Group Viii Noble Metal Patents (Class 585/419)
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Patent number: 5073652Abstract: The aromatic hydrocarbons rich in benzene, toluene and xylene are prepared from a hydrocarbon feed having from 6 to 12 carbon atoms by feeding the hydrogen in admixture with hydrogen in a ratio ranging from 0 to less than 1 mole with respect to each mole of the hydrocarbon, into contact with a catalyst prepared by depositing at least one metal belonging to group VIII of the periodic table on a macroporous zeolite treated with a halogenated compound. The aromatic hydrocarbons rich in benzene, toluene and xylene are useful as a base for high octane number gasoline or as petrochemical raw materials.Type: GrantFiled: September 21, 1990Date of Patent: December 17, 1991Assignee: Research Association for Utilization of Light OilInventors: Hisashi Katsuno, Michio Sugimoto
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Patent number: 5059735Abstract: The C.sub.2 -C.sub.4 olefin yield is unexpectedly increased while coke and heavy aromatics production are decreased by the addition of a propane-rich supplemental feedstream in a process for catalytically upgrading C.sub.5 -C.sub.7 paraffinic feedstreams. Further benefits include increased conversion of the C.sub.5 -C.sub.7 paraffinic feedstream, decreased coke production and prolonged catalyst useful life. Udex raffinate is a particularly preferred feedstream.Type: GrantFiled: January 22, 1991Date of Patent: October 22, 1991Assignee: Mobil Oil Corp.Inventor: Margaret Nemet-Mavrodin
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Patent number: 5052561Abstract: The preferred reforming catalyst has a high silica to alumina molar ratio and a small crystallite size. The reforming process using the catalyst is preferably run without added hydrogen, and at low pressures and temperatures.Type: GrantFiled: March 19, 1990Date of Patent: October 1, 1991Assignee: Chevron Research & Technology CompanyInventors: Stephen J. Miller, Bernie F. Mulaskey
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Patent number: 5030338Abstract: A process and apparatus are disclosed for the catalytic conversion of hydrocarbons in a transport or sub-transport fluidized bed reaction zone. Inert particles are used to transfer heat to the reaction zone. The particles may be heated separately from the catalyst in a combustion zone or together with the catalyst in a regenerator. Fuel is fired to heat the inert particles or a mixture of catalyst and inert particles. Hydrogen deficient fuels such as charcoal or coke are preferred.Type: GrantFiled: November 9, 1988Date of Patent: July 9, 1991Assignee: Mobil Oil Corp.Inventors: Mohsen N. Harandi, Hartley Owen
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Patent number: 5026938Abstract: The present invention relates to a process for producing aromatic compounds from a hydrocarbon gas containing C.sub.3 through C.sub.5 paraffinic hydrocarbons under conversion conditions in the presence of a catalyst comprising a gallosilicate molecular sieve, a platinum metal component, and a rhenium metal component.Type: GrantFiled: June 30, 1989Date of Patent: June 25, 1991Assignee: Amoco CorporationInventor: Victor K. Shum
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Patent number: 5026921Abstract: Therein is provided a process for the aromatization of non-aromatic hydrocarbons having at least two carbon atoms. The non-aromatic feed is contacted with a catalyst which includes gallium or zinc which is incorporated into or onto a pillared layered silicate. A preferred pillared layered silicate is kenyaite containing interspathic silica.Type: GrantFiled: December 21, 1989Date of Patent: June 25, 1991Assignee: Mobil Oil CorporationInventors: Thomas F. Degnan, Jr., Ivy D. Johnson
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Patent number: 5019664Abstract: Aliphatic C.sub.2 to C.sub.12 hydrocarbon(s) are converted to olefin(s) and/or aromatic(s) in the presence of a low acidity Group VIII metal-containing zeolite MCM-22 catalyst, said zeolite exhibiting an Alpha value of not greater than about 150.Type: GrantFiled: January 24, 1990Date of Patent: May 28, 1991Assignee: Mobil Oil Corp.Inventors: Kenneth J. Del Rossi, Ralph M. Dessau, Albin Huss, Jr., Garry W. Kirker, David O. Marler, Randall D. Partridge
