Patents by Inventor Fawzy G. Sherif

Fawzy G. Sherif 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).

  • Patent number: 5824832
    Abstract: A low temperature molten ionic liquid composition comprising a mixture of a metal halide and an alkyl-containing amine hydrohalide salt can be used in linear alkylbenzene formation. The metal halide is a covalently bonded metal halide which can contain a metal selected from the group comprised of aluminum, gallium, iron, copper, zinc, and indium, and is most preferably aluminum trichloride. The alkyl-containing amine hydrohalide salt may contain up to three alkyl groups, which are preferably lower alkyl, such as methyl and ethyl.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: October 20, 1998
    Assignee: Akzo Nobel NV
    Inventors: Fawzy G. Sherif, Lieh-Jiun Shyu, Carl C. Greco
  • Patent number: 5731101
    Abstract: A low temperature molten ionic liquid composition comprising a mixture of a metal halide and an alkyl-containing amine hydrohalide salt is described which is useful as a catalyst and a solvent in alkylation, arylation and polymerization reactions or as an electrolyte for batteries. The metal halide is a covalently bonded metal halide which can contain a metal selected from the group comprised of aluminum, gallium, iron, copper, zinc, and indium, and is most preferably aluminum trichloride. The alkyl-containing amine hydrohalide salt may contain up to three alkyl groups, which are preferably lower alkyl, such as methyl and ethyl.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: March 24, 1998
    Assignee: Akzo Nobel NV
    Inventors: Fawzy G. Sherif, Lieh-Jiun Shyu, Christine P. M. Lacroix, Auke G. Talma
  • Patent number: 5573991
    Abstract: A process for forming a supported metal carbide catalyst, for example, a Group VIB transition metal carbide, such as tungsten carbide, which process comprises the calcination of a carbon support that has been impregnated with a metal carbide precursor comprising a water soluble salt of: (1) a cation comprising nitrogen-hydrogen bonded moieties, such as a guanidine cation; and (2) an anion, such as a tungstate anion, comprising metal-oxygen bonded moieties, so that upon calcination the product formed is the metal carbide and the by-products comprise ammonia and carbon dioxide.
    Type: Grant
    Filed: May 20, 1994
    Date of Patent: November 12, 1996
    Assignee: Akzo Nobel N.V.
    Inventors: Fawzy G. Sherif, Anantha N. Desikan
  • Patent number: 5451557
    Abstract: A process for forming a metal carbide catalyst, for example, a Group VIB transition metal carbide, such as tungsten carbide, which may be on a support, which process comprises the calcination of a precursor comprising a water soluble salt of: (1) a cation comprising nitrogen-hydrogen bonded moieties, such as a guanidine cation; and (2) an anion, such as a tungstate anion, comprising metal-oxygen bonded moieties, so that upon calcination the product formed is the metal carbide and the by-products comprise ammonia and carbon dioxide.
    Type: Grant
    Filed: February 24, 1994
    Date of Patent: September 19, 1995
    Assignee: Akzo Nobel N.V.
    Inventor: Fawzy G. Sherif
  • Patent number: 5451389
    Abstract: Transition metal carbides, having high surface areas and catalytic activity for use in pollution control, isomerization and hydrodesulfurization procedures, can be formed by the calcination of a mixture of an acyclic compound containing carbon-nitrogen-hydrogen bonding and a metal salt. The acyclic compound is preferably a compound of guanidine or a derivative thereof such as a deammoniated derivative of guanidine. The metal salt is preferably a metal halide such as a metal chloride.
    Type: Grant
    Filed: November 23, 1993
    Date of Patent: September 19, 1995
    Assignee: Akzo Nobel N.V.
    Inventor: Fawzy G. Sherif
  • Patent number: 5444173
    Abstract: Bimetallic oxynitrides and nitrides which have catalytic properties comprise two transition metals selected from Groups IIIB to VIII of the Periodic Table of the Elements. Preferably, one metal is either molybdenum or tungsten. The other can be tungsten or molybdenum, respectively, or another transition metal, such as vanadium, niobium, chromium, manganese, cobalt, or nickel. They have a face centered cubic (fcc) arrangement of the metal atoms and have a surface area of no less than about 40 m.sup.2 /gm.
