Of Tin Patents (Class 502/352)
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Patent number: 6583085Abstract: A method for manufacturing an indium-tin-iron catalyst that is used to obtain carbon nanocoils that have an external diameter of 1000 nm or less, the method comprising a first process that forms an organic solution by mixing an indium-containing organic compound and a tin-containing organic compound with an organic solvent, a second process that forms an organic film by coating a substrate with the thus obtained organic solution, a third process that forms an indium-tin film by baking this organic film, and a fourth process that forms an iron film on the surface of this indium-tin film.Type: GrantFiled: October 26, 2001Date of Patent: June 24, 2003Assignees: Daiken Chemical Co., Ltd.Inventors: Yoshikazu Nakayama, Akio Harada
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Patent number: 6548444Abstract: A carbonylation catalyst useful for producing esters and carboxylic acids from reactants including lower alkyl alcohols, lower alkyl alcohol generating compounds, such as ether and ester derivatives of the alcohols, and mixtures thereof in a vapor phase carbonylation process. The catalyst includes a solid component having a catalytically effective amount of iridium and tin which are associated with a solid catalyst support material and a vaporous halide component.Type: GrantFiled: June 20, 2001Date of Patent: April 15, 2003Assignee: Eastman Chemical CompanyInventors: Joseph Robert Zoeller, Andy Hugh Singleton, Gerald Charles Tustin, Donald Lee Carver
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Patent number: 6548447Abstract: A process for the production of a mono-olefin from a gaseous paraffinic hydrocarbon having at least two carbon atoms or mixtures thereof comprising reacting the hydrocarbons and molecular oxygen in the presence of a platinum catalyst. The catalyst consists essentially of platinum modified with Sn or Cu and supported on a ceramic monolith.Type: GrantFiled: February 19, 1999Date of Patent: April 15, 2003Assignee: Regents of the University of MinnesotaInventors: Chikafumi Yokoyama, Sameer S. Bharadwaj, Lanny D. Schmidt
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Publication number: 20030054956Abstract: The invention relates to modified supported catalysts based on Re2O7/&ggr;-Al2O3 for use in the preparation of cycloalkadienes in a metathesis reaction, a process for preparing cycloalkadienes in the presence of these supported catalysts and the use of the resulting cycloalkadienes for the preparation of fragrances.Type: ApplicationFiled: August 23, 2002Publication date: March 20, 2003Inventors: Ingo Wohrle, Aurelia Reckziegel, Peter Esser, Martin Sturmann
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Patent number: 6534440Abstract: This invention provides a process for the activation of a metallic palladium containing catalyst which is useful for the direct oxidation of hydrogen by oxygen to hydrogen peroxide, by treating the catalyst with an oxidising agent in order to at least partially oxidise the metallic palladium contained in the catalyst to palladium (TT) oxide. The selectivity and yield of the catalyst for hydrogen peroxide are observed to increase substantially and the hydrogen peroxide decomposition activity of the catalyst is drastically reduced.Type: GrantFiled: November 29, 2000Date of Patent: March 18, 2003Assignee: Council of Scientific and Industrial ResearchInventors: Vasant Ramchandra Choudhary, Abaji Govind Gaikwad, Subhash Dwarkanath Sansare
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Publication number: 20030032552Abstract: A carbonylation catalyst useful for producing esters and carboxylic acids from reactants including lower alkyl alcohols, lower alkyl alcohol generating compositions such as ether and ester derivatives of the alcohols, and mixtures thereof in a vapor phase carbonylation process, said catalyst includes a solid component having a catalytically effective amount of platinum and tin associated with a solid catalyst support material and a vaporous halide promoter component.Type: ApplicationFiled: June 19, 2001Publication date: February 13, 2003Inventors: Joseph Zoeller, Andy Singleton, Gerald Tustin, Donald Carver
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Patent number: 6506356Abstract: A catalyst for recovering elemental sulfur by the selective oxidation of hydrogen sulfide is represented by the following chemical formula: VaTibXcOf wherein, a is such a mole number that vanadium amounts to 5-40% by weight based on the total weight of the catalyst; b is such a mole number that titanium amounts to 5-40% by weight based on the total weight of the catalyst; X is an element selected from the group consisting of Fe, Mn, Co, Ni, Sb and Bi; c is such a mole number that X amounts to 15% by weight or less based on the total weight of the catalyst; and f is such a mole number that oxygen is contained to the final 100% by weight. The catalyst can recover elemental sulfur at high rates for a long period of time without being deteriorated in activity. The high catalytic activity is maintained even when excess water is present in the reaction gas.Type: GrantFiled: October 10, 2000Date of Patent: January 14, 2003Assignees: Envichem Co., Ltd., Pohang University of Science & TechnologyInventors: Jong Shik Chung, Moon Young Shin