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Patent number: 5013423Abstract: Improved, dehydrocyclization and low-pressure reforming processes based on a non-acidic metal containing crystalline microporous indium catalyst, in which the feed is rich in C.sub.6 -C.sub.7 low octane hydrocarbons, such as paraffins, and in which the reformate has increased aromatic content and increased octane value over that of the feed are disclosed.Type: GrantFiled: January 11, 1989Date of Patent: May 7, 1991Assignee: Mobil Oil CorporationInventors: Nai Y. Chen, Ralph M. Dessau, Randall D. Partride, Ernest W. Valyocsik
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Patent number: 5012026Abstract: A fluid bed catalytic paraffin upgrading process is disclosed. By closely controlling catalyst particle size distribution and density, together with feedstock superficial vapor velocity, the fluid bed is maintained in a turbulent flow regime. Surprisingly, maintaining the fluid bed in a turbulent flow regime shifts the product selectivity away from methane and ethane and toward the more valuable products hydrogen, light olefins and C.sub.5 + gasoline. In the most preferred embodiment, the catalyst contains a dehydrogenation metal component such as gallium, zinc, platinum or rhenium to provide a C.sub.5+ gasoline product rich in aromatics. Catalysts useful in the inventive process include zeolites as well as layered siliceous materials.Type: GrantFiled: February 14, 1989Date of Patent: April 30, 1991Assignee: Mobil Oil Corp.Inventors: Amos A. Avidan, Margaret Nemet-Mavrodin, Jorge L. Soto
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Patent number: 5008481Abstract: There is provided a process for the aromatization of non-aromatic hydrocarbons having at least six carbon atoms. The non-aromatic feed is contacted with a catalyst which includes a base metal or noble metal which is incorporated into or onto a pillared layered silicate. A preferred pillared layered silicate is kenyaite containing interspathic silica, and a preferred base metal or noble metal is chromium.Type: GrantFiled: December 29, 1989Date of Patent: April 16, 1991Assignee: Mobil Oil CorporationInventors: Ivy D. Johnson, Pochen Chu, Charles T. Kresge
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Patent number: 4990714Abstract: A process and reactor apparatus are disclosed for upgrading paraffinic feedstocks to olefinic and/or aromatic products. Hydrogen diffuses through a selectively permeable membrane from the reaction zone into a combustion zone where it reacts exothermically with an oxygen-containing fluid to supply at least a portion of the endothermic heat of reaction for the paraffin upgrading process. Additionally, in-situ separation of by-product hydrogen from the reactant mixture in the reaction zone increases yield of valuable olefinic and aromatic products.Type: GrantFiled: May 4, 1989Date of Patent: February 5, 1991Assignee: Mobil Oil CorporationInventor: Margaret Nemet-Mavrodin
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Patent number: 4990710Abstract: Group VIII metal modified non-acidic tin containing microporous crystalline materials which in catalysis exhibit high selectively for dehydrogenation and dehydrocyclization are described.Type: GrantFiled: June 24, 1988Date of Patent: February 5, 1991Assignee: Mobil Oil CorporationInventors: Ralph M. Dessau, Ernest W. Valyocsik, James C. Vartuli
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Patent number: 4983274Abstract: The catalytic properties of a metal-containing shape selective crystalline silicate zeolite are significantly improved by converting said metal to an intermetallic compound. Thus, for example, zeolite beta containing the intermetallic component platinum zeolite demonstrates improved catalytic properties for dewaxing a hydrocarbon feedstock compared to zeolite beta containing platinum metal alone.Type: GrantFiled: October 6, 1988Date of Patent: January 8, 1991Assignee: Mobil Oil Corp.Inventors: Nai Y. Chen, Thomas F. Degnan, Paul B. Weisz
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Patent number: 4982033Abstract: Aliphatic C.sub.2 to C.sub.12 hydrocarbons are converted in the presence of a particular zeolite catalyst to a mixture of aromatics, optionally containing olefins.Type: GrantFiled: January 24, 1990Date of Patent: January 1, 1991Assignee: Mobil Oil Corp.Inventors: Cynthia T-W. Chu, Thomas F. Degnan, Billy K. Huh
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Patent number: 4973778Abstract: A reactor system contained in a fired heater and a hydrocarbon upgrading process are discosed for the concurrent conversion of a hydrocarbon feedstock and the regeneration of a deactivated catalyst. An effluent product slipstream from a set of operating reactors is used to hydrogen-regenerate deactivated catalyst in another set of reactors. Flue gas withdrawn from the fired heater stack is used as a purge and/or carrier gas during oxygen-regeneration of the catalyst.Type: GrantFiled: December 29, 1987Date of Patent: November 27, 1990Assignee: Mobil Oil Corp.Inventors: Mohsen N. Harandi, Hartley Owen
