Vanadium Containing Patents (Class 502/312)
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Patent number: 7304180Abstract: The invention relates to a process for producing a metal oxide catalyst capable of producing acrylic acid, acrylonitrile or the like in one stage by catalytic oxidation reaction of propane in a high yield. The invention is characterized by using one obtained by finely ground metallic Te or metallic Sb in water or an organic solvent as a raw material for the production of an oxide catalyst made of metal elements Mo—V—Nb—Te or metal elements Mo—V—Nb—Sb. The powder of the metallic Te or metallic Sb obtained by grinding preferably has a mode size of not more than 20 ?m. By using the metal oxide obtained by the invention as a catalyst, it is possible to produce acrylic acid in a high yield of 35% or more from propane by a one-stage oxidation reaction.Type: GrantFiled: January 20, 2004Date of Patent: December 4, 2007Assignee: Toagosei Co., Ltd.Inventors: Xinlin Tu, Yuuichi Sumida, Mamoru Takahashi, Hiroshi Niizuma
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Patent number: 7288669Abstract: An improved catalyst comprising a mixed metal oxide, either promoted or not, 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 26, 2005Date of Patent: October 30, 2007Assignee: Rohm and Haas CompanyInventors: Anne Mae Gaffney, Michele Doreen Heffner, Ruozhi Song
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Patent number: 7285514Abstract: The present invention relates to a method for preparing a catalyst for partial oxidation of acrolein, particularly to a method for preparing a catalyst for partial oxidation of acrolein that has a superior acrolein conversion rate, acrylic acid activity, selectivity, and yield, by introducing a base solution and an acid solution into a catalyst suspension prepared by dissolving salts of metal ingredients of the catalyst in water to control the acidity of the catalyst suspension, contacting the catalyst suspension of which acidity is controlled with an inert support to support the catalyst thereon, and then drying and firing the supported catalyst.Type: GrantFiled: October 24, 2003Date of Patent: October 23, 2007Assignee: LG Chem, Ltd.Inventors: Jung-Hwa Kang, Won-Ho Lee, Min-Ho Kil, Hyun-Jong Shin, Byung-Yul Choi, Yeon-Shick Yoo, Young-Hyun Choe, Ju-Yeon Park
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Patent number: 7271126Abstract: A method for producing a catalyst for use in the dehydrogenation of ethylbenzene to styrene is disclosed. The catalyst of the present invention comprises a high purity metal and at least one promoter in the form of solid oxides, oxide hydrates, hydroxides, hydroxycarbonates or metals. The catalyst is prepared via a method which comprises the preparation of at least one high purity iron precursor with or without an additional support material and which uses a nominal amount of water in the catalyst production. The catalyst pellets prepared with the high purity metal precursor are essentially free of sulfur and chloride contaminants.Type: GrantFiled: June 24, 2004Date of Patent: September 18, 2007Assignee: Sud-Chemie Inc.Inventors: Dennis J. Smith, Robert J. O'Brien, X. D. Hu
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Patent number: 7256155Abstract: Provided are a flue gas denitration catalyst having high denitration activity and capable of suppressing a side reaction, that is, oxidation of SO2; and a preparation process of the catalyst. The flue gas denitration catalyst comprises TiO2, WO3 and V2O5. In the surface layer of the catalyst within 200 ?m from the surface thereof, V2O5 is supported on a carrier containing TiO2 and WO3. The supported amounts of V2O5 range from 0.4 to 5 wt. % based on the weight of the surface layer and range from 0.1 to 0.9 wt. % based on the total weight of the catalyst. The V2O5 thus supported has a crystallite size of less than 10 nm as measured by X-ray diffraction. The catalyst can be available by preparing a mixture containing TiO2 and WO3 and having V2O5 supported on the surface of an extruded product of the prepared mixture by a vapor phase method.Type: GrantFiled: November 10, 2003Date of Patent: August 14, 2007Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Shigeru Nojima, Kozo Iida, Yoshiaki Obayashi, Katsumi Nochi, Masashi Kiyosawa
