And Group V Metal Containing (i.e., V, Nb, Ta, As, Sb Or Bi) Patents (Class 502/311)
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Patent number: 5883037Abstract: Thermally stable/highly reducible catalyst compositions, well suited for the catalytic conversion of exhaust gases emanating from internal combustion engines notably vehicular exhaust gases, comprise alumina, the oxides of cerium praseodymium and zirconium, and, optionally, at least one other oxide of bismuth, of a rare earth, or of an element of group VIII of the Periodic Table, and exhibit a stabilized hydrogen-absorption capacity up to a temperature of at least 1,000.degree. C.Type: GrantFiled: May 30, 1995Date of Patent: March 16, 1999Assignee: Rhone-Poulenc ChimieInventors: Thierry Chopin, Olivier Touret, Gabriel Vilmin
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Patent number: 5856259Abstract: A process for producing a supported catalyst for the synthesis of methacrolein and methacrylic acid in which a catalytic active substance comprising a composite oxide containing molybdenum and bismuth as essential components is supported on the inside surface and/or the outside surface of an inert carrier, which comprises the steps of drying a mixed solution or an aqueous slurry containing the compounds of the elements constituting the catalytic active substance, subjecting the dried product to a primary calcination at a temperature in a range of 200.degree.-400.degree. C. to form a catalytic active substance precursor, comminuting the obtained catalytic active substance precursor to such an extent that the medium particle size in the volume-based particle size distribution becomes 10 .mu.m or less, supporting the comminution product on an inert carrier, and subjecting it to a secondary calcination at a temperature which is 100.degree. C. or more higher than the primary calcination temperature.Type: GrantFiled: June 20, 1997Date of Patent: January 5, 1999Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Seigo Watanabe, Hitoshi Yoshioka, Jinko Izumi
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Patent number: 5837641Abstract: A method of continuously promoting the activity of solid strong acid catalysts used in acid catalyzed reactions by adding or generating water in the reaction mixture has been developed. The solid strong acid catalyst may be a sulfated metal oxide, a tungstated metal oxide, or a molybdated metal oxide. The metal oxides are oxides, hydroxides, oxyhydroxides, or oxide-hydrates of Group IV-A, Group III-A, Group III-B, and Group V-A metals. The catalyst may also contain a Group VIII metal, or when the metal oxide is a hydroxide, oxide, oxyhydroxide, or oxide-hydrate of the Group IV-A, Group III-A, or Group III-B metals, the catalyst may also contain an oxide, hydroxide, oxyhydroxide or oxide-hydrate of a Group V-A, Group V-B, Group VI-B, or Group VII-B metal as a promoter.Type: GrantFiled: January 16, 1996Date of Patent: November 17, 1998Assignee: UOP LLCInventors: Christopher D. Gosling, Paul G. Blommel, Michelle J. Cohn, Ralph D. Gillespie, Jennifer S. Holmgren
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Patent number: 5834394Abstract: A catalyst for ammoxidation of propylene to acrylonitrile, comprisinga) a catalytic composition represented by the following general formula:A.sub.a B.sub.b C.sub.c D.sub.d Na.sub.e Fe.sub.f Bi.sub.g Mo.sub.h O.sub.xwhereinA represents K, Rb, Cs, Tl, or a mixture thereof,B represents Mn, Mg, Sr, Ca, Ba, or a mixture thereof,C represents P, As, B, Sb, Cr, W, V, or a mixture thereof, andD represents one of the following groups:1) Ni alone,2) Co alone,3) Ni and one selected from Li, Pr, Nd, or a mixture thereof,4) Co and one selected from Li, Pr, Nd, or a mixture thereof,5) Ni, Co and one selected from Li, Pr, Nd, or a mixture thereof, anda=0.001.about.2.0,b=0.about.4.5,c=0.01.about.8.0,d=0.01.about.22.0,e=0.01.about.0.7,f=0.01.about.8.0,g=0.01.about.6.0,h=8.about.Type: GrantFiled: August 1, 1997Date of Patent: November 10, 1998Assignees: China-Petro-Chemical Corporation, Shanghai Research Institute of Petrochemical Engineering SinopecInventors: Xin Chen, Lianghua Wu
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Patent number: 5824621Abstract: An exhaust gas cleaner being constituted by a first catalyst of a first porous inorganic oxide supporting a silver component in combination with a W component and a second catalyst of a second porous inorganic oxide supporting a Pt component and optionally a W component. The Ag component may include Ag and compounds thereof, the Pt component may include Pt, Pd, Ru, Rh, Ir, and Au, and the W component may include W, V, Mn, Mo, Nb, and Ta. The W component effectively catalyzes the reduction of nitrogen oxides by ammonia to enhance the removal efficiency of the exhaust gas cleaner.Type: GrantFiled: June 27, 1995Date of Patent: October 20, 1998Assignee: Kabushiki Kaisha RikenInventors: Akira Abe, Kiyohide Yoshida, Gyo Muramatsu, Satoshi Sumiya, Naoko Irite, Mika Saito
