Patents by Inventor Frederick C. Wilhelm
Frederick C. Wilhelm 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: 5399769Abstract: This invention relates to a process for producing a nonequilibrium distribution of methylamines by the catalyzed reaction of methanol and/or dimethyl ether with ammonia and by the catalytic reforming of a methylamine containing feedstock. One process selectively affords a reaction product enriched in mono and dimethylamines and low in trimethylamine, at high conversion of methanol or dimethylether. A variation of the process effects reforming a methylamine containing feedstock, optionally containing ammonia over a catalyst. The key to achieving this low TMA selectivity at high conversion resides in the use of a microporous zeolite, preferably chabazite, catalyst having a geometric selectivity index (GSI) less about 3, a shape selectivity index (SSI) greater than about 5 and a sorption capacity for 1-PrOH of at least 0.5 mmol/g.Type: GrantFiled: June 3, 1994Date of Patent: March 21, 1995Assignee: Air Products and Chemicals, Inc.Inventors: Frederick C. Wilhelm, Gene E. Parris, Brent A. Aufdembrink, Thomas R. Gaffney
-
Patent number: 5300271Abstract: The present invention is directed to active compositions, such as adsorbents and catalysts, which comprise cuprous compounds dispersed on amorphous oxide or carbon macroporous supports. The compositions are prepared by impregnating cupric compounds on pretreated supports with the aid of an aqueous solution of an ammonium salt of a di- or polycarboxylic acid dispersant, such as ammonium citrate, followed by activation of the cupric compound or reduction of the cupric compound to the corresponding cuprous compound. Methods of synthesis and processes utilizing the compositions are also disclosed.Type: GrantFiled: April 14, 1992Date of Patent: April 5, 1994Assignee: Air Products and Chemicals, Inc.Inventors: Timothy C. Golden, Wilbur C. Kratz, Frederick C. Wilhelm
-
Patent number: 5258571Abstract: The present invention is directed to a process for adsorptive separation of carbon monoxide or olefins from gas mixtures using adsorbents, which comprise cuprous compounds dispersed on amorphous oxide or carbon macroporous supports. The compositions are prepared by impregnating cupric compounds on, preferably pretreated, supports with the aid of an aqueous solution of an ammonium salt of a di- or polycarboxylic acid dispersant, such as ammonium citrate, followed by reduction of the cupric compound to the corresponding cuprous compound. The reduction can be performed either by the use of elevated temperature or by the use of a reducing gas preferably carbon monoxide at relatively low temperatures up to 150.degree. C. Methods of synthesis are also disclosed.Type: GrantFiled: September 14, 1992Date of Patent: November 2, 1993Assignee: Air Products and Chemicals, Inc.Inventors: Timothy C. Golden, Wilbur C. Kratz, Frederick C. Wilhelm, Ronald Pierantozzi, Andrzej Rokicki
-
Patent number: 5175137Abstract: The present invention is directed to a process for adsorptive separation of carbon monoxide or olefins from gas mixtures using adsorbents, which comprise cuprous compounds dispersed on amorphous oxide or carbon macroporous supports. The compositions are prepared by impregnating cupric compounds on, preferably pretreated, supports with the aid of an aqueous solution of an ammonium salt of a di- or polycarboxylic acid dispersant, such as ammonium citrate, followed by reduction of the cupric compound to the corresponding cuprous compound. The reduction can be performed either by the use of elevated temperature or by the use of a reducing gas preferably carbon monoxide at relatively low temperatures up to 150.degree. C. Methods of synthesis are also disclosed.Type: GrantFiled: August 8, 1991Date of Patent: December 29, 1992Assignee: Air Products and Chemicals, Inc.Inventors: Timothy C. Golden, Wilbur C. Kratz, Frederick C. Wilhelm, Ronald Pierantozzi, Andrzej Rokicki
-
Patent number: 5126310Abstract: The present invention is directed to active compositions, such as adsorbents and catalysts, which comprise cuprous compounds dispersed on amorphous oxide or carbon macroporous supports. The compositions are prepared by impregnating cupric compounds on pretreated supports with the aid of an aqueous solution of an ammonium salt of a di- or polycarboxylic acid dispersant, such as ammonium citrate, followed by activation of the cupric compound or reduction of the cupric compound to the corresponding cuprous compound. Methods of synthesis and processes utilizing the compositions are also disclosed.Type: GrantFiled: August 23, 1990Date of Patent: June 30, 1992Assignee: Air Products and Chemicals, Inc.Inventors: Timothy C. Golden, Wilbur C. Kratz, Frederick C. Wilhelm
-
Patent number: 4451687Abstract: An alkylaromatic hydrocarbon feed stream is hydrodealkylate in the presence of a catalyst having a reduced rate of deactivation, or a lower coking tendency. The catalyst comprises a gamma-alumina support containing 8 to 12 wt. % Cr.sub.2 O.sub.3 and 0.2 to 0.7 wt. % Na.sub.2 O and having a surface area from 175 to 275 m.sup.2 /g and a pore volume from 0.5 to 1.2 cc/g. The catalyst is also useful in the hydrodesulfurization of thiophene containing hydrocarbon streams.Type: GrantFiled: October 7, 1983Date of Patent: May 29, 1984Assignee: Air Products and Chemicals, Inc.Inventors: Francis P. Daly, Frederick C. Wilhelm