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Patent number: 7250386Abstract: A quantum limit catalyst. The instant quantum limit catalyst is comprised of atomic aggregations whose dimensions correspond to the quantum limit. In the quantum limit, the atomic aggregations acquire structural configurations and electronic interactions not attainable in the macroscopic limit. The structural configurations possible in the quantum limit correspond to atomic aggregations having bond lengths, bond angles, topologies and coordination environments that differ from those found in the macroscopic limit. The electronic interactions possible in the quantum limit originate from wavefunction overlap and tunneling between atoms and lead to modifications in the magnitude and/or spatial distribution of electron density at catalytic sites to provide improved catalytic properties. Representative quantum limit catalysts include quantum scale atomic aggregations of metal atoms. Examples including catalysts derived from Fe, Mg, V and Co are disclosed.Type: GrantFiled: December 11, 2003Date of Patent: July 31, 2007Assignee: Energy Conversion Devices, Inc.Inventor: Stanford R. Ovshinsky
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Patent number: 7229945Abstract: The present invention is for a process for making a catalyst for production of unsaturated aldehydes, such as methacrolein, by gas phase catalytic oxidation of olefins, such as isobutylene, said catalyst containing oxides of molybdenum, bismuth, iron, cesium, tungsten, cobalt, nickel, antimony, magnesium and zinc. The process is a two-part synthesis of the catalyst with the water insoluble components in one part and the water soluble components in the other part. The water insoluble components are co-precipitated to form an intermediate catalyst precursor of a precipitated support incorporating oxides of the metal components. The intermediate catalyst precursor is filtered and washed to remove nitrates. The intermediate catalyst precursor is slurried with the remaining water soluble components. A final catalyst precursor is formed by removing the water and incorporating the water soluble components. This two-part process reduces the amount of nitrates in the final catalyst precursor.Type: GrantFiled: December 19, 2003Date of Patent: June 12, 2007Assignee: Saudi Basic Industrics CorporationInventor: James W. Kauffman
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Patent number: 7229946Abstract: A catalyst composition having the formula: Mo1VaSbbNbcMdOx wherein M is gallium, bismuth, silver or gold, a is 0.01 to 1, b is 0.01 to 1, c is 0.01 to 1, d is 0.01 to 1 and x is determined by the valence requirements of the other components. Other metals, such as tantalum, titanium, aluminum, zirconium, chromium, manganese, iron, ruthenium, cobalt, rhodium, nickel, platinum, boron, arsenic, lithium, sodium, potassium, rubidium, calcium, beryllium, magnesium, cerium, strontium, hafnium, phosphorus, europium, gadolinium, dysprosium, holmium, erbium, thulium, terbium, ytterbium, lutetium, lanthanum, scandium, palladium, praseodymium, neodymium, yttrium, thorium, tungsten, cesium, zinc, tin, germanium, silicon, lead, barium or thallium may also be components of the catalyst. This catalyst is prepared by co-precipitation of metal compounds which are calcined to form a mixed metal oxide catalyst that can be used for the selective conversion of an alkane to an unsaturated carboxylic acid in a one-step process.Type: GrantFiled: March 23, 2004Date of Patent: June 12, 2007Assignee: Saudi Basic Industries CorporationInventors: Paulette N. Hazin, Paul E. Ellis, Jr.
