Of Group V (i.e., V, Nb, Ta, As, Sb Or Bi) Patents (Class 502/353)
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Patent number: 7304014Abstract: Modified metal oxide catalysts are disclosed which have different chemical, physical and catalytic properties, when used for catalytic conversions of carbon based compounds, as compared to corresponding unmodified metal oxide catalysts. Methods for preparing the modified catalysts are described and their utility in catalytic process is described. Alkenes, unsaturated saturated carboxylic acids, saturated carboxylic acids and their higher analogues are prepared directly from corresponding alkanes, alkenes or alkanes and alkenes utilizing using one or more modified metal oxide catalysts.Type: GrantFiled: March 3, 2005Date of Patent: December 4, 2007Assignee: Rohm and Haas CompanyInventors: Fernando Antonio Pessoa Cavalcanti, Sanjay Chaturvedi, Anne Mae Gaffney, Scott Han, Ruozhi Song, Elsie Mae Vickery
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Patent number: 7304013Abstract: Bulk and supported catalysts are prepared from an aqueous slurry containing a catalytically active material and a binder. The slurry is either coated onto a support and dried to form a porous, high surface area phase containing the catalytically active material, or reduced to a paste-like consistency, molded and dried to form a bulk catalyst. The processes and catalysts may be employed in various catalytic chemical processes to achieve high effectiveness factor of the catalytically active material while achieving a lower pressure drop.Type: GrantFiled: June 30, 2003Date of Patent: December 4, 2007Assignee: Corning IncorporatedInventors: William P. Addiego, Charles M. Sorensen, Jr.
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Publication number: 20070265159Abstract: The invention provides a method for depositing catalytic clusters on a surface, the method comprising confining the surface to a controlled atmosphere; contacting the surface with catalyst containing vapor for a first period of time; removing the vapor from the controlled atmosphere; and contacting the surface with a reducing agent for a second period of time so as to produce catalyst-containing nucleation sites.Type: ApplicationFiled: March 5, 2007Publication date: November 15, 2007Inventors: Jeffrey W. Elam, Michael J. Pellin, Peter C. Stair
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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: 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: 7186670Abstract: A process for the vapor phase ammoxidation of alkanes and olefins with a catalyst of the general empirical formula: VSbaMbQcOx wherein M is at least one element selected from magnesium, aluminum, zirconium, silicon, hafnium, titanium and niobium, Q is at least one element selected from rhenium, tungsten, molybdenum, tantalum, manganese, phosphorus, cerium, tin, boron, scandium, bismuth, gallium, indium, iron, chromium, lanthanum, yttrium, zinc, cobalt, nickel, cadmium, copper, strontium, barium, calcium, silver, potassium, sodium and cesium, a is 0.5 to 20, b is 2 to 50, c is 0 to 10 and x is determined by the valence requirements of the elements present. The process has a co-feed of gaseous carbon dioxide with an alkane (paraffin) and/or alkene, ammonia and an oxygen-containing gas which react in the presence of the catalyst to form a nitrile and by-products.Type: GrantFiled: September 30, 2004Date of Patent: March 6, 2007Assignee: Saudi Basic Industries CorporationInventors: Edouard A. Mamedov, Kathleen A. Bethke, Shahid N. Shaikh, Armando Araujo, Neeta K. Kulkarni
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Patent number: 7179442Abstract: A method and catalysts and fuel processing apparatus for producing a hydrogen-rich gas, such as a hydrogen-rich syngas are disclosed. According to the method a CO-containing gas, such as a syngas, contacts a water gas shift (“WGS”) catalyst, in the presence of water, preferably at a temperature of less than about 450° C. to produce a hydrogen-rich gas, such as a hydrogen-rich syngas. Also disclosed is a water gas shift catalyst formulated from: a) at least one of Rh, Ni, Pt, their oxides and mixtures thereof, b) at least one of Cu, Ag, Au, their oxides and mixtures thereof; and c) at least one of K, Cs, Sc, Y, Ti, Zr, V, Mo, Re, Fe, Ru, Co, Ir, Pd, Cd, In, Ge, Sn, Pb, Sb, Te, La, Ce, Pr, Nd, Sm, Eu, their oxides and mixtures thereof. Another disclosed catalyst formulation comprises Rh, its oxides or mixtures thereof, Pt, its oxides or mixtures thereof and Ag, its oxides or mixtures thereof.Type: GrantFiled: December 18, 2003Date of Patent: February 20, 2007Assignees: Honda Giken Kogyo Kabushiki Kaisha, Symyx Technologies, Inc.Inventors: Alfred Hagemeyer, Raymond E. Carhart, Karin Yaccato, Peter Strasser, Michael Herrmann, Robert K. Grasselli, Christopher James Brooks, Cory Bernard Phillips