    Type: Grant
    Filed: November 19, 1993
    Date of Patent: August 22, 1995
    Assignees: Akzo Nobel N.V., Clarkson University
    Inventors: Shigeo T. Oyama, Chunzhe C. Yu, Fawzy G. Sherif
  • Patent number: 5426252
    Abstract: Chloromethane compounds including carbon tetrachloride and the chlorofluoromethane compounds, such as dichlorodifluoromethane, can be catalytically hydrodechlorinated, e.g., in the case of dichlorodifluoromethane to monochlorodifluoromethane and/or difluoromethane, by treatment with hydrogen in the presence of a transition metal carbide catalyst, for example, a Group IVB metal carbide, such as tungsten carbide, supported on an oxidic support, such as alumina, optionally with a passivating layer of ceramic, such as silicon carbide, between the oxidic support and catalyst. The catalyst preferably has a surface area of no less than about 1 m.sup.2 /gm.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: June 20, 1995
    Assignee: Akzo Nobel NV
    Inventor: Fawzy G. Sherif
  • Patent number: 5384027
    Abstract: A process for reforming a hydrocarbon which comprises treating the hydrocarbon, while at elevated temperature, with a transition metal catalyst while in the presence of an effective amount of gaseous oxygen to improve the selectivity of the catalyst to aromatic formation and reduce the hydrogenolysis activity of the catalyst. The transition metal may be tungsten, and the transition metal catalyst may be supported on an oxidic support, optionally with a ceramic passivation layer lying between the support and the transition metal catalyst. The amount of gaseous oxygen used may be from about 50 ppm to about 5000 ppm, based upon the weight of the hydrocarbon.
    Type: Grant
    Filed: November 9, 1993
    Date of Patent: January 24, 1995
    Assignee: Akzo Nobel N.V.
    Inventor: Fawzy G. Sherif
  • Patent number: 5338716
    Abstract: Supported non-oxide metal carbide-containing catalysts are provided which comprise: (a) an oxide support, such as alumina or cordierite; (b) a passivating layer of a ceramic, such as silicon carbide; and (c) a non-oxide metal ceramic catalytic component, such as a Group VI metal carbide or nitride, preferably tungsten carbide or molybdenum carbide.
    Type: Grant
    Filed: December 1, 1992
    Date of Patent: August 16, 1994
    Assignee: Akzo Nobel nv
    Inventors: Kelly B. Triplett, Johst H. Burk, Fawzy G. Sherif, Willem Vreugdenhil
  • Patent number: 5330944
    Abstract: Tungsten carbide/zeolite catalysts useful in the hydrogenation of unsaturated sulfur containing compounds and in particular in the production of tetrahydrothiophene are provided.Also provided is a process for the production of tetrahydrothiophene from thiophene using the tungsten carbide/zeolite catalysts taught, which effects the selective production of tetrahydrothiophene without producing large quantities of H.sub.2 S and unwanted hydrocarbons.
    Type: Grant
    Filed: January 22, 1993
    Date of Patent: July 19, 1994
    Assignee: Akzo Nobel NV
    Inventors: Fawzy G. Sherif, Willem Vreugdenhil
  • Patent number: 5321161
    Abstract: Nitriles can be hydrogenated to amines by heating the nitrile in the presence of hydrogen and a tungsten carbide catalyst, such as are formed by the calcination of a tungsten salt with an acyclic compound containing-nitrogen-hydrogen bonding.
    Type: Grant
    Filed: May 17, 1993
    Date of Patent: June 14, 1994
    Assignee: Akzo nv
    Inventors: Willem Vreugdenhil, Fawzy G. Sherif, Johst H. Burk, James F. Gadberry
  • Patent number: 5312613
    Abstract: The addition of an aqueous solution containing one or more cations intended in a metal oxide ceramic product to a base to precipitate a calcinable metal oxide ceramic precursor reduces gelation problems during the precipitation of the precursor.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: May 17, 1994
    Assignee: Akzo N.V.
    Inventors: Lieh-Jiun Shyu, Fawzy G. Sherif
  • Patent number: 5246685
    Abstract: Carbides of Group VIB metals, such as tungsten and molybdenum, can be formed by the pyrolysis of a salicylate of such metal. The salicylate can be formed by reaction of a Group VIB metal halide with salicylic acid.