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Patent number: 6495487Abstract: A novel catalyst and the use thereof in a reforming process is disclosed. The catalyst comprises a refractory inorganic oxide, platinum-group metal, Group IVA(IUPAC 14) metal, indium and lanthanide-series metal. Utilization of this catalyst in the conversion of hydrocarbons, especially in reforming, results in significantly improved selectivity to the desired gasoline or aromatics product.Type: GrantFiled: December 10, 1999Date of Patent: December 17, 2002Assignee: UOP LLCInventor: Paula L. Bogdan
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Patent number: 6451730Abstract: A process for the preparation of a promoted VSbOx catalyst comprising mixing a vanadium compound, at least a first portion of an antimony compound, and at least a portion of the support material to form a slurry, heating the slurry to remove the water, calcining the dried slurry to form a catalyst precursor, combining the catalyst precursor with a second aqueous sol containing the remaining portion of the support material and the remaining portion of the antimony compound to form a second slurry, drying the second slurry to remove the water and calcining the dried mixture to form the finished catalyst.Type: GrantFiled: June 27, 1997Date of Patent: September 17, 2002Assignee: The Standard Oil CompanyInventors: Maria Strada Friedrich, Michael J. Seely, Dev Dhanaraj Suresh
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Publication number: 20020127386Abstract: A method for manufacturing a porous structured material comprises the steps of: preparing a reactant solution that contains a metal compound and a surfactant, coating a substrate with the reactant solution, and holding the substrate in an atmosphere containing water vapor. In a thin film of an oxide having a porous structure, a surfactant is retained in the pores, and the pore walls contain tin oxide crystals.Type: ApplicationFiled: February 4, 2002Publication date: September 12, 2002Inventors: Miki Ogawa, Takashi Noma
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Publication number: 20020103079Abstract: A process for the preparation of a catalyst is described, said catalyst comprising at least one inorganic refractory support, at least one halogen or halogenated compound at a content greater than 0.1% by weight, at least one metal from group VIII of the periodic classification (platinum, palladium, nickel and ruthenium) and at least one additional metal M selected from germanium, tin, lead, iron, titanium and chromium. The process is characterised in that said metal M is introduced in the form of at least one orqanometallic complex. The catalyst prepared in accordance with the invention may be used for dehydrogenation reactions, particularly of paraffinic hydrocarbons and olefinic hydrocarbons.Type: ApplicationFiled: August 23, 1996Publication date: August 1, 2002Inventors: FABIENNE LEPELTIER, SYLVIE ROBERT, JEAN-PAUL BOITIAUX, BLAISE DIDILLON, OLIVER CLAUSE
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Patent number: 6426312Abstract: The present invention is an air purifying matrix to remove, reduce or detoxify organic pollutants. The matrix has an inert substrate, a photoreactive semiconductor material, and aqueous particles. The inert substrate is water absorbent, transparent to ultraviolet light, able to withstand extended periods of exposure to all wavelengths of ultraviolet light side of the spectrum without decomposing or altering the structure thereof, able to withstand high concentrations of hydroxyl radicals without decomposing or altering the structure thereof, and in the form of an expanded granular type with spaces therein. The photoreactive semiconductor material is crystallized within the spaces. And the aqueous particles are within the spaces to form photoreactive metal semiconductor material nano-reactors within the matrix. These nano-reactors generate high concentrations of hydroxyl radicals which surround and diffuse through the matrix, and remove, reduce or detoxify organic pollutants within and surrounding the matrix.Type: GrantFiled: September 18, 2000Date of Patent: July 30, 2002Inventor: Donald Lawrence Lush
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Publication number: 20020079476Abstract: Nanostructured non-equilibrium, non-stoichiometric materials and device made using the nanonostructured non-equilibrium non-stoichiometric materials are provided. Applications and methods of implementing such devices and applications are also provided. More specifically, the specifications teach the use of nanostructured non-equilibrium, non-stoichiometric materials in polymer and plastic filler applications, electrical devices, magnetic products, fuels, biomedical applications, markers, drug delivery, optical components, thermal devices, catalysts, combinatorial discovery of materials, and various manufacturing processes.Type: ApplicationFiled: November 27, 2001Publication date: June 27, 2002Inventors: Tapesh Yadav, Ming Au, Bijan Miremadi, John Freim, Yuval Avniel, Roger Dirstine, John Alexander, Evan Franke
