And Group Iii Metal Containing (i.e., Sc, Y, Al, Ga, In Or T1) Patents (Class 502/354)
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Patent number: 5470815Abstract: The present invention relates to a novel multicomponent oxide catalyst, more specifically, a highly active and selective catalyst composition which plays a vital role to produce unsaturated nitrile compounds by reacting paraffinoid hydrocarbons with ammonia and oxygen. The formula of catalyst composition of the present invention is represented as A.sub.a B.sub.b C.sub.c D.sub.d In.sub.e Ga.sub.f Bi.sub.g Mo.sub.i O.sub.x. wherein:A is alkali metal, alkali earth metal, silver or copper;B is nickel, cobalt, iron, chromium, ruthenium, palladium or manganese;C is zinc, cadmium, cerium, tin, phosphorus, antimony, lead, tellurium, germanium or aluminum;D is titanium, zirconium, vanadium, niobium, tantalum, lanthanum, neodymium, gadolinium or tungsten; and, a, b, c, d, e, f, g and i is the mole of each component, wherein, a is 0 to 10; b is 0 to 5; c is 0 to 15; d is 0 to 14; e is 0 to 2; f is 0 to 7; g is 1 to 25; i is 12 to 40; and, 12.ltoreq.a+b+c+d+e+f+g.ltoreq.40.Type: GrantFiled: December 29, 1993Date of Patent: November 28, 1995Assignee: Korea Advanced Institute of Science and TechnologyInventors: Jong-Seob Kim, Seong-Ihl Woo
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Patent number: 5422328Abstract: A process for preparing a catalyst useful for producing a nitrile by a gas phase catalytic oxidation reaction of an alkane with ammonia, which comprises drying a solution or slurry containing molybdenum, vanadium and tellurium by a spray drying method or a freeze-drying method and heat-treating the resulting dried product.Type: GrantFiled: December 27, 1993Date of Patent: June 6, 1995Assignee: Mitsubishi Kasei CorporationInventors: Takashi Ushikubo, Itaru Sawaki, Kazunori Oshima, Kei Inumaru, Satoshi Kobayakawa, Ken-ichi Kiyono
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Patent number: 5413974Abstract: A substantially amorphous, aluminum-containing oxide having the composition Al.sub.1-x-y1-y2 Bi.sub.x M.sub.1y1 O.sub.z (wherein x is defined by 0.0001.ltoreq.x.ltoreq.0.10, M.sub.1 is at least one selected from Si, P, B, Sb, Se, Te, Sn, Zn, In, Cr, Nb, Sc, Y, Sr, Ba, Ca, Na, Li, Mg, Mn, W, Ti, Zr, Hf, Be and rare earth metals, M.sub.2 is at least one selected from Fe, Ni, Co, Rh, Ru, Re, Cu and Pb, y1 is defined by 0.ltoreq.y1.ltoreq.0.1, y2 is defined by 0.ltoreq.y2.ltoreq.0.01, z is defined by 1.2.ltoreq.z.ltoreq.1.5, and x, y1, y2 and z are each an atomic ratio); an aluminum-containing metal composition containing the above oxide and Al and/or Bi in a metallic state; a process for producing the above oxide or the above metal composition; and a molded article formed from the above oxide or the above metal composition. The above oxide or the above metal composition is useful as an electronic part, a catalyst, and the like.Type: GrantFiled: November 22, 1991Date of Patent: May 9, 1995Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Akinori Yokoyama, Hitoshi Nakajima
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Patent number: 5380692Abstract: A catalyst for catalytic reduction of nitrogen oxide using at least one reducing agent selected from the group consisting of a hydrocarbon and an oxygen-containing organic compound is described, which includes an oxide represented by formula (V):A.sup.5.sub.x B.sup.3.sub.3-x C.sup.4.sub.3 O.sub.7 (V)wherein A.sup.5 represents at least one element selected from the group consisting of La, Y, Ce, Pr, Nd, Sm, Eu, and Gd; B.sup.3 represents at least one element selected from the group consisting of Ba, Sr, Ca, Mg, Pb, Zn, and Ag; C.sup.4 represents at least one element selected from the group consisting of Mn, Co, Fe, Ni, Cr, Cu, V, Mo, W, Ti, Zr, Nb, Pd, Rh, Ru, and Pt; and x is a number of from 0 to 1, supported on a solid acid carrier.Type: GrantFiled: September 11, 1992Date of Patent: January 10, 1995Assignees: Sakai Chemical Industry Co., Ltd., Agency of Industrial Science and Technology, Petroleum Energy Center, Cosmo Oil Co., Ltd.Inventors: Tadao Nakatsuji, Hiromitsu Shimizu, Ritsu Yasukawa, Fujio Suganuma, Akihiro Kitazume, Hiroshi Tsuchida, Takehiko Ito, Hideaki Hamada, Katsumi Miyamoto, Masaaki Kawatsuki, Yoshiaki Kintaichi, Motoi Sasaki, Mitsunori Tabata