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Patent number: 5821185Abstract: This invention provides catalytic proton and electron mediating membranes useful in catalytic reactors. The membranes have an oxidation and a reduction surface and comprise a single-phase mixed metal oxide material of the formula:AB.sub.1-x B'.sub.x O.sub.3-ywherein A is selected from Ca, Sr or Ba ions; B is selected from Ce, Tb, Pr, or Th ions; B' is selected from Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Al, Ga, or In ions, or combinations thereof; and x is greater than or equal to 0.02 and less than or equal to 0.5. The membranes can further comprise a catalyst on either the oxidation or reduction surface, or both. Membranes include those which are fabricated-by combining powders of metal oxides or metal carbonates of metal A ion, metal B ion and metal B' ion such that the stoichiometric ratio A:B:B' is 1:1-x:x where 0.2.ltoreq..times.0.5, repeatedly calcining and milling the combined powders until a single-phase material is obtained and pressing and sintering the singlephase material to obtain a membrane.Type: GrantFiled: June 21, 1995Date of Patent: October 13, 1998Assignee: Eltron Research, Inc.Inventors: James H. White, Michael Schwartz, Anthony F. Sammells
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Patent number: 5817592Abstract: A process for the preparation of a hydrogenation catalyst by reduction of platinum in an oxidation stage of not less than 2 in an aqueous medium in the presence of a carboniferous support, optionally following partial poisoning with a sulfur, arsenic, tellurium, or antimony-containing compound, using a reducing agent, in which the reducing agent used is an ammonium or phosphonium salt of the general formula I?XR.sup.4 !.sub.n Y Iin which X stands for N or P, R stands for hydrogen, C.sub.1 --C.sub.18 alkyl, C.sub.5 --C.sub.10 cycloalkyl, phenyl radical, and also a C.sub.1 --C.sub.4 alkyl radical substituted by phenyl, the phenyl radicals being mono-to tri-substituted by C.sub.1 --C.sub.6 alkyl, halogen, nitro or amino, if desired, provided that the radicals R may be the same or different but cannot simultaneously denote hydrogen, if X is P, n is an integer of 1 to 3, and Y is an organic anion which can reduce platinum in an oxidation stage other than zero to platinum in the oxidation stage of zero.Type: GrantFiled: January 23, 1996Date of Patent: October 6, 1998Assignee: BASF AktiengesellschaftInventors: Daniel Heineke, Heinz-Walter Schneider, Alfred Thome
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Patent number: 5817594Abstract: Catalyst comprising a porous inorganic refractory oxide wherein the catalyst has:(a) a total pore volume in the range of from 0.2 to 0.5 ml/g,(b) a macroporosity of at least 0.1 ml/g,(c) a microporosity of at least 0.05 ml/g, and(d) a surface area of at least 5 m.sup.2 /g.Process for reducing the amount of solid contaminants and the amount or dissolved metallic contaminants, wherein a hydrocarbon oil containing such contaminants is contacted with hydrogen under hydrotreating conditions in the presence of the above catalyst.Type: GrantFiled: November 2, 1995Date of Patent: October 6, 1998Assignee: Shell Oil CompanyInventors: David John McNamara, Willem Hartmann Jurriaan Stork
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Patent number: 5808143Abstract: Catalysts of the formula I?A.sub.a B.sub.b O.sub.x !.sub.p ?C.sub.c D.sub.d Fe.sub.e Co.sub.f E.sub.i F.sub.j O.sub.y !.sub.q I,whereA is bismuth, tellurium, antimony, tin and/or copper,B is molybdenum and/or tungsten,C is an alkali metal, thallium and/or samarium,D is an alkaline earth metal, nickel, copper, cobalt, manganese, zinc, tin, cerium, chromium, cadmium, molybdenum, bismuth and/or mercury,E is phosphorus, arsenic, boron and/or antimony,F is a rare-earth metal, vanadium and/or uranium,a is from 0.01 to 8,b is from 0.1 to 30,c is from 0 to 4,d is from 0 to 20,e is from 0 to 20,f is from 0 to 20,i is from 0 to 6,j is from 0 to 15,x and y are numbers determined by the valency and frequency of the elements other than oxygen in I, and p and q are numbers whose ratio p/q is in the range from 0.001 to 0.Type: GrantFiled: March 22, 1996Date of Patent: September 15, 1998Assignee: BASF AktiengesellschaftInventors: Lothar Karrer, Hans-Peter Neumann, Hans-Dieter Eichhorn, Robin Stuart Jarret
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Patent number: 5795559Abstract: A method for the preparation of new semi-crystalline, porous inorganic oxide compositions possessing uniform framework-confined mesopores in the range 2.0-10.0 nm. The method uses an interaction between various nonionic polyethylene oxide based surfactants (N.degree.) and neutral inorganic oxide precursors (I.sup..quadrature.) at ambient reaction temperatures. The materials formed exhibit a disordered assembly of worm-like channels of regular diameter owing to the specific mechanism of self-assembly, producing highly stable materials and particles incorporating large numbers of the channels. This (N.degree. I.degree.) templating approach introduces several new concepts to mesostructure synthesis. The application of the low-cost, non-toxic and biodegradable surfactants and ambient reaction temperatures, introduces environmentally clean synthetic techniques to the formation of mesostructures. Recovery of the template can be achieved through solvent extraction where the solvent may be water or ethanol.Type: GrantFiled: May 2, 1996Date of Patent: August 18, 1998Assignee: Board of Trustees operating Michigan State UniversityInventors: Thomas J. Pinnavaia, Stephen A. Bagshaw
