With Halogen Containing Additive Patents (Class 208/139)
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Patent number: 4636298Abstract: A hydrocarbon conversion process is disclosed wherein the alkanes are contacted with a catalyst containing a metallic oxide support and a Group VIII metal, and with a catalyst containing a large-pore zeolite, a Group VIII metal, and an alkaline earth metal.Type: GrantFiled: December 7, 1984Date of Patent: January 13, 1987Assignee: Chevron Research CompanyInventors: Waldeen C. Buss, Thomas R. Hughes
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Patent number: 4629551Abstract: A novel catalytic composite for the conversion of hydrocarbons is disclosed. The catalytic composite comprises a refractory inorganic oxide, a first uniform dispersion of a platinum component and a rhenium component, and a second dispersion of an indium component thereover. The composite further comprises a halogen component and a sulfur component. In addition to a novel catalytic composite there is also disclosed a method of preparing the composite and a novel process for the use of the composite.Type: GrantFiled: September 30, 1985Date of Patent: December 16, 1986Assignee: UOP Inc.Inventors: George J. Antos, Li Wang
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Patent number: 4594334Abstract: A novel catalytic composite for the conversion of hydrocarbons is disclosed. The catalytic composite comprises a refractory inorganic oxide, a first uniform dispersion of a platinum component and a rhenium component, and a second dispersion of an indium component thereover. The composite further comprises a halogen component and a sulfur component. In addition to a novel catalytic composite there is also disclosed a method of preparing the composite and a novel process for the use of the composite.Type: GrantFiled: February 19, 1985Date of Patent: June 10, 1986Assignee: UOP Inc.Inventors: George J. Antos, Li Wang
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Patent number: 4592829Abstract: A process for the use of such sorbent, or catalyst, to effectively remove sulfur from naphthas at temperatures above about 350.degree. F. without the significant production, if any, of PNA's. The invention embodies a particulate mass of a sorbent, or catalyst, comprised of nickel in concentration ranging from about 10 percent to about 70 percent, preferably from about 20 percent to about 50 percent, calculated as metallic nickel based on the total weight of the sorbent, iron in concentration ranging from about 1 percent to about 15 percent, preferably from about 2 percent to about 10 percent, calculated as metallic iron based on the total weight of the sorbent, or catalyst composition and a porous, refractory inorganic oxide such as silica, alumina, clays, or mixture thereof; preferably alumina, with which the nickel and iron are composited.Type: GrantFiled: December 26, 1984Date of Patent: June 3, 1986Assignee: Exxon Research and Engineering Co.Inventor: Paul E. Eberly, Jr.
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Patent number: 4588497Abstract: The invention concerns a catalytic reforming process, operated in the presence of a catalyst containing a carrier formed in major part of alumina and an active phase, the alumina carrier being obtained by admixing an alumina binding agent with a charge of alumina base.At least a portion of the active phase or its precursor is introduced during the manufacture of the carrier, either in the binding agent or in the charge, during the admixture of the charge with a binding agent.Type: GrantFiled: December 7, 1984Date of Patent: May 13, 1986Assignee: Societe Francais des Produits pour Catalyse Pro-Catalyse chez Institut Francais du PetroleInventors: Gilbert Blanchard, Jean-Pierre Franck
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Patent number: 4584089Abstract: The 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, preferably platinum, deposed on a solid catalyst support material providing acidic catalytic sites, said Component B consisting essentially of a crystalline borosilicate molecular sieve, and said catalyst having been prepared by thoroughly and intimately blending finely-divided particles of said Components A and B to provide a thoroughly-blended composite.The catalyst can be employed suitably in hydrocarbon conversion processes. In particular, the catalyst can be employed in a process for the reforming of a hydrocarbon stream. More particularly, the catalyst can be used as the second catalyst in a two-catalyst reforming process.Type: GrantFiled: February 6, 1985Date of Patent: April 22, 1986Assignee: Standard Oil Company (Indiana)Inventors: Eugene E. Unmuth, Louis C. Gutberlet
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Patent number: 4579648Abstract: Paraffinic naphthas, the C.sub.8.sup.+ aromatics content of which is below about 5 wt. % can be reformed to provide higher C.sub.5.sup.+ LV% yields by blending C.sub.8.sup.+ aromatics with said naphtha composition to raise the C.sub.8.sup.+ aromatic concentration above such level. Preferably the addition of the C.sub.8.sup.+ aromatics to such blend is sufficient to raise the C.sub.8.sup.+ aromatics level of the blend to concentrations above about 5 wt. %, preferably to concentrations ranging from about 5 wt. % to about 20 wt. %.Type: GrantFiled: September 24, 1984Date of Patent: April 1, 1986Assignee: Exxon Research and Engineering Co.Inventor: William C. Baird, Jr.