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Patent number: 7220698Abstract: There are provided a catalyst for catalytic gas phase oxidation of acrolein with molecular oxygen to produce acrylic acid, the catalyst including molybdenum and vanadium and further including at least one volatile catalyst poison ingredient in an amount of 10 to 100 ppb by mass as measured by ion chromatography; and a process for producing acrylic acid, including a step of carrying out catalytic gas phase oxidation of acrolein with molecular oxygen using the catalyst. The catalyst of the present invention can lower a hot spot temperature and suppress reduction in a reaction efficacy accompanied with thermal degradation, so that the acrolein conversion can stably be kept higher over a long term.Type: GrantFiled: February 9, 2005Date of Patent: May 22, 2007Assignee: Nippon Shokubai Co., Ltd.Inventors: Hiromi Yunoki, Michio Tanimoto
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Patent number: 7217680Abstract: A method for producing a composite oxide catalyst for gas phase catalytic oxidation of an unsaturated aldehyde with a molecular oxygen-containing gas to produce the corresponding unsaturated carboxylic acid in good yield, is presented. A method for producing a composite oxide catalyst, which is a method for producing a composite oxide catalyst having the following formula (I), characterized in that Sb2O3 of isometric system is used as at least a part of an antimony-supplying source compound: Mo12XaVbSbcCudSieCfOg ??(I) (wherein the respective components and variables have the following meanings: X is at least one element selected from the group consisting of Nb and W; a, b, c, d, e, f and g represent atomic ratios of the respective elements, and against 12 of molybdenum atom, 0<a?10, 0<b?10, 0<c?5, 0<d?5, 0?e?1,000, and 0?f?1,000, and g is a number determined by the degrees of oxidation of the above respective components.Type: GrantFiled: January 11, 2005Date of Patent: May 15, 2007Assignee: Mitsubishi Chemical CorporationInventors: Isao Teshigahara, Hisao Kinoshita
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Patent number: 7214822Abstract: A coated catalyst whose coating of active composition is a multimetal oxide comprising the elements Mo, V and Te and/or Sb can be used for the gas-phase catalytic oxidation of propane to acrylic acid.Type: GrantFiled: September 19, 2005Date of Patent: May 8, 2007Assignee: BASF AktiengesellschaftInventors: Frieder Borgmeier, Andreas Tenten, Hartmut Hibst
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Patent number: 7208445Abstract: An orthorhombic phase mixed metal oxide is produced selectively in quantitative yield.Type: GrantFiled: August 29, 2005Date of Patent: April 24, 2007Assignee: Rohm and Haas CompanyInventors: Leonard Edward Bogan, Jr., Daniel A. Bors, Fernando Antonio Pessoa Cavalcanti, Michael Bruce Clark, Jr., Anne Mae Gaffney, Scott Han
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Patent number: 7176159Abstract: A catalyst and sorbent is disclosed which comprises pellets with an absorbent core and a protective shell with a catalyst in the shell. Such material is especially well suited for steam reforming of hydrocarbons to produce hydrogen since a reforming catalyst can be incorporated in the shell and a sorbent for the by-product carbon dioxide can be used for the core. It is also well suited for producing hydrogen from carbon monoxide by means of the water gas shift reaction. The shell can be made sufficiently strong and durable for moving bed applications as well as fixed bed applications.Type: GrantFiled: August 14, 2002Date of Patent: February 13, 2007Assignee: Iowa State University Research Foundation, Inc.Inventors: Thomas D. Wheelock, Brent H. Shanks
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Patent number: 7138358Abstract: A catalyzed diesel particulate matter exhaust filter with improved diesel particulate matter oxidation activity and thermal stability including a porous filter substrate for filtering the diesel particulate matter washcoated with high surface area support alumina, titania, silica and zirconia promoted with one of ceria, lanthanum oxide, tungsten oxide, molybdem oxide, tin oxide for catalytic materials which includes an alkaline earth metal vanadate, and a precious metalType: GrantFiled: August 29, 2003Date of Patent: November 21, 2006Assignee: Sud-Chemie Inc.Inventors: Yinyan Huang, Zhongyuan Dang, Amiram Bar-llan
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Patent number: 7129195Abstract: The invention relates to a method for the heterogenically catalyed gas-phase partial oxidation of precursor compounds of (meth)acrylic acid in a fixed catalyst bed, containing as the catalyst an activated mass of mixed oxide, shaped to form a geometric body. Said geometric body is a geometric base body, into whose surface a cavity is incorporated.Type: GrantFiled: January 12, 2002Date of Patent: October 31, 2006Assignee: BASF AktiengesellschaftInventors: Raimund Felder, Signe Unverricht, Heiko Arnold, Jochen Petzoldt