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Patent number: 5763352Abstract: The composition based on a discharge from an oil refining plant after a desulfurization of heavy oils in the oil refining plant using a catalyst, comprising: 80% or less of vanadium; 80% or less of molybdenum; 20% or less of nickel; 30% or less of cobalt; 99% or less of alumina; and a trace of the impurities, which is catalytically active to purify the exhaust of diesel vehicles. A filter or a washcoat made of the discharged catalyst composition alone or in combination with ordinary filtering materials or ordinary washcoat materials can be very useful for purification of smoke. In addition, a catalyst in which at least one metal of the platinum group is uniformly impregnated on the filter is quite superior to conventional ones employing alumina or titania as a washcoat in stability to both high temperature and sulfur trioxide.Type: GrantFiled: June 22, 1995Date of Patent: June 9, 1998Assignee: Yukong Ltd.Inventors: Hyun-Jong Jung, Bon-Chul Ku, Yong-Woo Kim, Yong-Taek Choi, Ki-Ho Lee, Kyeong-Cheol Min, Jae-Woong Um
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Patent number: 5728643Abstract: The present invention provides an NO.sub.x decomposition catalyst which can decompose NO.sub.x in exhaust gas to decrease the amount of NO.sub.x in exhaust gas and is improved in durability through suppression of thermal decomposition thereof, and an exhaust gas purifier wherein said catalyst is used. This NO.sub.x decomposition catalyst is a compound having a brownmillerite type structure represented by the general formula: A.sub.3-X B.sub.X C.sub.4-Y D.sub.Y O.sub.Z, the carbon content of which compound may be at most 1.25 wt. %. This NO.sub.x decomposition catalyst can be used in an exhaust gas purifier applicable to an internal combustion engine.Type: GrantFiled: January 24, 1997Date of Patent: March 17, 1998Assignee: Isuzu Ceramics Research Institute Co., Ltd.Inventors: Isao Naitoh, Kazuo Ohsumi
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Patent number: 5700752Abstract: A catalyst for the production of unsaturated aldehyde and unsaturated carboxylic acid by the vapor-phase catalytic oxidation of at least one compound selected from the group consisting of propylene, isobutylene, t-butanol and methyl-t-butyl ether and a method for the production of unsaturated aldehyde and unsaturated carboxylic acid by the use of this catalyst are provided. The catalyst of this invention comprises (A) a catalyst having Mo, Bi and Fe as essential components and used for the production of unsaturated aldehyde and unsaturated carboxylic acid by vapor-phase catalytic oxidation of propylene, isobutylene, t-butanol and/or methyl-t-butyl ether and (B) a solid acid having acid strength (Ho) of not more than -11.93. Since this catalyst excels in catalytic activity and service life, it allows unsaturated aldehyde and unsaturated carboxylic acid to be produced stably at a high yield for a long time.Type: GrantFiled: May 31, 1995Date of Patent: December 23, 1997Assignee: Nippon Shokubai Co. Ltd.Inventors: Ikuo Kurimoto, Tatsuya Kawajiri, Hideo Onodera, Michio Tanimoto, Yukio Aoki
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Patent number: 5696047Abstract: Disclosed is a process comprising the heat treatment of certain V and Sb-containing catalysts at a lower temperature than the previous calcination temperature of the base catalyst to improve catalytic performance; the catalysts resulting from such process; and certain oxidation and ammoxidation reactions in the presence of such a catalyst.Type: GrantFiled: May 26, 1995Date of Patent: December 9, 1997Assignee: BP America Inc.Inventors: Noel L. Bremer, Linda C. Brazdil, James F. Brazdil, Fernando A. P. Cavalcanti
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Patent number: 5681790Abstract: This invention relates to a novel catalyst for preparing methacrylic acid by gas phase oxidation of methacrolein obtained by gas phase catalytic oxidation of isobutylene or t-butanol. The catalyst is represented by the formula:P.sub.a Mo.sub.11 V.sub.b Du.sub.c X.sub.d Q.sub.e Z.sub.f O.sub.gwhereinX is at least one of potassium, rubium, cessium, and thallium;Z is at least one of lead, antimony, chromium, iron, bismuth, cerium, and zinc;Q is at least one of organic quaternary ammonium cations consisting of ##STR1## in which R, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently selected from the group consisting of C.sub.1 -C.sub.5 alkyl or C.sub.1 -C.sub.5 substituted alkyl having functional groups;a is a number from 0.8 to 1.6;b is a number from 0.6 to 2;c is a number from 0.1 to 0.8;d is a number from 0.7 to 2.2;e is a number from 0.01 to 0.1;f is a number from 0 to 0.5; andg is a number of oxygens required to satisfy the valence requirements of the other elements present.Type: GrantFiled: November 30, 1995Date of Patent: October 28, 1997Assignee: Samsung General Chemicals Co., Ltd.Inventors: Young Chul Kim, Ki Hwa Lee, Eun Hee Jin