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Patent number: 4541915Abstract: A start-up procedure wherein a halogenated rhenium-containing catalyst, to improve its performance in reforming naphtha feeds, is contacted with water, added with the hydrogen and said feed. During the start-up period, preferably on initiation of the start-up period after aromatics production has begun, a naphtha feed, hydrogen and water are passed cocurrently through the several reactors of a reforming unit and reacted over the halogenated rhenium-containing catalyst. Water is generally added with the naphtha and hydrogen, preferably to the initial reactor of the series of reactors of the reforming unit, in concentration ranging from about 100 vppm of hydrogen to about 10,000 vppm of hydrogen, preferably from about 100 vppm to about 5000 vppm of hydrogen.Type: GrantFiled: October 1, 1984Date of Patent: September 17, 1985Assignee: Exxon Research and Engineering Co.Inventors: William C. Baird, Jr., Charles H. Mauldin
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Patent number: 4539307Abstract: A metal catalyst preferably comprised of a platinum/rhenium metal combination, supported on alumina is activated for the reforming of hydrocarbon feedstock, by being contacted with an oxygen-containing gas at a temperature sufficient to oxidize the metal catalyst and then being reduced sequentially by contacting the catalyst with a stream of hydrogen at about 650.degree. to about 750.degree. F. for a first period of time and then at about 900.degree. to about 1000.degree. F. for a second period of time, followed by sulfiding of the sequentially reduced catalyst. The sequential reduction procedure increases the selectivity of the reforming catalyst and results in increased C.sub.5.sup.+ liquid product yields.Type: GrantFiled: March 12, 1984Date of Patent: September 3, 1985Assignee: Engelhard CorporationInventor: Soni O. Oyekan
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Patent number: 4529505Abstract: A new catalyst for converting hydrocarbons, especially for reforming hydrocarbons, is disclosed. Also disclosed is a hydrocarbon conversion process using the catalyst as well as a method for making the catalyst. The catalyst comprises a platinum group component, a tin component, an indium component and a halogen component with a porous support material, wherein there is about 0.6 or more wt. %, on an elemental basis, indium present. In a preferred embodiment of the invention the catalyst is utilized in the catalytic reforming of hydrocarbons boiling in the gasoline range to produce a high octane reformate suitable for gasoline blending or a high aromatics content reformate suitable for use as a petrochemical feedstock.Type: GrantFiled: August 13, 1984Date of Patent: July 16, 1985Assignee: UOP Inc.Inventors: Delmar W. Robinson, Russell W. Johnson, Mark D. Moser
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Patent number: 4522935Abstract: A new catalyst for converting hydrocarbons, especially for reforming hydrocarbons, is disclosed. Also disclosed is a hydrocarbon conversion process using the catalyst as well as a method for making the catalyst. The catalyst comprises a platinum group component, a tin component, an indium component and a halogen component with a porous support material, wherein the atomic ratio of indium to platinum group component is more than about 1.14. In a preferred embodiment of the invention the catalyst is utilized in the catalytic reforming of hydrocarbons boiling in the gasoline range to produce a high octane reformate suitable for gasoline blending or a high aromatics content reformate suitable for use as a petrochemical feedstock.Type: GrantFiled: October 7, 1983Date of Patent: June 11, 1985Assignee: UOP Inc.Inventors: Delmar W. Robinson, Russell W. Johnson, Mark D. Moser
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Patent number: 4518708Abstract: In a process for treatment of a fresh iridium-containing catalyst, the improvement consists of a three step procedure in sequence including treatment with oxygen, treatment with hydrogen chloride, and treatment with a reducing agent such as hydrogen.Type: GrantFiled: March 7, 1984Date of Patent: May 21, 1985Assignee: Mobil Oil CorporationInventors: Sowmithri Krishnamurthy, George R. Landolt, Hans J. Schoennagel
