Of Zinc, Cadmium, Or Mercury Patents (Class 502/253)
-
Patent number: 5364825Abstract: Multimetal oxide compositions of the formula I[X.sup.1.sub.a X.sup.2.sub.b O.sub.x ].sub.p [X.sup.3.sub.c X.sup.4.sub.d X.sup.5.sub.e X.sup.6.sub.f X.sup.7.sub.g X.sup.2.sub.h O.sub.y ].sub.q(I)whereX.sup.1 is bismuth, tellurium, antimony, tin and/or copper,X.sup.2 is molybdenum and/or tungsten,X.sup.3 is an alkali metal, thallium and/or samarium,X.sup.4 is an alkaline earth metal, nickel, cobalt, copper, manganese, zinc, tin, cadmium and/or mercury,X.sup.5 is iron, chromium, cerium and/or vanadium,X.sup.6 is phosphorus, arsenic, boron and/or antimony,X.sup.7 is a rare-earth metal, titanium, zirconium, niobium, tantalum, rhenium, ruthenium, rhodium, silver, gold, aluminum, gallium, indium, silicon, germanium, lead, thorium and/or uranium,a is from 0.01 to 8,b is from 0.Type: GrantFiled: May 21, 1993Date of Patent: November 15, 1994Assignee: BASF AktiengesellschaftInventors: Hans-Peter Neumann, Hans Martan, Hermann Petersen, Walter Doerflinger
-
Patent number: 5358921Abstract: Hydrogen sulfide is removed from a fluid stream containing hydrogen sulfide by contacting the fluid stream under suitable absorbing conditions with an absorbing composition consisting essentially of zinc oxide and silica. Additionally, the absorbing composition may contain binders and may be promoted, preferably with nickel oxide.Type: GrantFiled: May 3, 1993Date of Patent: October 25, 1994Assignee: Phillips Petroleum CompanyInventors: Dennis R. Kidd, Gary A. Delzer, Donald H. Kubicek, Paul F. Schubert
-
Patent number: 5346871Abstract: The present invention is directed to a novel catalyst composition and its use in the dehydrogenation of paraffins to olefins. The catalyst comprises an alloy of a Group VIII noble metal and a metal selected from the group consisting of zinc and gallium on a support selected from the group consisting of silica, zinc oxide modified silica and zinc oxide modified silica-pillared clays when said alloy is a zinc alloy, and silica, gallium oxide modified silica and gallium oxide modified silica-pillared clays when said alloy is a gallium alloy. The instant catalyst is an active and selective catalyst for the catalytic dehydrogenation of paraffins to olefins, especially gaseous paraffins, having the added benefit of retaining high activity and selectivity even following repeated regeneration by calcination in oxygen containing gas at temperatures of 450.degree. C. to 650.degree. C., preferably 450.degree. C. to 500.degree. C.Type: GrantFiled: March 9, 1993Date of Patent: September 13, 1994Assignee: Exxon Research & Engineering Co.Inventors: John L. Robbins, Elise Marucchi-Soos, Jack W. Johnson, John F. Brody
-
Patent number: 5310717Abstract: Provided is an improved process for removing sulfur compounds from sulfur contaminated fluid streams by contacting such fluid streams with an absorbent composition comprising zinc oxide, silica, and molybdenum disulfide. The absorbent composition comprising zinc oxide, silica, and molybdenum disulfide is a novel composition which has the desirable properties of high sulfur loading capacity and the ability to be contacted with the hydrogen sulfide containing fluid stream for the removal of such hydrogen sulfide from said fluid stream with a minimum amount of sulfur dioxide slippage. An additional embodiment of the disclosed invention includes a method for minimizing the amount of extrusion die wear during the production of the zinc oxide based absorbent compositions. Extrusion die wear is reduced by adding a quantity of molybdenum disulfide to the zinc oxide absorbent in an amount which provides desirable lubricating properties such that extrusion die wear is reduced during the manufacture of the composition.Type: GrantFiled: December 11, 1992Date of Patent: May 10, 1994Assignee: Phillips Petroleum CompanyInventors: Gary A. Delzer, Randall A. Porter
-
Patent number: 5306685Abstract: Hydrogen sulfide is removed from a gas by contacting it with an absorbent composition consisting essentially of a mixed oxide of iron, zinc and nickel and an inorganic binder.Type: GrantFiled: May 7, 1993Date of Patent: April 26, 1994Assignee: Phillips Petroleum CompanyInventor: Gyanesh P. Khare
-
Patent number: 5283043Abstract: There is provided a method for preparing organic-swelled layered silicate by direct crystallization from an alkaline reaction mixture containing a source of silicon oxide and organic onium compound, e.g., a cetyltrimethylammonium salt. Layered silicates containing interlayer polymeric chalcogenide are prepared by contacting the organic-swelled layered silicate with a source of polymeric chalcogenide, e.g., tetraethylorthosilicate.Type: GrantFiled: April 16, 1992Date of Patent: February 1, 1994Assignee: Mobil Oil Corp.Inventors: Ivy D. Johnson, Michael E. Landis
-