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Patent number: 7129193Abstract: This invention aims at providing a catalyst body exhibiting a lower degradation of a catalyst due to thermal durability and capable of keeping higher catalyst performance for a long time. A catalyst component such as Pt is directly supported by Zr, W, etc, replacing elements inside a support such as Al of cordierite to provide a catalyst body without forming a coating layer. A combination of the catalyst component and the element inside the support is selected so that support strength is greater than 5 eV by simulation using a density functional method. Coarsening of catalyst particles can be suppressed and a high-performance catalyst body excellent in thermal durability can be obtained.Type: GrantFiled: February 12, 2003Date of Patent: October 31, 2006Assignee: Denso CorporationInventors: Miho Ito, Jun Hasegawa, Tosiharu Kondo, Tomohiko Nakanishi
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Patent number: 7125536Abstract: This invention relates to a composition comprising nano-structured metal oxide particles (particularly, zirconia) and at least one stabilizing agent, a method to produce the composition, and a method to produce the thermally stable nano-structured particles. The method to produce the nano-structured particles comprises first preparing a base solution and a nanoparticle precursor solution, then combining these solutions at a final pH 7 or greater to precipitate a colloidal hydrous oxide. The colloidal hydrous oxide is then treated with at least one silicate, phosphate, or aluminum phosphate stabilizing agent and dried. These nano-structured particle products have high thermal stability and are particularly advantageous in applications as catalysts or catalyst supports that operate at high temperatures.Type: GrantFiled: February 6, 2004Date of Patent: October 24, 2006Assignee: Millennium Inorganic Chemicals, Inc.Inventors: Guoyi Fu, BillieJo Monk, Corinne Lehaut
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Patent number: 7119044Abstract: An integrated multi-functional catalyst system includes a diesel particulate filter having an inlet side for receiving flow and an opposite outlet side, a substrate in the diesel particulate filter having an interior wall surface and an exterior wall surface, a first washcoat layer applied to the interior wall surface and adjacent the inlet side, and a second washcoat layer applied to the exterior wall surface and adjacent the outlet side, wherein flow distribution through the substrate is dispersed for minimizing back pressure. The diesel particulate filter may be one of a plurality of honeycomb cells.Type: GrantFiled: June 11, 2003Date of Patent: October 10, 2006Assignee: Delphi Technologies, Inc.Inventors: Ming Wei, Thomas R. Pauly, Jiyang Yan, Danan Dou
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Patent number: 7094728Abstract: Disclosed herein is a method of distributing a washcoat along channels of a particulate filter substrate, the method including: forcing a washcoat slurry a predetermined distance into the channels, the predetermined distance being less than or equal to the full length of the channels; clearing an excess amount of washcoat slurry from the channels; and arranging a remainder of the washcoat slurry within the channels, the arranging including applying a first vacuum to a first end of the particulate filter substrate after the clearing. In one embodiment the clearing includes applying a second vacuum to a second end of the particulate filter substrate. In another embodiment, the clearing includes pulling the excess washcoat slurry from the channels. The predetermined distance may be less than or equal to the full length of the channels.Type: GrantFiled: June 11, 2003Date of Patent: August 22, 2006Assignee: Delphi Technologies, Inc.Inventors: Jiyang Yan, Scott F. Reid, Ming Wei
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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: 7081433Abstract: Gold-titania (Au—TiO2) composite aerogels and ambigles were synthesized, characterized, and tested as ambient temperature catalysts for carbon monoxide. Adding alkanethiolate-monolayers-protected gold clusters (with ˜2 nm Au cores) directly to titania sol before gelation yields uniformly dispersed guests in the composite aerogel. The Au guests aggregate to 5 to 10 nm upon calcination to remove alkanethiolate and crystallize amorphous titania to anatase. The resulting composite aerogel exhibits high catalytic activity toward CO oxidation at room temperature at Au particle sizes that are essentially inactive in prior Au—TiO2 catalysts. Transmission electron microscopy illustrates the three-dimensional nature of the catalytic nanoarchitecture in which gold guests contact multiple anatase nanocrystallites.Type: GrantFiled: March 12, 2003Date of Patent: July 25, 2006Assignee: The United States of America as represented by the Secretary of the NavyInventors: Debra Rolison, Jeremy Pietron, Rhonda Stroud
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Patent number: 7078130Abstract: This invention provides novel stable metallic mesoporous transition metal oxide molecular sieves and methods for their production. The sieves have high electrical conductivity and may be used as solid electrolyte devices, e.g., in fuel cells, as sorbents, e.g. for hydrogen storage, and as catalysts. The invention also provides room temperature activation of dinitrogen, using the sieves as a catalyst, which permits ammonia production at room temperature.Type: GrantFiled: November 25, 2002Date of Patent: July 18, 2006Assignee: University of WindsorInventor: David M. Antonelli