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Patent number: 4517076Abstract: A process wherein a coked, deactivated iridium-containing catalyst can be reactivated in a sequence of burn steps, inclusive of a low temperature primary burn step and a subsequent high temperature burn step. In (1) the low temperature primary burn step (i) the chloride level of the catalyst is raised and the catalyst passivated by contact with a hydrogen chloride containing gas, (ii) and coke is then burned from the catalyst by contact with a gas which contains hydrogen chloride at level sufficient to suppress iridium agglomeration at a level of oxygen providing burn temperatures which do not exceed about 425.degree. C., this being sufficient to remove a preponderance of the coke without agglomeration of the iridium component.Type: GrantFiled: August 24, 1984Date of Patent: May 14, 1985Assignee: Exxon Research and Engineering Co.Inventors: Joseph P. Boyle, John B. Gilbert
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Patent number: 4514284Abstract: A process wherein a coked, deactivated iridium-containing catalyst can be reactivated in a sequence of burn steps, inclusive of a low temperature primary burn step and a subsequent high temperature burn step. In (1) the low temperature primary burn step (i) the chloride level of the catalyst is raised and the catalyst passivated by contact with a hydrogen chloride containing gas, (ii) and coke is then burned from the catalyst by contact with a gas which contains hydrogen chloride at level sufficient to suppress iridium agglomeration at a level of oxygen providing burn temperatures which do not exceed about 425.degree. C., this being sufficient to remove a preponderance of the coke without agglomeration of the iridium component.Type: GrantFiled: August 24, 1984Date of Patent: April 30, 1985Assignee: Exxon Research and Engineering Co.Inventors: Tom Wairegi, Joseph P. Boyle, John B. Gilbert
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Patent number: 4493764Abstract: 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 and rhenium on a separate support. A process for reforming a charge stock, such as naphtha, utilizing such catalyst is also provided.Type: GrantFiled: June 8, 1984Date of Patent: January 15, 1985Assignee: Mobil Oil CorporationInventors: Charles T. Kresge, Sowmithri Krishnamurthy, William D. McHale
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Patent number: 4487848Abstract: A new catalyst for converting hydrocarbons, especially for reforming hydrocarbons, is disclosed. Also disclosed is a hydrocarbon conversion process using the catalyst as well as a method for making the catalyst. The catalyst comprises a platinum group component, a tin component, an indium component and a halogen component with a porous support material, wherein there is about 0.6 or more wt. %, on an elemental basis, indium present. In a preferred embodiment of the invention the catalyst is utilized in the catalytic reforming of hydrocarbons boiling in the gasoline range to produce a high octane reformate suitable for gasoline blending or a high aromatics content reformate suitable for use as a petrochemical feedstock.Type: GrantFiled: June 2, 1983Date of Patent: December 11, 1984Assignee: UOP Inc.Inventors: Delmar W. Robinson, Russell W. Johnson, Mark D. Moser
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Patent number: 4483767Abstract: A new catalyst composition for converting hydrocarbons is disclosed. Also disclosed is a method for making the catalyst. The catalyst comprises a platinum group component and a phosphorous component with a porous support material. The catalyst is made by compositing a platinum group component with a porous support material and then contacting that composite with phosphorus or a compound of phosphorus. In a preferred embodiment of the invention a catalyst comprising platinum, phosphorus and chlorine with alumina is utilized in the catalytic reforming of hydrocarbons boiling in the gasoline range to produce a high octane reformate suitable for gasoline blending or a high aromatics content reformate suitable as a petrochemical feedstock.Type: GrantFiled: April 9, 1984Date of Patent: November 20, 1984Assignee: UOP Inc.Inventors: George J. Antos, Tai-Hsiang Chao
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Patent number: 4482449Abstract: The catalyst comprises a physical particle-form mixture of a Componet A, a Component B, and a Component C, said Component A comprising at least one Group VIII noble metal, preferably platinum, deposed on a solid catalyst support material providing acidic catalytic sites, said Component B comprising a small amount of a non-noble metal of Group VIII selected from cobalt, nickel, and mixtures thereof, preferably cobalt, on a solid catalyst support material providing acidic catalytic sites, said Component C comprising a small amount of gallium deposed on a solid catalyst support material providing acidic catalytic sites, and said catalyst having been prepared by thoroughly and intimately blending finely-divided particles of said Component A, B, and C to provide a thoroughly-blended composite.The catalyst can be employed suitably in a hydrocarbon conversion process.Type: GrantFiled: March 30, 1984Date of Patent: November 13, 1984Assignee: Standard Oil Company (Indiana)Inventors: Cecelia M. Sorrentino, Regis J. Pellet, Ralph J. Bertolacini