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Patent number: 5369076Abstract: Particular mixed vanadium/other metal catalysts, well suited for the desulfurization of gaseous effluents containing contaminating amounts of objectionable sulfur compounds, typically via the Claus reaction and notably in the presence of oxygen, comprise a support substrate, e.g., titanium dioxide, having an active catalytic phase deposited thereon, such active catalytic phase being constituted of an electroneutral solid solution having the average composition:A.sub.4.+-.y V.sub.2.+-.x O.sub.9in which A is a metal other than vanadium, e.g., magnesium, calcium or zinc, 0.ltoreq.x.ltoreq.0.2 and 0.ltoreq.y.ltoreq.0.5.Type: GrantFiled: June 17, 1992Date of Patent: November 29, 1994Assignee: Institut de Catalyse du Department Siberien de l'Academie des Sciences de Russie and Vniigaz (Institut de recherches de gas naturels)Inventors: Roman A. Bouyanov, Albert M. Tsyboulesky, Boris P. Zolotovsky, Dimitri P. Klevtsov, Vladimir I. Mourine
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Patent number: 5166122Abstract: A process for producing a denitration catalyst suitable for catalytically reducing nitrogen oxides in exhaust gases having a low dust content with ammonia is provided, which process comprises adding water to catalyst raw materials affording titanium oxide, molybdenum oxide and vanadium oxide at the time of calcination respective proportions thereof being in the range of Ti/Mo/V=97-65/3-20/0-15 atomic %, to make slurry, followed by coating the slurry onto a metal substrate and drying. Molybdenum oxide particles are coated on a titanium oxide particle at calcination, which makes the grindability of the catalyst particle easy and improve its adherence to the metal substrate.Type: GrantFiled: November 21, 1990Date of Patent: November 24, 1992Assignee: Babcock-Hitachi Kabushiki KaishaInventors: Nobue Teshima, Yasuyoshi Kato, Takashi Michimoto
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Patent number: 5164351Abstract: Carrier-supported catalyst on the basis of transition metals for the removal of nitrogen oxides, carbon monoxide and/or organic compounds from exhaust gases, which can be produced by one of: combination a), combination b), combination c) where (a) comprises charging of a carrier with at least one metal complex compound with a plane or nearly plane conformation, and activation of the charged carrier with (i) a gas mixture which contains nitrogen oxide and/or oxygen, at temperatures between room temperature and 500.degree. C., or with (ii) a solution which contains nitric acid and/or an oxidation agent, or (b) comprises charging of a carrier with at least one transition metal oxide or transition metal carbonate, and treatment of the charged carrier with an oxidizing gas mixture, which contains free ligands capable of complex formation, at temperatures between room temperature and 500.degree. C.Type: GrantFiled: May 21, 1990Date of Patent: November 17, 1992Assignee: Friedrich SteinbachInventors: Friedrich Steinbach, Reinhild Ellmers-Kutzinski, Andreas Brunner, Holger Muller
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Patent number: 5106802Abstract: A catalyst for the purification of the exhaust gas from a diesel engine, which catalyst comprises a honeycomb carrier possessing through holes disposed parallelly to the direction of flow of the exhaust gas and a catalyst component possessing a specific surface area of not more than 200 m.sup.2 /g and deposited on said carrier in a ratio of from 0.01 to 100 g per liter of said carrier and which catalyst possesses a specific surface area of from 0.1 to 5,000 m.sup.2 /liter of said catalyst.Type: GrantFiled: February 25, 1991Date of Patent: April 21, 1992Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Makoto Horiuchi, Koichi Saito