Patent number: 5281440Abstract: A method of depositing a metal film on a silyl hydride surface of a solid such as silica gel, the solid normally having hydroxyl groups, the metal with a valence of zero being deposited on the surface by reaction of a metal ion in a solution with the hydrogens of the silyl hydrides. The above method is used to easily remove metal ions from a solution and also the method is a basis for determining the number of silyl hydride groups on the surface of the solid.Type: GrantFiled: April 1, 1992Date of Patent: January 25, 1994Assignee: The University of ToledoInventors: James L. Fry, Durgesh V. Nadkarni
-
Patent number: 5256616Abstract: A bead having an exterior surface which is at least partially coated with a material that under illumination and in the presence of air is capable of accelerating the oxidation of organic compounds floating on water. The coated bead is water floatable and has an equivalent diameter of less than about 2 mm, preferably on the order of 10-30 microns. These coated beads can be used to accelerate under illumination oxidation of a floating oil film (e.g. from an oil spill) by dispersing the coated beads in the film and allowing them to be exposed to solar illumination and oxygen.Type: GrantFiled: December 14, 1990Date of Patent: October 26, 1993Assignee: Board of Regents, The University of Texas SystemInventors: Adam Heller, James R. Brock
-
Patent number: 5250487Abstract: The invention relates to a process for the preparation of a catalyst which contains palladium and/or compounds thereof and alkali metal compounds, and additionally cadmium compounds and/or gold and/or compounds thereof, on support particles which have been pressed from SiO.sub.2 or an iO.sub.2 -Al.sub.2 O.sub.3 mixture with the aid of a binder which comprisesa) washing the roasted support particles with an acid which does not react with SiO.sub.2 or SiO.sub.2 -Al.sub.2 O.sub.3 mixtures, until no further cations of the binder employed during pressing of the support particles are released from the support particles;b) then impregnating the support particles with palladium, and gold or cadmium;c) then bringing the impregnated support particles into contact with a solution of a base at least until the thickness of the nobel metal shell generated in this way on the support particles no longer changes substantially; andd) then impregnating the support particles with an alkali metal compound.Type: GrantFiled: June 18, 1992Date of Patent: October 5, 1993Assignee: Hoechst AktiengesellschaftInventors: Peter Wirtz, Karl-Fred Worner, Friedrich Wunder, Klaus Fichler, Gunter Roscher, Ioan Nicolau
-
Patent number: 5208201Abstract: A catalyst which comprises zinc, together with an effective amount of a platinum group metal on a support which is a material having the silicalite structure, the framework of said material consisting essentially of silicon and oxygen atoms or of silicon, zinc and oxygen atoms. There is also provided a process for the dehydrogenation of a C.sub.2 to C.sub.10 paraffin to yield an alkene product which process comprises contacting the paraffin under dehydrogenation conditions with a catalyst according to the invention.Type: GrantFiled: December 16, 1991Date of Patent: May 4, 1993Assignee: The British Petroleum Company p.l.c.Inventors: Sami A. I. Barri, Rabaab Tahir
-
Patent number: 5130288Abstract: The composition of this invention is a silicated zinc oxide that comprises a co-gelled mixture comprising zinc oxide and silica. This co-gelled mixture is used as a sorbent for removing sulfur compounds from sulfur containing fluids by contacting such fluids with the sorbent. The composition can be prepared by a silicating process wherein the compositon is manufactured by silicating zinc oxide to form a co-gelled mixture.Type: GrantFiled: March 7, 1991Date of Patent: July 14, 1992Assignee: Phillips Petroleum CompanyInventors: Gary A. Delzer, Dennis R. Kidd
-
Patent number: 5041406Abstract: Methyl chloride is produced by contacting methanol and hydrogen chloride in the vapor phase in the presence of KZnCl.sub.3 supported on silica. The process produces methyl chloride in good yield with minimal formation of dimethyl ether as a by-product.Type: GrantFiled: February 28, 1990Date of Patent: August 20, 1991Assignee: The Dow Chemical CompanyInventors: A. Dale Harley, Michael T. Holbrook
-
Patent number: 4862836Abstract: A method is provided of operating an internal combustion engine comprising subjecting a hydrocarbon fuel of relatively low octane number to conversion at elevated temperatures by passing it through a reaction zone containing a fuel system of unidirectional, e.g., substantially parallel, channels with rigid walls, e.g., a monolith or series of monoliths, at least the internal surfaces of which contain an aluminosilicate zeolite catalyst having a Constraint Index in the approximate range of about 1 to 12 and a silica/alumina ratio in a range of about 20 to 5000, e.g., ZSM-5 preferably containing gallium or zinc, such that the fuel leaving said channels has an increased octane number, and passing the fuel to the combustion chamber of said engine.Type: GrantFiled: December 15, 1987Date of Patent: September 5, 1989Assignee: Mobil Oil CorporationInventors: Nai Yuen Chen, Thomas F. Degnan, Sr.