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Patent number: 4480048Abstract: New catalysts, useful for performing hydrocarbons conversions such as reforming, production of aromatics, isomerization of paraffinic and aromatic hydrocarbons, hydrocracking, hydrodealkylation and steam-dealkylation, are formed of a carrier such as alumina and active elements comprising a noble metal of the platinum family, titanium, at least one metal selected from manganese, technetium and rhenium, and halogen, said catalysts being advantageously used as a moving bed.Type: GrantFiled: May 24, 1983Date of Patent: October 30, 1984Assignee: Societe Francaise des Produits Pour Catalyse Pro-Catalyse chez Institute Francais Du PetroleInventors: Jean-Paul Bournonville, Jean Miquel
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Patent number: 4469812Abstract: The catalyst comprises a physical particle-form mixture of a Component A, a Component B, and a Component C, said Component A comprising at least one Group VIII noble metal, preferably platinum, deposed on a solid catalyst support material providing acidic catalytic sites, said Component B comprising a small amount of a non-noble metal of Group VIII selected from cobalt, nickel, and mixtures thereof, preferably cobalt, on a solid catalyst support material providing acidic catalytic sites, said Component C comprising a small amount of gallium deposed on a solid catalyst support material providing acidic catalytic sites, and said catalyst having been prepared by thoroughly and intimately blending finely-divided particles of said Components A, B, and C to provide a thoroughly-blended composite.The catalyst can be employed suitably in a hydrocarbon conversion process.Type: GrantFiled: September 16, 1983Date of Patent: September 4, 1984Assignee: Standard Oil Company (Indiana)Inventors: Cecelia M. Sorrentino, Regis J. Pellet, Ralph J. Bertolacini
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Patent number: 4463104Abstract: A new catalyst composition for converting hydrocarbons is disclosed. Also disclosed is a method for making the catalyst. The catalyst comprises a platinum group component and a phosphorous component with a porous support material. The catalyst is made by compositing a platinum group component with a porous support material and then contacting that composite with phosphorus or a compound of phosphorus. In a preferred embodiment of the invention a catalyst comprising platinum, phosphorus and chlorine with alumina is utilized in the catalytic reforming of hydrocarbons boiling in the gasoline range to produce a high octane reformate suitable for gasoline blending or a high aromatics content reformate suitable as a petrochemical feedstock.Type: GrantFiled: August 16, 1982Date of Patent: July 31, 1984Assignee: UOP Inc.Inventors: George J. Antos, Tai-Hsiang Chao
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Patent number: 4460457Abstract: In a process for reforming light naphtha with a bimetallic or multimetallic reforming catalyst, such as a platinum-rhenium-halogen catalyst, at conventional reforming conditions, wherein the catalyst is used for an extended continuous on-stream period, the aromatics selectivity of the catalyst is rapidly increased by contacting the naphtha and hydrogen with the catalyst at increased severity operating conditions, such as a reduced pressure less than 90% of the normal reforming pressure, during an initial portion of the on-stream period.Type: GrantFiled: August 18, 1980Date of Patent: July 17, 1984Assignee: Chevron Research CompanyInventors: Kirk R. Gibson, Robert J. Houston, Thomas R. Hughes, Robert L. Jacobson