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Patent number: 7067455Abstract: Catalysts and methods useful for the production of olefins from alkanes via oxidative dehydrogenation (ODH) comprise at least one base metal and copper with an optional promoter. The catalyst preferably comprises a base metal and a copper-modified Groups 8, 9, or 10 metal on a support comprising alumina, zirconia, or mixtures thereof. Copper is preferably present in an amount of from about 0.1 to about 1.0 percent by weight of the total catalyst weight. The base metal preferably comprises manganese, chromium, gold, their corresponding oxides, or combinations thereof. The optional promoter preferably comprises platinum, palladium, iridium, rhodium, ruthenium, or any combinations thereof.Type: GrantFiled: November 21, 2003Date of Patent: June 27, 2006Assignee: ConocoPhillips CompanyInventors: Zhen Chen, Steven R. McDonald, Shang Y. Chen, Stephan Basso, Charles R. Rapier, Angela R. Bailey-Rivers, Cemal Ercan
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Patent number: 7053021Abstract: There is provided a method of preparing carbon supported, ternary alloy composition core-shell PtVFe nanoparticles for use as fuel cell electrocatalysts. These catalysts have been found particularly useful for oxygen reduction reactions. The alloy nanoparticles can be assembled on carbon supports which then may undergo subsequent activation and/or calcination treatments. The method, combined with new synthetic feed and processing conditions, provides core-shell PtVFe alloy nanoparticles of 1–3 nm size. The catalyst-produced high monodispersity, controlled composition are highly dispersed, and have a uniform distribution. Finally, the correlation of the preparation and treatment parameters to the ORR catalytic activities of the prepared nanoparticles is described. The catalysts exhibit ORR in the range of 2 to 4 times more than a standard Pt/carbon catalyst.Type: GrantFiled: April 22, 2004Date of Patent: May 30, 2006Assignee: The Research Foundation of the State University of New YorkInventors: Chuan-Jian Zhong, Jin Luo, Mathew M. Maye, Li Han, Nancy N. Kariuki, Ting He
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Patent number: 7045482Abstract: The present invention relates to a method for preparing a heteropolyacid catalyst and method for preparing methacrylic acid using thereof. More particularly, the present invention relates to a method for preparing heteropolyacid catalyst, which is produced by the recrystallization of a heteropolyacid and/or its salt dissolved in a basic organic solvent and heat-treatment, and further to a method for preparing metachrylic acid using thereof, wherein the use of the heteropolyacid catalyst increases the activity of oxidation reaction induced by the modified electronic properties of heteropolyanions and provides high efficiency production of methacrylic acid from methacrolein, since the basic property of solvent inhibits peculiar acidic property of heteropolyacid.Type: GrantFiled: June 3, 2003Date of Patent: May 16, 2006Assignee: Korea Institute of Science and TechnologyInventors: Myung-Suk Chun, In Kyu Song, Suk Woo Nam
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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: 7022643Abstract: There is disclosed a production process for a catalyst which process makes it possible to efficiently carry out the supporting of a catalytic component onto a carrier and to obtain the catalyst excellent in quality and performance. This production process is a production process for the catalyst including a particulate lump carrier and a catalytic component supported thereon; with the production process comprising the step of carrying out simultaneous revolution and rocking of a treatment container 20 as charged with the carrier and a catalyst precursor including the catalytic component, thereby supporting the catalytic component onto the carrier.Type: GrantFiled: July 31, 2003Date of Patent: April 4, 2006Assignee: Nippon Shokubai Co., Ltd.Inventors: Hiromi Yunoki, Michio Tanimoto, Daisuke Nakamura
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Patent number: 7015172Abstract: A photo-catalyst comprising a compound having structure composing a network formed by mutual connection of an unit constructing oxygen octahedra or tetrahedra containing a transition metal ion or a typical metallic ion in d10 or d0 configuration and an unit constructing PO4 tetrahedron connected to said oxygen octahedra or tetrahedra, further containing an alkali metal besides said metallic ion as a consituent element, for example, AXNb2mP4O6m+8 (wherein A is Na, K or Li, X is 2, 3 or 4 and m is 3, 3.5 or 4) AXTa2mP4O6m+8 (wherein A is Na, K or Li, X is 2, 3 or 4 and m is 3, 3.5 or 4) AXIn2mP4O6m+8 (wherein A is Na, K or Li, X is 2, 3 or 4 and m is 3, 3.5 or 4) and RuO2 is loaded on the compound. The photo-catalyst can be used for the complete decomposition of water.Type: GrantFiled: June 12, 2002Date of Patent: March 21, 2006Assignee: Japan Science and Technology AgencyInventor: Yasunobu Inoue
