Patents by Inventor Howard D. Simpson
Howard D. Simpson 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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Patent number: 5906731Abstract: A hydroprocess catalyzed by a catalyst composition comprising a porous refractory oxide, a molybdenum component, a phosphorus component and an underbedded nickel component, the composition characterized by a Raman spectrum comprising at least one Raman band in each of the regions of (1) about 240 cm.sup.-1 to about 250 cm.sup.-1, and (2) about 595 cm.sup.-1 to about 605 cm.sup.-1. The catalyst is prepared by sequential incorporation of the nickel metal followed by the additional catalytic promoters including a molybdenum component and a phosphorus component.Type: GrantFiled: July 28, 1997Date of Patent: May 25, 1999Assignee: UOPInventors: Suheil F. Abdo, Howard D. Simpson, Pradeep S. Iyer
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Patent number: 5686375Abstract: A catalyst containing an overlayer of a catalytic promoter on a porous refractory support containing an underbedded Group VIII metal-containing component. The catalyst is prepared by sequential incorporation of the Group VIII metal followed by the additional catalytic promoter component, usually a Group VIB metal, with the porous refractory oxide support. Underbedded nickel components on the catalyst are characterized by a unique Raman spectrum exhibiting Raman bands in the region of about 240 cm.sup.-1 to about 250 cm.sup.-1 and in the region of about 595 cm.sup.-1 to about 605 cm.sup.-1. The catalyst has a MoO.sub.3 /NiO weight ratio less than 6 to 1 and more than 4 weight percent of NiO. The catalyst is especially useful for simultaneous hydrodenitrogenation and hydrodesulfurization of a gas oil, particularly when the refractory oxide support has a narrow pore size distribution.Type: GrantFiled: September 27, 1994Date of Patent: November 11, 1997Assignee: UOPInventors: Pradeep S. Iyer, Howard D. Simpson, Suheil F. Abdo
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Patent number: 5514274Abstract: A process for the simultaneous hydrodenitrogenation and hydrodesulfurization of a gas oil utilizing a novel catalyst. The novel hydroprocessing catalyst comprises an overlayer of at least one Group VIB metal component, at least one Group VIII metal component and at least one phosphorous component on a support comprising at least one underbedded phosphorus component combined with a porous refractory oxide, said catalyst having a median pore diameter from about 60 to about 120 .ANG..Type: GrantFiled: April 3, 1995Date of Patent: May 7, 1996Assignee: UOPInventor: Howard D. Simpson
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Patent number: 5494568Abstract: A catalyst containing an overlayer of a catalytic promoter on a porous refractory support containing an underbedded Group VIII metal-containing component. The catalyst is prepared by sequential incorporation of the Group VIII metal followed by the additional catalytic promoter component, usually a Group VIB metal, with the porous refractory oxide support. The catalyst has a MoO.sub.3 /NiO weight ratio less than 6 to 1 and more than 4 weight percent of NiO. The catalyst is especially useful for simultaneous hydrodenitrogenation and hydrodesulfurization of a gas oil, particularly when the refractory oxide support has a narrow pore size distribution.Type: GrantFiled: January 31, 1995Date of Patent: February 27, 1996Assignee: UOPInventors: Howard D. Simpson, Suheil F. Abdo
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Patent number: 5403806Abstract: A catalyst containing an overlayer of a catalytic promoter on a porous refractory support containing an underbedded phosphorus-containing component. The catalyst is prepared by incorporation and calcination of phosphorus with the porous refractory oxide support followed by further incorporation of the overlayer of catalytic promoter components, such as Group VIB and Group VIII metals. The catalyst is especially active when underbedded phosphorus components are incorporated into the support at calcination temperatures less than 900.degree. F. The catalyst is useful for simultaneous hydrodenitrogenation and hydrodesulfurization of a gas oil, particularly when the refractory oxide support has a narrow pore size distribution.Type: GrantFiled: October 22, 1993Date of Patent: April 4, 1995Assignee: Union Oil Company of CaliforniaInventor: Howard D. Simpson
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Patent number: 5389595Abstract: A catalyst containing an overlayer of a catalytic promoter on a porous refractory support containing an underbedded Group VIII metal-containing component. The catalyst is prepared by sequential incorporation of the Group VIII metal followed by the additional catalytic promoter component, usually a Group VIB metal, with the porous refractory oxide support. The catalyst has a MoO.sub.3 /NiO weight ratio less than 6 to 1 and more than 4 weight percent of NiO. The catalyst is especially useful for simultaneous hydrodenitrogenation and hydrodesulfurization of a gas oil, particularly when the refractory oxide support has a narrow pore size distribution.Type: GrantFiled: September 30, 1993Date of Patent: February 14, 1995Assignee: Union Oil Company of CaliforniaInventors: Howard D. Simpson, Suheil F. Abdo