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Patent number: 4440628Abstract: A process wherein, in a series of reforming zones, or reactors, each of which contains a bed, or beds of catalyst, the catalyst in the rearward most reforming zones is constituted of a high rhenium, platinum rhenium catalyst, viz., a catalyst comprising supported platinum and a relatively high concentration of rhenium relative to the platinum, and preferably the catalyst in the forwardmost reforming zone, or reactor of the series, is constituted of platinum, or platinum and a relatively low concentration of rhenium relative to the platinum. At least 30 percent, preferably from 40 percent to about 90 percent, of the rearward most reactors of the unit, or even 100 percent, based on the total weight of the catalyst in all of the reactors of the unit, contain a high rhenium, platinum rhenium catalyst, the weight ratio of rhenium:platinum being at least about 1.5:1.Type: GrantFiled: April 6, 1983Date of Patent: April 3, 1984Assignee: Exxon Research and Engineering Co.Inventors: William E. Winter, Gerald E. Markley
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Patent number: 4440626Abstract: A process wherein, in a series of reforming zones, employing one or a series of reactors, each of which contains a bed, or beds of catalyst, the catalyst in the rearward most reforming zones is constituted of supported platinum and a relatively high concentration of rhenium, and the catalyst in the forward most reforming zone is constituted of platinum, or platinum and a relatively low concentration of a promoter metal, especially rhenium. In the rearward reaction zones, at least 40 percent, and preferably from 40 percent to about 90 percent, based on the total weight of catalyst in the reactor, or reactors of the unit, is constituted of a rhenium promoted platinum catalyst, the weight ratio of rhenium:plantinum of which at least about 1.5:1, a preferably 2:1, or greater. The beds of catalyst are contacted with a hydrocarbon or naphtha feed, and hydrogen, at reforming conditions to produce a hydrocarbon, or naphtha product of improved octane, and the product is withdrawn.Type: GrantFiled: April 6, 1983Date of Patent: April 3, 1984Assignee: Exxon Research and Engineering Co.Inventors: William E. Winter, Gerald E. Markley
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Patent number: 4440627Abstract: A process wherein, in a series of reforming zones, employing one or a series of reactors, each of which contains a bed, or beds of catalyst, the catalyst in the rearward most reforming zones is constituted of supported platinum and a relatively high concentration of rhenium, and the catalyst in the forward most reforming zone is constituted of platinum, or platinum and a relatively low concentration of a promoter metal, especially rhenium. In the rearward reaction zones, at least 40 percent, and preferably from 40 percent to about 90 percent, based on the total weight of catalyst in the reactor, or reactors of the unit, is constituted of a rhenium promoted platinum catalyst, the weight ratio of rhenium:platinum of which at least about 1.5:1, and preferably 2:1, or greater. The beds of catalyst are contacted at start-of-run temperatures ranging from about 875.degree. F. to about 935.degree. F.Type: GrantFiled: April 6, 1983Date of Patent: April 3, 1984Assignee: Exxon Research and Engineering Co.Inventor: Gerald E. Markley
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Patent number: 4433191Abstract: A novel process for the efficient, selective and steady conversion of n-alkenes, such as n-butylenes, to their skeletal isomers is disclosed. Catalysts and catalytic conditions are also disclosed.Type: GrantFiled: September 30, 1982Date of Patent: February 21, 1984Assignee: Engelhard CorporationInventors: Antonio E. Eleazar, Ronald M. Heck, Joseph C. Dettling, Yiu-Kwan Lui
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Patent number: 4430517Abstract: This invention relates to a new catalyst for converting hydrocarbons. The catalyst comprises a platinum group component, a Group IVA component, especially tin, an alkali or alkaline earth component, more than 0.2 weight %, calculated on an elemental basis, of a halogen component and a porous carrier material, wherein the atomic ratio of the alkali or alkaline earth component to the platinum group component is more than 10. The catalyst is particularly useful for dehydrogenating paraffins having from 2 to 5 or more carbon atoms to the corresponding mono-olefins, or for dehydrogenating mono-olefins having from 3 to 5 or more carbon atoms to the corresponding di-olefins.Type: GrantFiled: March 22, 1983Date of Patent: February 7, 1984Assignee: UOP Inc.Inventors: Tamotsu Imai, Chi-Wen Hung
