Selenium Or Tellurium Or Compound Containing Same Patents (Class 502/215)
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Publication number: 20110178332Abstract: The present invention provides a catalyst for use in gas-phase contact oxidation of hydrocarbon with an improved yield and selectivity, a preparation method thereof, and a method of a gas-phase oxidation of the hydrocarbon using the same. The catalyst comprises a composite metal oxide of Mo, V, Te and Nb; and a tungsten or tungsten oxide attached to the composite metal oxide, wherein an atomic molar ratio of the tungsten attached to the composite metal oxide to the molybdenum contained in the composite metal oxide ranges from 0.00001:1 to 0.02:1.Type: ApplicationFiled: June 9, 2009Publication date: July 21, 2011Applicants: LG CHEM, LTD, SNU R&DB FOUNDATIONInventors: Jin-Do Kim, Kyong-Yong Cha, Bu-Young Jo, Sang-Heup Moon
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Publication number: 20110178333Abstract: The present invention provides a catalyst for use in gas-phase contact oxidation of hydrocarbon with an improved yield and selectivity, a preparation method thereof, and a method of a gas-phase oxidation of the hydrocarbon using the same. The catalyst comprises a composite metal oxide of Mo, V, Te and Nb; and a palladium or palladium oxide attached to the composite metal oxide, wherein an atomic molar ratio of the palladium attached to the composite metal oxide to the molybdenum contained in the composite metal oxide ranges from 0.00001:1 to 0.02:1.Type: ApplicationFiled: June 9, 2009Publication date: July 21, 2011Applicants: LG CHEM, LTD., SNU R&DB FOUNDATIONInventors: Jin-Do Kim, Kyong-Yong Cha, Sang-Seop Kum, Sang-Heup Moon
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Publication number: 20110166012Abstract: In one embodiment, the catalyst assembly includes a two-dimension (2-D) extensive catalyst having a catalyst crystal plane; and a substrate supporting the 2-D extensive catalyst and having a substrate crystal plane in substantial alignment with the catalyst crystal plane. In certain instances, the catalyst crystal plane includes first and second adjacent catalyst atoms defining a catalyst atomic distance, the substrate crystal plane includes first and second adjacent substrate atoms defining a substrate atomic distance, a percent difference between the catalyst and substrate atomic distances is less than 10 percent.Type: ApplicationFiled: October 26, 2010Publication date: July 7, 2011Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Jun Yang, Shinichi Hirano, Richard E. Soltis, Andrew Robert Drews, Andrea Pulskamp, James Waldecker
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Publication number: 20110163044Abstract: A ceramic structure for water treatment, a water treatment apparatus and method are provided. Immersion efficiency of a photo catalyst and a specific surface area of the immersed photo catalyst can be improved using a ceramic medium including a ceramic paper prepared of a ceramic fiber. Accordingly, it is possible to provide the water treatment apparatus and method capable of increasing decomposition efficiency of contaminated materials due to irradiation of ultraviolet light, and so on, enabling continuous purification treatment, and remarkably reducing preparation, management and water treatment expenses.Type: ApplicationFiled: December 23, 2010Publication date: July 7, 2011Applicant: LG HAUSYS, LTD.Inventors: Moonsuk HAN, Ju-Hyung Lee, Seongmoon Jung
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Publication number: 20110143913Abstract: According to one aspect of the present invention, there is provided a catalyst assembly. In one embodiment, the catalyst assembly includes a two-dimension (2-D) extensive catalyst including one or more precious catalytic metals and having a catalyst crystal plane; and a substrate supporting the 2-D extensive catalyst, the substrate including one or more non-precious catalytic metals and having a substrate crystal plane in substantial alignment with the catalyst crystal plane.Type: ApplicationFiled: October 26, 2010Publication date: June 16, 2011Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Jun Yang, Shinichi Hirano, Richard E. Soltis, Andrew Robert Drews, Andrea Pulskamp, James Waldecker
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Patent number: 7923171Abstract: A cathode catalyst of the present invention includes an A-B-Ch compound, where A is a metal selected from the group consisting of Pt, Ru, Rh, and combinations thereof, B is a metal selected from the group consisting of Bi, Pb, Tl, Sb, Sn, In, Ga, Ge, and combinations thereof, and Ch is an element selected from the group consisting of S, Se, Te, and combinations thereof. The cathode catalyst may be used in a membrane-electrode assembly and a fuel cell.Type: GrantFiled: January 18, 2007Date of Patent: April 12, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Alexey Alexandrovichserov, Chan Kwak, Si-Hyun Lee