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Patent number: 4973776Abstract: A process is described for the gas-phase condensation of natural gas or methane into gasoline-range hydrocarbons comprising the steps of: (a) reacting a mixture of methane and acetylene in the presence of a solid superacid catalyst to form isobutene, and (b) converting the isobutene product into gasoline-range hydrocarbons in the presence of a crystalline silicate zeolite catalyst.Type: GrantFiled: December 12, 1989Date of Patent: November 27, 1990Assignee: Energy, Mines & Resources - CanadaInventors: Vincenza M. Allenger, Raj N. Pandey
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Patent number: 4962250Abstract: Aliphatic C.sub.2 to C.sub.12 hydrocarbon(s) are converted to olefin(s) and/or aromatic(s) in the presence of an essentially non-acidic Group VIII metal species-containing zeolite MCM-22 catalyst.Type: GrantFiled: January 24, 1990Date of Patent: October 9, 1990Assignee: Mobile Oil Corp.Inventors: Ralph M. Dessau, Randall D. Partridge
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Patent number: 4962251Abstract: A process for producing aromatic hydrocarbons in a high yield by introducing a naphtha fraction the cyclopentane content of which is controlled to not more than 1% by weight, or the methylpentane content is controlled to not more than 10% by weight, in a catalytic reaction tower, and contacting with a catalyst comprising a large pore zeolite containing at least one of Group VII metals of the Periodic Table. In this process, the catalyst cycle is greatly lengthened.Type: GrantFiled: December 28, 1989Date of Patent: October 9, 1990Assignee: Research Association for Utilization of Light OilInventors: Takashi Yamamoto, Toshikazu Yoneda, Hisashi Katsuno, Takashi Murakawa, Nobuyuki Takahashi
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Patent number: 4956510Abstract: Valuable product yield and catalyst useful life are improved by regenerating spent catalyst at temperatures below those maintained in the reaction zone. Relatively cold regenerated catalyst is then preheated and reactor effluent product is quenched by directly contacting the regenerated catalyst with hot reactor effluent product. The quenching step minimizes undesirable thermal cracking of valuable product to C.sub.2 -light gas. The process and apparatus are useful both in aromatization and dehydrogenation of aliphatic hydrocarbons.Type: GrantFiled: March 14, 1989Date of Patent: September 11, 1990Assignee: Mobil Oil Corp.Inventor: Mohsen N. Harandi
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Patent number: 4950828Abstract: The present invention relates to a process for producing aromatic compounds from a hydrocarbon gas containing C.sub.3 through C.sub.5 paraffinic hydrocarbons under conversion conditions in the presence of a catalyst comprising a borosilicate molecular sieve, a platinum metal component and a gallium metal component.Type: GrantFiled: June 30, 1989Date of Patent: August 21, 1990Assignee: Amoco CorporationInventor: Victor K. Shum
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Patent number: 4936977Abstract: A crystalline zeolite SSZ-24 is prepared using an adamantane quaternary ion as a template.Type: GrantFiled: April 5, 1989Date of Patent: June 26, 1990Assignee: Chevron Research CompanyInventors: Stacey I. Zones, D. L. Holtermann, D. S. Santilli, J. N. Ziemer
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Patent number: 4935573Abstract: A catalyst composition suitable for use in aromatization of non-aromatic hydrocarbons comprises a shape-selective crystalline slicate such as ZSM-5 and a titanometallate-type layered metal oxide comprising a layered metal oxide and pillars of an oxide of at least one element selected from Groups IB, IIB, IIIA, IIIB, IVA, IVB, VA, VB, VIA, VIIA and VIIIA of the Periodic Table of the Elements separating the layers of the metal oxide where each layer of the metal oxide has the general formula[M.sub.x .sub.y Z.sub.2-(x+y) O.sub.4 ].sup.Type: GrantFiled: February 23, 1989Date of Patent: June 19, 1990Assignee: Mobil Oil CorporationInventors: Brent A. Aufdembrink, Thomas F. Degnan, Sharon B. McCullen
