With Halogen Containing Additive Patents (Class 208/139)
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Patent number: 4322286Abstract: Dehydrocyclizable hydrocarbons are converted to aromatics by contacting them at hydrocarbon dehydrocyclization conditions with an attenuated superactive acidic multimetallic catalytic composite comprising a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing catalytically effective amounts of a halogen component, a tin component and a uniform dispersion of a catalytically effective amount of a platinum group component which is maintained in the elemental metallic state. The platinum group, pyrolyzed rhenium carbonyl, tin and halogen components are present in the multimetallic catalyst in amounts respectively, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal, about 0.01 to about 5 wt. % rhenium, about 0.005 to about 5 wt. % tin and about 0.1 to about 3.5 wt. % halogen.Type: GrantFiled: January 5, 1981Date of Patent: March 30, 1982Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: 4322285Abstract: Dehydrocyclizable hydrocarbons are converted to aromatics by contacting them at hydrogen dehydrocyclization conditions with an attenuated superactive acidic multimetallic catalytic composite comprising a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing catalytically effective amounts of a halogen component, a manganese component and a uniform dispersion of a catalytically effective amount of a platinum group component which is maintained in the elemental metallic state. The platinum group, pyrolyzed rhenium carbonyl, manganese and halogen components are present in the multimetallic catalyst in amounts respectively, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal, about 0.01 to about 5 wt. % rhenium, about 0.01 to about 5 wt. % manganese and about 0.1 to about 3.5 wt. % halogen.Type: GrantFiled: November 24, 1980Date of Patent: March 30, 1982Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: 4319984Abstract: There is disclosed a catalyst, which catalyst comprises a physical particle-form mixture of a Component A and a Component B, said Component A comprising at least one Group VIII noble metal deposed on a solid catalyst support material providing acidic catalytic sites and said Component B comprising rhenium or a compound of rhenium deposed on a solid catalyst support material, said catalyst having been prepared by thoroughly blending finely-divided particles of Component A and Component B to provide a thoroughly-blended composite, said finely-divided particles having a particle diameter that is less than 100 mesh (150 microns), and forming said composite into particles having a size that is greater than 100 mesh (150 microns) and being suitable for use in a hydrocarbon conversion reaction zone.Type: GrantFiled: February 24, 1981Date of Patent: March 16, 1982Assignee: Standard Oil Company (Indiana)Inventors: Regis J. Pellet, Ralph J. Bertolacini
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Patent number: 4312792Abstract: Dehydrogenatable hydrocarbons are dehydrogenated by contacting them, at hydrocarbon dehydrogenation conditions, with a novel attenuated superactive multimetallic catalytic composite comprising a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of catalytically effective amounts of a platinum group component maintained in the elemental metallic state, and of a cadmium component. An example of the attenuated superactive nonacidic multimetallic catalytic composite disclosed herein is a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of catalytically effective amounts of an alkali or alkaline earth component, a cadmium component, and of a platinum group component which is maintained in the elemental metallic state during the incorporation of a rhenium carbonyl component.Type: GrantFiled: October 27, 1980Date of Patent: January 26, 1982Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: 4311582Abstract: Thermal stability of a halide-promoted, supported noble metal reforming catalyst is improved by employing a modified alumina support whose alumina precursor comprises at least about 75 weight percent boehmite, having an average crystallite diameter no greater than about 60 Angstroms. The thermal stability of the support is improved by the inclusion of a minor amount of silica, preferably added as an alkali-metal silicate to a mull of alumina prior to its extrusion and calcination with subsequent washing to remove the alkali metal.Type: GrantFiled: October 2, 1980Date of Patent: January 19, 1982Assignee: Atlantic Richfield CompanyInventors: Marvin F. L. Johnson, John A. Jaecker
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Patent number: 4306963Abstract: Thermal stability of a halide-promoted, supported noble metal reforming catalyst is improved by employing a modified alumina support whose alumina precursor comprises at least about 75 weight percent boehmite, having an average crystallite diameter no greater than about 60 Angstroms. The thermal stability of the support is improved by the inclusion of a minor amount of silica, preferably added as an orthosilicate ester to a mull of alumina prior to its extrusion and calcination.Type: GrantFiled: October 2, 1980Date of Patent: December 22, 1981Assignee: Atlantic Richfield CompanyInventor: Marvin F. L. Johnson
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Patent number: 4305811Abstract: Thermal stability of a halide-promoted, alumina-supported noble metal reforming catalyst is improved by employing an alumina support precursor which comprises at least about 75 weight percent boehmite, having an average crystallite diameter no greater than about 60 Angstroms.Type: GrantFiled: October 2, 1980Date of Patent: December 15, 1981Assignee: Atlantic Richfield CompanyInventor: Marvin F. L. Johnson
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Patent number: 4305810Abstract: Thermal stability of a halide-promoted, supported noble metal reforming catalyst is improved by employing a modified alumina support whose alumina precusor comprises at least about 75 weight percent boehmite, having an average crystallite diameter no greater than about 60 Angstroms. The thermal stability of the support is improved by the inclusion of a minor amount of silica, preferably added as a low-sodium colloidal silica dispersion to a mull of alumina prior to its extrusion and calcination.Type: GrantFiled: October 2, 1980Date of Patent: December 15, 1981Assignee: Atlantic Richfield CompanyInventors: Marvin F. L. Johnson, Elmer W. Breder, Jr.