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Patent number: 7109144Abstract: Disclosed is an oxide catalyst for use in catalytic oxidation or ammoxidation of propane or isobutane in the gaseous phase, which comprises a composition represented by the Mo1VaSbbNbcZdOn (wherein: Z is at least one element selected from the group consisting of tungsten, chromium, titanium, aluminum, tantalum, zirconium, hafnium, manganese, iron, ruthenium, cobalt, rhodium, nickel, palladium, platinum, zinc, boron, indium, germanium, tin, lead, bismuth, yttrium, gallium, rare earth elements and alkaline earth metals: and a, b, c, d, and n are, respectively, the atomic ratios of V, Sb, Nb, Z and O, relative to Mo), wherein 0.1?a<0.4, 0.1<b?0.4, 0.01?c?0.3, 0?d?1, with the proviso that a<b, and n is a number determined by and consistent with the valence requirements of the other elements present. Also disclosed is a process for producing an unsaturated carboxylic acid or an unsaturated nitrile by using the above-mentioned oxide catalyst.Type: GrantFiled: December 11, 2001Date of Patent: September 19, 2006Assignee: Asahi Kasei Kabushiki KaishaInventors: Hidenori Hinago, Mamoru Watanabe
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Patent number: 7091377Abstract: A multimetal oxide material contains the elements Mo, V and Te and/or Sb and at least one of the elements Nb, Ti, W, Ta and Ce and promoters and has a specific X-ray diffraction pattern. Moreover, such a multimetal oxide material is used as a catalyst for heterogeneously catalyzed gas-phase partial oxidations of hydrocarbons.Type: GrantFiled: October 15, 2003Date of Patent: August 15, 2006Assignee: BASF AktiengesellschaftInventors: Frieder Borgmeier, Martin Dieterle, Hartmut Hibst
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Patent number: 7053022Abstract: 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 nitriles by the vapor phase oxidation of an alkane, or a mixture of an alkane and an alkene, and ammonia in the presence thereof.Type: GrantFiled: September 30, 2003Date of Patent: May 30, 2006Assignee: Rohm and Haas CompanyInventors: Anne Mae Gaffney, Ruozhi Song
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Patent number: 7038082Abstract: A process for preparing a multimetal oxide material which contains the elements Mo, V and Te and/or Sb and at least one of the elements Nb, Ti, W, Ta and Ce and if desired promoters and has a specific X-ray diffraction pattern, in which process the last process step comprises washing with acidic liquids. In addition, a multimetal oxide material obtainable in such a way is used as a catalyst for heterogeneously catalyzed gas-phase partial oxidations and/or ammoxidation of hydrocarbons.Type: GrantFiled: August 26, 2003Date of Patent: May 2, 2006Assignee: BASF AktiengesellschaftInventors: Frieder Borgmeier, Klaus Joachim Müller-Engel, Hartmut Hibst, Martin Dieterle
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Patent number: 7033566Abstract: A photocatalyst including a metal oxide semiconductor represented by the formula: In1?xMxAO4 wherein M represents a transition metal element, A represents an element belonging to the Group 5a of the Periodic Table and x is a number greater than 0 but smaller than 1.Type: GrantFiled: July 9, 2002Date of Patent: April 25, 2006Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Hironori Arakawa, Zhigang Zou, Kazuhiro Sayama
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Patent number: 7030055Abstract: Compositions for reduction of gas phase reduced nitrogen species and NOx generated during a partial or incomplete combustion catalytic cracking process, preferably, a fluid catalytic cracking process, are disclosed. The compositions comprise (i) an acidic metal oxide containing substantially no zeolite, (ii) an alkali metal, alkaline earth metal, and mixtures thereof, (iii) an oxygen storage component, and (iv) a noble metal component, preferably rhodium or iridium, and mixtures thereof, are disclosed. Preferably, the compositions are used as separate additives particles circulated along with the circulating FCC catalyst inventory. Reduced emissions of gas phase reduced nitrogen species and NOx in an effluent off gas of a partial or incomplete combustion FCC regenerator provide for an overall NOx reduction as the effluent gas stream is passed from the FCC regenerator to a CO boiler, whereby as CO is oxidized to CO2 a lesser amount of the reduced nitrogen species is oxidized to NOx.Type: GrantFiled: May 3, 2004Date of Patent: April 18, 2006Assignee: W.R. Grace & Co.-Conn.Inventors: George Yaluris, John Allen Rudesill
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Patent number: 7018951Abstract: 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 nitriles, 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: GrantFiled: August 7, 2003Date of Patent: March 28, 2006Assignee: Rohm and Haas CompanyInventors: Anne Mae Gaffney, Michele Doreen Heffner, Ruozhi Song