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Patent number: 5094989Abstract: Disclosed is a process for making an activated antimony and vanadium-containing catalyst in oxide form having an atomic ratio of Sb:V in the range from 0.8-4, which comprises calcining such an oxidic vanadium and antimony-containing composition at a temperature of over 750.degree. C., and thereafter contacting said calcined catalyst with a hydroxy compound in liquid form selected from (1) cyclohexanol, (2) cyclopentanol, (3) a monohydroxy, acyclic hydrocarbon having 1-8 C atoms, and (4) a dihydroxy, acyclic hydrocarbon having 2-4 carbon atoms, and separating as a liquid said compound from said catalyst insofar as it is present beyond the amount wetting said catalyst, and thereafter drying said catalyst.Type: GrantFiled: December 21, 1990Date of Patent: March 10, 1992Assignee: The Standard Oil CompanyInventors: Charles S. Lynch, Linda C. Glaeser, James F. Brazdil, Jr., Mark A. Toft
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Patent number: 5070065Abstract: The present invention pertains to novel phases involving V.sub.2 O.sub.3, Al.sub.2 O.sub.3 and CaO, and the method for their preparation. The solid compositions involving V.sub.2 O.sub.3, Al.sub.2 O.sub.3, and composition diagram of V.sub.2 O.sub.3 -Al.sub.2 O.sub.3 -CaO as shown in the drawing herein e.g., FIG. 1. The composition may be used as a catalyst for oxidation or reduction reactions.Type: GrantFiled: August 6, 1990Date of Patent: December 3, 1991Assignee: Texaco Inc.Inventors: Arnulf Muan, Mitri S. Najjar
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Patent number: 5061674Abstract: The present invention pertains to novel solid solutions involving MnO, V.sub.2 O.sub.3 and TiO.sub.2 and the method for their preparation. The solid compositions involving MnO, V.sub.2 O.sub.3 and TiO.sub.2 fall within the shaded area of a polygon in a ternary composition diagram of MnO, V.sub.2 O.sub.3 and TiO.sub.2 as shown in the drawing herein e.g., FIG. 1. The composition may be used as an oxidation catalyst or in the manufacture of high temperature refractories.Type: GrantFiled: June 1, 1990Date of Patent: October 29, 1991Assignee: Texaco Inc.Inventors: Arnulf Muan, Mitri S. Najjar
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Patent number: 5061673Abstract: The present invention pertains to novel solid solutions involving Cr.sub.2 O.sub.3, V.sub.2 O.sub.3 and TiO.sub.2 and the method for their preparation. The solid compositions involving Cr.sub.2 O.sub.3, V.sub.2 O.sub.3 and TiO.sub.2 fall within the shaded area of a polygon in a ternary composition diagram of Cr.sub.2 O.sub.3, V.sub.2 O.sub.3 and TiO.sub.2 as shown in the drawing herein e.g., FIG. 1. The composition may be used as an oxidation catalyst or in the manufacture of high temperature refractories.Type: GrantFiled: June 1, 1990Date of Patent: October 29, 1991Assignee: Texaco Inc.Inventors: Arnulf Muan, Mitri S. Najjar
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Patent number: 5047379Abstract: Metal oxide catalysts having one or more metal oxides covalently or non-covalently bound to or entrapped on a solid phase support wherein the metal oxide catalyst is prepared by evaporation and cocondensation in a suitable organic solvent are disclosed. Metal oxide catalysts are prepared by evaporation and cocondensation in a suitable organic solvent and dispersed on a solid support as a highly dispersed thin surface film. A process for the preparation of metal oxide catalysts prepared by evaporation and cocondensation is also disclosed. A process for the preparation of metal oxide catalysts prepared by evaporation and cocondensation of metal oxides in a suitable organic solvent and dispersed on a solid support as a high dispersed thin surface film is also disclosed.Type: GrantFiled: October 26, 1989Date of Patent: September 10, 1991Inventors: Elmer C. Alyea, Kevin F. Brown, Keith J. Fisher
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Patent number: 5041409Abstract: The present invention pertains to novel solid solutions involving FeO, V.sub.2 O.sub.3 and TiO.sub.2 and the method for their preparation. The solid compositions involving FeO, V.sub.2 O.sub.3 and TiO.sub.2 fall within the shaded area of a polygon in a ternary composition diagram of FeO, V.sub.2 O.sub.3 and TiO.sub.2 as shown in the drawing herein e.g., FIG. 1. The composition may be used as an oxidation catalyst or in the manufacture of high temperature refractories.Type: GrantFiled: April 12, 1990Date of Patent: August 20, 1991Assignee: Texaco Inc.Inventors: Arnulf Muan, Mitri S. Najjar