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Patent number: 4303500Abstract: A catalyst comprised of platinum, copper, selenium and halogen, composited with an inorganic oxide support or carrier, preferably alumina. The catalyst is one which possesses an intrinsically high activity, is stable and can operate at reforming conditions at high severities.Type: GrantFiled: November 12, 1980Date of Patent: December 1, 1981Assignee: Exxon Research & Engineering Co.Inventors: Paul E. Eberly, Jr., Charles H. Mauldin, William C. Baird, Jr.
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Patent number: 4302358Abstract: There is disclosed a catalyst, which catalyst comprises a physical particle-form mixture of a Component A and a Component B, said Component A comprising at least one Group VIII noble metal deposed on a solid catalyst support material providing acidic catalytic sites and said Component B comprising rhenium or a compound of rhenium deposed on a solid catalyst support material, said catalyst having been prepared by thoroughly blending finely-divided particles of Component A and Component B to provide a thoroughly-blended composite, said finely-divided particles having a particle diameter that is less than 100 mesh (150 microns), and forming said composite into particles having a size that is greater than 100 mesh (150 microns) and being suitable for use in a hydrocarbon conversion reaction zone.Type: GrantFiled: October 22, 1979Date of Patent: November 24, 1981Assignee: Standard Oil Company (Indiana)Inventors: Regis J. Pellet, Ralph J. Bertolacini
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Patent number: 4299689Abstract: Hydrocarbons are converted by contacting them at hydrocarbon conversion conditions with a novel attenuated superactive multimetallic catalytic composite comprising a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of catalytically effective amounts of a platinum group component, which is maintained in the elemental metallic state during the incorporation and pyrolysis of the rhenium carbonyl component, and of an iron component. In a highly preferred embodiment, this novel catalytic composite also contains a catalytically effective amount of a halogen component. The platinum group component, pyrolyzed rhenium carbonyl component, iron component and optional halogen component are preferably present in the multimetallic catalytic composite in amounts, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal, about 0.01 to about 5 wt. % rhenium, about 0.Type: GrantFiled: October 23, 1980Date of Patent: November 10, 1981Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: 4298461Abstract: A hydrocarbon conversion catalyst comprising at least one platinum-group metal deposited on a composite comprising (I) alumina and (II) rhenium deposited on silica. The catalyst eliminates the need for presulfiding treatment required by conventional rhenium-promoted catalyst in reforming service, without comparative loss in reforming performance.Type: GrantFiled: November 8, 1979Date of Patent: November 3, 1981Assignee: Standard Oil Company (Indiana)Inventors: Regis J. Pellet, Michael J. Gradassi, Ralph J. Bertolacini
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Patent number: 4298462Abstract: Dehydrocyclizable hydrocarbons are converted to aromatics by contacting them at hydrocarbon dehydrocyclization conditions with an acidic multimetallic catalytic composite comprising a combination of catalytically effective amounts of a platinum group component, a nickel component, a zinc component, and a halogen component with a porous carrier material. The platinum group, nickel, zinc and halogen components are present in the multimetallic catalyst in amounts respectively, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal, about 0.05 to about 5 wt. % nickel, about 0.01 to about 5 wt. % zinc, and about 0.1 to about 3.5 wt. % halogen.Type: GrantFiled: November 17, 1980Date of Patent: November 3, 1981Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: 4297205Abstract: There is disclosed a catalyst for the reforming of hydrocarbon streams. This catalyst comprises iridium as a hydrogenation component on a support of zirconia and alumina. The support comprises zirconia in an amount of about 3 wt.% to about 15 wt.% zirconia or at least 60 wt.% zirconia. The iridium is present in an amount of about 0.05 wt.% to about 1.5 wt.%, calculated as the metal and based upon the total weight of the catalyst.Also disclosed is a reforming process, which process comprises contacting a hydrocarbon stream in a reaction zone under reforming conditions and in the presence of hydrogen with the above-described catalyst.Type: GrantFiled: March 26, 1980Date of Patent: October 27, 1981Assignee: Standard Oil Company (Indiana)Inventor: Rodney L. Mieville