-
Patent number: 4436836Abstract: An alkylaromatic hydrocarbon feed stream is hydrodealkylate in the presence of a catalyst having a reduced rate of deactivation, or a lower coking tendency. The catalyst comprises a gamma-alumina support containing 8 to 12 wt % Cr.sub.2 O.sub.3 and 0.2 to 0.7 wt % Na.sub.2 O and having a surface area from 175 to 275 m.sup.2 /g and a pore volume from 0.5 to 1.2 cc/g. The catalyst is also useful in the hydrodesulfurization of thiophene containing hydrocarbon streams.Type: GrantFiled: July 6, 1982Date of Patent: March 13, 1984Assignee: Air Products and Chemicals, Inc.Inventors: Francis P. Daly, Frederick C. Wilhelm
-
Patent number: 4130597Abstract: Dehydrogenatable hydrocarbons are dehydrogenated by contacting them, at dehydrogenation conditions, with a catalytic composite comprising a combination of catalytically effective amounts of a platinum or palladium component, a rhodium component, and a lead component with a porous carrier material. A specific example of the catalytic composite disclosed herein is a combination of a platinum or palladium component, a rhodium component, a lead component, and an alkali or alkaline earth component with a porous carrier material, wherein substantially all of the platinum or palladium component and the rhodium component are present therein as the corresponding elemental metals and substantially all of the lead component and the alkali or alkaline earth component are present therein in an oxidation state above the elemental metal, and wherein the composite contains about 0.01 to about 2 wt. % platinum or palladium, about 0.01 to about 2 wt. % rhodium, about 0.1 to about 5 wt.Type: GrantFiled: July 21, 1977Date of Patent: December 19, 1978Inventor: Frederick C. Wilhelm
-
Patent number: 4083806Abstract: Hydrocarbons are converted by contacting them in a substantially sulfur-free environment at hydrocarbon conversion conditions with an acidic, sulfur-free trimetallic catalytic composite comprising a combination of catalytically effective amounts of a platinum group component, a tin or lead component, a nickel component and a halogen component with a porous carrier material. The platinum group component, tin or lead component, nickel component, and halogen component are present in the trimetallic 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. % tin or lead, about 0.01 to about 5 wt. % nickel, and about 0.1 to about 3.5 wt. % halogen.Type: GrantFiled: June 17, 1976Date of Patent: April 11, 1978Assignee: Universal Oil Products CompanyInventor: Frederick C. Wilhelm
-
Patent number: 4053389Abstract: 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 or paladium component, a rhodium component, a rhenium component, a lead component, and a halogen component with a porous carrier material. The platinum or paladium component, rhodium component, rhenium component, lead component, and halogen component are present in the multimetallic catalyst in amounts respectively, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum or palladium metal, about 0.01 to about 2 wt. % rhodium, about 0.01 to about 2 wt. % rhenium, about 0.1 to about 3.5 wt. % halogen, and an atomic ratio of lead to platinum or palladium of about 0.05:1 to about 0.9:1.Type: GrantFiled: September 8, 1975Date of Patent: October 11, 1977Assignee: UOP Inc.Inventor: Frederick C. Wilhelm
-
Patent number: 4046715Abstract: A dehydrogenatable hydrocarbon is dehydrogenated by contacting the hydrocarbon, hydrogen, and water or a water-producing substance, at dehydrogenation conditions, with a nonacidic catalytic composite comprising a combination of catalytically effective amounts of a platinum group metal component, a nickel component, a Group IVA metallic component, and an alkali or alkaline earth component with a porous carrier material. A specific example of the nonacidic, multimetallic catalytic composite disclosed herein is a combination of a platinum metal component, a nickel component, a germanium component, and an alkali or alkaline earth component with an alumina carrier material. The amounts of the catalytically active components contained in this last composite are, on an elemental basis, 0.01 to 2 wt. % platinum, 0.01 to 5 wt. % nickel, 0.01 to 5 wt. % germanium, and 0.1 to 5 wt % of the alkali or alkaline earth metal.Type: GrantFiled: February 5, 1976Date of Patent: September 6, 1977Assignee: Universal Oil Products CompanyInventor: Frederick C. Wilhelm
-
Patent number: 4028225Abstract: Hydrocarbons are converted by contacting them at hydrocarbon conversion conditions with a sulfided acidic multimetallic catalytic composite comprising a combination of catalytically effective amounts of a platinum or palladium component, a rhodium component, a component with a porous carrier material. The platinum or palladium component, rhodium component, lead component, halogen component, and sulfur component are present in the multimetallic catalyst in amounts respectively, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum or palladium metal, about 0.01 to about 2 wt. % rhodium, an atomic ratio of lead to platinum or palladium of about 0.05:1 to about 0.9:1, about 0.1 to about 3.5 wt. % halogen, and about 0.01 to about 1 wt. % sulfur.Type: GrantFiled: September 8, 1975Date of Patent: June 7, 1977Assignee: UOP Inc.Inventor: Frederick C. Wilhelm