    Type: Grant
    Filed: August 21, 1992
    Date of Patent: September 21, 1993
    Assignee: Akzo N.V.
    Inventors: Carl C. Greco, Thomas A. Gallo, Fawzy G. Sherif
  • Patent number: 5169969
    Abstract: Mixed bimetallic alkoxide-caraboxylate compositions are formed by reaction of at least two metal alkoxides and a carboxylic acid with elimination of distillable ester by-product therefrom. Hydrolysis of said compositions produce bimetallic hydroxy-carboxylates which, upon calcination, give bimetallic oxides.
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: December 8, 1992
    Assignee: Akzo nv
    Inventor: Fawzy G. Sherif
  • Patent number: 5142078
    Abstract: Aluminum alkoxides can be formed by reaction of aluminum metal and alcohol in the presence of soluble titanium (e.g., derived from a titanium carboxylate) as the catalyst for the reaction.
    Type: Grant
    Filed: January 24, 1992
    Date of Patent: August 25, 1992
    Assignee: Akzo nv
    Inventors: Fawzy G. Sherif, Johst H. Burk
  • Patent number: 5047174
    Abstract: Stable metal oxide sols comprising an anhydrous alcohol having metal oxide particles colloidally dispersed therein is disclosed. This sol composition is formed by the hydrolysis of a metal alkoxide to form metal oxide particles, removal of the particles from the resulting mother liquor from such a reaction, and the redispersing of the metal oxide powders in an anhydrous alcohol solvent.
    Type: Grant
    Filed: November 21, 1988
    Date of Patent: September 10, 1991
    Assignee: Akzo America Inc.
    Inventor: Fawzy G. Sherif
  • Patent number: 5034550
    Abstract: Mixed heavy bimetallic alkoxide-carboxylate compositions are formed by reaction of a heavy metal tetraalkoxide (e.g., a zirconium alkoxide) and a heavy metal tricarboxylate (e.g., yttrium acetate) with elimination of distillable ester by-product therefrom. Hydrolysis of said compositions produced novel bimetallic hydroxy-carboxylates. Calcination of the hydrolysis products give bimetallic oxides.
    Type: Grant
    Filed: June 7, 1990
    Date of Patent: July 23, 1991
    Assignee: Akzo N.V.
    Inventor: Fawzy G. Sherif
  • Patent number: 5023071
    Abstract: Metal oxide powders, which are chemically uniform and free-flowing, can be formed by dissolving a metal alkoxide in a non-polar organic solvent, adding water to the resulting composition and then emulsifying the blend of water and solvent containing the alkoxide to cause hydrolysis of the alkoxide. The hydrolysis reaction forms the desired metal oxide as a precipitate which can be recovered by a simple filtration process.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: June 11, 1991
    Assignee: Akzo America Inc.
    Inventor: Fawzy G. Sherif
  • Patent number: 5002610
    Abstract: Improved magnesium phosphate fast-setting cements comprising an effective amount of fiber to increase the impact strength of the cement. These fibers include glass, metal, organic and mixtures thereof.
    Type: Grant
    Filed: December 12, 1985
    Date of Patent: March 26, 1991
    Assignee: Rhone-Poulenc Basic Chemicals Co.
    Inventors: Fawzy G. Sherif, Ruth E. Gallagher
  • Patent number: 4999066
    Abstract: A fast-setting magnesium phosphate one-component adhesive/grout is used to bond tiles, e.g. ceramic tiles, to a substrate, e.g. sheet-rock. The grout comprises an activator prepared by e.g., mixing diatomaceous earth with at least a sufficient amount of an ammonium phosphate solution to form a paste then heating the paste to coat the pores of the diatomaceous earth and result in a dry solid which is then milled to yield the activator, magnesium oxide, diammonium phosphate, boric acid, and sufficient water to form a paste. This grout is applied to the surfaces to be bonded which are then brought together to form a composite which is allowed to set at ambient temperatures forming a durable bond in about three hours.
    Type: Grant
    Filed: October 3, 1986
    Date of Patent: March 12, 1991
    Assignee: Stauffer Chemical Company
    Inventor: Fawzy G. Sherif