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Patent number: 5677261Abstract: A catalyst which consists of a carrier and a catalytically active oxide material applied to the surface of the carrier is prepared by a process in which the carrier is first moistened with, as an adhesive liquid, an aqueous solution of an organic substance boiling at above 100.degree. C. at atmospheric pressure and a layer of active oxide material is then bonded to the surface of the moistened carrier by bringing it into contact with dry, finely divided active oxide material and the adhesive liquid is then removed from the moistened carrier coated with active oxide material.Type: GrantFiled: November 24, 1995Date of Patent: October 14, 1997Assignee: BASF AktiengesellschaftInventors: Andreas Tenten, Peter Weidlich, Gerd Linden
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Patent number: 5663113Abstract: Disclosed is an ammoxidation catalyst composition for use in producing acrylonitrile from propylene, or methacrylonitrile from isobutene or tert-butanol, by ammoxidation of the propylene or of the isobutene or tert-butanol, comprising an oxide catalyst composition represented by the formula:Mo.sub.12 (Bi.sub.1-a A.sub.a).sub.b Fe.sub.c Co.sub.d X.sub.e Y.sub.f O.sub.g,wherein A is at least one rare earth element, X is at least one element selected from the group consisting of nickel, magnesium, zinc and manganese, Y is at least one element selected from the group consisting of potassium, rubidium and cesium, a is a number of from 0.6 to 0.8, b is a number of from 0.5 to 2, c is a number of from 0.1 to 3, d is a number of from more than 0 to 10, e is a number of from 0 to 8, f is a number of from 0.01 to 2, and g is a number determined by the valence requirements of the other elements present.Type: GrantFiled: February 16, 1996Date of Patent: September 2, 1997Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Hideo Midorikawa, Ken Someya
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Patent number: 5658842Abstract: Disclosed is an ammoxidation catalyst composition for use in producing acrylonitrile from propylene, or methacrylonitrile from isobutene or tert-butanol, by ammoxidation of the propylene or of the isobutene or tert-butanol, comprising an oxide catalyst composition represented by the formula:Mo.sub.12 (Bi.sub.1-a A.sub.a).sub.b Fe.sub.c Ni.sub.d X.sub.e Y.sub.f O.sub.g,whereinA is at least one rare earth element,X is at least one element selected from magnesium and zinc,Y is at least one element selected from potassium, rubidium and cesium,a is a number of from 0.6 to 0.8,b is a number of from 0.5 to 2,c is a number of from 0.1 to 3,d is a number of from 4 to 10,e is a number of from 0 to 3,f is a number of from 0.01 to 2, andg is a number determined by the valence requirements of the other elements present.Type: GrantFiled: December 27, 1995Date of Patent: August 19, 1997Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Hideo Midorikawa, Ken Someya, Kunitoshi Aoki, Osamu Nagano
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Patent number: 5656567Abstract: A catalyst unit (16), in which a quantity of a relatively expensive material such as platinum is replaced by a greater quantity of a relatively inexpensive material such as palladium. Thus, material cost saved by "tailoring" a pack is used to pay for a large quantity of a cheaper material. Although the cheaper material is generally less intrinsically efficient than the expensive material, a sufficient additional amount of the cheaper material can be used to more than compensate for this lack of efficiency. Thus, a catalytic pack of high catalytic efficiency, low material cost, low metal loss and long run duration can be produced.Type: GrantFiled: March 9, 1995Date of Patent: August 12, 1997Assignee: PGP Industries, Inc.Inventor: Alan Edward Heywood
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Patent number: 5637545Abstract: This invention relates to novel crystalline metallo manganese oxides that has the hollandite structure. The composition is represented by the formulaA.sub.y Mn.sub.8-x M.sub.x O.sub.16where A is a templating agent such as potassium, ammonium, and y varies from about 0.5 to about 2.0, M is a metal such as chromium, vanadium, gallium, antimony and x varies from about 0.01 to about 4.0. These oxides have a three-dimensional structure with manganese and the M metals forming the framework. Finally, these novel oxides are capable of catalyzing hydrocarbon conversion processes such as oxidation and oxidative dehydrogenation.Type: GrantFiled: June 6, 1995Date of Patent: June 10, 1997Assignee: UOPInventor: Gregory J. Lewis
