Patents by Inventor George Frederick Salem
George Frederick Salem has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20030139624Abstract: A process for preparing a supported metal catalyst composition which comprises impregnating microspheroidal support particles with a solution of at least one catalytically active metal, or precursor, drying the impregnated support particles and then treating the mobile metal, or precursor in a mobile state with a liquid comprising at least one reducing agent to deposit and immobilize the metal, or its precursor, in the support particles such that the metal, or its precursor, is distributed in the support particle in a layer below the surface of the support particle, the layer being between an inner and an outer region having a lower concentration of metal or precursor. Also, a composition comprising microspheroidal support particles having at least one catalytically active metal or precursor thereof distributed in a layer below the surface of the particles, the layer being between an inner and an outer region of the support particle each having a lower concentration of metal or precursor.Type: ApplicationFiled: January 6, 2003Publication date: July 24, 2003Applicant: BP Chemicals LimitedInventors: Michael James Baker, John William Couves, Kenneth George Griffin, Peter Johnston, James Colin McNicol, George Frederick Salem
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Patent number: 6534438Abstract: Composition and process for making same in which the composition includes support particles having at least one catalytically active metal or precursor thereof distributed therein in a layer below the surface of the particle. The layer is located between an inner and an outer region of the support particle, and each of the inner and outer regions has a lower concentration of the metal or precursor thereof than the layer.Type: GrantFiled: July 26, 2000Date of Patent: March 18, 2003Assignees: BP Chemicals Limited, Johnson Matthey Public Limited Co.Inventors: Michael James Baker, John William Couves, Kenneth George Griffin, Peter Johnston, James Colin McNicol, George Frederick Salem
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Patent number: 6534672Abstract: A catalytically active material useful to prepare vinyl acetate monomer from ethylene, acetic acid, and an oxygen-containing gas under fluid bed conditions comprises a porous microspheroidal support containing catalytically active palladium crystallites finely dispersed within the support. This catalyst material does not require incorporation of gold to maintain activity and selectivity. A process to produce a vinyl acetate fluid bed catalyst in which catalytically active small palladium crystallites are finely dispersed within the support comprises dispersing selected metal species within the support which have an affinity to palladium to form very fine crystallites of palladium. The affinity metal species may be dispersed by impregnation onto a preformed microspheroidal support or may be intimately incorporated within the support before impregnation with a soluble palladium species.Type: GrantFiled: December 4, 2001Date of Patent: March 18, 2003Assignee: The Standard Oil CompanyInventors: George Frederick Salem, Michael James Baker
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Patent number: 6528453Abstract: A process for preparing a supported metal catalyst composition which comprises impregnating microspheroidal support particles with a solution of at least one catalytically active metal, or precursor, drying the impregnated support particles and then treating the mobile metal, or precursor in a mobile state with a liquid comprising at least one reducing agent to deposit and immobilize the metal, or its precursor, in the support particles such that the metal, or its precursor, is distributed in the support particle in a layer below the surface of the support particle, the layer being between an inner and an outer region having a lower concentration of metal or precursor. Also, a composition comprising microspheroidal support particles having at least one catalytically active metal or precursor thereof distributed in a layer below the surface of the particles, the layer being between an inner and an outer region of the support particle each having a lower concentration of metal or precursor.Type: GrantFiled: July 16, 2001Date of Patent: March 4, 2003Assignees: BP Chemicals Limited, Johnson Matthey Public LimitedInventors: Michael James Baker, John William Couves, Kenneth George Griffin, Peter Johnston, James Colin McNicol, George Frederick Salem
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Patent number: 6399813Abstract: A process for the preparation of a fluid bed vinyl acetate (VAM) catalyst comprising impregnating a support comprising a mixture of substantially inert microspheroidal particles with a solution comprising a metal salt of Pd and M, wherein M comprises Ba, Cd, Au, La, Nb, Ce, Zn, Pb, Ca, Sr, Sb or mixtures thereof, reducing the metal salts to form a deposit of Pd and M on the support surface and impregnating the support with at least one alkali metal salt. At least 50% of the particles used for the microspheroidal support have a particle size below 105 microns.Type: GrantFiled: August 14, 2001Date of Patent: June 4, 2002Assignee: The Standard Oil CompanyInventors: Patricia Rae Blum, Larry Michael Cirjak, Marc Anthony Pepera, Christos Paparizos, George Frederick Salem, Michael James Baker
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Patent number: 6395676Abstract: A process for the preparation of a fluid bed vinyl acetate (VAM) catalyst comprising impregnating a support comprising a mixture of substantially inert microspheroidal particles with a solution comprising a metal salt of Pd and M, wherein M comprises Ba, Cd, Au, La, Nb, Ce, Zn, Pb, Ca, Sr, Sb or mixtures thereof, reducing the metal salts to form a deposit of Pd and M on the support surface and impregnating the support with at least one alkali metal salt. At least 50% of the particles used for the microspheroidal support have a particle size below 105 microns.Type: GrantFiled: June 30, 1999Date of Patent: May 28, 2002Assignee: The Standard Oil CompanyInventors: Patricia Rae Blum, Larry Michael Cirjak, Marc Anthony Pepera, Christos Paparizos, George Frederick Salem, Michael James Baker