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Patent number: 7919428Abstract: The present invention comprises a method for preparing a mixed oxide catalyst for use in producing acrylonitrile or methacrylonitrile from propane or isobutene by ammoxidation in a gaseous phase via methods of heating or calcining precursor solid mixture to obtain mixed metal oxide catalyst compositions that exhibit catalytic activity.Type: GrantFiled: December 4, 2007Date of Patent: April 5, 2011Assignee: Ineos USA LLCInventors: Bhagya Chandra Sutradhar, Thomas L. Szabo, Muin S. Haddad, Mark A. Toft, Christos Paparizos, Lina K. Bodiwala
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Publication number: 20100323274Abstract: This invention provides a fuel cell electrode catalyst in which at least one transition metal element and at least one chalcogen element are supported on a conductive support, wherein the fuel cell electrode catalyst comprises a core portion comprising a transition metal crystal and a shell portion comprising surface atoms of the transition metal crystal particle and chalcogen elements coordinating to the surface atoms, and the outer circumference of the core portion is being partially covered with the shell portion. The fuel cell electrode catalyst has a high level of oxygen reduction performance, high activity as a fuel cell catalyst and comprises a transition metal element and a chalcogen element.Type: ApplicationFiled: July 9, 2008Publication date: December 23, 2010Inventors: Yukiyoshi Ueno, Hirofumi Iisaka
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Publication number: 20100286450Abstract: The invention relates to mixed oxide catalysts for the catalytic gas phase oxidation of alkanes, or mixtures of alkanes and olefins, for the production of aldehydes and carboxylic acids with air or oxygen in the presence of inert gases at elevated temperatures and pressure, and a method for the production of catalysts.Type: ApplicationFiled: October 17, 2007Publication date: November 11, 2010Inventors: Achim Fischer, Weimin Lu, Christoph Weckbecker, Klaus Huthmacher
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Publication number: 20100255336Abstract: A method and class of bond coat is provided herein that physically and chemically bonds solid layer lubricants and other functional coatings to a substrate by burnishing, for example, selected soft materials, including oxides such as antimony trioxide which is seen as a major improvement over conventional bonding or coating methods. The process is non-vacuum at ambient temperatures, no binders, adhesives, curing or baking. Lubricant performance can be enhanced by orders of magnitude compared to when the bond coat and burnishing process are not applied. The method is inexpensive, environmentally friendly, applicable to any substrate material, and scalable.Type: ApplicationFiled: March 31, 2009Publication date: October 7, 2010Inventor: Jeffrey S. Zabinski
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Publication number: 20100184592Abstract: The aim of the invention is to provide particles or coatings for splitting water, which are largely protected from corrosive damage. To this end, the particles or the coating consist(s) of a nucleus or a sub-layer and a shell or top layer, the nucleus or the sub-layer forming a reactive unit and consisting of a material which, on input of energy from sunlight, releases electrons capable of splitting water into hydrogen and oxygen, and the shell or top layer forming a protective unit capable of keeping the cleavage products away from the surface of the reactive unit and simultaneously having conductive fractions. Surprisingly, it has been found that corrosive damage to the reactive particles is (largely) prevented by the targeted separation of the reaction particles and the cleavage products over the kinetic range of the released electrons.Type: ApplicationFiled: June 13, 2008Publication date: July 22, 2010Applicant: NANO-X GmbHInventors: Stefan Sepeur, Gerald Frenzer, Peter W. Oliveira
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Patent number: 7732087Abstract: The catalyst for a fuel cell includes a carbon-based material, and Re-Ch supported on the carbon-based material, wherein Ch is selected from the group consisting of S, Se, Te, and combinations thereof. The cathode catalyst has high activity and selectivity for reduction of oxidant and is capable of improving performance of a membrane-electrode assembly and a fuel cell system.Type: GrantFiled: March 20, 2007Date of Patent: June 8, 2010Assignee: Samsung SDI Co., Ltd.Inventors: Alexey Alexandrovichserov, Chan Kwak, Si-Hyun Lee