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Patent number: 5637546Abstract: In a process for the preparation of catalytically active poly-metal oxide materials containing Mo and V, a catalyst intermediate is calcined at from 300.degree. to 450.degree. C. in a gas atmosphere which, in addition to inert gases and/or steam, consists of from 0.5 to 4% by volume of O.sub.2 and, averaged over the calcination time, from 1 to 8% by volume of NH.sub.3.Type: GrantFiled: April 19, 1996Date of Patent: June 10, 1997Assignee: BASF AktiengesellschaftInventors: Andreas Tenten, Ulrich Hammon, Peter Weidlich
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Patent number: 5583086Abstract: Cesium based multimetal oxide compositions which are suitable as catalysts for the gas-phase-catalytic oxidative preparation of methacrolein from isobutene or tert-butanol or its methyl ether. The catalysts are characterized by increased selectivity for the formation of methacrolein. The catalysts have locally delimited regions of an oxide composition, preferably (Bi.sub.2 W.sub.2 O.sub.9), surrounded by the remaining constituents of the multimetal oxide.Type: GrantFiled: February 25, 1994Date of Patent: December 10, 1996Assignee: BASF AktiengesellschaftInventors: Andreas Tenten, Hans-Peter Neumann, Herbert Exner
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Patent number: 5582809Abstract: A catalyst for reducing nitrogen oxides into nitrogen and water in the presence of a reducing agent, which comprises:(a) titanium;(b) at least one element selected from the group consisting of tungsten and molybdenum in a total amount of 10-25% by weight in terms of oxides; and(c) niobium in an amount of 0.1-2% by weight in terms of oxides.Type: GrantFiled: July 19, 1994Date of Patent: December 10, 1996Assignees: Sakai Chemical Industry Co., Ltd., Mitsubishi Jukogyo Kabushiki KaishaInventors: Hiroaki Rikimaru, Toshikatsu Umaba, Yoshiyuki Yoshikawa
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Patent number: 5583084Abstract: Multimetal oxide compositions having a two-phase structure and comprising molybdenum, hydrogen, one or more of the elements phosphorus, arsenic, boron, germanium and silicon, and their use for the preparation of methacrylic acid by gas-phase catalytic oxidation.Type: GrantFiled: February 15, 1995Date of Patent: December 10, 1996Assignee: BASF AktiengesellschaftInventors: Friedrich-Georg Martin, Hans-Peter Neumann, Hartmut Hibst
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Patent number: 5569636Abstract: Multimetal oxide compositions having a two-phase structure and comprising molybdenum, hydrogen, one or more of the elements phosphorus, arsenic, boron, germanium and silicon, and copper, and their use for the preparation of methacrylic acid by gas-phase catalytic oxidation.Type: GrantFiled: February 16, 1995Date of Patent: October 29, 1996Assignee: BASF AktiengesellschaftInventors: Friedrich-Georg Martin, Hartmut Hibst, Andreas Tenten
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Patent number: 5552362Abstract: Catalysts useful for the removal of volatile sulfur compounds from industrial gases composed of an inorganic, abrasion-resistant, incombustible support which is uniformly impregnated with either (a) an oxide or hydroxide of niobium or tantalum or (b) an oxide or hydroxide of manganese and an oxide or hydroxide of hafnium, lanthanum or an element in the Lanthanide Series of Elements.Type: GrantFiled: October 20, 1994Date of Patent: September 3, 1996Assignee: Bayer AktiengesellschaftInventors: Otto Immel, Harald M uller
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Patent number: 5532199Abstract: A carrier-supported catalyst for the synthesis of unsaturated aldehydes and unsaturated carboxylic acids, comprising a catalyst active substance comprising at least molybdenum and bismuth as its components, glass fiber having an average diameter in a range of more than 5 .mu.m and not more than 200 .mu.m and an average length in a range of from 50 .mu.m to 1 mm, which is used as a carrier assistant in an amount of 0.5-50% by weight based on the catalyst active substance, and a carrier. The carrier-supported catalyst of this invention suffers no release or fall-off of the catalyst active substance from the carrier even if the catalyst supporting rate is increased. It also has high mechanical strength and is helpful for providing the objective product in a high yield.Type: GrantFiled: December 20, 1994Date of Patent: July 2, 1996Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Seigo Watanabe, Motomu Oh-Kita
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Patent number: 5521137Abstract: Multimetal oxide compositions having a two-phase structure and comprising molybdenum, hydrogen, one or more of the elements phosphorus, arsenic, boron, germanium and silicon, one or more of the elements niobium, tantalum and antimony and one or more of the elements copper, iron, cobalt, nickel, zinc, cadmium, manganese, magnesium, calcium, strontium and barium, and their use for the preparation of methacrylic acid by gas-phase catalytic oxidation.Type: GrantFiled: February 17, 1995Date of Patent: May 28, 1996Assignee: BASF AktiengesellschaftInventors: Friedrich-Georg Martin, Andreas Tenten