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Patent number: 4935566Abstract: An improved, low-pressure dehydrocyclization and/or reforming process based on a non-acidic metal containing crystalline microporous tin catalyst, in which the feed is rich in low octane hydrocarbons, such as paraffins, and in which the product has increased aromatic content and increased octane value over that of the feed.Type: GrantFiled: January 11, 1989Date of Patent: June 19, 1990Assignee: Mobil Oil CorporationInventors: Ralph M. Dessau, Randall D. Partridge, Ernest W. Valyocsik, James C. Vartuli
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Patent number: 4910357Abstract: A process selective for converting dimethylhexanes to aromatic analogs is described. Application of the exhibited selectivity of the process allows upgrading alkylate dimethylhexane(s) of low RON to produce higher RON analogs without affecting changes in other components of the alkylate. The catalysts preferred comprise platinum and non-acidic supports such as [Sn]ZSM-5 and [In]ZSM-5.Type: GrantFiled: June 24, 1988Date of Patent: March 20, 1990Assignee: Mobil Oil CorporationInventors: Ralph M. Dessau, Paul G. Rodewald
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Patent number: 4888105Abstract: The dehydrocyclization of a feed containing one or more acyclic hydrocarbons capable of undergoing ring closure to provide aromatic hydrocarbons is accomplished by contacting the feed under dehydrocyclization conditions with a zeolite L dehydrocyclization catalyst which is substantially free of zeolite T and which contains at least one Group VIII metal component, thereby converting at least a portion of the acyclic hydrocarbon content of the feed to aromatic compound(s). Use of the foregoing zeolite L dehydrocyclization catalyst has been found to result in less non-selective hydrocracking of naphtha range materials to gaseous hydrocarbons and greater conversion of low octane paraffins to high octane aromatics than that achieved with a zeolite L synthesized by a prior procedure which results in the co-production of zeolite T contaminant.Type: GrantFiled: February 16, 1988Date of Patent: December 19, 1989Assignee: Mobil Oil CorporationInventors: Albin Huss, Jr., Sowmithri Krishnamurthy, William D. McHale
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Patent number: 4885422Abstract: A process for converting aliphatic hydrocarbons to aromatic hydrocarbons is disclosed. The process utilizes a nonacidic hydrocarbon conversion catalyst comprising potassium form L-zeolite, a Group VIII metal, and an alumina-magnesia binder wherein the weight ratio of zeolite to binder is at least 1:1.Type: GrantFiled: January 9, 1989Date of Patent: December 5, 1989Assignee: UOPInventor: Li Wang
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Patent number: 4870223Abstract: A nonacidic hydrocarbon conversion catalyst is disclosed which is prepared by incorporating potassium hydroxide into a composite of nonacidic L-zeolite and amorphous silica. A preparation procedure is also disclosed as well as a process for dehydrocyclizing C.sub.6 to C.sub.8 aliphatic hydrocarbons.Type: GrantFiled: December 30, 1988Date of Patent: September 26, 1989Assignee: UOPInventors: Daniel L. Ellig, George J. Antos
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Patent number: 4867864Abstract: The invention relates to catalytic treatment of paraffin feeds to alter the hydrogen content of the feed, for example, by producing effluents the aromatic content of which exceeds that of the feed in which the catalyst is a non-acidic composition containing a strong dehydrogenation/hydrogenation metal and zeolite beta in non-acidic form.Type: GrantFiled: December 13, 1988Date of Patent: September 19, 1989Inventor: Ralph M. Dessau
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Patent number: 4861932Abstract: A process for converting a C.sub.2 -C.sub.12 paraffinic hydrocarbon feed to aromatics comprising passing the feed through a first conversion zone wherein the feed contacts a noble metal/low acidity medium pore size zeolite catalyst, and then passing the resulting hydrocarbon mixture through a second conversion zone wherein the resulting hydrocarbon mixture contacts a medium pore size acidic zeolite catalyst.Type: GrantFiled: December 31, 1987Date of Patent: August 29, 1989Assignee: Mobil Oil Corp.Inventors: Nai Y. Chen, Thomas F. Degnan, Sharon B. McCullen