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Patent number: 4295957Abstract: A catalyst constituted of a composite which includes hydrogenation-dehydrogenation components comprised of palladium and platinum in total concentration ranging from about 0.2 to about 0.6 percent, in molar concentration of palladium:platinum ranging from about 1:1 to about 10:1 composited with an inorganic oxide support. In its preferred aspects the catalyst composite also contains rhenium, and more preferably a small amount of copper is added to suppress hydrogenolysis, which is particularly acute in reforming during the early period of operation when the catalyst is placed on stream, i.e., at the startup of a reactor; and process of employing such catalysts in reforming.Type: GrantFiled: July 14, 1980Date of Patent: October 20, 1981Assignee: Exxon Research & Engineering Co.Inventors: Charles H. Mauldin, William C. Baird, Jr.
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Patent number: 4295960Abstract: Dehydrocyclizable hydrocarbons are converted to aromatics by contacting them at hydrocarbon dehydrocyclization conditions with an attenuated superactive acidic multimetallic catalytic composite comprising a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing catalytically effective amounts of a halogen component, a cadmium component and a uniform dispersion of a catalytically effective amount of a platinum group component which is maintained in the elemental metallic state. The platinum group, pyrolyzed rhenium carbonyl, cadmium and halogen components are present in the multimetallic catalyst in amounts respectively, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal, about 0.01 to about 5 wt. % rhenium, about 0.01 to about 5 wt. % cadmium and about 0.1 to about 3.5 wt. % halogen.Type: GrantFiled: November 3, 1980Date of Patent: October 20, 1981Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: 4295959Abstract: Dehydrocyclizable hydrocarbons are converted to aromatics by contacting them at hydrocarbon dehydrocyclization conditions with an attenuated superactive acidic multimetallic catalytic composite comprising a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing catalytically effective amounts of a halogen component, a silver component and a uniform dispersion a catalytically effective amount of a platinum group component which is maintained in the elemental metallic state. The platinum group, pyrolyzed rhenium carbonyl, silver and halogen components are present in the multimetallic catalyst in amounts respectively, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal, about 0.01 to about 5 wt. % rhenium, about 0.01 to about 5 wt. % silver and about 0.1 to about 3.5 wt. % halogen.Type: GrantFiled: October 20, 1980Date of Patent: October 20, 1981Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: 4295958Abstract: A catalyst constituted of a composite which includes hydrogenation-dehydrogenation components comprised of platinum and rhenium to which a small amount of copper is added to suppress hydrogenolysis, which is particularly acute in reforming during the early period of operation when the catalyst is placed on stream, i.e., at the startup of a reactor; and process of employing such catalyst in reforming.Type: GrantFiled: July 14, 1980Date of Patent: October 20, 1981Assignee: Exxon Research & Engineering Co.Inventors: Charles H. Mauldin, William C. Baird, Jr.
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Patent number: 4292204Abstract: A catalyst constituted of a composite which includes hydrogenation-dehydrogenation components comprised of palladium and rhenium to which a small amount of iridium is added to increase the aromatic content of the reformate, particularly the high octane C.sub.9.sup.+ aromatics, and reduce the coking tendency of the catalyst. It also encompasses the process of employing such catalyst in reforming, particularly high severity low pressure, semi-regenerative reforming.Type: GrantFiled: June 29, 1979Date of Patent: September 29, 1981Assignee: Exxon Research & Engineering Co.Inventors: Charles H. Mauldin, William C. Baird, Jr.