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Patent number: 5502020Abstract: A catalyst for the production of ethylene oxide which contains silver, tungsten, cesium and, in some cases, an alkaline metal other than cesium, an alkaline-earth metal, a rare-earth metal, and/or metal selected from Groups I B, II B, III B, IV A, IV B, V A, V B and VI A of the Periodic Table and tellurium. The use of the catalyst of this invention provides high selectivity in the production of ethylene oxide by the vapor contact oxidation of ethylene.Type: GrantFiled: April 4, 1994Date of Patent: March 26, 1996Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Tomoatsu Iwakura, Yukako Kawakatsu
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Patent number: 5498588Abstract: The process of manufacturing a catalyst having the following empirical formula:VSb.sub.m A.sub.a D.sub.d O.sub.xwhere A is one or more of Ti, Sn, Fe, Cr, Ga, Li, Mg, Ca, Sr, Ba, Co, Ni, Zn, Ge, Nb, Zr, Mo, W, Cu, Te, Ta, Se, Bi, Ce, In, As, B and Mn,D is one or more of Li, Ag, Fe, Co, Cu, Cr, Mn, (VO).sup.2+, (PW.sub.12 O.sub.40).sup.3- and (PMo.sub.12 O.sub.40).sup.3-m is from about 0.5 to 10a is 0.01 to 10d is 0.0001 to 2.0, preferably 0.0001 to 0.1;x=number of oxygen ions necessary to satisfy the valency requirementcomprising forming a catalyst precursor having the formula VSbmAaOx wherein m, A, a and x are defined above, adding at least one D element to the surface of said catalyst precursor and calcining the surface modified catalyst precursor to produce said catalyst.Type: GrantFiled: September 9, 1994Date of Patent: March 12, 1996Assignee: The Standard Oil CompanyInventors: James F. Brazdil, Fernando A. P. Cavalcanti
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Patent number: 5491258Abstract: For providing a molded catalyst or a supported catalyst which has an excellent mechanical strength and is intended for producing methacrolein and methacrylic acid from isobutylene or tertiary butanol, the surface of a molded catalyst or a supported catalyst which contains molybdenum, bismuth and iron is coated with one or more highly depolymerizable organic high-molecular weight compounds.When used, the catalyst is packed into a reactor and then heated to remove the organic high-molecular weight compound(s) by depolymerization.Type: GrantFiled: September 12, 1994Date of Patent: February 13, 1996Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Seigo Watanabe, Motomu Ohkita
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Patent number: 5472925Abstract: A catalyst for the production of a nitrile from an alkane, which satisfies the following conditions 1 and 2:1 the catalyst is represented by the empirical formula:Mo.sub.a V.sub.b Te.sub.c X.sub.x O.sub.n (1)wherein X is at least one element selected from the group consisting of Nb, Ta, W, Ti, Al, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ni, Pd, Pt, Sb, Bi, B and Ce,when a=1,b=0.01 to 1.0,c=0.01 to 1.0,x=0.01 to 1.0,and n is a number such that the total valency of the metal elements is satisfied; and2 the catalyst has X-ray diffraction peaks at the following angles of 2.theta. in its X-ray diffraction pattern:Diffractionangles of 2.theta. (.degree.)22.1.+-.0.328.2.+-.0.336.2.+-.0.345.2.+-.0.350.0.+-.0.3.Type: GrantFiled: February 7, 1994Date of Patent: December 5, 1995Assignee: Mitsubishi Chemical CorporationInventors: Takashi Ushikubo, Kazunori Oshima, Atsushi Kayo, Tiaki Umezawa, Ken-ichi Kiyono, Itaru Sawaki, Hiroya Nakamura
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Patent number: 5446004Abstract: Multimetal oxide compositions which comprise, as basic constituents, the elements Mo, V, W, Cu and Ni in oxidic form in certain molar ratios, and the preparation of these multimetal oxide compositions, and their use as catalysts for the gas-phase catalytical oxidation of acrolein to acrylic acid.Type: GrantFiled: January 28, 1994Date of Patent: August 29, 1995Assignee: BASF AktiengesellschaftInventors: Andreas Tenten, Peter Weidlich
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Patent number: 5436215Abstract: A mild hydrocracking process for the hydrodemetallation (HDM), hydrodesulfurization (HDS) and hydroconversion (HC) of hydrocarbon feedstocks such as residuum feedstocks which provides increased conversion and increased yields of middle distillates is disclosed. The process utilizes a catalyst comprising about 1.0 to about 6.0 wt. % of an oxide of a Group VIII metal, about 12.0 to about 25.0 wt. % of an oxide of molybdenum and 0 to about 5.0 wt. % of an oxide of phosphorus supported on a porous alumina support containing about 0.1 to about 10.0 wt. % of lithium oxide.Type: GrantFiled: December 6, 1993Date of Patent: July 25, 1995Assignee: Texaco Inc.Inventors: Pei-Shing E. Dai, Charles N. Campbell, II, Joseph A. Durkin, David E. Sherwood, Jr.