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Patent number: 5334307Abstract: A catalyst useful for hydroprocessing a hydrocarbon-containing oil contains at least one hydrogenation component on an amorphous, porous refractory oxide support containing between 2 and 8 weight percent of silica. The catalyst is prepared by impregnating support particles having a narrow pore size distribution and a median pore diameter greater than about 120 angstroms with a solution containing precursors of the hydrogenation components, followed by drying and calcining. The catalyst is useful for promoting a number of hydrocarbon hydroprocessing reactions, particularly simultaneous hydrogenative desulfurization, demetallization and denitrogenation of residuum-containing oils.Type: GrantFiled: February 19, 1993Date of Patent: August 2, 1994Assignee: Union Oil Company of CaliforniaInventors: Howard D. Simpson, Marvin J. Schwedock, John W. Ward
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Patent number: 5300217Abstract: A catalyst useful for hydroprocessing a hydrocarbon-containing oil contains at least one hydrogenation component on an amorphous, porous refractory oxide containing delta alumina. The catalyst is prepared by impregnating support particles having a narrow pore size distribution and a median pore diameter greater than about 185 angstroms with a solution containing a precursor of the hydrogenation components, followed by drying and calcining. The catalyst is useful for promoting a number of hydrocarbon hydroprocessing reactions, particularly hydrogenative desulfurization, demetallation and denitrogenation, and most particularly, hydrodemetallation of residuum-containing oils.Type: GrantFiled: March 2, 1993Date of Patent: April 5, 1994Assignee: Union Oil Company of CaliforniaInventors: Howard D. Simpson, Milan Skripek
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Patent number: 5223472Abstract: A catalyst useful for hydroprocessing a hydrocarbon-containing oil contains at least one hydrogenation component on an amorphous, porous refractory oxide containing delta alumina. The catalyst is prepared by impregnating support particles having a narrow pore size distribution and a median pore diameter greater than about 185 angstroms with a solution containing a precursor of the hydrogenation components, followed by drying and calcining. The catalyst is useful for promoting a number of hydrocarbon hydroprocessing reactions, particularly hydrogenative desulfurization, demetallation and denitrogenation, and most particularly, hydrodemetallation of residuum-containing oils.Type: GrantFiled: April 14, 1992Date of Patent: June 29, 1993Assignee: Union Oil Company of CaliforniaInventors: Howard D. Simpson, Milan Skripek
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Patent number: 5210061Abstract: A catalyst useful for hydroprocessing a hydrocarbon-containing oil contains at least one hydrogenation component on an amorphous, porous refractory oxide support containing between 2 and 8 weight percent of silica. The catalyst is prepared by impregnating support particles having a narrow pore size distribution and a median pore diameter greater than about 120 angstroms with a solution containing precursors of the hydrogenation components, followed by drying and calcining. The catalyst is useful for promoting a number of hydrocarbon hydroprocessing reactions, particularly simultaneous hydrogenative desulfurization, demetallization and denitrogenation of residuum-containing oils.Type: GrantFiled: September 24, 1991Date of Patent: May 11, 1993Assignee: Union Oil Company of CaliforniaInventors: Howard D. Simpson, Marvin J. Schwedock, John W. Ward
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Patent number: 5118406Abstract: A catalytic hydrotreating process wherein silicon-containing contaminants contained in a hydrocarbon feedstream are deposited onto a hydrotreating catalyst bed during hydrotreating in a manner providing improved catalyst stability. Hydrotreating catalysts having relatively high activities and low surface areas are located downstream of upstream hydrotreating catalysts having relatively low activities and high surface areas.Type: GrantFiled: April 30, 1991Date of Patent: June 2, 1992Assignee: Union Oil Company of CaliforniaInventors: Peter Kokayeff, Danford E. Clark, Howard D. Simpson
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Patent number: 4969989Abstract: Catalytic materials are modified by adding one or more electropositive and/or electronegative elements thereto in amounts sufficient to adjust the resultant geometric mean electronegativity to a value within a desired or predetermined range. The invention is particularly suited to the preparation of hydrocarbon hydroprocessing catalysts, particularly with respect to hydrodesulfurization catalysts comprising a support material containing a porous refractory oxide. With such catalysts, not only is the geometric mean electronegativity adjusted to a desired value, but if the electropositive or electronegative element added to the catalyst has pore growth promotion properties, the average pore size of the resultant catalyst is increased while its surface area, and usually also its total pore volume, is decreased.Type: GrantFiled: January 10, 1989Date of Patent: November 13, 1990Assignee: Union Oil Company of CaliforniaInventor: Howard D. Simpson
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Patent number: 4969990Abstract: A catalyst useful for hydroprocessing a hydrocarbon-containing oil contains at least one hydrogenation component on an amorphous, porous refractory oxide. The catalyst is prepared by impregnating support particles having a narrow pore size distribution and a mode pore diameter from abpit 70 to 80 angstroms with a solution containing a precursor of the hydrogenation components, followed by drying and calcining. The catalyst is useful for promoting a number of hydrocarbon hydroprocessing reactions, particularly hydrogenative desulfurization, dedemetallization and denitrogenation, and most particularly, hydrodesulfurization of residuum-containing oils.Type: GrantFiled: August 31, 1989Date of Patent: November 13, 1990Assignee: Union Oil Company of CaliforniaInventor: Howard D. Simpson