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Patent number: 4861933Abstract: A catalytic process is provided for converting a C.sub.3.sup.+ feedstock containing at least 50 wt. % of C.sub.3 to C.sub.12 aliphatic hydrocarbons to aromatics by contacting the feedstock under conversion conditions of a severity resulting in a conversion of at least about 80 wt. % of said hydrocarbons, with a catalyst prepared by loading with gallium a zeolite having a Constraint Index within the approximate range of 1 to 12 and a silica/alumina molar ratio of about 25:1 to 1000:1, and subsequently calcining the catalyst at a temperature of at least about 700.degree. C.Type: GrantFiled: September 6, 1988Date of Patent: August 29, 1989Assignee: Mobil Oil Corp.Inventor: Margaret Nemet-Mavrodin
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Patent number: 4857497Abstract: A catalyst comprising a silica-containing carrier on which a metal component iron, nickel, or cobalt promoted by zirconium is supported snd, in addition, as promoter a noble metal from Group VIII of the Periodic Table; the promoter cobalt/zirconium catalyst is suitable for the preparation of hydrocarbons from carbon monoxide and hydrogen.Type: GrantFiled: April 25, 1988Date of Patent: August 15, 1989Assignee: Shell Oil CompanyInventors: Krijn P. De Jong, Johannes H. E. Glezer, Martin F. M. Post
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Patent number: 4855269Abstract: The present invention is a process for regenerating a large-pore zeolitic catalyst that has been deactivated by the formation of Group VIII metal agglomerates on the catalyst surface. In the process, the Group VIII metal agglomerates are redispersed to produce agglomerates of small size. It comprises an oxychlorination step, a nitrogen purge step and a reduction step.Type: GrantFiled: June 29, 1987Date of Patent: August 8, 1989Assignee: Chevron Research CompanyInventor: Donald H. Mohr
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Patent number: 4849568Abstract: A process for converting a C.sub.1 -C.sub.12 non-aromatic hydrocarbon feed to aromatics by contacting the feed with a zinc-containing medium pore size zeolite catalyst in a conversion zone, comprising adding at least one non-metal oxide or sulfide to the feed in an amount effective to prevent elution of zinc from the zinc-containing zeolite catalyst.Type: GrantFiled: December 31, 1987Date of Patent: July 18, 1989Assignee: Mobil Oil CorporationInventors: Sharon B. McCullen, Paul G. Rodewald
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Patent number: 4835336Abstract: A process for converting a C.sub.6 -C.sub.12 paraffinic hydrocarbon feed to aromatics by contacting the feed with a noble metal/low acidity medium pore size zeolite catalyst in a conversion zone by modifying the noble metal component of the catalyst to its sulfide form by either presulfiding the catalyst or adding at least one of H.sub.2 S, SO.sub.2 or an organic sulfur compound to the feed in an amount effective to suppress hydrogenolysis and increase aromatic selectivity of the catalyst.Type: GrantFiled: December 31, 1987Date of Patent: May 30, 1989Assignee: Mobil Oil CorporationInventor: Sharon B. McCullen
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Patent number: 4832824Abstract: This process is for the reforming of (particularly; the aromatization of and isomerization of) alkanes to produce aromatics isonomal alkanes. Although the process and catalyst parameters can be adjusted to produce a majority of one or the other of the aromatic or isomerate products, the process is especially favorable for the production of a superior gasoline blending component having high octane blending values and containing significant amounts of both aromatics and branched paraffins. Only a small amount of cracking takes place. The process is catalytic and uses a high silica faujasite type zeolite, which contains a catalytic amount of at least one Group VIII noble metal, particularly platinum, within the pores of the zeolite.Type: GrantFiled: December 19, 1986Date of Patent: May 23, 1989Inventors: David E. W. Vaughan, Amal K. Ghosh
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Patent number: 4827068Abstract: Aromatization of non-aromatics is carried out by contacting with a titanosilicate having the structure of zeolite beta which contains noble metal.Type: GrantFiled: December 29, 1987Date of Patent: May 2, 1989Assignee: Mobil Oil CorporationInventors: Nai Y. Chen, Sharon B. McCullen
