminum and/or titanium mixed with combinations of manganese oxide and magnesium oxide; iron oxide and magnesium oxide; calcium, strontium, barium, tin and/or antimony oxides, manganese oxide and magnesium oxide; and iron oxide, manganese oxide and magnesium oxide. These compositions are particularly useful as catalysts for selectively converting propane and butanes to ethylene and ethane and particularly to ethylene. A method for converting propane and butanes to less saturated hydrocarbons is also disclosed in which the catalyst life is extended and the selectivity to ethylene and ethane, particularly ethylene, is improved by carrying out the contacting with the catalyst in the presence of steam, when the catalyst contains an oxide of iron and, optionally, when the catalyst does not contain an oxide of iron.Type: GrantFiled: July 25, 1985Date of Patent: November 4, 1986Assignee: Phillips Petroleum CompanyInventors: Gary A. Delzer, John H. Kolts
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Patent number: 4621163Abstract: A method for the conversion of C.sub.3 and C.sub.4 hydrocarbons to less saturated hydrocarbons, such as ethylene and propylene and particularly ethylene, includes contacting the feed hydrocarbons with mixed oxides comprising a major proportion of magnesium and a minor proportion of manganese, preferably under conditions which selectively convert the feed hydrocarbons to ethylene and ethane and particularly ethylene, including a temperature between about 625.degree. C. and 850.degree. C. The method is preferably carried out in the presence of steam at a mole ratio of steam/hydrocarbon of less than about 10:1. Selectivity to ethylene and ethane and particularly ethylene is improved and the life of the catalyst, during which the desired selectivity is attained, is extended by adding a promoting amount of at least one oxide of calcium, barium, strontium, tin and antimony. Further improvement can be obtained by limiting the amount of bound or fixed sulfur in the catalyst.Type: GrantFiled: July 25, 1985Date of Patent: November 4, 1986Assignee: Phillips Petroleum CompanyInventor: John H. Kolts
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Patent number: 4620051Abstract: A method of selectively cracking C.sub.3 and C.sub.4 hydrocarbons to C.sub.2 hydrocarbons, particularly ethylene, in which a body of cracking catalyst is established in a reaction zone and the feed hydrocarbons are passed through the body of catalyst while maintaining the conditions sufficient to convert the feed hydrocarbons to product hydrocarbons, including, a temperature in the upstream end of the body of catalyst at least about 100.degree. C. below the temperature in the downstream end of the body of catalyst. The cracking catalyst is preferably selected from the group consisting of: at least one oxide of manganese and at least one oxide of magnesium; at least one oxide of manganese and at least one oxide of at least one metal selected from the group consisting of Lanthanum Series metals, preferably lanthanum or cerium, and niobium; at least one oxide of iron and at least one oxide of magnesium; and at least one oxide of iron and at least one oxide of a Lanthanum Series metals or niobium.Type: GrantFiled: July 25, 1985Date of Patent: October 28, 1986Assignee: Philips Petroleum CompanyInventors: John H. Kolts, Gary A. Delzer
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Patent number: 4620052Abstract: Novel compositions of matter include: mixed oxides of (a) at least one oxide of chromium, at least one oxide of manganese and at least one oxide of magnesium, Lanthanum Series metals, preferably lanthanum and cerium, and/or niobium; (b) at least one oxide of chromium, at least one oxide of calcium, strontium, tin and/or antimony, at least one oxide of manganese and at least one oxide of magnesium, Lanthanum Series metals and/or niobium; (c) at least one oxide of chromium, at least one oxide of iron and at least one oxide of magnesium, Lanthanum Series metals and/or niobium; and (d) at least one oxide of chromium, at least one oxide of iron, at least one oxide of manganese and at least one oxide of magnesium, Lanthanum Series metals and/or niobium. These compositions are particularly effective as catalyst compositions for the conversion of C.sub.3 and C.sub.Type: GrantFiled: July 25, 1985Date of Patent: October 28, 1986Assignee: Phillips Petroleum CompanyInventors: John H. Kolts, Gary A. Delzer