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Patent number: 7005402Abstract: The invention is to provide (i) a catalyst which does not require an activation of catalyst components by means of a calcination which has become a hindrance in the way of obtaining a catalyst having a high activity through a conventional technology and in which catalyst the compositing of vanadium with molybdenum is contemplated more than enough; ii) a method for producing the catalyst; (iii) a catalyst having an activity, especially having an activity at low temperatures and a durability both greatly increased; (iv) a catalyst compound for purifying an exhaust gas, in which compound the ratio of vanadium atom to molybdenum atom (V/Mo) is 3/2 or close thereto and which compound is expressed by the rational formula (NH4)xMo2VxO(3x+6) wherein x is 2.8 to 3.2; and (v) a method for producing the catalyst compound through a step for reacting molybdenum oxide (MoO3) with ammonium metavanadate (NH4VO3) in the co-presence of water for a prescribed period of time.Type: GrantFiled: October 26, 2000Date of Patent: February 28, 2006Assignee: Babcock-Hitachi Kabushiki KaishaInventors: Yasuyoshi Kato, Kouichi Yokoyama, Masatoshi Fujisawa
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Patent number: 7005403Abstract: A coated catalyst whose coating of active composition is a multimetal oxide comprising the elements Mo, V and Te and/or Sb can be used for the gas-phase catalytic oxidation of propane to acrylic acid.Type: GrantFiled: October 16, 2001Date of Patent: February 28, 2006Assignee: BASF AktiengesellschaftInventors: Frieder Borgmeier, Andreas Tenten, Hartmut Hibst
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Patent number: 6989460Abstract: Unsaturated carboxylic acids are produced by the vapor phase catalytic oxidation of mixtures of alkenes and alkanes in the presence of a catalyst containing a mixed metal oxide. Similarly, unsaturated nitriles are produced by the vapor phase catalytic oxidation of alkenes or mixtures of alkenes and alkanes and ammonia in the presence of a catalyst containing a mixed metal oxide.Type: GrantFiled: November 25, 2003Date of Patent: January 24, 2006Assignee: Rohm and Haas CompanyInventors: Leonard Edward Bogan, Jr., Scott Han, Bradley Anson Jacobs, Frederick William Kaiser, Peter David Klugherz, Manhua Lin, Richard David Link, III, Michael William Linsen
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Patent number: 6989347Abstract: A catalyst composition for the production of carboxylic acids by the oxidation of the corresponding unsaturated aldehydes, and methods for making and using the catalyst compositions. The catalysts include compositions of the formula: MoaVbAlcXdYeOz wherein X is at least one element selected from W and Mn; Y is at least one element selected from Pd, Sb, Ca, P, Ga, Ge, Si, Mg, Nb, and K; a is 1; b is 0.01–0.9; c is 0<0.2; d is 0<0.5; e is 0<0.5; and z is an integer representing the number of oxygen atoms required to satisfy the valency of the remaining elements in the composition. Using the catalyst composition of the present invention, one may effectively oxidize the desired starting materials at relatively high levels of conversion, selectivity, and productivity, and with minimal side products.Type: GrantFiled: April 25, 2002Date of Patent: January 24, 2006Assignee: Saudi Basic Industries CorporationInventors: Khalid Karim, Yajnavalkya Subrai Bhat, Syed Irshad Zaheer, Asad Ahmad Khan
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Patent number: 6982343Abstract: 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: GrantFiled: October 17, 2002Date of Patent: January 3, 2006Assignee: Rohm and Haas CompanyInventors: Sanjay Chaturvedi, Anne Mae Gaffney, Dominique Hung Nhu Le
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Patent number: 6921836Abstract: Multimetal oxide materials containing molybdenum, vanadium, copper and antimony and one or more specific other metals and having a multicomponent structure are used for the gas-phase catalytic oxidative preparation of acrylic acid from acrolein.Type: GrantFiled: March 26, 1999Date of Patent: July 26, 2005Assignee: BASF AktiengesellschaftInventors: Hartmut Hibst, Signe Unverricht
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Patent number: 6919472Abstract: A catalyst composition for the selective conversion of an alkane to an unsaturated carboxylic acid having the general formula: MoVaNbbAgcMdOx wherein optional element M may be one or more selected from aluminum, copper, lithium, sodium, potassium, rubidium, cesium, gallium, phosphorus, iron, rhenium, cobalt, chromium, manganese, arsenic, indium, thallium, bismuth, germanium, tin, cerium or lanthanum; a is 0.05 to 0.99, b is 0.01 to 0.99, c is 0.01 to 0.99, d is 0 to 0.5 and x is determined by the valence requirements of the other components of the catalyst composition. This catalyst is prepared by co-precipitation of compounds of molybdenum, vanadium, niobium, silver and M to form a mixed metal oxide catalyst. This catalyst can be used for the selective conversion of an alkane to an unsaturated carboxylic acid in a one-step process or the ammoxidation of alkanes and olefins.Type: GrantFiled: December 20, 2002Date of Patent: July 19, 2005Assignee: Saudi Basic Industries CorporationInventors: Paulette N. Hazin, Paul E. Ellis, Jr.