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Patent number: 5036037Abstract: Process for producing catalysts for use within hydrogenation, oxidation, dehydration or dehydrogenation processes comprising oxides, in pure or mixed form, or being applied as mixed crystal systems, made of nickel, cobalt and molybdenum, vanadium, tungsten, titanium and chromium, starting with their corresponding aqueous solutions of their respective chlorides, fluorides or nitrates, which afterwards are processed within a pyrohydrolysis plant to gain the oxide powders, of typical specific surfaces areas of 1 to 100 m.sup.2 /g, agglomerate sizes of 1 to 500 microns and mean particle sizes of 20 to 30 microns. The corresponding anions of these salt solutions are transformed during pyrohydrolysis into their respective acids, which can be regained by absorptive means and which thereafter can be returned to a chemical dissolving process to make the salts and solutions for the pyrohydrolysis, which means an economic advantage.Type: GrantFiled: May 4, 1990Date of Patent: July 30, 1991Assignee: Maschinenfabrik Andritz AktiengesellschaftInventors: Wolfgang Kladnig, Heinz Krivanec
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Patent number: 5036038Abstract: The present invention pertains to novel solid solutions involving NiO, V.sub.2 O.sub.3 and TiO.sub.2 and the method for their preparation. The compositions involving NiO, V.sub.2 O.sub.3 and TiO.sub.2 fall within the shaded area of a polygon in a ternary composition diagram of NiO, V.sub.2 O.sub.3 and TiO.sub.2 as shown in the drawing herein e.g., FIG. 1. The composition may be used as an oxidation catalyst or in the manufacture of high temperature refractories.Type: GrantFiled: April 12, 1990Date of Patent: July 30, 1991Assignee: Texaco Inc.Inventors: Arnulf Muan, Mitri S. Najjar
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Patent number: 4977130Abstract: A novel oxidation catalyst or refractory and the method for its preparation. The material comprises substitutional solid solutions involving V.sub.2 O.sub.3, Al.sub.2 O.sub.3 and TiO.sub.2 and having compositions that fall within a specific polygon in a ternary composition diagram of V.sub.2 O.sub.3, Al.sub.2 O.sub.3 and TiO.sub.2. A typical material has the formula Al.sub.0.65 V.sub.1.77 Ti.sub.0.69 O.sub.5.Type: GrantFiled: September 5, 1989Date of Patent: December 11, 1990Assignee: Texaco Inc.Inventors: Nitri S. Najjar, Arnulf Muan
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Patent number: 4908344Abstract: A catalyst support is made with a bidisperse micropore size distribution. One region has small micropores with an average pore diameter of less than 100 Angstrom units. The other region has large micropores with an average pore diameter which is between 100 and 600 Angstrom units. By adding catalytic metals for desulfurization and demetallation, a hydrotreating catalyst is made which is able to treat heavy feeds containing large metal bearing molecules. In a preferred embodiment the desulfurization metals are placed in the small micropores and the demetallation metals are placed in the larger micropores.Type: GrantFiled: July 8, 1987Date of Patent: March 13, 1990Assignee: W. R. Grace & Co.-Conn.Inventors: Carmo J. Pereira, Wu-Cheng Cheng
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Patent number: 4870052Abstract: Stable, bulk electrical superconductors are prepared by heating mixed metal oxides in the presence of oxygen in a closed vessel in a preheated oven for 1-5 hours at 850.degree.-900.degree. C. The final oxides are in the molar ratio Tol.sub.0.6-1.1 Ca.sub.2-3 Ba.sub.0.75-1.25 Cu.sub.2-3 O.sub.(5+.delta.)-(9+.delta.), where .delta. is less than one.Type: GrantFiled: March 8, 1988Date of Patent: September 26, 1989Assignee: International Business Machines CorporationInventors: Edward M. Engler, Victor Y. Lee, Adel I. Nazzal, Stuart S. P. Parkin