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Patent number: 4615795Abstract: A process and system for the production of olefins from heavy hydrocarbon feedstocks. A heavy hydrocarbon feed is first pretreated at high pressure and moderate temperatures to preferentially remove coke precursors in a liquid product. The pretreated hydrocarbon is then separated into lighter and heavier fractions; the lighter fraction being further thermally cracked to produce olefins.Type: GrantFiled: December 20, 1984Date of Patent: October 7, 1986Assignee: Stone & Webster Engineering CorporationInventors: Herman N. Woebcke, Swami Narayanan, Axel R. Johnson
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Patent number: 4613722Abstract: Compositions of matter, including: a composition consisting of iron oxide and magnesium oxide; a composition comprising iron oxide, manganese oxide and magnesium oxide; a composition comprising a small amount of iron oxide and a larger amount of an oxide of a Lanthanum Series metal, particularly lanthanum and cerium; and a composition comprising iron oxide and niobium oxide. The above compositions are particularly useful as catalytic compositions for the conversion of C.sub.3 and C.sub.4 hydrocarbons to less saturated hydrocarbons, particularly ethylene and propylene and preferably ethylene, in the presence of steam. The steam substantially increases the active life of the catalytic composition, before regeneration is necessary, as well as significantly increasing the selectivity to ethylene. Limiting the amount of bound or fixed sulfur in the catalytic compositions also improves the catalysts.Type: GrantFiled: July 25, 1985Date of Patent: September 23, 1986Assignee: Phillips Petroleum CompanyInventors: John H. Kolts, Gary A. Delzer
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Patent number: 4613488Abstract: A process of manufacture of a crystalline aluminum silicate is disclosed wherein the aqueous forming solution has augmented thereto both a pyridine compound and a quaternary ammonium hydroxide. The process derives a novel crystalline aluminum silicate composition of matter.Type: GrantFiled: June 6, 1985Date of Patent: September 23, 1986Assignee: Shell Oil CompanyInventors: Willibrord A. Van Erp, Josepha M. E. Seelen-Kruijssen, Tom Huizinga
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Patent number: 4612407Abstract: Supported intermetallic compounds are produced by a two-step process. In the first step, a supported metal is formed, for example, by solvating a metallic salt such as nickel nitrate and applying it to a support medium. The treated support body is then heated in the presence of a reducing agent to produce elemental metal. The supported metal is then treated with a reactive organometallic or metal hydride compound to yield a supported intermetallic compound. For example, supported elemental nickel is treated with hexamethyldisilane to produce supported nickel silicide.Type: GrantFiled: January 29, 1986Date of Patent: September 16, 1986Assignee: AT&T LaboratoriesInventors: Lawrence H. Dubois, Ralph G. Nuzzo
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Patent number: 4610855Abstract: A process for preparing ZSM-14 zeolite, and a product thereof, is disclosed. The process uses an organic directing agent of the formulaR"--O--R'--O.sup.- --A.sup.m+where A is a cation having a valence m, R' is an inorganic or an organic acid moiety, and R" is a linear or branched aliphatic, aromatic or alkyl aromatic group.Type: GrantFiled: September 23, 1985Date of Patent: September 9, 1986Assignee: Mobil Oil CorporationInventors: Ernest W. Valyocsik, Eric G. Derouane
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Patent number: RE32265Abstract: .[.In a hydrogenation operation employing an ebullated catalytic bed, recycle is recovered from the hydrogenated product with at least 25%, by volume, of the recycle boiling above 950.degree. F. The recycle is cooled to a temperature of from 350.degree. to 600.degree. F. to separate coke precursors, prior to recycle to the hydrogenation. Higher conversion levels can be achieved by effecting recycle in such manner..]..Iadd.Disclosed is a hydrogenation process using at least one fluidized catalytic stage and a recycle material of heavy hydrogenated effluent. The heavy effluent material is cooled to a temperature within 350.degree.-600.degree. F. to separate toluene and heptane insoluble coke precursors prior to recycle. This separation may be enhanced by the use of centrifugation, filtration or a bed of particulate material (e.g. calcined coke). .Iaddend.Type: GrantFiled: May 17, 1985Date of Patent: October 14, 1986Assignee: Lummus Crest, Inc.Inventors: Harold Unger, Morgan C. Sze, Roger P. Van Dreisen