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Patent number: 4940533Abstract: Hydrocarbon hydroprocessing using catalysts containing a Group VIB metal and a phosphorus component on a porous refractory oxide is prepared by impregnating support particles with a solution containing (1) phosphorus, and (2) citric acid in a mole ratio to Group VIB metal components of less than 1 to 1, followed by drying and calcining. The catalysts are useful for promoting a number of hydrocarbon hydroprocessing reactions, particularly those involving hydrogenative desulfurization, demetallization and most particularly, denitrogenation.Type: GrantFiled: September 29, 1989Date of Patent: July 10, 1990Assignee: Union Oil Company of CaliforniaInventors: Howard D. Simpson, Pauline B. Borgens
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Patent number: 4886582Abstract: A catalyst useful for hydroprocessing a hydrocarbon-containing oil contains at least one hydrogenation component on an amorphous, porous refractory oxide. The catalyst is prepared by impregnating support particles having a narrow pore size distribution and a mode pore diameter from about 70 to 80 angstroms with a solution containing a precursor of the hydrogenation components, followed by drying and calcining. The catalyst is useful for promoting a number of hydrocarbon hydroprocessing reactions, particularly hydrogenative desulfurization, dedemetallization and denitrogenation, and most particularyl, hydrodesulfurization of residuum-containing oils.Type: GrantFiled: June 29, 1988Date of Patent: December 12, 1989Assignee: Union Oil Company of CaliforniaInventor: Howard D. Simpson
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Patent number: 4879265Abstract: A hydrocarbon hydroprocessing catalyst containing a Group VIB metal and a phosphorus component on a porous refractory oxide is prepared by impregnating support particles with a solution containing (1) phosphorus, and (2) citric acid in a mole ratio to Group VIB metal components of less than 1 to 1, followed by drying and calcining. The catalyst is useful for promoting a number of hydrocarbon hydroprocessing reactions, particularly those involving hydrogenative desulfurization, demetallization and most particularly, denitrogenation.Type: GrantFiled: May 10, 1988Date of Patent: November 7, 1989Assignee: Union Oil Company of CaliforniaInventors: Howard D. Simpson, Pauline B. Borgens
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Patent number: 4846961Abstract: A hydroprocessing catalyst contains nickel, phosphorus and about 19 to about 21.5 weight percent of molybdenum (MoO.sub.3) components on a porous refractory oxide. The catalyst has a narrow pore size distribution wherein at least 75 percent of the pore volume is in pores of diameter from about 50 to about 110 angstroms, at least 10 percent of the pore volume in pores of diameter less than 70 angstroms and at least 60 percent of the pore volume in pores of diameter within about 20 angstroms above or below the average pore diameter. The catalyst is employed to hydroprocess a hydrocarbon oil, especially those oils containing sulfur and nitrogen components.Type: GrantFiled: December 30, 1987Date of Patent: July 11, 1989Assignee: Union Oil Company of CaliforniaInventors: Paul R. Robinson, Howard D. Simpson
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Patent number: 4818743Abstract: Hydrocarbon conversion catalysts contain at least one Group VIB metal component, at least one Group VIII metal component, and a phosphorus component on a porous refractory oxide and have a narrow pore size distribution including at least about 75 percent of the total pore volume in pores of diameter from about 70 to about 130 angstroms. The catalyst is useful for promoting a number of hydrocarbon conversion reactions, particularly those involving hydrogenative desulfurization.Type: GrantFiled: December 1, 1987Date of Patent: April 4, 1989Assignee: Union Oil Company of CaliforniaInventors: Howard D. Simpson, Ryden L. Richardson, Kenneth Baron
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Patent number: 4816434Abstract: Catalytic materials are modified by adding one or more electropositive and/or electronegative elements thereto in amounts sufficient to adjust the resultant geometric mean electronegativity to a value within a desired or predetermined range. The invention is particularly suited to the preparation of hydrocarbon hydroprocessing catalysts, particularly with respect to hydrodesulfurization catalysts comprising a support material containing a porous refractory oxide. With such catalysts, not only is the geometric mean electronegativity adjusted to a desired value, but if the electropositive or electronegative element added to the catalyst has pore growth promotion properties, the average pore size of the resultant catalyst is increased while its surface area, and usually also its total pore volume, is decreased.Type: GrantFiled: February 19, 1982Date of Patent: March 28, 1989Assignee: Union Oil Company of CaliforniaInventor: Howard D. Simpson
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Patent number: 4743353Abstract: A hydrocarbon conversion catalyst containing a Group VIB metal on a porous refractory oxide is prepared by impregnating support particles with a solution containing Group VIB metal components and citric acid, followed by drying and calcining. The catalyst is useful for promoting a number of hydrocarbon conversion reactions, particularly those involving hydrogenative desulfurization, demetallization and denitrogenation.Type: GrantFiled: February 3, 1986Date of Patent: May 10, 1988Assignee: Union Oil Company of CaliforniaInventors: Pauline B. Ting, Howard D. Simpson