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Patent number: 4861746Abstract: A catalyst for hydrotreating a heavy hydrocarbon oil which comprises a porous refractory inorganic oxide carrier component and at least one hydrogenating active metal component selected from nickel, cobalt and the like, the metal component concentration in the cross-section of the catalyst being the highest between the center of the cross-section and the periphery thereof.Type: GrantFiled: January 27, 1988Date of Patent: August 29, 1989Assignees: Nippon Oil Co., Ltd., Petroleum Energy Center FoundationInventors: Yasuyuki Oishi, Akira Inoue
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Patent number: 4855275Abstract: A process for improving the performance of an ammoxidation catalyst comprising contacting said catalyst with a boron containing or heat decomposable boron compound to deposit boron on the catalyst.Type: GrantFiled: February 18, 1988Date of Patent: August 8, 1989Assignee: The Standard Oil CompanyInventors: Dev D. Suresh, Michael J. Seely, James F. Brazdil, Robert K. Grasselli
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Patent number: 4843059Abstract: A superconducting mixed valence copper oxide, having a formula of the type:(La.sub.2-x (Y.sub.x" Bi.sub.1-x").sub.x' Sr.sub.x-x').sub.1-e CuO.sub.4-y,where:0.ltoreq.x<0.30.ltoreq.x'.ltoreq.0.2 with x'<x0.ltoreq.x".ltoreq.10<y.ltoreq.0.10.ltoreq.e.ltoreq.0.005.Type: GrantFiled: March 10, 1988Date of Patent: June 27, 1989Assignee: Compagnie Generale D'ElectriciteInventors: Francis Deslandes, Claude Michel, Jackie Provost, Bernard Raveau, Andre Sulpice, Jean-Louis Tholence, Bernard Chevalier
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Patent number: 4837233Abstract: Ammoxidation of C.sub.3 to C.sub.5 acyclic alkanes with NH.sub.3 and O.sub.2 using (1) a mole ratio of alkane:NH.sub.3 in the range from 2 to 16 and a mole ratio of alkano:O.sub.2 in the range 1 to 10 and (2) a mixture of particulate catalyst composition, the first being especially effective to promote formation of an unsaturated nitrile and an olefin from the paraffin, and the second catalyst composition being especially effective to promote the conversion of the olefin to the unsaturated nitrile. Catalytic compositions useful in the process are disclosed.Type: GrantFiled: May 15, 1987Date of Patent: June 6, 1989Assignee: The Standard Oil CompanyInventors: Linda C. Glaeser, James F. Brazdil, Jr., Mark A. Toft
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Patent number: 4797381Abstract: Disclosed is a method of making an active and abrasion resistant catalyst composition comprising at least 5 weight percent alumina support and at most 95 percent of a complex oxide composition having the empirical formula:VSb.sub.m A.sub.a H.sub.b C.sub.c O.sub.x,whereA is one or more of W, Sn, Mo, B, P and Ge;H is one or more of Cu, Ag, Nb, Ta, Ti, Fe, Co, Ni, Cr, Pb, Mn, Zn, Se, Te, Ga, In and As;C is one or more of an alkali metal, alkaline earth metal, and rare earths; andwhere m is from 0.01 and up to 20; a is 0-10; b is 0-20; c is 0-20 (usually 0-1); the ratio (a+b+c):(1+m) is 0.01-6; wherein x is determined by the oxidation state of the other elements, which method comprises mixing a hydrosol or gel of boehmite with a slurry or solution containing the other batch materials containing the elements of said formula, and thereafter drying and calcining the resultant solid.Type: GrantFiled: July 30, 1987Date of Patent: January 10, 1989Assignee: The Standard Oil CompanyInventors: Joseph P. Bartek, Andrew T. Guttmann, James F. Brazdil
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Patent number: 4788173Abstract: Ammoxidation of C.sub.3 to C.sub.5 acyclic alkanes with NH.sub.3 and O.sub.2 using (1) a mole ratio of alkane:NH.sub.3 in the range from 2 to 16 and a mole ratio of alkane:O.sub.2 in the range 1 to 10 and (2) a mixture of particulate catalyst compositions, the first being especially effective to promote formation of an unsaturated nitrile and an olefin from the paraffin, and the second catalyst composition being especially effective to promote the conversion of the olefin to the unsaturated nitrile. Catalytic compositions useful in the process are disclosed.Type: GrantFiled: July 21, 1986Date of Patent: November 29, 1988Assignee: The Standard Oil CompanyInventors: Linda C. Glaeser, James F. Brazdil
