Patents Represented by Attorney, Agent or Law Firm Jay Simon
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Patent number: 4826797Abstract: Catalysts comprising a carbon-containing sulfide of molybdenum or tungsten are prepared by contacting, in the presence of sulfur, hydrogen and a hydrocarbon, ammonia and ammonium substituted molybdate, thiomolybdate, tungstate and thiotungstate salts at a temperature of from about 200.degree.-600.degree. C. These catalysts are useful for hydrotreating reactions. In a preferred embodiment, these catalysts will be promoted with certain transition metal sulfides, such as cobalt sulfide, which results in catalysts having greater activity than conventional catalysts such as cobalt-molybdate on alumina.Type: GrantFiled: November 10, 1986Date of Patent: May 2, 1989Assignee: Exxon Research and Engineering CompanyInventors: Russell R. Chianelli, Theresa A. Pecoraro
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Patent number: 4822824Abstract: A hydrogen regenerable hydrocarbon synthesis catalyst useful for preparing higher hydrocarbons from synthesis gas is prepared by depositing cobalt and ruthenium on a refractory carrier and oxidizing and reducing the catalytic metals to form a catalyst in which the cobalt and ruthenium are in intimate contact.Type: GrantFiled: December 7, 1987Date of Patent: April 18, 1989Assignee: Exxon Research and Engineering CompanyInventors: Enrique Iglesia, Stuart L. Soled, Rocco A. Fiato
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Patent number: 4820591Abstract: A corrosion resistant article comprising a refractory metal having a sulfide coating of said refractory metal formed thereon and a method for producing the same by forming on a refractory metal substrate a sulfide coating of said refractory metal. The corrosion resistant article may be provided in a composite comprising also a metal substrate.Type: GrantFiled: May 11, 1987Date of Patent: April 11, 1989Assignee: Exxon Research and Engineering CompanyInventor: Trikur A. Ramanarayanan
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Patent number: 4794099Abstract: An improved hydrocarbon synthesis catalyst is prepared incorporating limited amounts of silica or a silica precursor to a catalyst comprising cobalt or an inorganic refractory support comprised primarily of titania.Type: GrantFiled: January 28, 1987Date of Patent: December 27, 1988Assignee: Exxon Research and Engineering CompanyInventors: Enrique Iglesia, Stuart Soled, Rocco A. Fiato
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Patent number: 4762934Abstract: A novel class of diaminoether compounds wherein one amino group thereof is a tertiary amine in N-heterocyclic form and the other amino group is a severely sterically hindered secondary amino group may be prepared by a three-step process and are useful in the selective removal of H.sub.2 S from mixtures containing H.sub.2 S and CO.sub.2.Type: GrantFiled: January 3, 1984Date of Patent: August 9, 1988Assignee: Exxon Research and Engineering CompanyInventors: Eugene L. Stogryn, Guido Sartori
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Patent number: 4738948Abstract: A hydrogen regenerable hydrocarbon synthesis catalyst useful for preparing higher hydrocarbons from synthesis gas is prepared by depositing cobalt and ruthenium on a refractory carrier and oxidizing and reducing the catalytic metals to form a catalyst in which the cobalt and ruthenium are in intimate contact.Type: GrantFiled: July 2, 1986Date of Patent: April 19, 1988Assignee: Exxon Research and Engineering CompanyInventors: Enrique Iglesia, Stuart L. Soled, Rocco A. Fiato
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Patent number: 4727210Abstract: A liquid catalyst for hydrocarbon conversion reactions and a method for reacting hydrocarbons employing such catalyst is provided by the present invention. The liquid catalyst includes a strong liquid acid such as sulfuric acid or trifluoromethanesulfonic acid and an ion-stabilizing agent such as hexafluoroisopropanol or trifluoroacetic acid. The liquid catalyst has a significantly higher Bronsted acidity than the strong liquid Bronsted acid alone. When the liquid catalyst is used to catalyze the transalkylation of alkylbenzene, for example, the rate of transalkylation is from 2 to 3 times greater than using the strong liquid acid alone.Type: GrantFiled: April 17, 1987Date of Patent: February 23, 1988Assignee: Exxon Research and Engineering CompanyInventor: Dan A. Farcasiu
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Patent number: 4719240Abstract: New Fischer-Tropsch catalysts containing a Lanthanide Group element, such as cerium, exhibit improved activity over conventional catalysts and exhibit a reversal in the olefin/paraffin ratio of low molecular weight hydrocarbons. The catalyst comprises:(a) a Group VIII metal oxide;(b) a Group IIB metal oxide;(c) a Group IVB and/or VIIB metal oxide;(d) a Group IA metal oxide; and,(e) a Lanthanide group metal oxide.Type: GrantFiled: November 6, 1986Date of Patent: January 12, 1988Assignee: Exxon Research and Engineering CompanyInventors: Rocco A. Fiato, Ronny Bar-Gadda, Sabato Miseo