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Patent number: 4425222Abstract: A process wherein, in a series of reforming zones, or onstream reactors, each of which contains a bed, or beds of catalyst, the catalyst in the leading reforming zones is constituted of supported platinum and a relatively low concentration of rhenium, and the catalyst in the last reforming zone, or reactor of the series, is constituted of platinum and a relatively high concentration of rhenium, and a swing reactor, also containing a supported platinum and rhenium catalyst, is manifolded so that it can be substituted for any one of the onstream reactors of the unit. The entry side, or upper portion of the swing reactor contains a catalyst constituted of platinum and a relatively low concentration of rhenium, and the exit side, or lower portion of the reactor contains a catalyst constituted of platinum and a relatively high concentration of rhenium.Type: GrantFiled: April 6, 1983Date of Patent: January 10, 1984Assignee: Exxon Research and Engineering Co.Inventor: George A. Swan
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Patent number: 4415441Abstract: A process for reforming, with hydrogen, a naphtha in a reforming reactor provided with a rhenium promoted platinum catalyst over which the naphtha is contacted and reacted at reforming conditions to produce a C.sub.5.sup.+ liquid product of improved octane. The catalyst is contacted, on initiation of the reforming reaction, with a maximum of about 75 percent of the rate of hydrogen required for maintaining the optimum C.sub.5.sup.+ liquid yield over the length of the operating cycle. The hydrogen rate is increased not later than the time of line-out of the C.sub.5.sup.+ liquid yield to that required to maintain said optimum C.sub.5.sup.+ liquid yield.Type: GrantFiled: September 13, 1982Date of Patent: November 15, 1983Assignee: Exxon Research and Engineering Co.Inventors: Gerald E. Markley, William E. Winter
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Patent number: 4404094Abstract: A catalyst pretreat procedure wherein a copper, selenium, or sulfur promoted platinum-iridium catalyst, preferably a platinum-iridium-selenium catalyst, is contacted with dry hydrogen at a temperature ranging from about 600.degree. F.-1000.degree. F., at a hydrogen partial pressure ranging from about 1-40 atmospheres at a flow rate sufficient to maintain the moisture level below about 500 parts per million parts by volume of gas in the exit gas stream, for a period of time ranging at least about 16 hours, preferably at least 16 hours to about 200 hours. Treatment of these catalysts at such conditions will provide a selectivity advantage ranging from about 1 to 2 (LV%) higher than a catalyst otherwise similar but not pretreated in this manner.Type: GrantFiled: July 2, 1982Date of Patent: September 13, 1983Assignee: Exxon Research and Engineering Co.Inventors: Paul E. Eberly, Jr., William C. Baird, Jr.
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Patent number: 4401557Abstract: Reforming process operated in the presence of a catalyst comprising a carrier, platinum, rhodium or osmium, an additional metal consisting of chromium, tungsten, molybdenum, manganese, rhenium, germanium, tin, gallium, indium, thallium, thorium, cerium, samarium, lanthanum, zinc, cadmium, titanium or zirconium, and halogen.Type: GrantFiled: September 24, 1975Date of Patent: August 30, 1983Assignee: Societe Francaise Des Produits Pour CatalyseInventors: Bernard Juguin, Germain Martino, Jean Miquel
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Patent number: 4401558Abstract: 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 one or more Group VIII noble metals and a combined halogen deposed on a refractory inorganic oxide and said Component B comprising a metal from Group IVB or Group VB of the Periodic Table of Elements and a combined halogen deposed on a refractory inorganic oxide. Such catalyst is suitable for use in a hydrocarbon conversion reaction zone.The catalyst can be employed in a process for the reforming of a hydrocarbon stream, which process comprises contacting said stream in a reaction zone under reforming conditions and in the presence of hydrogen with said catalyst. The catalyst is not presulfided. A preferred process comprises contacting a hydrocarbon stream that contains a substantial amount of sulfur.Type: GrantFiled: November 5, 1981Date of Patent: August 30, 1983Assignee: Standard Oil Company (Indiana)Inventors: Regis J. Pellet, Ralph J. Bertolacini, Donna L. Lysholm
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Patent number: 4379076Abstract: A catalyst comprised of platinum, iridium, 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: December 1, 1980Date of Patent: April 5, 1983Assignee: Exxon Research and Engineering Co.Inventors: Paul E. Eberly, Jr., Charles H. Mauldin, William C. Baird, Jr.