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Patent number: 5432141Abstract: This invention relates to a process for preparing an attrition resistant vanadium-antimony oxide catalyst by adding to a vanadium-antimony oxide catalyst slurry a lithium compound which upon contact with the aqueous catalyst slurry provides hydroxide, such as lithium hydroxide or lithium carbonate. The process comprises the steps of preparing a catalyst slurry comprising vanadium oxide and antimony oxide, adding the lithium compound to the catalyst slurry, concentrating the catalyst slurry to increase the solids content of the slurry, and drying the catalyst slurry to form attrition resistant particles of catalyst.Type: GrantFiled: March 15, 1994Date of Patent: July 11, 1995Assignee: The Standard Oil CompanyInventors: James F. Brazdil, Jr., Joseph P. Bartek
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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: 5420091Abstract: A method of preparing a catalyst used for producing methacrylic acids through gas phase catalytic oxidation of methacrolein with molecular oxygen. The catalyst is represented by the formula:P.sub.a Mo.sub.b V.sub.c Ge.sub.d X.sub.e Y.sub.f Z.sub.g O.sub.hwherein P, Mo, V, Ge and O represent phosphorous, molybdenum, vanadium, germanium and oxygen, respectively; X represents at least one element selected from the group consisting of arsenic, antimony, bismuth, zirconium, tellurium, silver and boron; Y represents at lest one element selected from the group consisting of iron, copper, zinc, chromium, magnesium, tantalum, manganese, barium, gallium, cerium and lanthanum; Z represents at least one element selected from the group consisting of potassium, rubidium, cesium and thallium, and a, b, c, d, e, f, g and h represent the atomic ratios of the respective elements, and when b=12, then a=0.5-3, c=0.01-3, d=0.01-3, e=0-3, f=0-3, g=0.Type: GrantFiled: July 13, 1993Date of Patent: May 30, 1995Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Toru Kuroda, Motomu Oh-Kita
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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
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Patent number: 5275994Abstract: A process of preparing a catalyst for removal of sulfur and nitrogen in hydro-processing of hydrocarbon streams. The catalyst composition is formed by depositing molybdenum or tungsten. A second metal is deposited on the support layer in a non-aqueous fashion. The second metal being vandium, niobium or tantalum in organic solvent soluble metal alkoxide form. A third metal of nickel or cobalt is deposited and calcined on the support layer.Type: GrantFiled: June 17, 1991Date of Patent: January 4, 1994Assignee: Texaco Inc.Inventors: Jeffrey G. Weissman, Gerald G. Sandford, Max R. Cesar
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Patent number: 5260250Abstract: A catalyst for the production of ethylene and/or acetic acid by oxidation of ethane and/or ethylene with a molecular oxygen-containing gas in the presence of a catalyst composition comprising the elements A, X and Y in the combination with oxygen, the gram-atom ratios of the elements A:X:Y being a:b:c;wherein A=Mo.sub.d Re.sub.e W.sub.f ; X=Cr, Mn, Nb, Ta, Ti, V and/or W; Y=Bi, Ca, Co, Cu, Fe, K, Mg, Ni, P, Pb, Sb, Si, Sn, Tl and/or U; a=1; b=0 to 2; c=0 to 2; d+e+f+a; d is either zero or greater than zero; e is greater than zero; and f is either zero or greater than zero.Type: GrantFiled: January 29, 1993Date of Patent: November 9, 1993Assignee: BP Chemicals LimitedInventor: Melanie Kitson
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Patent number: 5250485Abstract: A process for preparing a catalyst used for production of methacrolein and methacrylic acid by vapor phase oxidation of isobutylene or tertiary butanol includes adding an organic high-molecular weight compound having an average particle size of 0.01 .mu.m to 10 .mu.m, especially polymethyl methacrylate and/or polystyrene, to a MoBiFeCoNi-based catalyst, then molding the mixture and heat treating the molded product.Type: GrantFiled: July 8, 1992Date of Patent: October 5, 1993Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Toru Kuroda, Motomu Oh-Kita
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Patent number: 5173468Abstract: Compositions of the formula IMO.sub.12 P.sub.a V.sub.b X.sup.1.sub.c X.sup.2.sub.d X.sup.3.sub.e Sb.sub.f Re.sub.g S.sub.h O.sub.n (I)whereX.sup.1 is potassium, rubidium and/or cesium,X.sup.2 is copper and/or silver,X.sup.3 is cerium, boron, zirconium, manganese and/or bismuth,a is from 0.5 to 3.0,b is from 0.01 to 3.0,c is from 0.2 to 3.0,d is from 0.01 to 2.0,e is from 0 to 2.0,f is from 0.01 to 2.0,g is from 0 to 1.0,h is from 0.001 to 0.5 andn is a number determined by the valency and content ofthe elements different from oxygen in I, are used as catalysts for preparing methacrylic acid by gas-phase oxidation of methacrolein.Type: GrantFiled: July 12, 1991Date of Patent: December 22, 1992Assignee: BASF AktiengesellschaftInventors: Karl-Heinz Boehning, Gerd Duembgen, Ulrich Hammon, Richard Krabetz, Franz Merger, Matthias Schwarzmann, Fritz Thiessen, Herbert Vogel
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Patent number: 5166119Abstract: A method for preparing a multicomponent catalyst including molybdenum, bismuth, iron and cesium or thallium for producing methacrolein and methacrylic acid by the gas-phase catalytic oxidation of isobutylene or tert-butanol with molecular oxygen, wherein an aqueous nitric acid solution containing 0.01 to 0.36 mole of nitric acid per mole of ammonium molybdate, which is a material for the molybdenum component of the catalyst, and at least one material for the bismuth, iron, cesium and thallium components of the catalyst is added to an aqueous solution containing ammonium molybdate and materials for the remaining catalyst components, if any, to obtain a slurry which is then dried and calcined, provided that the nitric acid excludes nitric acid radicals contained in the materials containing the catalyst components. The amount of nitric acid used is controlled in a particular range, so that a highly active catalyst for gas-phase catalytic oxidation is obtained.Type: GrantFiled: September 18, 1990Date of Patent: November 24, 1992Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Motomu Oh-Kita, Yoshiyuki Taniguchi