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Patent number: 4705622Abstract: Disclosed is a process for removing entrained mineral matter particles from shale-oil by contacting the shale-oil with an aqueous ammonium or phosphonium salt solution having a pH of about 0.5 to 8 and at a temperature from about 0.degree. C. to 100.degree. C.Type: GrantFiled: March 27, 1986Date of Patent: November 10, 1987Assignee: Exxon Research and Engineering CompanyInventors: Michael Siskin, Glen B. Brons, Gary S. Green
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Patent number: 4683216Abstract: This invention is a method for producing an acidic catalyst product which may be used for hydrocarbon conversion reactions and a method for reacting hydrocarbons employing such catalyst product. The method comprises the step of contacting the perfluorinated polymersulfonic acid with a mixture of the anion-stabilizing agent and its corresponding anhydride, the stabilizing agent being a fluorinated carboxylic acid. The composite catalyst has a significantly higher Bronsted acidity than the perfluorinated polymersulfonic acid. When the catalyst composite is used to catalyze the alkylation of toluene with 1-hexene, for example, the rate of alkylation is from about 20 to 30 times greater than using the perfluorinated polymersulfonic acid alone.Type: GrantFiled: April 4, 1986Date of Patent: July 28, 1987Assignee: Exxon Research and Engineering CompanyInventor: Dan Farcasiu
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Patent number: 4677090Abstract: A liquid catalyst for hydrocarbon conversion reactions and a method for reacting hydrocarbons employing such catalyst is provided by the present invention. The liquid catalyst includes a strong liquid acid such as sulfuric acid or trifluoromethanesulfonic acid and an ion-stabilizing agent such as hexafluoroisopropanol or trifluoroacetic acid. The liquid catalyst has a significantly higher Bronsted acidity than the strong liquid Bronsted acid alone. When the liquid catalyst is used to catalyze the transalkylation of alkylbenzene, for example, the rate of transalkylation is from 2 to 3 times greater than using the strong liquid acid alone.Type: GrantFiled: January 13, 1986Date of Patent: June 30, 1987Assignee: Exxon Research and Engineering CompanyInventor: Dan A. Fracasiu
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Patent number: 4673769Abstract: This invention provides a catalyst product for hydrocarbon conversion reactions and a method for reacting hydrocarbons employing such catalyst product. The catalyst product is a composite of a perfluorinated polymersulfonic acid and an ion-stabilizing agent such as hexafluoroisopropanol or trifluoroacetic acid. The composite catalyst has a significantly higher Bronsted acidity than the perfluorinated polymersulfonic acid. When the catalyst composite is used to catalyze the alkylation of toluene with 1-hexene, for example, the rate of alkylation is from about 20 to 30 times greater than using the perfluorinated polymersulfonic acid alone.Type: GrantFiled: December 13, 1985Date of Patent: June 16, 1987Assignee: Exxon Research and Engineering CompanyInventor: Dan Farcasiu
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Patent number: 4672147Abstract: This invention provides a method for isomerizing olefins using a catalyst product which is a composite of a perfluorinated polymersulfonic acid and an anion-stabilizing agent such as hexafluoroisopropanol or trifluoroaetic acid. The composite catalyst has a significantly higher Bronsted acidity than the perfluorinated polymersulfonic acid.Type: GrantFiled: April 4, 1986Date of Patent: June 9, 1987Assignee: Exxon Research and Engineering CompanyInventor: Dan Farcasiu
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Patent number: 4648960Abstract: A class of bound catalysts which exhibit superior activity maintenance in dehydrocyclization reactions are defined as a type L zeolite having exchangeable cations of which at least 75% are selected from Group IA and calcium and barium cations and containing well dispersed particles of at least one Group VIII noble metal where at least 90% of the noble metal thereof is dispersed in the form of particles having a diameter less than 7 .ANG.. The catalysts may also be identified as type L zeolites loaded with at least one Group VIII noble metal which have a terminal cracking index (as a measure of production of pentanes versus butanes from hexane) of at least 1.5.Type: GrantFiled: March 10, 1986Date of Patent: March 10, 1987Assignee: Exxon Research and Engineering CompanyInventors: Kenneth R. Poeppelmeier, Walter G. Funk, John J. Steger, Shun C. Fung, Virginia R. Cross, Jar-Lin Kao