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Patent number: 4375405Abstract: A hydrocarbon reforming process is controlled by manipulating the addition of halogen to the reforming catalyst responsive to an isopentane signal representative of the isopentane content in the reformate.Type: GrantFiled: October 24, 1980Date of Patent: March 1, 1983Assignee: Phillips Petroleum CompanyInventor: Robert M. Garvert
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Patent number: 4370224Abstract: A catalyst comprised of platinum, iridium, 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 2, 1981Date of Patent: January 25, 1983Assignee: Exxon Research and Engineering Co.Inventors: Paul E. Eberly, Jr., Charles H. Mauldin, William C. Baird, Jr.
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Patent number: 4367137Abstract: Hydrocarbons are converted by contacting them at hydrocarbon conversion conditions with an acidic multimetallic catalytic composite comprising a combination of catalytically effective amounts of a platinum group component, a cobalt component, a tin component, a phosphorus component and a halogen component with a porous carrier material. The platinum group, cobalt, tin, phosphorus 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. % tin, about 0.01 to about 5 wt. % phosphorus and about 0.1 to about 3.5 wt. % halogen. A specific example of the type of hydrocarbon conversion process disclosed is a process for the catalytic reforming of a low-octane gasoline fraction wherein the gasoline fraction and a hydrogen stream are contacted with the acidic multimetallic catalyst disclosed herein at reforming conditions.Type: GrantFiled: November 23, 1981Date of Patent: January 4, 1983Assignee: UOP Inc.Inventors: George J. Antos, Tai-Hsiang Chao
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Patent number: 4363721Abstract: These catalysts comprise:A refractory oxide-mineral carrier;a halogen element, present in combined form; and,in free or combined form,(a) a platinum-group metal, and(b) tin.They are characterized in that they contain, moreover, a metal from groups Ia and IIa of the periodic table of the elements.Specifically, said metal from groups Ia and IIa may be sodium, lithium, potassium, calcium or barium.Type: GrantFiled: December 14, 1981Date of Patent: December 14, 1982Assignee: Compagnie Francaise de RaffinageInventors: Philippe Engelhard, Georges Szabo
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Patent number: 4361479Abstract: 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 pyrolyzed ruthenium carbonyl component, a rhenium component, and a halogen component with a porous carrier material. The platinum group, ruthenium, rhenium 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 2 wt. % carbonyl-derived ruthenium, about 0.01 to about 5 wt. % rhenium, and about 0.1 to about 3.5 wt. % halogen.Type: GrantFiled: September 11, 1981Date of Patent: November 30, 1982Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: 4356081Abstract: A new reforming process employs a new rhenium-platinum catalytic composite having a rhenium to platinum weight ratio in the range of not less than 2 to about 5, whereby longer relative cycle length is obtained when reforming a naphtha having less than about 0.5 ppm by weight of sulfur than if the rhenium-platinum ratio is outside of such range.Type: GrantFiled: April 28, 1980Date of Patent: October 26, 1982Inventors: James P. Gallagher, Robert M. Yarrington
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Patent number: 4353814Abstract: 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 one or more Group VIII noble metals and a combined halogen deposed on a refractory inorganic oxide and said Component B comprising a metal from Group IVB or Group VB of the Periodic Table of Elements and a combined halogen deposed on a refractory inorganic oxide. Such catalyst is suitable for use in a hydrocarbon conversion reaction zone.The catalyst can be employed in a process for the reforming of a hydrocarbon stream, which process comprises contacting said stream in a reaction zone under reforming conditions and in the presence of hydrogen with said catalyst. The catalyst is not presulfided. A preferred process comprises contacting a hydrocarbon stream that contains a substantial amount of sulfur.Type: GrantFiled: December 28, 1979Date of Patent: October 12, 1982Assignee: Standard Oil Company (Indiana)Inventors: Regis J. Pellet, Ralph J. Bertolacini, Donna L. Lysholm
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Patent number: 4349433Abstract: 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: March 25, 1981Date of Patent: September 14, 1982Assignee: Mobil Oil CorporationInventor: Hans J. Schoennagel
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Patent number: 4342644Abstract: 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 + aromatics, and reduce the cooking 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: April 22, 1981Date of Patent: August 3, 1982Assignee: Exxon Research & Engineering Co.Inventors: Charles H. Mauldin, William C. Baird, Jr.