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Publication number: 20100096618Abstract: A catalyst particle for use in growth of elongated nanostructures, such as e.g. nanowires, is provided. The catalyst particle comprises a catalyst compound for catalyzing growth of an elongated nanostructure comprising a nanostructure material without substantially dissolving in the nanostructure material and at least one dopant element for doping the elongated nanostructure during growth by substantially completely dissolving in the nanostructure material. A method for forming an elongated nanostructure, e.g. nanowire, on a substrate using the catalyst particle is also provided. The method allows controlling dopant concentration in the elongated nanostructures, e.g. nanowires, and allows elongated nanostructures with a low dopant concentration of lower than 1017 atoms/cm3 to be obtained.Type: ApplicationFiled: December 19, 2007Publication date: April 22, 2010Applicant: Interuniversitair Microelektronica Centrum (IMEC)Inventors: Francesca Iacopi, Philippe M. Vereecken
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Publication number: 20100094059Abstract: A method is described to prepare a Mo containing supported catalyst comprising TeO2 as active promoter and a process for preparing methanethiol in the presence of said catalyst.Type: ApplicationFiled: May 25, 2007Publication date: April 15, 2010Inventors: Yiquan Yang, Aiping Chen, Qi Wang, Jan-Olaf Barth, Christoph Weckbecker, Klaus Huthmacher
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Patent number: 7638458Abstract: Disclosed are a Mo—Bi—Nb—Te based composite metal oxide; and a process for producing (meth)acrylic acid from at least one reaction material selected from the group consisting of propylene, propane, isobutylene, t-butyl alcohol and methyl-t-butyl ether, wherein the Mo—Bi—Nb—Te based composite metal oxide is used as a catalyst. Also, disclosed is a process for producing (meth)acrylic acid comprising a first step of producing (meth)acrolein as a main product from at least one reaction material selected from the group consisting of propylene, propane, isobutylene, t-butyl alcohol and methyl-t-butyl ether, and a second step of producing (meth)acrylic acid from the (meth)acrolein, wherein yield of (meth)acrylic acid in the product of the first step is 20 mole % or higher.Type: GrantFiled: August 10, 2006Date of Patent: December 29, 2009Assignee: LG Chem, Ltd.Inventors: Hyun Jong Shin, Byung Yul Choi, Yeon Shick Yoo, Young Hyun Choe, Young Jin Cho, Duk Ki Kim, Kwang Ho Park, Joo Yeon Park
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Publication number: 20090275710Abstract: A method comprising contacting a support with a chromium-containing compound and a tin-containing compound to produce a catalyst precursor, and activating the catalyst precursor in a temperature range of from about 400° C. to about 700° C. to produce a polymerization catalyst. A method comprising contacting a support with a chromium-containing compound and a tin-containing compound to produce a catalyst precursor, activating the catalyst precursor in a temperature range of from about 400° C. to about 700° C. to produce a polymerization catalyst, and contacting the polymerization catalyst with ethylene in a reaction zone under suitable reaction conditions to form polyethylene wherein the molecular weight distribution of the polyethylene is broadened.Type: ApplicationFiled: April 30, 2008Publication date: November 5, 2009Inventors: Max P. McDaniel, Kathy S. Collins
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Patent number: 7576028Abstract: A catalyst body comprising a carrier and a catalyst layer containing an alkali metal and/or an alkaline earth metal, loaded on the carrier, which catalyst further contains a substance capable of reacting with the alkali metal and/or the alkaline earth metal, dominating over the reaction between the main components of the carrier and the alkali metal and/or the alkaline earth metal. With this catalyst body, the deterioration of the carrier by the alkali metal and/or the alkaline earth metal is prevented; therefore, the catalyst body can be used over a long period of time.Type: GrantFiled: December 14, 2000Date of Patent: August 18, 2009Assignee: NGK Insulators, Ltd.Inventors: Naomi Noda, Junichi Suzuki, Takashi Harada