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Patent number: 4822942Abstract: An indium containing crystalline microporous material also containing a dehydrogenation component exhibits high selectivity for the aromatization of a normal paraffin to styrene, under dehydrocyclization conditions.Group VIII metal-containing non-acidic crystalline microporous indium containing materials are highly selective catalysts for styrene production from n-octane.Type: GrantFiled: July 1, 1988Date of Patent: April 18, 1989Assignee: Mobil Oil CorporationInventors: Ralph M. Dessau, Ernest W. Valyocsik
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Patent number: 4808295Abstract: A process is provided for converting a feedstock comprising a preponderant amount of C.sub.2 -C.sub.10 aliphatic compounds to a product having a high proportion of benzene in a two stage process, with the effluent from the first stage passing directly to the second stage, i.e., with no intermediate processing such as purification or separation. In the first stage, the feedstock is contacted under suitable conversion conditions with a catalyst comprising an aluminosilicate zeolite having a Constraint Index in the approximate range of 1 to 12 and a degree of acidity indicated by an alpha value of at least about 3.Type: GrantFiled: December 16, 1987Date of Patent: February 28, 1989Assignee: Mobil Oil CorporationInventor: Margaret Nemet-Mavrodin
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Patent number: 4808763Abstract: The present invention relates to a process for producing aromatic compounds from a hydrocarbon gas containing paraffinic hydrocarbons under conversion conditions in the presence of a catalyst comprising a gallosilicate molecular sieve and a platinum metal component.Type: GrantFiled: August 5, 1987Date of Patent: February 28, 1989Assignee: Amoco CorporationInventor: Victor K. Shum
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Patent number: 4806699Abstract: Aromatic hydrocarbons are produced from a feedstock comprising ethane and/or propane and/or butane by the steps of:(A) reacting the feedstock in the presence of a dehydrocyclodimerization catalyst to produce a product comprising aromatic hydrocarbons, hydrogen and methane,(B) separating the product of step (A) into an aromatic hydrocarbon fraction, a methane-rich gaseous fraction and a hydrogen-rich gaseous fraction,(C) feeding all or part of the methane-rich gaseous fraction separated in step (B) to a synthesis gas production unit, thereby to produce synthesis gas, and(D) contacting the synthesis gas from step (C) together with all or part of the hydrogen-rich gaseous fraction separated in step (B), thereby increasing the hydrogen to carbon monoxide ratio of the synthesis gas, with a Fischer-Tropsch conversion catalyst to produce a hydrocarbon product.Type: GrantFiled: November 5, 1987Date of Patent: February 21, 1989Assignee: The British Petroleum Company p.l.c.Inventors: David J. H. Smith, William T. Woodfin
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Patent number: 4806701Abstract: The present invention relates to a process for producing aromatic compounds from hydrocarbon gas containing paraffinic hydrocarbons under conversion conditions in the presence of a catalyst comprising a gallosilicate molecular sieve, a Group VIII metal component, and a Group IB metal component.Type: GrantFiled: August 5, 1987Date of Patent: February 21, 1989Assignee: Amoco CorporationInventor: Victor K. Shum
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Patent number: 4795846Abstract: An improved dehydrocyclization process for the selective conversion of light hydrocarbons to aromatics is presented. The activity of a catalyst containing nonacidic L-zeolite is greatly enhanced by the addition of water, water precursors, or mixtures thereof to the reaction zone during the dehydrocyclization reaction. Addition of between 10 and 100 wt. ppm H.sub.2 O results in a higher product yield of aromatics with increased product octane.Type: GrantFiled: October 1, 1987Date of Patent: January 3, 1989Assignee: UOP Inc.Inventors: Joseph Zmich, Michael B. Russ, Visnja A. Gembicki
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Patent number: 4795549Abstract: A catalyst for dehydrocyclization is disclosed comprising a Group VIII metal, the zeolite UHP-Y and, optionally, a halogen component. The instant invention provides reforming processes wherein more valuable products are formed that heretofore formed by use of other zeolite-containing catalysts.Type: GrantFiled: June 16, 1986Date of Patent: January 3, 1989Assignee: Union Carbide CorporationInventors: Peter K. Coughlin, Jule A. Rabo