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Patent number: 4288348Abstract: There is provided, in accordance with the present invention, a catalyst composition made up of a mixture of two components, one component comprising a minor proportion of platinum and rhenium on a support and the second component comprising a minor proportion of iridium on a separate support. A process for reforming a charge stock, such as naphtha, utilizing such catalyst is also provided.Type: GrantFiled: February 13, 1980Date of Patent: September 8, 1981Assignee: Mobil Oil CorporationInventor: Hans J. Schoennagel
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Patent number: 4282086Abstract: A process for desensitizing a hypersensitive, high activity reforming catalyst for suppression of hydrogenolysis which is particularly acute during the early portion of the period that the catalyst is placed on stream, i.e., at the startup of a reactor. The catalyst is constituted of a composite which includes a Group VIII nobel metal hydrogenation-dehydrogenation component, notably platinum, and iridium or rhenium, or both, and sulfurous acid or sulfuric acid, or both. Hydrogenolysis is suppressed by use of the catalyst during reforming.Type: GrantFiled: September 27, 1979Date of Patent: August 4, 1981Assignee: Exxon Research & Engineering Co.Inventor: Paul E. Eberly, Jr.
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Patent number: 4280899Abstract: Dehydrocyclizable hydrocarbons are converted to aromatics by contacting them at hydrocarbon dehydrocyclization conditions with an acidic multimetallic catalytic composite comprising a combination of catalytically effective amounts of a platinum group component, a cobalt component, a tantalum component, and a halogen component with a porous carrier material. The platinum group, cobalt, tantalum and halogen components are present in the multimetallic catalyst in amounts respectively, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal, about 0.05 to about 5 wt. % cobalt, about 0.01 to about 5 wt. % tantalum, and about 0.1 to about 3.5 wt. % halogen.Type: GrantFiled: March 31, 1980Date of Patent: July 28, 1981Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: 4276152Abstract: Process for reforming a hydrocarbon charge under reforming conditions in a reforming zone wherein added sulfur is introduced into said zone to counteract excessive hydrocracking of said charge utilizing a catalyst consisting essentially of a minor proportion of platinum on a support and a minor proportion of iridium on a separate support.Type: GrantFiled: September 24, 1979Date of Patent: June 30, 1981Assignee: Mobil Oil CorporationInventors: William D. McHale, Hans-Juergen Schoennagel
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Patent number: 4276151Abstract: ZSM-5 type zeolites as more specifically defined hereinabove, are added to reforming catalysts in order to produce a new catalyst composition with high catalytic activity and excellent selectivity. These new catalysts when utilized in reforming naphtha, reduce the C.sub.1 plus C.sub.2 concentrations in reformer gas product, while increasing the C.sub.3 plus C.sub.4 concentrations.Type: GrantFiled: March 28, 1980Date of Patent: June 30, 1981Assignee: Mobil Oil CorporationInventors: Charles J. Plank, Edward J. Rosinski, Edwin N. Givens
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Patent number: 4268377Abstract: Hydrocarbons are converted by contacting them at hydrocarbon conversion conditions with a novel activated multimetallic catalytic composite comprising a combination of a catalytically effective amount of a pyrolyzed ruthenium carbonyl component with a porous carrier material containing a uniform dispersion of a catalytically effective amount of a platinum group component, which is maintained in the elemental metallic state during the incorporation and pyrolysis of the ruthenium carbonyl component, and of a rhenium component. In a highly preferred embodiment, this novel catalytic composite also contains a catalytically effective amount of a halogen component. The platinum group component, pyrolyzed ruthenium carbonyl component, rhenium component and optional halogen component are preferably present in the multimetallic catalytic composite in amounts, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % of the uniformly dispersed platinum group metal, about 0.01 to about 2 wt.Type: GrantFiled: October 5, 1979Date of Patent: May 19, 1981Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: 4268706Abstract: Dehydrogenatable hydrocarbons are dehydrogenated by contacting them, at dehydrogenation conditions, with a catalytic composite comprising a combination of catalytically effective amounts of a platinum group component, a cobalt component, and a tantalum component with a porous carrier material. A specific example of the nonacidic catalytic composite disclosed herein is a combination of a platinum group component, a cobalt component, a tantalum component, and an alkali or alkaline earth component with a porous carrier material in amounts sufficient to result in a composite containing about 0.01 to about 2 wt. % platinum group metal, about 0.05 to about 5 wt. % cobalt, about 0.01 to about 5 wt. % tantalum, and about 0.1 to about 5 wt. % alkali metal or alkaline earth metal.Type: GrantFiled: March 17, 1980Date of Patent: May 19, 1981Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: 4265786Abstract: A catalyst comprised of platinum, copper, selenium and halogen, composited with an inorganic oxide support or carrier, preferably alumina. The catalyst is one which possesses an intrinsically high activity, is stable and can operate at reforming conditions at high severities.Type: GrantFiled: June 29, 1979Date of Patent: May 5, 1981Assignee: Exxon Research & Engineering Co.Inventors: Paul E. Eberly, Jr., Charles H. Mauldin, William C. Baird, Jr.