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Publication number: 20090170694Abstract: A catalyst material is provided for treating products created during combustion which is developed for the catalytic conversion of carbon-containing particles, the catalyst material being applied onto a carrier and the catalyst material including cerium as one catalyst component. In order to provide a catalyst material, using which the catalytic conversion of carbon-containing particles is able to be improved, the catalyst components have at least one additional catalyst component besides cerium, the proportion of cerium amounting to at least 92 mol-% with respect to the entire quantity of the catalyst components. A method is also provided for preparing a catalyst material.Type: ApplicationFiled: January 3, 2007Publication date: July 2, 2009Inventors: Joerg Jockel, Nelson Ewane Olong, Kristina Pokorna
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Publication number: 20090075139Abstract: The present invention provides a catalytic system comprising a catalyst comprising nanoporous or mesoporous palladium and an ion-exchange electrolyte, processes for manufacturing the catalytic system and catalyst, and processes for oxidising or reducing organic and/or inorganic molecules using the catalyst or catalytic system.Type: ApplicationFiled: January 5, 2005Publication date: March 19, 2009Applicant: IC INNOVATIONS LIMITEDInventors: Anthony Kucernak, Junhua Jiang
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Patent number: 7485597Abstract: A method for improving the selectivity of a supported highly selective epoxidation catalyst comprising silver in a quantity of at most 0.17 g per m2 surface area of the support, which method comprises contacting the catalyst, or a precursor of the catalyst comprising the silver in cationic form, with a feed comprising oxygen at a catalyst temperature above 250° C. for a duration of up to 150 hours, and subsequently decreasing the catalyst temperature to a value of at most 250° C.; and a process for the epoxidation of an olefin, which process comprises contacting a supported highly selective epoxidation catalyst comprising silver in a quantity of at most 0.17 g per m2 surface area of the support, or a precursor of the catalyst comprising the silver in cationic form, with a feed comprising oxygen at a catalyst temperature above 250° C. for a duration of up to 150 hours, and subsequently decreasing the catalyst temperature to a value of at most 250° C.Type: GrantFiled: June 26, 2003Date of Patent: February 3, 2009Assignee: Shell Oil CompanyInventors: John Robert Lockemeyer, Randall Clayton Yeates, Donald Reinalda
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Publication number: 20090030230Abstract: The invention relates to mixed oxide catalysts for the catalytic gas-phase oxidation of olefins and methylated aromatics, processes for producing the catalysts and the reaction with air or oxygen in the presence of inert gases in various ratios at elevated temperatures and pressure to form aldehydes and carboxylic acids.Type: ApplicationFiled: September 15, 2006Publication date: January 29, 2009Inventors: Achim Fischer, Werner Burkhardt, Christoph Weckbecker, Klaus Huthmacher, Frank Wilz
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Publication number: 20090023952Abstract: Disclosed is a palladium-containing catalyst which enables to produce an ?,?-unsaturated carboxylic acid in high selectivity from an olefin or an ?,?-unsaturated aldehyde. Also disclosed are a method for producing such a catalyst and a method for producing an ?,?-unsaturated carboxylic acid using such a catalyst. Specifically disclosed is a palladium-containing catalyst containing 0.001 to 0.25 mole of antimony element to 1 mole of palladium element or a palladium-containing catalyst containing palladium element which composes a metal, tellurium element, and bismuth element.Type: ApplicationFiled: February 17, 2006Publication date: January 22, 2009Applicant: Mitsubishi Rayon co., Ltd.Inventors: Toshiya Yasukawa, Toshiki Matsui, Ken Ooyachi, Yoshiyuki Himeno, Wataru Ninomiya
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Publication number: 20090011311Abstract: The cathode catalyst for a fuel cell includes an RuSe alloy having an average particle size of less than or equal to 6 nm. The cathode catalyst may also include a metal carbide. The RuSe alloy is a highly active amorphous catalyst.Type: ApplicationFiled: December 14, 2007Publication date: January 8, 2009Applicant: Samsung SDI Co., Ltd.Inventors: Alexey Alexandrovichserov, Chan Kwak, Ho-Jin Kweon, Si-Hyun Lee