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Patent number: 4342643Abstract: A shaped catalyst and methods of use are provided. The catalyst has substantially the shape of a cylinder having a plurality of longitudinal channels extending radially from the circumference of the cylinder and defining protrusions therebetween, said protrusions having a maximum width greater than the maximum width of the channels.Type: GrantFiled: June 5, 1981Date of Patent: August 3, 1982Assignee: Chevron Research CompanyInventor: Chwan P. Kyan
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Patent number: 4337146Abstract: 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, an iron 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, iron 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. % iron and about 0.1 to about 3.5 wt. % halogen.Type: GrantFiled: December 8, 1980Date of Patent: June 29, 1982Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: 4331825Abstract: Supported ruthenium metal catalysts prepared by reduction of carbonyl compounds give improved yields of methane in the hydro-cracking of hydrocarbons, especially alkanes and alkyl aromatics. Alkanes may be cracked to methane at low temperature (200.degree.-300.degree. C.) and the de-alkylation of alkyl benzenes may be controlled sufficiently to allow removal of isomers e.g. ethylbenzene from xylenes. The novel catalysts comprise ruthenium clusters having average dimensions below 20 A.Type: GrantFiled: November 13, 1979Date of Patent: May 25, 1982Assignee: Imperial Chemical Industries LimitedInventor: Robin Whyman
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Patent number: 4329258Abstract: These catalysts comprise: A refractory oxide-mineral carrier; a halogen element, present in combined form; and, in free or combined form,(a) a platinum-group metal, m1(b) tin,and additionally a metal, M1, from groups Ia and IIa of the periodic table of the elements in such an amount that: 0.2.ltoreq.M2/M1.ltoreq.10.Specifically, said metal from groups Ia and IIa may be sodium, lithium, potassium, calcium or barium.Type: GrantFiled: May 21, 1980Date of Patent: May 11, 1982Assignee: Compagnie Francaise de RaffinageInventors: Philippe Engelhard, Georges Szabo
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Patent number: 4329220Abstract: A reforming process is disclosed which comprises contacting a sulfur-containing hydrocarbon material in at least one liquid phase scavenging or sulfur removal zone with at least one manganese-containing composition at conditions to remove at least a portion of said sulfur from said hydrocarbon material to produce a hydrocarbon feedstock having a reduced concentration of sulfur; and contacting said hydrocarbon feedstock with a catalyst comprising a minor catalytically effective amount of at least one platinum-group metal component, optionally, a major amount of a porous solid support, optionally, a minor catalytically effective amount of at least one halogen component, and optionally, at least one rhenium component in the presence of hydrogen at hydrocarbon reforming conditions to obtain a hydrocarbon reformate product.Type: GrantFiled: March 14, 1980Date of Patent: May 11, 1982Assignee: Atlantic Richfield CompanyInventor: Thomas J. Nelson
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Patent number: 4325808Abstract: A hydrocarbon conversion catalyst system comprising a mixture of a first catalyst containing a noble metal component deposed on a refractory inorganic oxide and a second catalyst containing a non-noble metal component deposed on a support containing a refractory inorganic oxide and a crystalline aluminosilicate material, and a reforming method employing such catalyst system are disclosed.Type: GrantFiled: July 21, 1980Date of Patent: April 20, 1982Assignee: Standard Oil Company (Indiana)Inventors: Dae K. Kim, Ralph J. Bertolacini
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Patent number: 4325816Abstract: 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 germanium 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, germanium 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. % germanium and about 0.1 to about 3.5 wt. % halogen.Type: GrantFiled: December 8, 1980Date of Patent: April 20, 1982Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: RE31647Abstract: 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: May 27, 1982Date of Patent: August 14, 1984Assignee: Mobil Oil CorporationInventors: William D. McHale, Hans J. Schoennagel