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Publication number: 20020082164Abstract: An exhaust gas catalyst system, comprising: a substrate; and a nitrogen oxides adsorber deposited on said substrate, the nitrogen oxides adsorber comprising: a porous support; and a material loaded on said porous support comprising: a NO oxidation catalyst, at least one alkali material, and at least one alkali metal barrier.Type: ApplicationFiled: January 11, 2001Publication date: June 27, 2002Inventors: Danan Dou, Owen H. Bailey
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Publication number: 20020045544Abstract: A novel supported bimetallic catalyst comprises a group VIII metal such as platinum, and tin, at least a portion of which interacts strongly with the group VIII metal in the catalyst in the reduced state. In the partially oxidized state, the catalyst of the invention contains at least 10% of tin in the form of a reduced tin species with oxidation state 0, said species having an isomer shift in the range 0.80 to 2.60 mm/s and a quadrupolar splitting in the range 0. 65 to 2.00 mm/s.Type: ApplicationFiled: August 23, 2001Publication date: April 18, 2002Applicant: Institut Francais du PetroleInventors: Fabienne Le Peltier, Blaise Didillon, Jean-Claude Jumas, Josette Olivier-Fourcade
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Patent number: 6346228Abstract: The present invention relates to a novel hydrophobic multicomponent catalyst useful in the direct oxidation of hydrogen to hydrogen peroxide and to a method for the preparation of such catalyst. More specifically, this invention relates to a novel hydrophobic muticomponent catalyst comprising a hydrophobic polymer membrane deposited on a Pd containing acidic catalyst, useful for the direct oxidation of hydrogen by oxygen to hydrogen peroxide, an a method for preparing the same.Type: GrantFiled: January 19, 2000Date of Patent: February 12, 2002Assignee: Council of Scientific and Industrial ResearchInventors: Vasant Ramchandra Choudhary, Subhash Dwarkanath Sansare, Abaji Govind Gaikwad
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Publication number: 20020016250Abstract: The surface of a substrate is coated with an abrasion-resistant photocatalytic coating comprised of a semiconductor photocatalyst. Upon irradiation by a light having a wavelength of an energy higher than the bandgap energy of the photocatalyst, water is chemisorbed onto the surface in the form of hydroxyl groups (OH−) whereby the surface of the photocatalytic coating is rendered highly hydrophilic. In certain embodiments, the surface of a mirror, lens, or windowpane is coated with the photocatalytic coating to exhibit a high degree of antifogging function. In another embodiment, an article or product coated with the photocatalytic coating is disposed outdoors and the highly hydrophilic surface thereof is self-cleaned as it is subjected to rainfall. In a still another embodiment, an article is coated with the photocatalytic coating and, when the article is soaked in, rinsed by or wetted with water, fatty dirt and contaminants are readily released without resort to a detergent.Type: ApplicationFiled: August 14, 2001Publication date: February 7, 2002Inventors: Makoto Hayakawa, Eiichi Kojima, Keiichiro Norimoto, Mitsuyoshi Machida, Atsushi Kitamura, Toshiya Watanabe, Makoto Chikuni, Akira Fujishima, Kazuhito Hashimoto
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Publication number: 20020009407Abstract: Reticulated ceramic monolithic catalysts and non-poisoning catalyst supports comprising one or more metal oxides of chromium, cobalt, nickel, an alkaline earth, a rare earth, or another sinterable metal oxide that are active in any of various chemical oxidation reactions are disclosed. Methods of making the new reticulated ceramic structures comprising impregnating an organic foam or other pore-templating material are also disclosed. Processes for the catalytic conversion of light hydrocarbons to products comprising carbon monoxide and hydrogen employing reticulated ceramic catalysts are described.Type: ApplicationFiled: February 16, 2001Publication date: January 24, 2002Inventors: Kostantinos Kourtakis, Anne M. Gaffney, Lin Wang
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Patent number: 6337129Abstract: Disclosed is a member having an antifouling surface on which the so-called “stains,” such as deposits and contaminants, are less likely to be deposited. The surface of the member has both a hydrophobic portion, and a hydrophilic portion induced by a photocatalyst, the hydrophobic portion and the hydrophilic portion being present in a microscopically dispersed and exposed state on the surface. More specifically, according to a first aspect of the present invention, there is provided a member comprising: a substrate; and a surface layer provided on the substrate, the surface layer comprising a photocatalytic oxide, a silicone resin or silica, and a water-repellent fluororesin, the silicone or silica and the water-repellent fluororesin being present in a microscopically dispersed and exposed state on the outermost surface of the surface layer.Type: GrantFiled: November 30, 1998Date of Patent: January 8, 2002Assignee: Toto Ltd.Inventors: Toshiya Watanabe, Makoto Hayakawa, Mitsuyoshi Machida