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Patent number: 4687567Abstract: The formation of carbon on metals exposed to hydrocarbons in a thermal cracking process is reduced by contacting such metals with an antifoulant selected from the group consisting of a combination of elemental indium or an organic compound of indium and tin and a combination of elemental indium or an organic compound of indium and antimony.Type: GrantFiled: April 9, 1986Date of Patent: August 18, 1987Assignee: Phillips Petroleum CompanyInventors: Randall A. Porter, Larry E. Reed
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Patent number: 4659687Abstract: Novel alumina-supported nickel boride catalysts prepared by the borohydride promoted reduction of nickel arsenate are described. Method of catalyst preparation and process for hydrogenation of acetylenic and diolefinic compounds employing the invention catalysts are also described.Type: GrantFiled: December 17, 1984Date of Patent: April 21, 1987Assignee: Phillips Petroleum CompanyInventor: Ted H. Cymbaluk
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Patent number: 4623748Abstract: This invention relates to a process for converting propylene/butylene oligomers to dialkyl adipates where said adipates have higher flash points than conventionally prepared adipates.Type: GrantFiled: February 25, 1985Date of Patent: November 18, 1986Assignee: Shell Oil CompanyInventor: Thomas H. Johnson
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Patent number: 4588707Abstract: A catalyst process is disclosed for the reduction of the ignition temperature of Diesel soot filtered out of the exhaust gas of Diesel engines by passing the exhaust gas over a catalytically active substance, which is selected from lithium oxide, copper chloride, vanadium oxide/alkali metal oxide combinations, a vanadate of an alkali metal or of cerium, or a silver or alkali metal perrhenate, preferably of sodium or silver, or mixtures of these substances.Type: GrantFiled: March 7, 1985Date of Patent: May 13, 1986Assignee: Degussa AktiengesellschaftInventors: Rainer Domesle, Edgar Koberstein, Hans-Dieter Pletka, Herbert Volker
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Patent number: 4585752Abstract: A high temperature stable catalyst is made with fine particles of a base metal such as chromium, hafnium and niobium or their oxides dispersed throughout a matrix made of composite particles having at least one platinum group metal on a ceria promoted, high temperature chemically stabilized refractory oxide powder. The refractory oxide powder can be either alumina, alumina powder which has been calcined at a temperature near incipient alpha alumina formation, silica-alumina or zirconia. The base metal or base metal oxide comprises about 15% to 90% by weight of the total weight and the platinum group metal comprises 0.05% to 10% by weight of the total weight. The catalyst composition can be applied as a washcoat to conventional substrates or it can be formed into shaped catalysts. The washcoat is made by mixing together one slip containing the composite particles with a second slip containing the base metal or base metal oxide particles.Type: GrantFiled: August 15, 1984Date of Patent: April 29, 1986Assignee: W. R. Grace & Co.Inventor: Michael V. Ernest