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Patent number: 5139988Abstract: A composition which contains as essential components: crystalline iron antimonate and at least one element selected from the group consisting of vanadium, molybdenum, and tungsten; is useful as a catalyst in the oxidation reaction of organic compounds. Also, a process for producing the composition is disclosed.Type: GrantFiled: September 17, 1991Date of Patent: August 18, 1992Assignee: Nitto Chemical Industry Co., Ltd.Inventors: Yutaka Sasaki, Hiroshi Utsumi, Kenichi Miyaki
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Patent number: 5132269Abstract: An iron-antimony-molybdenum-containing oxide catalyst composition for oxidation reactions, comprising a crystalline iron antimonate having a crystallite size of 100 .ANG. or more, said catalyst being represented by the following empirical formula:Fe.sub.a Sb.sub.b Mo.sub.c L.sub.d K.sub.e M.sub.m N.sub.n Q.sub.q R.sub.r T.sub.t O.sub.Type: GrantFiled: September 9, 1991Date of Patent: July 21, 1992Assignee: Nitto Chemical Industry Co., Ltd.Inventors: Yutaka Sasaki, Hiroshi Yamamoto, Koichi Mizutani, Kiyoshi Moriya, Kunio Mori
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Patent number: 5116796Abstract: The present invention discloses two polyoxoanion supported metal complexes found to be useful in olefin hydrogenation. The complexes are novel compositions of matter which are soluble in organic solvents. In particular, the compositions of matter comprise A.sub.x [L.sub.n Ir.sup.(I) .multidot.X.sub.2 M.sub.15 M'.sub.3 O.sub.62 ].sup.x- and A.sub.y [L.sub.n Ir.sup.(I) .multidot.X.sub.2 M.sub.9 M'.sub.3 O.sub.40 ].sup.y- where L is a ligand preferably chosen from 1,5-cyclooctadiene (COD), ethylene, cyclooctene, norbornadiene and other olefinic ligands; n=1 or 2 depending upon the number of double bonds present in the ligand L; X is a "hetero" atom chosen from B, Si, Ge, P, As, Se, Te, I, Co, Mn and Cu; M is either W or Mo; M' is preferably Nb or V but Ti, Zr, Ta, Hf are also useful; and A is a countercation preferably selected from tetrabutyl ammonium and alkali metal ions.Type: GrantFiled: October 26, 1988Date of Patent: May 26, 1992Assignee: The University of OregonInventors: David J. Edlund, Richard G. Finke, Robert J. Saxton
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Patent number: 5091354Abstract: Site-specific, framework substituted heteropolyacid or a polyoxoanion catalysts useful in alkane oxidation processes.Type: GrantFiled: July 11, 1990Date of Patent: February 25, 1992Assignee: Sun Refining and Marketing CompanyInventors: Paul E. Ellis, Jr., James E. Lyons
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Patent number: 4925823Abstract: Oxidation catalysts of the general formulaMo.sub.12 P.sub.a W.sub.b Sb.sub.c As.sub.d Cu.sub.e X.sub.f O.sub.xwhereX is Nb, Fe, Mn, Sn and/or Cr,a is 0.1-3,b is 0.1-4,c is <0-2,d is 0-1,e is 0-1,d+e is <0-2,f is 0-1.5,e+f is 0-2 andx is the number of oxygen atoms formally required to saturate the valencies of the other catalyst components,may be used particularly advantageously for the preparation of methacrylic acid by gas phase oxidation of methacrolein.Type: GrantFiled: June 19, 1986Date of Patent: May 15, 1990Assignee: BASF AktiengesellschaftInventors: Richard Krabetz, Gerd Duembgen, Friedbert Nees, Franz Merger, Gerd Fouquet
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Patent number: 4916103Abstract: A catalytically active composition for the gas phase oxidation of propylene to acrolein and acrylic acid, of the general formulaMo.sub.12 Bi.sub.0.1-10 Fe.sub.0.8-12 [Co,Ni].sub.0.1-10 P.sub.0-2 A.sub.0-10 B.sub.0.001-1 O.sub.xwhere A is arsenic, antimony, tin, thallium, tungsten, an alkaline earth metal, zinc and/or chromium, B is at least one of the metals sodium, potassium, rubidium, cesium and/or indium and X is the number determined by the atomic valences of the individual elements, is prepared by introducing all or some of the iron and molybdenum in the form of dried pulverulent iron molybdate gel into an aqueous solution or suspension of the other constituents and gelating the mixture by stirring and possibly heating, then comminuting, drying at elevated temperatures and finally calcining.Type: GrantFiled: November 25, 1988Date of Patent: April 10, 1990Assignee: BASF AktiengesellschaftInventors: Hans Martan, Matthias Schwarzmann, Karl-Heinz Boehning, Heinz Dreyer
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Patent number: 4873217Abstract: A catalyst used for producing, by catalytic gas phase oxidation of a C.sub.3 -C.sub.5 oelfin or tertiary alcohol, the corresponding unsaturated aldehyde and unsaturated carboxylic acid, said catalyst characterized by comprising molybdenum, iron and bismuth and having a specific surface area in the range from 1 to 20 m.sup.2 /gr, a pore volume in the range from 0.1 to 1.0 cc/gr and a pore diameter distribution in which the pore diameters are collectively distributed in the range of each of from 1 to 10 microns and from 0.1 to less than 1 micron; and a process for preparing said catalyst by charging an unfired material power into a centrifugal flow coating device to form particles having the average particle diameter of 2 to 10 mm and then firing the particles.Type: GrantFiled: February 17, 1988Date of Patent: October 10, 1989Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Tatsuya Kawajiri, Hideo Onodera, Shinichi Uchida, Yukio Aoki, Masahiro Wada