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Patent number: 6313063Abstract: The present invention relates to a new catalyst support material comprising a mixed oxide consisting essentially of a divalent metal and a trivalent metal in a substantially homogeneous phase, the mixed oxide being a calcination product of a hydrotalcite-like phase calcinated at a temperature of about 700-1200° C., wherein the divalent metal/trivalent metal molar ratio is greater than or equal to 2. The invention also relates to a process of preparing the support. The invention further provides a catalyst for dehydrogenation which includes a transition metal selected from the first row of transition metals of the periodic table and/or a Group VIII metal impregnated on the new catalyst support material. The invention also provides a process for dehydrogenation of light alkanes using the catalyst.Type: GrantFiled: June 12, 1998Date of Patent: November 6, 2001Assignee: Den norske stats oljeselskap a.s.Inventors: Erling Rytter, Duncan Akporiaye, Unni Olsbye
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Publication number: 20010036897Abstract: In a formulation comprising titanium dioxide as a photocatalyst and an amphoteric metal oxide (alumina or the like) or a basic metal oxide (barium oxide, strontium oxide or the like) as a material having a base point, when a nitrogen oxide (nitrogen monoxide) comes into contact with or approaches titanium dioxide, upon exposed to light, the carbon monoxide is oxidized to nitrogen dioxide (gas) by hydroxy radicals as an active oxygen species produced by titanium dioxide. As is apparent from the molecular structure, nitrogen dioxide is an acidic gas, alumina is an amphoteric metal oxide, and barium oxide and strontium oxide are a basic metal oxide. The oxygen atom thereof serves as a base point to an acid gas. Therefore, nitrogen dioxide is attracted and chemically bonded to the oxygen atom, held on the metal oxide, and kept close to titanium dioxide as the photocatalyst.Type: ApplicationFiled: January 29, 2001Publication date: November 1, 2001Inventors: Kazuya Tsujimichi, Hiroto Hasuo, Hideki Kobayashi
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Publication number: 20010016184Abstract: A system for treating the exhaust of an industrial process or combustion source to capture gaseous sulfur compounds which includes contacting the exhaust containing gaseous sulfur compounds with a system of: (1) a structured support coated with for example a monolith (2) a ceramic oxide containing for example TiO2 (3) a precious metal component for example Pt and optionally (4) a modifier such as Cu. The system captures the gaseous sulfur compounds. Gaseous sulfur compounds are then driven off in higher concentrations in a separate isolated lower flow stream in higher concentrations which are easier to process to less noxious or useful sulfur materials, and the catalyst/sorber regenerated. The system also removes carbon dioxide by the oxidation of the carbon monoxide to carbon dioxide.Type: ApplicationFiled: April 4, 2001Publication date: August 23, 2001Applicant: GOAL LINE ENVIRONMENTAL TECHNOLOGIES LLCInventors: Larry E. Campbell, Gregory J. Wagner
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Patent number: 6274533Abstract: Novel sorbent systems for the desulfurization of cracked-gasoline are provided which are comprised of a bimetallic promotor on a particulate support such as that formed of zinc oxide and an inorganic or organic carrier. Such bimetallic promoters are formed of at least two metals of the group consisting of nickel, cobalt, iron, manganese, copper, zinc, molybdenum, tungsten, silver, tin, antimony and vanadium with the valence of same being reduced, preferably to zero. Processes for the production of such sorbents are provided wherein the sorbent is prepared from impregnated particulate supports or admixed to the support composite prior to particulation, drying, and calcination. Further disclosed is the use of such novel sorbents in the desulfurization of cracked-gasoline whereby there is achieved not only removal of sulfur but also an increase in the olefin retention in the desulfurized product. Such sorbents can also be utilized for the treatment of other sulfur-containing streams such as diesel fuels.Type: GrantFiled: December 14, 1999Date of Patent: August 14, 2001Assignee: Phillips Petroleum CompanyInventor: Gyanesh P. Khare
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Patent number: 6265342Abstract: A catalyst for purifying exhaust gases from diesel engines with an improved purification efficiency for both nitrogen oxide and particulates in exhaust emissions is provided. The catalyst includes: (i) a first catalytic layer containing a carrier portion including iron (Fe)-doped modified zirconium dioxide, and a catalyst portion including a material selected from the group consisting of copper (Cu), copper oxide, and mixtures thereof, and (ii) a second catalytic layer containing a carrier portion including Cu-doped modified zirconium dioxide, a main catalyst portion including platinum (Pt) and tin (Sn), and a co-catalyst portion including copper oxide. The catalyst portion of the first catalytic layer may contain palladium (Pd) instead of Cu.Type: GrantFiled: March 6, 2000Date of Patent: July 24, 2001Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Chang-bin Lim, Chan-ho Pak, Ju-hee Cho