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Patent number: 4263134Abstract: Catalyst compositions are provided comprising a refractory support, about 0.1 to about 2 percent by weight of platinum, about 0.1 to about 2 percent by weight of iridium and about 0.1 to about 5 weight percent of halogen where the platinum and iridium are contained on separate particles of said support. The relative weight ratio of the particles containing platinum and those containing iridium is between about 10:1 to about 1:10. The compositions are useful as hydrocarbon conversion catalysts and are especially applicable for use in catalyzing the reforming of naphtha petroleum fractions. There is also disclosed a reforming process conducted in the presence of hydrogen, under reforming conditions, in the presence of the above catalyst.Type: GrantFiled: January 17, 1980Date of Patent: April 21, 1981Assignee: Mobil Oil CorporationInventor: Hans J. Schoennagel
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Patent number: 4261810Abstract: Process for reforming a hydrocarbon charge under reforming conditions in a reforming zone containing a sulfur-sensitive metal containing reforming catalyst wherein over-cracking of the charge stock and excessive temperature rise in the reforming zone is suppressed by pre-conditioning the catalyst, prior to contact with the charge, with a reformate of specified octane number and aromatics content.Type: GrantFiled: March 17, 1980Date of Patent: April 14, 1981Assignee: Mobil Oil CorporationInventors: William D. McHale, Hans J. Schoennagel
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Patent number: 4261811Abstract: An improved process for the reforming of a hydrocarbon stream, which process comprises contacting said hydrocarbon stream under reforming conditions and in the presence of hydrogen with a catalyst which comprises platinum, rhenium, a small amount of palladium, and combined halogen on a refractory inorganic oxide, such as an alumina, and which has not been presulfided. The improvement comprises a rhenium-containing catalyst which has not been presulfided and which contains a small amount of palladium, i.e., about 0.05 wt. % to about 1 wt. % palladium. The feedstock being reformed can contain up to about 50 ppm sulfur.Type: GrantFiled: April 6, 1979Date of Patent: April 14, 1981Assignee: Standard Oil Company (Indiana)Inventors: Regis J. Pellet, Michael J. Gradassi, Ralph J. Bertolacini
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Patent number: 4256566Abstract: Hydrocarbons are converted by contacting them at hydrocarbon conversion conditions with a novel attenuated superactive multimetallic catalytic composite comprising a combination of a catalytically effective amount of a pyrolyzed rhenium carbonylcomponent with a porous carrier material containing a uniform dispersion of a catalytically effective amount of a platinum group component, which is maintained in the elemental metallic state during the incorporation and pyrolysis of the rhenium carbonyl component, and of a tin component. In a highly preferred embodiment, this novel catalytic composite also contains a catalytically effective amount of a halogen component. The platinum group component, pyrolyzed rhenium carbonyl component, tin component and optional halogen component are preferably present in the multimetallic catalytic composite in amounts, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal, about 0.01 to about 5 wt. % rhenium, about 0.005 to about 5 wt.Type: GrantFiled: August 20, 1979Date of Patent: March 17, 1981Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: 4256608Abstract: Hydrocarbons are converted by contacting them at hydrocarbon conversion conditions with a novel attenuated superactive multimetallic catalytic composite comprising a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of a catalytically effective amount of a platinum group component, which is maintained in the elemental metallic state during the incorporation and pyrolysis of the rhenium carbonyl component, and of an iron component. In a highly preferred embodiment, this novel catalytic composite also contains a catalytically effective amount of a halogen component. The platinum group component, pyrolyzed rhenium carbonyl component, iron component and optional halogen component are preferably present in the multimetallic catalytic composite in amounts, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal, about 0.01 to about 5 wt. % rhenium, about 0.Type: GrantFiled: October 1, 1979Date of Patent: March 17, 1981Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: 4251349Abstract: A fixed-bed catalytic reforming process in which on-stream operation is begun with the catalyst retention volume in the first reactor less than 99% full and additional catalyst is added to said reactor while on-stream.Type: GrantFiled: June 4, 1979Date of Patent: February 17, 1981Assignee: Chevron Research CompanyInventors: Charles S. McCoy, Robert J. Houston