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Publication number: 20090005586Abstract: A catalyst composition comprising molybdenum, vanadium, and antimony, and at least one other element selected from the group consisting of praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium. Such catalyst compositions are effective for the gas-phase conversion of propane to acrylonitrile and isobutane to methacrylonitrile (via ammoxidation).Type: ApplicationFiled: June 29, 2007Publication date: January 1, 2009Inventors: James F. Brazdil, JR., Bruce I. Rosen, Eric Moore, Joseph P. Bartek, Claus Lugmair, Benjamin Mork
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Publication number: 20080318106Abstract: The cathode catalyst for a mixed reactant fuel cell includes a mixed catalyst that includes a first catalyst including a Ru—Ch1 compound where Ch1 is a chalcogens selected from the group consisting of S, Se, Te, and combinations thereof, and a second catalyst including a Pt—Ch2 compound where Ch2 is a chalcogens selected from the group consisting of S, Se, Te, and combinations thereof. The cathode catalyst can improve excellent power characteristics of a fuel cell due to excellent catalyst activity and selectivity.Type: ApplicationFiled: March 19, 2008Publication date: December 25, 2008Inventors: Chan Kwak, Alexey Alexandrovichserov, Geun-Seok Chai, Soon-Ki Kang
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Publication number: 20080242815Abstract: The invention provides a process which enables, in preparation of acrolein by catalytic gas-phase oxidation of propylene in the presence of molecular oxygen or a molecular oxygen-containing gas or in preparation of acrylic acid by catalytic gas-phase oxidation of acrolein in the presence of molecular oxygen or a molecular oxygen-containing gas, using single kind of atalyst, to suppress occurrence of localized extraordinarily high temperature spots (hot spots) in the catalyst layer and can stably maintain high acrolein or acrylic acid yield for a long time. The process is characterized by use of an oxide catalyst containing molybdenum as an essential component and having relative standard deviation of its particle size in a range of 0.02 to 0.20.Type: ApplicationFiled: March 28, 2008Publication date: October 2, 2008Inventor: Naohiro Fukumoto
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Patent number: 7419932Abstract: The method for preserving a catalyst of the present invention is characterized in that, in a process for continuously producing an objective product by a vapor phase oxidation reaction using a phosphorus-molybdenum-vanadium catalyst containing phosphorus, molybdenum and vanadium, the phosphorus-molybdenum-vanadium catalyst retained in a reactor is maintained under a condition of a water content of 30 mg or less per 1 g of catalyst dry weight, before the start of the reaction or during the stop of the reaction. By this, deterioration of the catalyst retained in the reactor can be simply prevented.Type: GrantFiled: January 9, 2004Date of Patent: September 2, 2008Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Yoshiyuki Taniguchi, Toru Kuroda, Hideyasu Takezawa, Yasuhiro Kabu
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Patent number: 7365041Abstract: An ammoxidation catalyst comprising a molybdenum (component (1)), bismuth (component (2)), at least one element selected from the group consisting of nickel, cobalt, zinc, magnesium, manganese and copper (component (3)) and at least one element selected from the group consisting of lanthanum, cerium, praseodymium and neodymium (component (4)), over which an organic compound is subject to ammoxidation which is a composite oxide fluid bed catalyst, is prepared by i) preparing a first solution that comprises at least a portion of component (1), at least a portion of component (2), and at least a portion of component (3) but none of component (4); ii) preparing a second solution by adding a solution of component (4) to the first solution; and iii) drying the second solution obtained and calcining the solid matter obtained from the drying step.Type: GrantFiled: September 25, 2002Date of Patent: April 29, 2008Assignee: Dia-Nitrix Co., Ltd.Inventors: Kenichi Miyaki, Motoo Yanagita, Kunio Mori
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Publication number: 20080064590Abstract: A method for producing a catalyst by contacting a mixed metal oxide catalyst with water, and optionally, an aqueous metal oxide precursor to produce a modified mixed metal oxide, and calcining the modified mixed metal oxide.Type: ApplicationFiled: August 20, 2007Publication date: March 13, 2008Inventors: Leonard Edward Bogan, Ruozhi Song
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Publication number: 20080050617Abstract: A carbon monoxide oxidizing catalyst for a reformer of a fuel cell system comprises: a compound including selenium oxide, tellurium oxide, bismuth oxide, or a combination thereof; copper oxide; and cesium oxide.Type: ApplicationFiled: May 22, 2007Publication date: February 28, 2008Applicant: Samsung SDI Co., LtdInventors: Leonid Gorobinskiy, Ju-Yong Kim, Jin-Kwang Kim, Dong-Myung Suh, Jin-Goo Ahn, Dong-Uk Lee, Sung-Chul Lee, Man-Seok Han, Chan-Ho Lee, Yong-Kul Lee