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Patent number: 6919295Abstract: A supported catalyst comprising a mixed metal oxide is useful for the vapor phase catalytic partial 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: April 22, 2003Date of Patent: July 19, 2005Assignee: Rohm and Haas CompanyInventors: Anne Mae Gaffney, Scott Han, Michelle Doreen Heffner, Nneka Namono McNeal, Elsie Mae Vickery
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Patent number: 6916945Abstract: 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: GrantFiled: November 25, 2003Date of Patent: July 12, 2005Assignee: Rohm and Haas CompanyInventors: Anne Mae Gaffney, Michele Doreen Heffner, Ruozhi Song
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Patent number: 6903047Abstract: The present invention concerns a method for enhancing the activity of vanadium phosphorus oxide (VPO) catalysts. Promoter reagents are grafted onto or reacted with the catalyst surface. An optional calcination and activation heating cycle transforms the catalyst precursor into a final active phase. A preferred VPO catalyst produced has a ratio of molybdenum to vanadium on the surface of the catalyst to molybdenum to vanadium in the overall bulk of the catalyst represented by the equation (Mo/V) Surface?1.10 (Mo/V) overall bulk.Type: GrantFiled: January 16, 2001Date of Patent: June 7, 2005Assignee: E.I. du Pont de Nemours and CompanyInventors: Kostantinos Kourtakis, Pratibha Laxman Gai
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Patent number: 6887825Abstract: Vanadium antimony oxide catalysts useful for the selective oxidation and ammoxidation of paraffins, olefins, and aromatic compounds are manufactured in a process comprising (i) forming a catalyst precursor slurry comprising a vanadium containing compound and an antimony containing compound in a liquid solvent medium which comprises an organic solvent, and (ii) recovering a vanadium antimony oxide from the slurry by drying the slurry in order to remove water and organic solvent.Type: GrantFiled: November 27, 2002Date of Patent: May 3, 2005Assignee: The Standard Oil CompanyInventor: James F. Brazdil
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Patent number: 6884402Abstract: The present invention provides: a catalyst for purification of exhaust gases which catalyst is excellent as a denitrification catalyst which has still more excellent ability to remove nitrogen oxides and of which the ability to oxidize sulfur dioxide into sulfur trioxide is extremely suppressed and further as a catalyst which is favorable for efficiently removing organohalogen compounds, such as dioxins, from exhaust gases; a production process therefor; and a process for purification of exhaust gases. The catalyst for purification of exhaust gases comprises titanium oxide, molybdenum oxide, and vanadium oxide as catalytic components, wherein the titanium oxide and the molybdenum oxide are included in the catalyst in the form of: a binary closely mixed oxide which is beforehand prepared and includes titanium and molybdenum; and/or a trinary closely mixed oxide which is beforehand prepared and includes titanium, silicon, and molybdenum.Type: GrantFiled: March 18, 2003Date of Patent: April 26, 2005Assignee: Nippon Shokubai Co., Ltd.Inventors: Shinyuki Masaki, Ryoji Kuma, Noboru Sugishima
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Patent number: 6881390Abstract: Compositions for reduction of gas phase reduced nitrogen species and NOx generated during a partial or incomplete combustion catalytic cracking process, preferably, a fluid catalytic cracking process, are disclosed. The compositions comprise (i) an acidic metal oxide containing substantially no zeolite, (ii) an alkali metal, alkaline earth metal, and mixtures thereof, (iii) an oxygen storage component, and (iv) a noble metal component, preferably rhodium or iridium, and mixtures thereof, are disclosed. Preferably, the compositions are used as separate additives particles circulated along with the circulating FCC catalyst inventory. Reduced emissions of gas phase reduced nitrogen species and NOx in an effluent off gas of a partial or incomplete combustion FCC regenerator provide for an overall NOx reduction as the effluent gas stream is passed from the FCC regenerator to a CO boiler, whereby as CO is oxidized to CO2 a lesser amount of the reduced nitrogen species is oxidized to NOx.Type: GrantFiled: August 18, 2003Date of Patent: April 19, 2005Assignee: W. R. Grace & Co.-Conn.Inventors: George Yaluris, John Allen Rudesill