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Patent number: 4251391Abstract: A catalyst constituted of a composite which includes hydrogenation-dehydrogenation components comprised of platinum and rhenium to which a small amount of copper is added to suppress hydrogenolysis, which is particularly acute in reforming during the early period of operation when the catalyst is placed on stream, i.e., at the startup of a reactor; and process of employing such catalyst in reforming.Type: GrantFiled: April 13, 1979Date of Patent: February 17, 1981Assignee: Exxon Research & Engineering Co.Inventors: Charles H. Mauldin, William C. Baird, Jr.
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Patent number: 4251392Abstract: A catalyst constituted of a composite which includes hydrogenation-dehydrogenation components comprised of palladium and platinum in total concentration ranging from about 0.2 to about 0.6 percent, in molar concentration of palladium:platinum ranging from about 1:1 to about 10:1 composited with an inorganic oxide support. In its preferred aspects the catalyst composite also contains rhenium, and more preferably a small amount of copper is added to suppress hydrogenolysis, which is particularly acute in reforming during the early period of operation when the catalyst is placed on stream, i.e., at the startup of a reactor; and process of employing such catalysts in reforming.Type: GrantFiled: April 30, 1979Date of Patent: February 17, 1981Assignee: Exxon Research & Engineering Co.Inventors: Charles H. Mauldin, William C. Baird, Jr.
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Patent number: 4250020Abstract: Hydrocarbons are converted by contacting them at hydrocarbon conversion conditions with a novel attenuated superactive multimetallic catalytic composite comprising a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of a catalytically effective amount of a platinum group component, which is maintained in the elemental metallic state during the incorporation and pyrolysis of the rhenium carbonyl component, and of a germanium component. In a highly preferred embodiment, this novel catalytic composite also contains a catalytically effective amount of a halogen component. The platinum group component, pyrolyzed rhenium carbonyl component, germanium component and optional halogen component are preferably present in the multimetallic catalytic composite in amounts, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal, about 0.01 to about 5 wt. % rhenium, about 0.Type: GrantFiled: July 16, 1979Date of Patent: February 10, 1981Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: 4246095Abstract: Hydrocarbons are converted by contacting them at hydrocarbon conversion conditions with a novel sulfided superactive multimetallic catalytic composite comprising a sulfided combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of catalytically effective amounts of a platinum group component, which is maintained in the elemental metallic state during the incorporation and pyrolysis of the rhenium carbonyl component. In a highly preferred embodiment, this novel catalytic composite also contains a catalytically effective amount of a halogen component. The platinum group component, pyrolyzed rhenium carbonyl component, sulfur component, and optional halogen component are preferably present in the multimetallic catalytic composite in amounts, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal, about 0.01 to about 5 wt. % rhenium, 0.001 to about 0.2 wt.Type: GrantFiled: June 4, 1979Date of Patent: January 20, 1981Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: 4245130Abstract: The present invention relates to a process for the hydrocatalytic treatment of hydrocarbon feedstock which is a mixture of alkyl aromatics containing at least one di- or polymethyl benzene and an alkyl benzene selected from ethyl-benzene, methyl ethyl-benzene and propylbenzene by contacting the mixture at 300.degree. to 500.degree. C., a pressure of 0 to 100 bars gauge and in the presence of hydrogen with a gallium containing aluminosilicate catalyst and recovering the desired product. The aluminosilicate has a silica to alumina ratio of between 10:1 and 100:1 on a molar bases. The xylene products are useful raw materials as such or for making the corresponding dicarboxylic acids.Type: GrantFiled: April 18, 1979Date of Patent: January 13, 1981Assignee: The British Petroleum Company LimitedInventors: John R. Jones, Dennis C. Wood