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Publication number: 20070275290Abstract: The cathode catalyst for a fuel cell of the present invention includes A-S—B, where A is selected from the group consisting of Ru, Rh, and combinations thereof, and B is selected from the group consisting of Se, Te, and combinations thereof.Type: ApplicationFiled: May 29, 2007Publication date: November 29, 2007Inventor: Alexey Alexandrovichserov
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Patent number: 7125820Abstract: Non-noble metal transition metal catalysts can replace platinum in the oxidation reduction reaction (ORR) used in electrochemical fuel cells. A RuxSe catalyst is prepared with comparable catalytic activity to platinum. An environmentally friendly aqueous synthetic pathway to this catalyst is also presented. Using the same aqueous methodology, ORR catalysts can be prepared where Ru is replaced by Mo, Fe, Co, Cr, Ni and/or W. Similarly Se can be replaced by S.Type: GrantFiled: July 29, 2003Date of Patent: October 24, 2006Assignee: Ballard Power Systems Inc.Inventor: Stephen A Campbell
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Patent number: 7071140Abstract: A catalyst comprising a complex of catalytic oxides comprising rubidium, cerium, chromium, iron, bismuth, molybdenum, and at least one of nickel or nickel and cobalt, optionally magnesium, and optionally one of phosphorus, antimony, tellurium, sodium, lithium, potassium, cesium, thallium, boron, germanium, tungsten calcium, wherein the relative ratios of these elements are represented by the following general formula: RbaCebCrcMgdAeFefBigYhMo12Ox wherein A is Ni or the combination of Ni and Co, Y is at least one of P, Sb, Te, Li, Na, K, Cs, Tl, B, Ge, W, Ca, Zn, a rare earth element, or mixtures thereof, a is about 0.01 to about 1, b is about 0.01 to about 3, c is about 0.01 to about 2, d is 0 to about 7, e is about 0.01 to about 10, f is about 0.01 to about 4, g is about 0.Type: GrantFiled: November 18, 2003Date of Patent: July 4, 2006Assignee: The Standard Oil CompanyInventors: Christos Paparizos, Stephen C. Jevne, Michael J. Seely
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Patent number: 6921831Abstract: Modified lead/bismuth/molybdate catalysts containing vanadium, copper, or gold have been prepared, and are selective to the corresponding furan compound from the gas phase oxidation of an unsaturated acyclic hydrocarbon such as butadiene.Type: GrantFiled: January 15, 2003Date of Patent: July 26, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: Kostantinos Kourtakis, Patrick Mills, Carl Z. Cao
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Patent number: 6825380Abstract: A catalyst comprising a promoted mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated nitrile.Type: GrantFiled: March 12, 2002Date of Patent: November 30, 2004Assignee: Rohm and Haas CompanyInventors: Sanjay Chaturvedi, Anne Mae Gaffney, Scott Han, Michele Doreen Heffner, Ruozhi Song
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Patent number: 6797840Abstract: A catalyst comprising an In promoted mixed metal oxide is useful for the vapor phase oxidation of an alkane, or a mixture of an alkane and an alkene, to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane, or a mixture of an alkane and an alkene, to an unsaturated nitrileType: GrantFiled: March 12, 2002Date of Patent: September 28, 2004Assignee: Rohm and Haas CompanyInventors: Sanjay Chaturvedi, Anne Mae Gaffney, Scott Han, Elsie Mae Vickery
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Patent number: 6790988Abstract: A catalyst comprising a promoted mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated nitrile.Type: GrantFiled: May 7, 2003Date of Patent: September 14, 2004Assignee: Rohm and Haas CompanyInventors: Sanjay Chaturvedi, Anne Mae Gaffney, Scott Han, Michele Doreen Heffner, Ruozhi Song
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Publication number: 20040096728Abstract: Non-noble metal transition metal catalysts can replace platinum in the oxidation reduction reaction (ORR) used in electrochemical fuel cells. A RuxSe catalyst is prepared with comparable catalytic activity to platinum. An environmentally friendly aqueous synthetic pathway to this catalyst is also presented. Using the same aqueous methodology, ORR catalysts can be prepared where Ru is replaced by Mo, Fe, Co, Cr, Ni and/or W. Similarly Se can be replaced by S.Type: ApplicationFiled: July 29, 2003Publication date: May 20, 2004Applicant: Ballard Power Systems Inc.Inventor: Stephen A. Campbell