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Patent number: 6864384Abstract: A process for the manufacture of an improved iron promoted vanadium antimony oxide catalyst useful in the ammoxidation of propane to acrylonitrile wherein the source of iron (i.e. an iron containing compound such as Fe2O3) employed in the catalyst preparation has a BET surface area greater than 120 m2/gram. Such catalysts are useful in processes for the ammoxidation of a C3-C5 paraffinic hydrocarbon to its corresponding ?-?-unsaturated nitrile, the ammoxidation of propylene with NH3 and oxygen to acrylonitrile, the ammoxidation of methylpyridine with NH3 and oxygen to make cyanopyridine, the ammoxidation of m-xylene with NH3 and oxygen to make isophthalonitrile, and the oxidation of o-xylene to make phthalic anhydride.Type: GrantFiled: November 27, 2002Date of Patent: March 8, 2005Assignee: The Standard Oil CompanyInventors: James F. Brazdil, Joseph P. Bartek, Steven S. Trail
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Patent number: 6841699Abstract: 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 nitriles, from alkanes, or mixtures of alkanes and alkenes, by: contacting with a liquid contacting 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; and calcining the recovered insoluble material in a non-oxidizing atmosphere.Type: GrantFiled: April 8, 2002Date of Patent: January 11, 2005Assignee: Rohm and Haas CompanyInventors: Leonard Edward Bogan, Jr., Anne Mae Gaffney, Scott Han, Michele Doreen Heffner, Ruozhi Song
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Publication number: 20040249183Abstract: Catalytically active multielement oxide materials which contain at least one of the elements Nb and W and the elements Mo, V and Cu are prepared by a process in which an intimate dry blend containing ammonium ions is prepared and said dry blend is subjected to a thermal treatment in an atmosphere having a low molecular oxygen content at elevated temperatures, a portion of the ammonium ions contained in the intimate dry blend being decomposed with liberation of ammonia and the oxygen content of the thermal treatment atmosphere being increased in the course of the thermal treatment.Type: ApplicationFiled: May 7, 2004Publication date: December 9, 2004Applicant: BASF AktiengesellschaftInventors: Martin Dieterle, Hartmut Hibst, Wolfgang Jurgen Popel, Jochen Petzoldt, Klaus Joachim Muller-Engel
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Patent number: 6825145Abstract: The present invention provides an exhaust gas purifying catalyst that is capable of substantially reducing the degree of deterioration in an exhaust gas purifying capability, which results from dissipation of an absorbent agent. Accordingly, an exhaust gas purifying catalyst, which includes a carrier and a catalyst layer, and to which at least one material selected from a group of alkali metals and alkali earth metals is added as an absorbent agent, is characterized in that acid material with a high affinity with respect to the absorbent agent is mixed in the catalyst layer so as to fix the absorbent agent, and an inhibiting layer is formed between the catalyst layer and the carrier so as to inhibit the movement of the absorbent agent toward the carrier.Type: GrantFiled: June 2, 2003Date of Patent: November 30, 2004Assignee: Mitsubishi Jidosha Kogyo Kabushiki KaishaInventors: Hiroshi Tanada, Osamu Nakayama, Keisuke Tashiro, Kinichi Iwachido, Tetsuya Watanabe, Kazuo Koga
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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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Publication number: 20040229753Abstract: Multimetal oxide materials which contain Mo and V and, if required, one or more of the elements from the group consisting of lanthanides, transition elements of the Periodic Table of the Elements and elements of the third to sixth main group of the Periodic Table of the Elements and which are prepared in the presence of an alkali metal other than Li and have the i-phase structure are used as active material in catalysts for partial gas-phase oxidations.Type: ApplicationFiled: May 12, 2004Publication date: November 18, 2004Applicant: BASF AktiengesellschaftInventors: Hartmut Hibst, Gerhard Cox, Frieder Borgmeier
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Patent number: 6809219Abstract: 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: December 9, 2002Date of Patent: October 26, 2004Assignee: Rohm and Haas CompanyInventors: Scott Han, Dominique Hung Nhu Le, Nneka Namono McNeal