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Patent number: 4244809Abstract: A novel catalyst precursor which comprises a Group IV-B transition metal oxide deposited on the surface of an inorganic metal oxide support, preferably alumina; especially where the Group IV-B transition metal oxide is deposited on the support surface as discrete areas separated by areas of support surface which contain little, if any, of said Group IV-B transition metal oxide; and a catalyst composition comprised of a cluster of a Group IV-B transition metal oxide and a Group VIII metal preferably a Group VIII noble metal, deposited on an inorganic metal oxide support, particularly an alumina support, especially where the clusters are deposited on the surface of the support, as discrete clusters separated by areas of support surface which contain little, if any, of said Group VI-B transition metal oxide, or clusters of said Group IV-B and Group VIII metals.Type: GrantFiled: August 2, 1979Date of Patent: January 13, 1981Assignee: Exxon Research & Engineering Co.Inventor: Kenneth S. Wheelock
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Patent number: 4243515Abstract: A process for reforming a naphtha feedstock is disclosed. The reforming process is effected at reforming conditions in contact with a catalyst comprising a platinum group metal component and a Group IV-A metal component composited with an alumina support wherein said support is prepared by admixing an alpha alumina monohydrate with an aqueous ammoniacal solution having a pH of at least about 7.5 to form a stable suspension. A salt of a strong acid, e.g., aluminum nitrate, is commingled with the suspension to form an extrudable paste or dough. On extrusion, the extrudate is dried and calcined to form said alumina support.Type: GrantFiled: May 24, 1979Date of Patent: January 6, 1981Assignee: UOP Inc.Inventors: Roy T. Mitsche, George N. Pope
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Patent number: 4243826Abstract: Dehydrogenatable hydrocarbons are dehydrogenated by contacting them, at dehydrogenation conditions, with a nonacidic catalytic composite comprising a combination of catalytically effective amounts of platinum group component, a cobalt component, a cadmium component, and an alkali or alkaline earth component with a porous carrier material in amounts sufficient to result in a composite containing, on an elemental basis, about 0.01 to about 2 wt. % platinum group metal, about 0.05 to about 5 wt. % cobalt, about 0.01 to about 5 wt. % cadmium and about 0.1 to about 5 wt. % alkali metal or alkaline earth metal.Type: GrantFiled: August 16, 1979Date of Patent: January 6, 1981Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: 4243516Abstract: Catalytic hydroreforming process, particularly for the production of gasoline of high clear octane number, comprising hydrogenating a hydrocarbon charge in the presence of a catalyst containing an alumina carrier, a first metal selected from ruthenium, iridium and rhodium, a second metal, different from the first metal, and selected from ruthenium, palladium and osmium, a third metal consisting of indium, and a halogen.Type: GrantFiled: December 6, 1977Date of Patent: January 6, 1981Assignee: Societe Francaise des Produits pour CatalyseInventors: Germain Martino, Jean Miquel
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Patent number: 4241231Abstract: Isomerizable light paraffinic hydrocarbon feeds are isomerized in an improved process using a particular super-chlorided reforming catalyst under isomerizing conditions. A chloride source in the feed stabilizes the catalyst. This process provides for a material octane improvement of the feed without excessive loss thereof to normally gaseous hydrocarbons.Type: GrantFiled: October 2, 1978Date of Patent: December 23, 1980Assignee: Chevron Research CompanyInventors: Kirk R. Gibson, Robert L. Jacobson, Manfred J. Michlmayr
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Patent number: 4239652Abstract: Catalyst for a process of hydroreforming or aromatic hydrocarbon production, comprising an alumina carrier, at least one noble metal of the platinum family, antimony, a metal selected from gallium, indium and thallium and halogen, said catalyst being used in a series of successive reaction zones as a moving bed, transferred from one reaction zone to the next, from the last reaction zone to a regeneration zone and from the latter to the first reaction zone, said process being preferably conducted at a temperature from 510.degree. to 600.degree. C. and under a pressure from 1 to 18 kg/cm.sup.2.Type: GrantFiled: June 29, 1979Date of Patent: December 16, 1980Assignee: Institut Francais du PetroleInventors: Jean-Francois Le Page, Germain Martino, Jean Miquel