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Publication number: 20010008619Abstract: The invention relates to a catalyst on support for the selective oxidation of sulfur-containing compounds to elemental sulfur, comprising at least one catalytically active material that is present on a support material, wherein the catalytically active material consists at least partly of a mixed oxide with an oxidic lattice, in which at least two metals in the form of ions are included.Type: ApplicationFiled: January 17, 2001Publication date: July 19, 2001Inventors: John Wilhelm Geus, Robert Johan Andreas Maria Terorde
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Patent number: 6239063Abstract: A catalyst and the use thereof in a reforming process is disclosed. The catalyst comprises a refractory inorganic oxide, platinum-group metal, Group IVA(IUPAC 14) metal, and lanthanide-series metal in a specified ratio. Utilization of this catalyst in the reforming of hydrocarbons, especially in reforming, results in significantly improved selectivity to the desired gasoline or aromatics product.Type: GrantFiled: April 14, 2000Date of Patent: May 29, 2001Assignee: UOP LLCInventor: Paula L. Bogdan
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Patent number: 6221805Abstract: A catalyst support, a catalyst using the catalyst support and a process for producing the same are disclosed. For instance, the catalyst support includes a composite oxide powder produced by spraying and burning a W/O type emulsion, the W/O type emulsion including an aqueous solution dispersed in an organic solvent, the aqueous solution containing aluminum as a major component and at least one co-metallic element in addition to the aluminum. Thus, the catalyst support can be produced less expensively without using any expensive alkoxide. Further, due to the spraying and burning, the composite oxide powder is composed of porous hollow particles which have a very thin shell thickness of dozens of nanometers, and makes the catalyst support which is amorphous and exhibits a large specific surface area. Hence, the catalyst support can maintain the large specific surface area even after a high-temperature durability test.Type: GrantFiled: February 24, 1999Date of Patent: April 24, 2001Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koichi Yamashita, Shinji Tsuji, Naoto Miyoshi, Oji Kuno, Masahiko Sugiyama, Kazumasa Takatori, Takao Tani, Nobuo Kamiya
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Patent number: 6200926Abstract: Solid catalysts suited for the fluidized/moving bed catalytic ammoxidation of alkanes comprise an active catalytic phase having the empirical formula (I): VSbaSnbTicFedEeOx (I) in which E is an element which provides an oxide of rutile structure or an element which, in combination with V, Sb, Sn, Ti, Fe and/or with another element E, provides a phase of rutile or trirutile structure, or a solid solution of rutile structure, a is a whole or fractional number equal to or greater than 0.Type: GrantFiled: December 19, 1996Date of Patent: March 13, 2001Assignee: R. P. Fiber & Resin IntermediatesInventors: Gilbert Blanchard, Paolo Burattin, Fabrizio Cavani, Stéfano Masetti, Ferruccio Trifiro
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Patent number: 6187711Abstract: Tin derivatives for use as oxygen-activated latent polycondensation catalysts. Said tin derivatives having a formula R1-Yn-R4, wherein R1 and R4 together form a divalent group or a single bond which insures the formation of a ring with n being 5, 6 or 7, the radicals Y, which may be similar or different, represent a tin-membered chain unit of a structure R′-Sn-R″, wherein R′ and R″, which may be similar or different are a hydrogen or a hydrocarbon radical.Type: GrantFiled: October 7, 1996Date of Patent: February 13, 2001Assignee: Rhodia ChimieInventors: Jean-Marie Bernard, Jean-Marc Frances, Bernard Jousseaume, Nicholas Noiret, Michel Pereyre
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Patent number: 6180830Abstract: The present invention relates to a new process for the preparation of a bimetallic ruthenium/tin catalyst. The process for the preparation of a bimetallic ruthenium/tin catalyst according to the invention is characterised by the fact that it consists in carrying out the reduction of a ruthenium complex having an electrovalency of −4 and a coordination number of 6, the ligands being either a halogen atom or an anion or a tin halide. The catalyst is further employed for the preparation of aldehydes by reduction, in the vapor phase, of carboxylic acids, esters and anhydrides.Type: GrantFiled: May 5, 1998Date of Patent: January 30, 2001Assignee: Rhodia ChimieInventor: Roland Jacquot
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Patent number: 6177382Abstract: In a process for preparing spinel extrudates by extruding molding compositions comprising spinel powder with or without extrusion assistants, stabilizers, shrinkage reducers, pore-formers or mixtures thereof subsequent drying and calcination of the extrudates, the molding composition further comprises aluminum oxides or aluminum oxide hydrates and metal nitrates.Type: GrantFiled: March 25, 1999Date of Patent: January 23, 2001Assignee: BASF AktiengesellschaftInventors: Michael Hesse, Otto Kumberger