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Patent number: 6803340Abstract: A catalyst for removing dioxin and a preparation method thereof. The catalyst is prepared by recycling a spent catalyst discharged from a hydro-desulfurization process of an oil refinery in which the spent catalyst comprises an alumina support (preferably, gamma alumina) with a large specific surface area impregnated with high contents of vanadium. The spent catalyst is mixed with a tungsten-impregnated titania, whereby a catalyst comprising suitable metal components and a mixture support of alumina and titania may be prepared. The catalyst in accordance with the present invention has excellent dioxin removal performance and low preparation cost because of recycling the spent catalyst.Type: GrantFiled: December 5, 2001Date of Patent: October 12, 2004Assignee: SK CorporationInventors: Sang-Ho Lee, Jun-Seong Ahn, Jong-Hyun Kim, Bong-Jea Kim
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Publication number: 20040192966Abstract: A catalyst composition having the formula:Type: ApplicationFiled: March 23, 2004Publication date: September 30, 2004Applicant: Saudi Basic Industries CorporationInventors: Paulette N. Hazin, Paul E. Ellis
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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: 6797839Abstract: Multimetal oxide materials containing molybdenum, vanadium, antimony, one or more of the elements W, Nb, Ta, Cr and Ce and nickel and, if required, one or more of the elements Cu, Zn, Co, Fe, Cd, Mn, Mg, Ca, Sr and Ba and having a 2-component structure are used for the gas-phase catalytic oxidative preparation of acrylic acid.Type: GrantFiled: October 5, 2000Date of Patent: September 28, 2004Assignee: BASF AktiengesellschaftInventors: Hartmut Hibst, Signe Unverricht
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Patent number: 6794539Abstract: In a process for preparing a multiplephase multimetal oxide composition comprising Mo, V, Cu and, if desired, further elements, at least one phase is preformed separately and dispersed in a plastically deformable precursor composition of a further phase. The mixture is dried and calcined. The multimetal oxide composition is suitable as active composition of catalysts for the catalytically oxidation of organic compounds in the gas phase, in particular for the oxidation of acrolein to acrylic acid.Type: GrantFiled: March 17, 2003Date of Patent: September 21, 2004Assignee: BASF AktiengesellschaftInventors: Signe Unverricht, Raimund Felder, Heiko Arnold, Jochen Petzoldt
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Publication number: 20040181072Abstract: A process for the manufacture of an improved vanadium antimony oxide oxidation or ammoxidation catalyst which comprises heat treating the catalyst at a temperature above 780° C. in the presence of an oxygen enriched environment. Such catalysts are useful in processes for the ammoxidation of a C3-C5 paraffinic hydrocarbon to its corresponding &agr;-&bgr;-unsaturated nitrile, the ammoxidation of propylene with NH3 and oxygen to acrylonitrile, the ammoxidation of methylpyridine with NH3 and oxygen to make cyanopyridine, the ammoxidation of m-xylene with NH3 and oxygen to make isophthalonitrile, and the oxidation of o-xylene to make phthalic anhydride.Type: ApplicationFiled: March 5, 2004Publication date: September 16, 2004Inventors: James F. Brazdil, Fernando Antonio Pessoa Cavalcanti
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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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Patent number: 6790808Abstract: In an exhaust gas purifying catalyst, an acid material with a high affinity with respect to an absorbing agent is dispersed and mixed in a catalyst layer, to which the absorbing agent is added, or a layer of the acid material is formed inside the catalyst layer in order to prevent the absorbing agent from moving from the catalyst layer into the carrier. This reduces the permeation of the absorbing agent added to the catalyst layer into a carrier, the evaporation and splash of the absorbing agent from the catalyst, and the deterioration in the durability and the exhaust gas purifying performance of the catalyst.Type: GrantFiled: February 12, 2003Date of Patent: September 14, 2004Assignee: Mitsubishi Jidosha Kogyo Kabushiki KaishaInventors: Hiroshi Tanada, Osamu Nakayama, Keisuke Tashiro, Kinichi Iwachido, Tetsuya Watanabe