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Patent number: 6734136Abstract: A catalyst comprising a promoted mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated nitrile.Type: GrantFiled: August 10, 2001Date of Patent: May 11, 2004Assignee: Rohm and Haas CompanyInventors: Sanjay Chaturvedi, Anne Mae Gaffney, Scott Han, Michele Doreen Heffner, Ruozhi Song
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Publication number: 20040034249Abstract: A catalyst suitable for the gas-phase oxidation of organic compounds to &agr;,&bgr;-unsaturated aldehydes and/or carboxylic acids and having an active phase comprising a multimetal oxide material is prepared by a process in which a particulate catalyst precursor which contains oxides and/or compounds of the elements other than oxygen which constitute the multimetal oxide material, which compounds can be converted into oxides, is prepared and said catalyst precursor is converted by calcination into a catalytically active form, wherein a stream of the particulate catalyst precursor is passed at substantially constant speed through at least one calcination zone at constant temperature for calcination.Type: ApplicationFiled: March 14, 2003Publication date: February 19, 2004Inventors: Heiko Arnold, Signe Unverricht, Raimund Felder, Klaus Harth, Klaus Joachim Muller-Engel
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Patent number: 6610629Abstract: Disclosed is a process for producing an oxide catalyst comprising, as component elements, molybdenum (Mo), vanadium (V), at least one element selected from the group consisting of the two elements of antimony (Sb) and tellurium (Te), and niobium (Nb), wherein the process comprises providing an aqueous raw material mixture containing compounds of the component elements of the oxide catalyst, and drying the aqueous raw material mixture, followed by calcination, and wherein, in the aqueous raw material mixture, at least a part of the niobium compound as one of the compounds of the component elements is present in the form of a complex thereof with a complexing agent comprising a compound having a hydroxyl group bonded to an oxygen atom or a carbon atom. Also disclosed is a process for producing (meth)acrylonitrile or (meth)acrylic acid, which comprises performing the ammoxidation or oxidation of propane or isobutane in the gaseous phase in the presence of the oxide catalyst.Type: GrantFiled: September 18, 2001Date of Patent: August 26, 2003Assignee: Asahi Kasei Kabushiki KaishaInventors: Hidenori Hinago, Hiroyuki Yano
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Publication number: 20030135064Abstract: A catalyst comprising a mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated nitrile. The catalyst is treated with a source of hydrogen, an alcohol, a source of NOx or a mixture thereof.Type: ApplicationFiled: October 17, 2002Publication date: July 17, 2003Inventors: Sanjay Chaturvedi, Anne Mae Gaffney, Dominique Hung Nhu Le
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Catalyst for use in catalytic oxidation or ammoxidation of propane or isobutane in the gaseous phase
Publication number: 20030088118Abstract: Disclosed is an oxide catalyst comprising an oxide represented by the formula Mo1VaNbbXcYdZeQfOn (wherein: X is at least one element selected from the group consisting of Te and Sb; Y is at least one element selected from the group consisting of Al and W; Z is at least one element selected from the group consisting of elements which individually form an oxide having a rutile structure and a Z oxide having a rutile structure is used as a source of Z for producing the catalyst; Q is at least one element selected from the group consisting of titanium, tin, germanium, lead, tantalum, ruthenium, rhenium, rhodium, iridium, platinum, chromium, manganese, technetium, osmium, iron, arsenic, cerium, cobalt, magnesium, nickel and zinc, and a Q compound not having a rutile structure is used as a source of Q for producing the catalyst; and a, b, c, d, e, f and n are, respectively, the atomic ratios of V, Nb, X, Y, Z, Q and O, relative to Mo).Type: ApplicationFiled: August 30, 2002Publication date: May 8, 2003Inventors: Satoru Komada, Hidenori Hinago, Osamu Nagano, Mamoru Watanabe -
Patent number: 6518216Abstract: A catalyst useful for the gas phase oxidation of alkanes to unsaturated aldehydes or carboxylic acids is disclosed. Processes for preparing the catalyst and using the catalyst to convert alkanes to unsaturated aldehydes or carboxylic acids are also disclosed.Type: GrantFiled: September 12, 2000Date of Patent: February 11, 2003Assignee: Rohm and Haas CompanyInventors: Scott Han, Dominique Hung Nhu Le, Nneka Namono McNeal