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Patent number: 4624764Abstract: Separation of dispersed phase (e.g., solid, gel, liquid or gas contiminant) from a continuous fluid background phase (liquid or gas) is achieved by injecting free charge into the phase mixture, which both induces an electric field within the mixture and effects charging of the dispersed phase. The interaction between the induced electric field and the charged contaminants causes migration of the contaminant and collection on preferably densely packed collector surfaces within the phase mixture. The dense packing reduces the migration path length and therefore increases the contaminant separation effectiveness. The collector surfaces can be provided by a bed of beads.Type: GrantFiled: April 17, 1984Date of Patent: November 25, 1986Assignee: Exxon Research and Engineering CompanyInventors: Donald J. Mintz, Anthony M. Gleason
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Patent number: 4622119Abstract: To promote nucleation of a solute in a solution (e.g. wax dissolved in lubricating oil), free excess charge which is net unipolar is introduced into the solution, for example by charge injection, and the solubility for the solute is reduced (for example by cooling), at least until nucleation of the solution takes place. Nucleation is the physical mechanism which leads to precipitation of the solute and so this method can be applied for the electrical pretreatment of the solution to produce a precipitate, following which the precipitate can be removed from the solvent by conventional separation techniques or be present to provide desired physical or chemical characteristics. An alternative method is to reduce the solubility of the solute in the solution almost to the point of nucleation, and only then to introduce the free excess charge so as to precipitate the onset of nucleation.Type: GrantFiled: April 11, 1985Date of Patent: November 11, 1986Assignee: Exxon Research and Engineering CompanyInventors: Anthony E. Cerkanowicz, Irving D. Crane, Brian P. Flannery, Robert J. L. Chimenti
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Patent number: 4605485Abstract: A charge injection device is disclosed which issues free charge injected fluid from an orifice (4) into a region of lower pressure downstream. To avoid significant impairment of charge injection level or efficiency by an electrode pair (5, 8) in the region of the orifice (4) due to the reduced downstream pressure, the pressure in the region of orifice (4) is raised, close to the pressure in the charge injection chamber (2), by feeding gas, such as sulfur hexafluoride, to a chamber (18) having an outlet orifice (27) issuing into the lower pressure downstream region.Type: GrantFiled: April 17, 1984Date of Patent: August 12, 1986Assignee: Exxon Research and Engineering Co.Inventor: Anthony E. Cerkanowicz
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Patent number: 4551543Abstract: A hydroformylation catalyst of the formulaL.sub.a CuCo(CO).sub.b L'cwherein L is a monodentate phosphine, a bidentate phosphine or a bidentate amine, a is 1-3, b is 3 or 4, c is 0 or 1; provided that, where b=4, c=0 and L' is CO, phosphine or phosphite. Where the catalysts have the formulaL.sub.a CuCo(CO).sub.4the compounds are novel.Type: GrantFiled: December 21, 1983Date of Patent: November 5, 1985Assignee: Exxon Research and Engineering Co.Inventors: Gerald Doyle, Kenneth A. Eriksen, Roy L. Pruett
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Patent number: 4463175Abstract: A new composition of matter comprising molybdenum trioxide and heterocyclic nitrogen or oxygen Lewis bases. The molybdenum trioxide, upon reaction with Lewis base, forms a layered compound characterized in that the Lewis base is covalently bonded to molybdenum atoms in molybdenum oxide layers. The layered compound has the formula LMoO.sub.3 or L.sub.1/2 MoO.sub.3 where L is a Lewis base containing nitrogen or oxygen electron donors and selected from the group consisting of 5- and 6-membered heterocyclic amines, amine oxides, triorganophosphates, phosphine oxides and sulfoxides. L has the steric requirement such that its maximum cross-sectional area perpendicular to an axis running through the L-Mo covalent bond is less than about 30(.ANG.).sup.2.Type: GrantFiled: July 29, 1982Date of Patent: July 31, 1984Assignee: Exxon Research & Engineering Co.Inventors: Jack W. Johnson, Allan J. Jacobson
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Patent number: 4459406Abstract: A new composition of matter comprising the reaction product of a mixed oxide having layers of corner linked octahedra and tetrahedra and a Lewis base. The reaction product forms a layered compound of the formula L.sub.x MOM'O.sub.4 where MOM'O.sub.4 is a mixed oxide selected from the group consisting of VOPO.sub.4, VOSO.sub.4, VOAsO.sub.4, VOMoO.sub.4, NbOPO.sub.4, NbOAsO.sub.4, TaOPO.sub.4 and MoOPO.sub.4, x is from about 0.1 to 1.0 and L is a Lewis base containing nitrogen or oxygen electron donor and is selected from the group consisting of 5-membered heterocyclic amines, 6-membered heterocyclic amines, amine oxides, triorganophosphates, phosphine oxides and sulfoxides. The layered compounds are characterized in that L is covalently bound to a metal atom in the MOM'O.sub.4 layer.Type: GrantFiled: July 29, 1982Date of Patent: July 10, 1984Assignee: Exxon Research and Engineering Co.Inventors: Jack W. Johnson, Allan J. Jacobson