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Patent number: 4766265Abstract: The invention relates to a process for the conversion of ethane to liquid aromatic hydrocarbons comprising contacting, at a temperature of from about 500.degree. C. to about 700.degree. C., an ethane rich feedstock with a catalyst comprising a gallium modified molecular sieve catalyst, promoted with rhenium and a metal selected from the group consisting of nickel, palladium, platinum, rhodium and iridium.Type: GrantFiled: June 8, 1987Date of Patent: August 23, 1988Assignee: The Standard Oil CompanyInventors: Michael J. Desmond, Joann Henry
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Patent number: 4761512Abstract: A process for producing aromatic hydrocarbons which comprises contacting at least one type of hydrocarbon selected from paraffin, olefin, acetylene, cyclic paraffin and cyclic olefin-based hydrocarbons with a catalyst comprising a L-type zeolite treated with a halogen-containing compound and platinum deposited thereon.Type: GrantFiled: March 31, 1987Date of Patent: August 2, 1988Assignee: Research Association for Utilization of Light OilInventors: Hisashi Katsuno, Takashi Murakawa, Toshikazu Yoneda
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Patent number: 4753720Abstract: Olefin containing gasolines are upgraded to improve octane number with less than 5 wt.% yield loss by contacting such gasolines at elevated temperatures with acidic zeolites having alpha values between 5 and 100.Type: GrantFiled: April 16, 1987Date of Patent: June 28, 1988Assignee: Mobil Oil CorporationInventor: Roger A. Morrison
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Patent number: 4746764Abstract: A novel dehydrocyclization process for the conversion of C.sub.6 -plus paraffins to their corresponding aromatics is presented. This process is characterized by a unique catalytic composite which contains a nonacidic L-zeolite, a Group VIII metal component and sufficient surface-deposited alkali metal to provide a surface-deposited alkali metal index of from about 40 to about 500. A further characterization is that the catalyst is prepared without subjecting the L-zeolite to a solution having a pH of greater than 9, and without appreciable loss of SiO.sub.2 from the L-zeolite.Type: GrantFiled: December 8, 1986Date of Patent: May 24, 1988Assignee: UOP Inc.Inventors: Susan L. Lambert, R. Joe Lawson, Russell W. Johnson
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Patent number: 4741820Abstract: Reforming and dehydrocyclization catalysts and processes are disclosed wherein reforming catalysts comprise a Group VIII metal and at least one medium pore non-zeolitic molecular sieve characterized in the calcined form by an adsorption of isobutane of at least 2 percent by weight at a partial pressure of 500 torr and a termperature of 20.degree. C. and characterized by an adsorption of triethylamine less than about 5 percent by weight at a partial pressure of 2.6 torr and a temperature of 22.degree. C. In one embodiment the catalyst includes a Group VII metal on a halogenated carrier.Type: GrantFiled: March 27, 1986Date of Patent: May 3, 1988Assignee: Union Carbide CorporationInventors: Peter K. Coughlin, Regis J. Pellet
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Patent number: 4711970Abstract: A method for increasing the total amount of lattice metal in the framework of a particular porous inorganic crystalline composition, its conversion to hydrogen or hydronium form and use thereof as a catalyst component having enhanced catalytic activity for conversion of paraffins and/or olefins to higher hydrocarbons is provided.Type: GrantFiled: January 8, 1986Date of Patent: December 8, 1987Assignee: Mobil Oil CorporationInventors: Clarence D. Chang, Joseph N. Miale
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Patent number: 4705907Abstract: Liquid hydrocarbon is prepared with high efficiency from hydrocarbon gas containing C.sub.2 -C.sub.5 paraffinic hydrocarbons and/or C.sub.2 -C.sub.5 olefinic hydrocarbons by bringing the gas into contact with a metallo-silicate catalyst having the following chemical composition in mol %:Si/Me:15-3500OH.sup.- /SiO.sub.2 :0.3-1.0H.sub.2 O/SiO.sub.2 :30-100R/(R+alkali metal):0.05-0.15NaCl/H.sub.2 O:0.01-0.06where R is quaternary alkylammonium cation,alkali metal is Na or K, Me is metal ion of B, Al, Ti, V, Cr, Mn, Fe, Co, Ni, Zn, Ga, Ge, Zr, Mo, W, La or Sc,and having the following acidity per g of catalyst:total acid 0.1-4.5 milli-equivalentstrong acid 0.05-2.0 milli-equivalentweak acid 0.05-3.0 milli-equivalent.Type: GrantFiled: May 19, 1986Date of Patent: November 10, 1987Assignees: Showa Shell Sekiyu Kabushiki Kaisha, Tomoyuki InuiInventor: Tomoyuki Inui