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Publication number: 20020062039Abstract: A catalytically active material useful to prepare vinyl acetate monomer from ethylene, acetic acid, and an oxygen-containing gas under fluid bed conditions comprises a porous microspheroidal support containing catalytically active palladium crystallites finely dispersed within the support. This catalyst material does not require incorporation of gold to maintain activity and selectivity. A process to produce a vinyl acetate fluid bed catalyst in which catalytically active small palladium crystallites are finely dispersed within the support comprises dispersing selected metal species within the support which have an affinity to palladium to form very fine crystallites of palladium. The affinity metal species may be dispersed by impregnation onto a preformed microspheroidal support or may be intimately incorporated within the support before impregnation with a soluble palladium species.Type: ApplicationFiled: December 4, 2001Publication date: May 23, 2002Inventors: George Frederick Salem, Michael James Baker
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Patent number: 6358882Abstract: A catalytically active material useful to prepare vinyl acetate monomer from ethylene, acetic acid, and an oxygen-containing gas under fluid bed conditions comprises a porous microspheroidal support containing catalytically active palladium crystallites finely dispersed within the support. This catalyst material does not require incorporation of gold to maintain activity and selectivity. A process to produce a vinyl acetate fluid bed catalyst in which catalytically active small palladium crystallites are finely dispersed within the support comprises dispersing selected metal species within the support which have an affinity to palladium to form very fine crystallites of palladium. The affinity metal species may be dispersed by impregnation onto a preformed microspheroidal support or may be intimately incorporated within the support before impregnation with a soluble palladium species.Type: GrantFiled: November 15, 1999Date of Patent: March 19, 2002Assignee: The Standard Oil CompanyInventors: George Frederick Salem, Michael James Baker
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Publication number: 20020032349Abstract: A process for preparing a supported metal catalyst composition which comprises impregnating microspheroidal support particles with a solution of at least one catalytically active metal, or precursor, drying the impregnated support particles and then treating the mobile metal, or precursor in a mobile state with a liquid comprising at least one reducing agent to deposit and immobilize the metal, or its precursor, in the support particles such that the metal, or its precursor, is distributed in the support particle in a layer below the surface of the support particle, the layer being between an inner and an outer region having a lower concentration of metal or precursor. Also, a composition comprising microspheroidal support particles having at least one catalytically active metal or precursor thereof distributed in a layer below the surface of the particles, the layer being between an inner and an outer region of the support particle each having a lower concentration of metal or precursor.Type: ApplicationFiled: July 16, 2001Publication date: March 14, 2002Applicant: BP Chemicals Limited.Inventors: Michael James Baker, John William Couves, Kenneth George Griffin, Peter Johnston, James Colin McNicol, George Frederick Salem
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Publication number: 20020028966Abstract: A process for the preparation of a fluid bed vinyl acetate (VAM) catalyst comprising impregnating a support comprising a mixture of substantially inert microspheroidal particles with a solution comprising a metal salt of Pd and M, wherein M comprises Ba, Cd, Au, La, Nb, Ce, Zn, Pb, Ca, Sr, Sb or mixtures thereof, reducing the metal salts to form a deposit of Pd and M on the support surface and impregnating the support with at least one alkali metal salt. At least 50% of the particles used for the microspheroidal support have a particle size below 105 microns.Type: ApplicationFiled: August 14, 2001Publication date: March 7, 2002Inventors: Patricia Rae Blum, Larry Michael Cirjak, Marc Anthony Pepera, Christos Paparizos, George Frederick Salem, Michael James Baker
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Patent number: 6350901Abstract: In a process for production of vinyl acetate in which ethylene, liquid acetic acid and an oxygen-containing gas are fed to a fluid bed reactor containing a catalyst comprising a Group VIII metal, a promoter and a co-promoter, stickiness of the catalyst is reduced by limiting the amount of co-promoter to up to 6% by weight of the catalyst.Type: GrantFiled: July 29, 1999Date of Patent: February 26, 2002Assignee: BP Chemicals LimitedInventors: Simon James Kitchen, George Frederick Salem, Bruce Leo Williams
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Publication number: 20010018401Abstract: A process for the preparation of a fluid bed vinyl acetate (VAM) catalyst comprising impregnating a support comprising a mixture of substantially inert microspheroidal particles with a solution comprising a metal salt of Pd and M, wherein M comprises Ba, Cd, Au, La, Nb, Ce, Zn, Pb, Ca, Sr, Sb or mixtures thereof, reducing the metal salts to form a deposit of Pd and M on the support surface and impregnating the support with at least one alkali metal salt. At least 50% of the particles used for the microspheroidal support have a particle size below 105 microns.Type: ApplicationFiled: June 30, 1999Publication date: August 30, 2001Inventors: PATRICIA RAE BLUM, LARRY MICHAEL CIRJAK, MARC ANTHONY PEPERA, CHRISTOS PAPARIZOS, GEORGE FREDERICK SALEM, MICHAEL JAMES BAKER