-
Patent number: 4636485Abstract: Pt catalyst on a substrate provides an air purification particularly for carbon oxide contained in the inhaled air is caused to react with air oxygen on the surface of carbon oxide catalysts and thus removed. But it is desirable for many air filter applications to eliminate, in addition to CO, other harmful gases from the air also. The Pt catalyst used as gaskmask filter material offers, particularly, but little protection additionally against acid gases. Due to an additional impregnation with the oxides of amine-forming heavy metals, the separating powers for acid gases is increased extraordinarily without reducing the capability of the Pt catalyst to oxidize CO catalytically. There even results an intensification of the respective effectiveness.Type: GrantFiled: February 13, 1985Date of Patent: January 13, 1987Assignee: Dragerwerk AGInventor: Carl-Ernst van der Smissen
-
Patent number: 4521529Abstract: A catalyst capable of cracking kerosene under lower pressure and temperature comprising (A) kerosene; (B) metal powder mixture of chromium powder, copper powder, lead powder, zinc powder, nickel powder, manganese powder in an amount of 12 to 13 parts by weight per 100 parts by weight of said kerosene; (C) sulfuric acid in an amount of 15 to 30 parts by weight per 100 parts by weight of said kerosene; (D) inorganic powder mixture of aluminum oxide powder, serpentine powder, alum powder, magnesium oxide powder, limestone powder, slake lime powder, silica powder, and granite powder in an amount of 150 to 170 parts by weight per 100 parts by weight of said kerosene.Type: GrantFiled: September 4, 1984Date of Patent: June 4, 1985Assignee: Son Su KungInventor: C. H. Hsie
-
Patent number: 4507400Abstract: A catalyst composition comprising a cadmium component, a thorium component and a support material having acidic properties is disclosed.Type: GrantFiled: September 28, 1983Date of Patent: March 26, 1985Assignee: Standard Oil Company (Indiana)Inventors: Jeffrey T. Miller, Thomas D. Nevitt
-
Patent number: 4499203Abstract: A catalyst for use in the hydrotreatment of hydrocarbons comprises a carrier and at least one catalytic metal selected from vanadium, molybdenum, tungsten, nickel, cobalt and/or iron; this catalyst is in the form of a plurality of juxtaposed agglomerates of acicular platelets, oriented radially to each other. It is prepared from agglomerates of activated alumina subjected to reaction with an acid and a compound providing an anion able to combine with aluminum ions in solution.Type: GrantFiled: June 17, 1983Date of Patent: February 12, 1985Assignee: Societe Francaise des Produits pour Catalyse Pro-CatalyseInventors: Herve Toulhoat, Yves Jacquin, Thierry Dupin
-
Patent number: 4490478Abstract: An improved olefin disproportionation catalyst produced by contacting an inorganic refractory oxide containing a catalytic amount of tungsten oxide or molybdenum oxide with a promoting amount of at least one elemental metal selected from zinc and manganese.Type: GrantFiled: July 29, 1983Date of Patent: December 25, 1984Assignee: Phillips Petroleum CompanyInventors: Robert L. Banks, Simon G. Kukes
-
Patent number: 4469814Abstract: An improved catalyst for conversion of oxygen-containing aliphatics to hydrocarbons is a silica xerogel having a layer of an aluminum compound chemically bonded onto its surface, having a maximum pore diameter of 1.1 nm and having substantially only protons and/or transition metal cations as electrical charge balancing species. The catalyst is very specific for the production of aromatics.Type: GrantFiled: November 22, 1983Date of Patent: September 4, 1984Assignee: Coal Industry (Patents) LimitedInventors: Joseph G. Robinson, David I. Barnes
-
Patent number: 4456694Abstract: Olefins, carbon monoxide and hydrogen are catalytically reacted with rhodium catalysts to produce alcohols in a single step reaction.Type: GrantFiled: September 29, 1982Date of Patent: June 26, 1984Assignee: Standard Oil CompanyInventors: M. W. Blaskie, J. R. Fox, F. A. Pesa
-
Patent number: 4410453Abstract: The performance of a silver on alumina catalyst for the oxidation of ethylene to ethylene oxide is improved by the inclusion, in the raw mix for the carrier of an oxide, or oxide precursor, of zinc, lanthanum, or magnesium in the amount of 7 to 40%, calculated as the oxide.Type: GrantFiled: February 1, 1982Date of Patent: October 18, 1983Assignee: Norton Co.Inventors: Joseph R. Kiovsky, George W. Young, Ramzi Y. Saleh