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Patent number: 4238372Abstract: An improved catalyst, having a reduced fouling rate when used in a catalytic reforming process, said catalyst comprising platinum disposed on an alumina support wherein the alumina support is obtained by removing water from aluminum hydroxide produced as a by-product from a Ziegler higher alcohol synthesis reaction, and wherein the alumina is calcined at a temperature of 1100.degree.-1400.degree. F. so as to have a surface area of 165 to 215 square meters per gram.Type: GrantFiled: May 4, 1979Date of Patent: December 9, 1980Assignee: Chevron Research CompanyInventors: Waldeen C. Buss, Harris E. Kluksdahl
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Patent number: 4235705Abstract: Hydrocarbons are converted by contacting them at hydrocarbon conversion conditions with a novel attenuated superactive multimetallic catalytic composite comprising a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of a catalytically effective amount of a platinum group component, which is maintained in the elemental metallic state during the incorporation of the rhenium carbonyl component, and of a bismuth component. In a highly preferred embodiment, this novel catalytic composite also contains a catalytically effective amount of a halogen component. The platinum group component, pyrolyzed rhenium carbonyl component, bismuth component and optional halogen component are preferably present in the multimetallic catalytic composite in amounts, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal, about 0.01 to about 5 wt. % rhenium, about 0.Type: GrantFiled: December 15, 1978Date of Patent: November 25, 1980Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: 4231898Abstract: A process for the synthesis of copper-containing catalysts by preforming an inorganic oxide support, or carrier, preferably an alumina support, impregnating said support with a copper-containing halogen acid solution, neutralizing said halogen acid treated copper-containing support, and then impregnating said neutralized support with the desired hydrogenation-dehydrogenation components.Type: GrantFiled: June 29, 1979Date of Patent: November 4, 1980Assignee: Exxon Research & Engineering Co.Inventors: Charles H. Mauldin, William C. Baird, Jr.
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Patent number: 4227993Abstract: Catalysts particularly useful for hydroreforming and isomerization of hydrocarbons formed of a refractory mineral oxide carrier having a halogen in combined form and the following metals in free or combined state:(a) A metal from the platinum group (0.02 to 2%);(b) tin (0.02 to 2%); and(c) at least one metal selected from the group of scandium, yttrium, thorium, uranium, and the rare earths metals (0.01 to 5%)--said percentages being based upon the total weight of the catalyst, said catalyst preferably having platinum and chlorine. Also the use of said catalyst in the aforementioned hydrotreatments.Type: GrantFiled: March 6, 1979Date of Patent: October 14, 1980Assignee: Compagnie Francaise de RaffinageInventors: Philippe Engelhard, Georges Szabo, Joseph E. Weisang
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Patent number: 4227026Abstract: Dehydrogenatable hydrocarbons are dehydrogenated by contacting them, at dehydrogenation conditions, with a catalytic composite comprising a combination of catalytically effective amounts of a platinum group component, a cobalt component, and a uranium component with a porous carrier material. A specific example of the nonacidic catalytic composite disclosed herein is a combination of a platinum group component, a cobalt component, a uranium component, and an alkali or alkaline earth component with a porous carrier material in amounts sufficient to result in a composite containing about 0.01 to about 2 wt. % platinum group metal, about 0.05 to about 5 wt. % cobalt, about 0.1 to about 10 wt. % uranium and about 0.1 to about 5 wt. % alkali metal or alkaline earth metal.Type: GrantFiled: August 10, 1978Date of Patent: October 7, 1980Assignee: UOP Inc.Inventors: John F. Flagg, George J. Antos
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Patent number: 4222854Abstract: Production of motor gasoline and a BTX-enriched reformate by fractionating a naphtha feedstock into a mid-boiling BTX-precursor fraction, a relatively high-boiling fraction and a relatively low-boiling fraction; catalytically reforming the BTX-precursor fraction in a first reforming zone; combining the relatively high-boiling and low-boiling fractions and catalytically reforming the combined fractions in a second reforming zone.Type: GrantFiled: May 23, 1979Date of Patent: September 16, 1980Assignee: Chevron Research CompanyInventors: Frederick H. Vorhis, Jr., Keith C. Bishop, III