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Patent number: 6177381Abstract: This invention relates to a layered catalyst composition, a process for preparing the composition and processes for using the composition. The catalyst composition comprises an inner core such as alpha-alumina, and an outer layer bonded to the inner core composed of an outer refractory inorganic oxide such as gamma-alumina. The outer layer has uniformly dispersed thereon a platinum group metal such as platinum and a promoter metal such as tin. The composition also contains a modifier metal such as lithium. The catalyst composition shows improved durability and selectivity for dehydrogenating hydrocarbons.Type: GrantFiled: November 3, 1998Date of Patent: January 23, 2001Assignee: UOP LLCInventors: Robert H Jensen, Jeffrey C. Bricker, Qianjun Chen, Masaru Tatsushima, Kenji Kikuchi, Masao Takayama, Koji Hara, Isao Tsunokuma, Hiroyuki Serizawa
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Patent number: 6156920Abstract: A process of manufacturing acrylonitrile or methacrylonitrile by the catalytic reaction in the vapor phase of a paraffin selected from propane and isobutane with molecular oxygen and ammonia by catalytic contact of the reactants in a reaction zone with a catalyst, the feed composition having a mole ratio of the paraffin to ammonia in the range of from about 2.5 to 16 and a mole ratio of paraffin to oxygen in the range of from about 1.0 to 10, wherein said catalyst has the elements in the proportions indicated by the empirical formula:VSb.sub.m A.sub.a Mo.sub.b D.sub.d O.sub.xwhereA is one or more of Ti, Sn, Fe, Cr and Ga;D is one or more of Li, Mg, Ca, Sr, Ba, Co, Ni, Zn, Ge, Nb, Zr, W, Cu, Te, Ta, Se, Bi, Ce, In, As, B and Mn;m equals 0.8 to 4;a equals 0.01 to 2;0<b<0.005;d is 0 to 2;x is determined by the oxidation state of the cations present, and the catalyst has been heat treated at a temperature of at least 780.degree. C.Type: GrantFiled: March 26, 1998Date of Patent: December 5, 2000Assignee: The Standard Oil CompanyInventors: James Frank Brazdil, Jr., Mark Anthony Toft
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Patent number: 6146606Abstract: A process for decomposing nitrogen fluoride, comprising contacting gaseous nitrogen fluoride with a solid reactive agent for decomposition at 200.degree. C. or more to fix the fluorine component in the nitrogen fluoride to the reactive agent and at the same time control generation of nitrogen oxides, fluorocarbon and carbon monoxide as by-products, the reactive agent containing elemental carbon; aluminum compound, iron compound, manganese compound and/or alkaline earth metal; alkali metal compound; and nickel compound, tin compound and/or copper compound.Type: GrantFiled: December 28, 1999Date of Patent: November 14, 2000Assignee: Showa Denko Kabushiki KaishaInventors: Hitoshi Atobe, Toraichi Kaneko
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Patent number: 6133192Abstract: A catalyst composition suitable for the conversion of n-butane to butenes. The same catalyst composition that with chlorination is further suitable, when used in the conversion of n-butane, for the production of an increased amount of BTX (benzene-toluene-xylene) and greater selectivity to the production of isobutylenes than attained with the unchlorinated catalyst. A process for the preparation of catalyst compositions suitable for the conversion of n-butane. Use of the catalyst compositions in processes for the conversion of n-butane.Type: GrantFiled: December 29, 1998Date of Patent: October 17, 2000Assignee: Phillips Petroleum CompanyInventors: An-hsiang Wu, Charles A. Drake
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Patent number: 6130183Abstract: Disclosed is a novel catalyst and process using the novel catalyst for the oxidative dehydrogenation and cracking of C.sub.2 to C.sub.5 paraffins (homogeneous hydrocarbons or mixtures such as liquified gas to C.sub.2 to C.sub.5 olefins in the presence of an oxygen-containing gas and water vapor. The novel catalyst has the following formulaX.sub.a Y.sub.b Z.sub.c A.sub.d O.sub.x,where, referring to the Periodic System,X is an element of Group II and/or IV b (Mg, Ca, Za, Ti, Zr . . . )Y is a Lanthanide and/or an element of Group IVa or Va (Ce, La, Nd, Dy, Sn, Pr, Sb, Pb . . . );Z is an element of Group I (Li, Na, K . . . );A is an element of Group VII (Cl, Br, I . . . );O is oxygen; anda is 0.4 to 0.9,b is 0.005 to 0.3,c is 0.05 to 1.5,d is 0.05 to 0.8, andx is determined by the valance requirements of metals and halogens.Type: GrantFiled: July 9, 1997Date of Patent: October 10, 2000Assignees: Mannesmann Aktiengesellschaft, K.T.I. Group B.V.Inventors: Mordechay Herskowitz, Miron Landau, Mark Kaliya