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Publication number: 20030004379Abstract: Hydrothermally synthesized catalysts comprising a mixed metal oxide are utilized to produce unsaturated carboxylic acids by the vapor phase oxidation of an alkane, or a mixture of an alkane and an alkene, in the presence thereof, or to produce unsaturated nitrites by the vapor phase oxidation of an alkane, or a mixture of an alkane and an alkene, and ammonia in the presence thereof.Type: ApplicationFiled: June 10, 2002Publication date: January 2, 2003Inventors: Anne Mae Gaffney, Ruozhi Song
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Publication number: 20020183198Abstract: A mixed metal oxide, which may be an orthorhombic phase material, is improved as a catalyst for the production of unsaturated carboxylic acids, or unsaturated nitrites, from alkanes, or mixtures of alkanes and alkenes, by: contacting with a liquid contact member selected from the group consisting of organic acids, alcohols, inorganic acids and hydrogen peroxide to form a contact mixture; recovering insoluble material from the contact mixture; calcining the recovered insoluble material in a non-oxidizing atmosphere; admixing the calcined recovered insoluble material with (i) at least one promoter element or compound thereof and (ii) at least one solvent for the at least one promoter element or compound thereof; removing the at least one solvent to form a catalyst precursor; and calcining the catalyst precursor.Type: ApplicationFiled: April 8, 2002Publication date: December 5, 2002Inventors: Anne Mae Gaffney, Michele Doreen Heffner, Ruozhi Song
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Publication number: 20020183199Abstract: A mixed metal oxide, which may be an orthorhombic phase material, is improved as a catalyst for the production of unsaturated carboxylic acids, or unsaturated nitrites, from alkanes, or mixtures of alkanes and alkenes, by contact with a liquid contacting member selected from the group consisting of organic acids, alcohols, inorganic acids and hydrogen peroxide.Type: ApplicationFiled: April 8, 2002Publication date: December 5, 2002Inventor: Leonard Edward Bogan
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Publication number: 20020183547Abstract: A catalyst comprising a mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated nitrile.Type: ApplicationFiled: April 4, 2002Publication date: December 5, 2002Inventors: Anne Mae Gaffney, Michele Doreen Haffner, Ruozhi Song
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Publication number: 20020169072Abstract: A novel olefin polymerization catalyst is provided which comprises (A) a transition metal compound or lanthanoid compound containing two or more atoms selected from the group consisting of boron, nitrogen, oxygen, phosphorus, sulfur, and selenium; and (B) a Lewis acid. A process for producing an olefin polymer is also provided. The catalyst has a high olefin polymerization activity without a combined use of an expensive organoaluminum oxy-compound or organoboron compound, and can maintain the high activity for a long polymerization time.Type: ApplicationFiled: February 21, 2002Publication date: November 14, 2002Inventors: Yasushi Nakayama, Hideyuki Kaneko, Hideki Bandoh, Yoshiho Sonobe, Junji Saito, Shinichi Kojoh, Makoto Mitani, Yasuhiko Suzuki, Shigekazu Matsui, Norio Kashiwa, Terunori Fujita
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Patent number: RE39074Abstract: The present invention relates to a process for the selective preparation of acetic acid from a gaseous feed comprising ethane, ethylene or mixtures thereof plus oxygen at elevated temperature, which comprises bringing the gaseous feed into contact with a catalyst comprising the elements Mo, Pd, X and Y in gram atom ratios a:b:c:d in combination with oxygen MoaPdbXcYd??(I) where the symbols X and Y have the following meanings: X is one or more elements selected from the group consisting of: Cr, Mn, Nb, Ta, Ti, V, Te and/or W, in particular Nb, V and W; Y is one or more elements selected from the group consisting of: B, Al, Ga, In, Pt, Zn, Cd, Bi, Ce, Co, Cu, Rh, Ir, Au, Ag, Fe, Ru, Os, K, Rb, Cs, Mg, Ca, Sr, Ba, Zr, Hf, Ni, P, Pb, Sb, Si, Sn, TI and U, in particular Ca, Sb, Te and Li. The present invention further provides a catalyst for the selective preparation of acetic acid comprising the elements Mo, Pd, X and Y in the gram atom ratios a:b:c:d in combination with oxygen.Type: GrantFiled: July 16, 1997Date of Patent: April 18, 2006Assignee: Celanese Chemicals Europe GmbHInventors: Holger Borchert, Uwe Dingerdissen