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Patent number: 4544473Abstract: A catalytic body which is substantially amorphous is formed from at least two materials vacuum deposited on a cool substrate or sprayed on a cool surface to provide a local order non-equilibrium structural configuration. The amorphous body comprises a composition of at least one metal and a second component which maintains the amorphous character of the composition. The body has an increased number and desired type of catalytically active sites. In most applications, the composition includes at least initially a component which is removed by leaching or vaporization to leave a rough surface with a large surface to volume ratio. The resulting composition is sometimes annealed to relax or modify the local structure thereof to provide a more reactive structural configuration. In an electrode form of the invention, the catalytic body is highly conductive, resistant to corrosion and degradation under current reversal and has low overvoltage characteristics when used in electrochemical cells.Type: GrantFiled: May 12, 1980Date of Patent: October 1, 1985Assignee: Energy Conversion Devices, Inc.Inventors: Stanford R. Ovshinsky, Krishna Sapru
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Patent number: 4537875Abstract: Alumina, silica or silica-alumina containing catalysts are manufactured by incorporating at least one active element selected from the metals of the groups V, VI and VIII or their compounds to a carrier, and then drying and activating. The carrier or the catalyst is shaped into extrudates and the latter are crushed to coarse particles.Type: GrantFiled: December 27, 1983Date of Patent: August 27, 1985Assignee: Societe Francaise des Produits pour Catalyse Pro-CatalyseInventors: Herve Toulhoat, Jean-Claude Plumail, Marc Mercier, Yves Jacquin
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Patent number: 4522936Abstract: A supported tungsten oxide or supported molybdenum oxide is treated with elemental tungsten, silicon or antimony. The composition is useful as a metathesis catalyst.Type: GrantFiled: May 18, 1984Date of Patent: June 11, 1985Assignee: Phillips Petroleum CompanyInventors: Simon G. Kukes, Robert L. Banks
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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
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Patent number: 4477591Abstract: A catalyst useful for dehydrating an alkanolamine to form an alkylenimine is prepared by providing an aqueous or hydrofluoric acid solution of a tantalum or niobium compound, neutralizing this solution with ammonium hydroxide to precipitate the metal hydroxide, washing the precipitated metal hydroxide with water and subsequently dissolving it in an aqueous solution of a lower carboxylic acid, e.g. oxalic acid, applying the acid solution to a catalyst support to impregnate it with the metal hydroxide and finally drying and calcining the impregnated support to form the desired metal oxide catalyst. An alkaline earth metal oxide is optionally employed by impregnating the support with an aqueous solution of the alkaline earth metal hydroxide, preferably prior to the application of the catalyst.Type: GrantFiled: January 14, 1983Date of Patent: October 16, 1984Assignee: The Dow Chemical CompanyInventor: Enrique G. Ramirez
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Patent number: 4472533Abstract: Catalysts for use in promoting heterogeneous chemical reactions, such as hydrogenation, cracking, dehydrogenation and Fischer-Tropsch reactions, are prepared by depositing a catalytically active metal such as nickel electrolytically onto an aluminum substrate in such a manner that the metal particles are deposited in micro-particulate form to enhance their catalytic activity. The aluminum substrate is prepared by cleaning and anodizing it, so as to deposit thereon an aluminum oxide surface film having micro porosity. Then the substrate is immersed into an electrolysis bath of solution of salt of the metal to be deposited, and subjected to alternating current electrolysis to cause the required deposition. Prior to use, the catalysts so prepared should be heated to remove absorbed gases from their porous surfaces.Type: GrantFiled: December 15, 1982Date of Patent: September 18, 1984Assignee: The University of Toronto Innovations FoundationInventor: Martin Moskovits
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Patent number: 4467048Abstract: Compositions are disclosed which comprise a metal oxide substrate having niobium (V) hydride/oxide bound to the surface thereof.Type: GrantFiled: August 30, 1983Date of Patent: August 21, 1984Assignee: Shell Oil CompanyInventor: Thomas H. Johnson