-
Patent number: 3998900Abstract: Dehydrogenatable hydrocarbons are dehydrogenated by contacting them, under dehydrogenation conditions, with a dehydrogenation catalyst comprising a combination of a catalytically effective amount of an alkali or alkaline earth component with a catalytic composite consisting essentially of a tin component in combination with a platinum component on a carrier material, wherein the catalytic composite is prepared by the method which comprises: (a) impregnating a high surface area porous carrier material with a solution of a complex chlorostannate (II) chloroplatinate anionic species, the solution being stabilized in contact with the carrier material with an aqueous halogen acid; and thereafter, (b) drying and calcining the impregnated carrier material. For the dehydrogenation of normal paraffin hydrocarbons, this dehydrogenation catalyst preferably contains, on an elemental basis, about 0.01 to about 2 wt. % platinum, about 0.01 to about 5 wt. % tin, and about 0.01 to about 5 wt.Type: GrantFiled: August 27, 1974Date of Patent: December 21, 1976Assignee: Universal Oil Products CompanyInventor: Frederick C. Wilhelm
-
Patent number: 3972805Abstract: Hydrocarbons are converted by contacting them in a substantially sulfur-free environment at hydrocarbon conversion conditions with an acidic, sulfur-free trimetallic catalytic composite comprising a combination of catalytically effective amounts of a platinum group component, a tin or lead component, a nickel component and a halogen component with a porous carrier material. The platinum group component, tin or lead component, nickel component, and halogen component are present in the trimetallic 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. % tin or lead, about 0.01 to about 5 wt. % nickel, and about 0.1 to about 3.5 wt. % halogen.Type: GrantFiled: January 6, 1975Date of Patent: August 3, 1976Assignee: Universal Oil Products CompanyInventor: Frederick C. Wilhelm
-
Patent number: 3966895Abstract: A dehydrogenatable hydrocarbon is dehydrogenated by contacting the hydrocarbon, hydrogen, and water or a water-producing substance, at dehydrogenation conditions, with a nonacidic catalytic composite comprising a combination of catalytically effective amounts of a platinum group metal component, a nickel component, a Group IVA metallic component, and an alkali or alkaline earth component with a porous carrier material. A specific example of the nonacidic, multimetallic catalytic composite disclosed herein is a combination of a platinum metal component, a nickel component, a germanium component, and an alkali or alkaline earth component with an alumina carrier material. The amounts of the catalytically active components contained in this last composite are, on an elemental basis, 0.01 to 2 wt. % platinum, 0.01 to 5 wt. % nickel, 0.01 to 5 wt. % germanium, and 0.1 to 5 wt. % of the alkali or alkaline earth metal.Type: GrantFiled: August 27, 1974Date of Patent: June 29, 1976Assignee: Universal Oil Products CompanyInventor: Frederick C. Wilhelm
-
Patent number: 3951868Abstract: Hydrocarbons are converted by contacting them at hydrocarbon conversion conditions with a bimetallic acidic catalytic composite comprising a combination of catalytically effective amounts of a platinum group component, an indium component and a halogen component with a porous carrier material. The platinum group component and halogen component are present in the bimetallic catalyst in amounts respectively, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal and about 0.1 to about 3.5 wt. % halogen. The indium component is present in amounts corresponding to an atomic ratio of indium to platinum group metal of about 0.1:1 to about 1:1.Type: GrantFiled: March 14, 1975Date of Patent: April 20, 1976Assignee: Universal Oil Products CompanyInventor: Frederick C. Wilhelm
-
Patent number: 3940329Abstract: Hydrocarbons are converted by contacting them at hydrocarbon conversion conditions with a trimetallic acidic catalytic composite comprising a combination of catalytically effective amounts of a platinum or palladium component, a rhodium component, a bismuth component, and a halogen component with a porous carrier material. The platinum or palladium component, rhodium component, and halogen component are present in the trimetallic catalyst in amounts respectively, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum or palladium, about 0.01 to about 2 wt. % rhodium, and about 0.1 to about 3.5 wt. % halogen. The bismuth component is present in amounts corresponding to an atomic ratio of bismuth to platinum or palladium of about 0.1:1 to about 1:1.Type: GrantFiled: August 1, 1974Date of Patent: February 24, 1976Assignee: Universal Oil Products CompanyInventor: Frederick C. Wilhelm