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Patent number: 6121190Abstract: Catalytic composition comprising a larger quantity of Cobalt, in metal form or in the form of a derivative, and smaller quantities of Ruthenium and Tantalum, in metal form or in the form of a derivative, the above elements being dispersed on a carrier selected from the oxides of at least one of the elements selected from Si, Ti, Al, Zn, Sn, Mg.Type: GrantFiled: January 29, 1998Date of Patent: September 19, 2000Assignees: Agip Petroli S.p.A., ENI S.p.A., Institut Francais du PetroleInventors: Roberto Zennaro, Andrea Gusso
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Reduction of NO.sub.x in the exhaust gases from internal combustion engines containing excess oxygen
Patent number: 6087295Abstract: Removal of carbon monoxide, hydrocarbons, and nitrogen oxides from the exhaust gas from lean-burn, diesel and other engines which produce exhaust gases containing excess oxygen is provided by a multi-component catalyst having at least two catalytic components, each capable of reducing nitrogen oxides within a range of exhaust gas temperatures that is different from the range of exhaust gas temperatures within which each other component is capable of reducing nitrogen oxides. Oxidation of the remaining reducing gases is also accomplished. One example of a two catalytic component catalyst of this invention has a first component of Au supported on alumina, which reduces nitrogen oxides at exhaust gas temperatures between about 600.degree. C. and 900.degree. C., and a second component of Pt supported on Y-zeolite, which reduces nitrogen oxides at exhaust gas temperatures below 600.degree. C.; an example of a three catalytic component catalyst of this invention has a first component of CoO supported on .gamma.Type: GrantFiled: June 30, 1998Date of Patent: July 11, 2000Assignee: ASEC ManufacturingInventors: Karl C. C. Kharas, Heinz J. Robota -
Patent number: 6083467Abstract: An exhaust gas purifying catalyst in which catalytic activation particles 3 composed of a catalytic element or its compound are carried on a carrier 1. The catalytic activation particles 3, as carried on the carrier 1 and exposed to the outside of the carrier 1, are coated with the carrier 1 by 20 to 90% of their whole surface area. Also disclosed is a process for producing the exhaust gas purifying catalyst.Type: GrantFiled: February 2, 1998Date of Patent: July 4, 2000Assignees: Toyota Jidosha Kabushiki Kaisha, Katsuhiko WakabayashiInventors: Shinichi Takeshima, Toshiaki Tanaka, Tetsuya Yamashita, Satoshi Iguchi, Katsuhiko Wakabayashi, Masahiro Kishida
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Patent number: 6080893Abstract: A mixed oxide solid composition of formula (I):Mo.sub.12 W.sub.a Bi.sub.b Fe.sub.c Co.sub.d Ni.sub.e Si.sub.f K.sub.g Sn.sub.h O.sub.x (I)where O.ltoreq.a.ltoreq.5, 0.5.ltoreq.b.ltoreq.5, 0.1.ltoreq.c.ltoreq.10, 0.5.ltoreq.d.ltoreq.10, 0.ltoreq.e.ltoreq.10, 0.ltoreq.f.ltoreq.15, 0.ltoreq.g.ltoreq.1, 0.ltoreq.h.ltoreq.2 and x is the quantity of oxygen bonded to the other elements and depends on their oxidation states, is used in the manufacture of acrolein by oxidizing propylene, the solid composition reacting with propylene according to the redox reaction (1):solid.sub.oxidized +propylene.fwdarw.solid.sub.reduced +acrolein(I)To manufacture acrolein, gaseous propylene is passed over a solid composition of formula (I), to conduct the redox reaction (1) by operating at a temperature of 200 to 600.degree. C., at a pressure of 1.01.times.10.sup.4 to 1.01 to 10.sup.6 Pa (0.1 to 10 atmospheres) and with a residence time of 0.01 second to 90 seconds, in the absence of molecular oxygen.Type: GrantFiled: February 27, 1998Date of Patent: June 27, 2000Assignee: Elf Atochem, S.A.Inventors: Gerard Hecquet, Jean-Pierre Schirmann, Michel Simon, Gilles Descat, Eric Etienne
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Patent number: 6080379Abstract: The invention relates to a catalyst for the treatment of gases containing sulphur compounds, using the Claus reaction or using hydrolysis, which is made up of alumina-based porous particles and characterized in that the cumulative volume created by all the pores whose diameter is greater than 0.1 .mu.m, V.sub.0.1, is greater than 12 ml/100 g of catalyst and in that the cumulative volume created by all the pores whose diameter is greater than 1 .mu.m, V.sub.1, is such that the ratio V.sub.1 /V.sub.0.1 is higher than or equal to 0.65. This catalyst can be employed for the treatment of gases containing sulphur compounds by using the Claus reaction, or of gases containing organic sulphur compounds by using a hydrolysis reaction.Type: GrantFiled: July 10, 1997Date of Patent: June 27, 2000Assignee: Institut Francais du PetroleInventors: Christophe Nedez, Olivier Legendre
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Patent number: 6074985Abstract: A supported Lewis acid catalyst such as antimony V on a fluorine-treated moisture-free activated carbon support is provided, as are fluorination processes using such a catalyst.Type: GrantFiled: August 3, 1999Date of Patent: June 13, 2000Assignee: Elf Atochem North America, Inc.Inventors: Maher Y. Elsheikh, Bin Chen