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Patent number: 4467047Abstract: Compositions are disclosed which comprise a metal oxide substrate having tantalum (V) hydride/oxide bound to the surface thereof.Type: GrantFiled: August 30, 1983Date of Patent: August 21, 1984Assignee: Shell Oil CompanyInventor: Thomas H. Johnson
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Patent number: 4459372Abstract: Surface-metallated aluminas and silicas are species many of whose physical properties, such as surface and pore volume, are unchanged but which exhibit superior hydrothermal stability. Suitable for use as catalytic supports, these materials can be simply prepared by treating the alumina or silica with a tetrahalide of a metal, such as titanium or zirconium, removing the unreacted tetrahalide, and calcining the resulting material in a moist atmosphere.Type: GrantFiled: August 25, 1982Date of Patent: July 10, 1984Assignee: UOP Inc.Inventor: Blaise J. Arena
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Patent number: 4438219Abstract: An alumina catalyst, which has a desired porosity and surface area and is stable at high temperatures is formed by contacting a substrate with an alkali aluminate solution for a period of time sufficient to form an adherent film of hydrated alumina on the substrate, separating the substrate with the adherent film of hydrated alumina from the solution, heating the substrate and alumina film under calcining conditions until an alumina film of desired porosity and surface area is formed, and then contacting the calcined alumina film with a material which stabilizes the alumina during subsequent heating. Optionally, the alumina film can then be further calcined at a temperature higher than that used in the first calcining conditions, preferably at a temperature up to about 1260.degree. C. The stabilizing material can be one of several compounds including those of barium, silcon, and the rare earth metals.Type: GrantFiled: October 28, 1981Date of Patent: March 20, 1984Assignee: Texaco Inc.Inventors: John T. Brandenburg, John M. Crone, Jr.
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Attrition resistant bismuth-containing metal/oxygen compositions and a process for their preparation
Patent number: 4409133Abstract: Attrition resistant bismuth-containing metal/oxygen compositions comprising the infusion and reaction product of alumina and at least one bismuth oxide, or compound convertible by heat to such bismuth oxide, which bismuth oxide is susceptible of undergoing infusion and reaction with the alumina, are useful in metal oxide-catalyzed reactions. The compositions are especially useful in reactions which involve reaction conditions of high stress, for example, vapor phase oxidations under fluidized bed conditions.Type: GrantFiled: December 30, 1981Date of Patent: October 11, 1983Assignee: Monsanto CompanyInventors: Samuel J. Tremont, Robert A. Keppel, Emerson H. Lee, George D. Davis -
Patent number: 4409127Abstract: Attrition resistant metal/oxygen compositions comprising the infusion and reaction product of alumina and at least one metal oxide, or compound convertible by heat to such metal oxide, which metal oxide is susceptible of undergoing infusion and reaction with the alumina, are useful in a wide variety of metal oxide-catalyzed reactions. The compositions are especially useful in reactions which involve reaction conditions of high stress, for example, vapor phase oxidations under fluidized bed conditions.Type: GrantFiled: December 30, 1981Date of Patent: October 11, 1983Assignee: Monsanto CompanyInventors: Robert A. Keppel, Samuel J. Tremont, Emerson H. Lee, George D. Davis
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Patent number: 4407734Abstract: A catalyst that is especially useful in the production of aromatic nitriles by a fluidized bed process comprises highly attrition-resistant microspherical particles of vanadia and an inert support and is prepared by spray drying an aqueous slurry of finely divided particles of vanadia and the support.Type: GrantFiled: August 10, 1981Date of Patent: October 4, 1983Assignee: W. R. Grace & Co.Inventors: Dean A. Denton, Raymond D. Feldwick