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Patent number: 6072070Abstract: Mixed oxide vanadium/antimony/titanium ammoxidation catalysts, particularly suited for the ammoxidation of alkanes and exhibiting X-ray diffraction spectra which are characteristic of a crystallographic phase of rutile TiO.sub.2, are prepared by (a) dissolving respective soluble compounds of vanadium, of antimony and of titanium in at least one saturated alcohol, (b) contacting the alcoholic solution thus obtained with water and precipitating the mixed oxide therefrom, and (c) separating and calcining the mixed oxide thus precipitated.Type: GrantFiled: May 8, 1997Date of Patent: June 6, 2000Assignee: R.P. Fiber & Resin IntermediatesInventors: Stefania Albonetti, Gilbert Blanchard, Paolo Burattin, Fabrizio Cavani, Ferruccio Trifiro
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Patent number: 6037295Abstract: The subject invention relates to a catalyst comprises 1-75% of iron oxide, 1-10% of titanium metal oxide and the balance being attapulgate useful for the preparation of alkylated aromatic amines.Type: GrantFiled: October 8, 1998Date of Patent: March 14, 2000Assignee: Council of Scientific & Industrial ResearchInventors: Bankupalli Satyavathi, Akash Narhar Rao Patwari, Uday Triambakraj Bhalerao
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Patent number: 6020283Abstract: The present invention relates to a novel process for the production of delayed action tin catalysts. This process comprises reacting a dialkyltin dihalide with an alkali metal sulfide, to yield the corresponding 2,2,4,4-tetrakis(alkyl)-1,3,2,4-dithia-stannetane catalyst.Type: GrantFiled: December 2, 1998Date of Patent: February 1, 2000Assignee: Bayer CorporationInventors: James W. Rosthauser, Hartmut Nefzger, Robert Lee Cline
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Patent number: 6017844Abstract: A catalyst composition and a process for using of the catalyst composition in a hydrocarbon conversion process are disclosed. The composition comprises an inorganic support, a Group VA metal or metal oxide, and optionally a Group IVA metal or metal oxide and a Group VIII metal or metal oxide. The process comprises contacting a fluid which comprises at least one saturated hydrocarbon with the catalyst composition under a condition sufficient to effect the conversion of the hydrocarbon to an olefin. Also disclosed is a process for producing the catalyst composition.Type: GrantFiled: December 11, 1998Date of Patent: January 25, 2000Assignee: Phillips Petroleum CompanyInventors: An-hsiang Wu, Charles A. Drake
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Patent number: 5994259Abstract: An ammoxidation catalyst characterized by the following empirical formula comprising:VSb.sub.a Sn.sub.b Ti.sub.c Fe.sub.d O.sub.xwhere1.ltoreq.a.ltoreq.1.80.ltoreq.b.ltoreq.0.350.ltoreq.c.ltoreq.0.150<d.ltoreq.0.80<b+c.ltoreq.0.51.ltoreq.a-d<1.8and when a-d>1.2then 0<d<0.5 and 0.3.ltoreq.b+c.ltoreq.0.5and when a-d.ltoreq.1.2then 0.2<d.ltoreq.0.8 and 0<b+c<0.3and x is determined by the oxidation states of the cations present in the catalyst.Preferably, the catalyst has been calcined at a temperature of at least 780.degree. C.Type: GrantFiled: July 29, 1998Date of Patent: November 30, 1999Assignee: The Standard Oil CompanyInventors: James Frank Brazdil, Jr., Joseph Peter Bartek
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Patent number: 5985789Abstract: Improved hydrogenation catalysts consisting essentially of reduced or at least partially reduced ruthenium and tin on a refractory oxide support which is insoluble in aqueous acid. Such catalysts are very durable and exhibit high conversion rates in aqueous acidic solution hydrogenation of hydrogenatable precursors (e.g. maleic acid, succinic acid, gamma-butyrolactone etc.) and high selectivity for their conversion to 1,4-butanediol and gamma-butyrolactone and their mixtures.Type: GrantFiled: March 27, 1997Date of Patent: November 16, 1999Assignee: E. I. du Pont de Nemours and CompanyInventors: Patricia Ann Tooley, Jesse Raymond Black
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Patent number: 5977013Abstract: The present invention is a catalyst in the form of a plurality of porous particles wherein each particle is a support having nickel metal catalytic phase or reduced nickel deposited thereon in a first dispersed phase and an additional metal deposited onto the support in a second dispersed phase. The additional metal is effective in retarding or reducing agglomeration or sintering of the nickel metal catalytic phase without substantially affecting the catalytic activity, thereby increasing the life time of the catalyst.Type: GrantFiled: December 19, 1996Date of Patent: November 2, 1999Assignee: Battelle Memorial InstituteInventors: Douglas C. Elliott, Todd R. Hart
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Patent number: RE37663Abstract: The dehydrogenation of an alkane to an alkene, especially isobutane to isobutene, is carried out in admixture with oxygen and in the absence of added steam over a dehydrogenation and oxidation catalyst comprising a platinum group metal deposited upon a support. A catalyst comprising platinum deposited on a support which is a mixture of tin oxide and zirconium oxide possesses good activity for the dehydrogenation of an alkane, especially carried out in this way.Type: GrantFiled: December 7, 1998Date of Patent: April 16, 2002Assignee: Johnson Matthey Public Limited CompanyInventors: Stanislaw E. Golunski, John W. Hayes