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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: 6958309Abstract: A pretreatment method for increasing the average pore size of a catalyst support is disclosed which increases the diffusivity and effectiveness factor ?. The pretreatment method includes calcining the support in moisturized air at an elevated temperature sufficient to increase the average pore size. In some embodiments, the support may be treated with an acidic/basic solution prior to the calcination step. Alternatively, the calcination step may occur in a gas mixture including water/air/acidic (or basic) gases.Type: GrantFiled: August 1, 2002Date of Patent: October 25, 2005Assignee: ConocoPhillips CompanyInventors: Daxiang Wang, Tianyan Niu, Gloria I. Straguzzi, Harold A. Wright, Robin G. Cnossen
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Patent number: 6956005Abstract: An improved catalyst comprising a noble metal and tellurium at the surface of a carbon support is provided. Also provided are novel methods for preparing such catalysts and novel processes for the use of such catalysts in liquid phase oxidation reactions, particularly the oxidation of N-(phosphonomethyl)iminodiacetic acid or a salt thereof.Type: GrantFiled: June 30, 2003Date of Patent: October 18, 2005Assignee: Monsanto Technology LLCInventor: Mark A. Leiber
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Patent number: 6930072Abstract: A process and a catalyst reaction zone comprising one or more fixed bed reactors for oxidizing methanol in a reactant gas feed stream to formaldehyde. According to one embodiment, the process comprises introducing the reactant gas feed stream into an upstream region containing a vanadia-titania first catalyst (substantially free of a volatile MoO3 species) under oxidizing conditions to form a partially oxidized reactant gas feed stream which is then introduced under oxidizing conditions into a downstream region containing a metal molybdate second catalyst to further oxidize any residual methanol contained therein. According to another embodiment, a fixed bed reactor comprising an upstream region and a downstream region containing the aforementioned vanadia-titania and metal molybdate catalysts, respectively, is utilized to implement the inventive process to yield a product gas stream containing formaldehyde preferably at a conversion of 85% or more and a selectivity of 90% or more.Type: GrantFiled: March 12, 2003Date of Patent: August 16, 2005Assignee: Lehigh UniversityInventors: Israel E. Wachs, Ray P. Bourne
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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: 6916763Abstract: A process for preparing an antimonate-based mixed metal oxide catalyst in a catalytically active oxidized state, wherein the catalyst is represented by the empirical formula MeaSbbXcQdReOf, wherein Me, X, Q, R, a, b, c, d, e, and f are as defined herein, comprising (a) contacting an aqueous Sb2O3 slurry with HNO3 and one or more Me compounds, and, optionally, one or more compounds selected from X, Q, or R compounds to form a first mixture; (b) heating and drying the first mixture to form a solid product; and (c) calcining the solid product to form the catalyst, the catalysts prepared by the process, and the use of the catalysts in ammoxidation and oxidation processes. The catalysts of the invention are particularly useful for the production of acrylonitrile from propylene, ammonia, and an oxygen-containing gas.Type: GrantFiled: November 27, 2002Date of Patent: July 12, 2005Assignee: Solutia Inc.Inventor: Cathy L. Tway
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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: 6875724Abstract: A process and apparatus for oxidizing methanol in a gas stream into formaldehyde in a fixed bed reactor. The process first introduces a gas stream into a fixed bed reactor. The fixed bed reactor contains a catalyst bed having a depth, a width, a length, an inlet, an upstream region, a downstream region and an outlet. Preferably, the inlet, the upstream region, the downstream region and the outlet are provided in the order stated. A vanadia-titania catalyst is provided in the upstream region and a molybdena-titania catalyst is provided in the downstream region. The vanadia-titania catalyst in the upstream region is substantially free of MoO3 and initially (i.e., during oxidation some V2O5 may sublime and migrate to the downstream region) the molybdena-titania catalyst in the downstream region is substantially free of V2O5. Next, the gas stream is contacted with the vanadia-titania catalyst under oxidizing conditions.Type: GrantFiled: March 14, 2003Date of Patent: April 5, 2005Assignee: Lehigh UniversityInventor: Israel E. Wachs
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Patent number: 6867163Abstract: A molybdenum-based precipitate is prepared according to a process including the first step of forming a crude precipitate by pH adjustment to 6.5 or less in the presence of an alkali metal compound, and the second step of dissolving the crude precipitate in aqueous ammonia and forming a precipitate by pH adjustment to 6.5 or less. Then, the resulting molybdenum-based precipitate is washed with an acid aqueous solution having a pH of 6.5 or less and containing not less than 0.01 mole/L of ammonium root. Thus, a change in average particle diameter can be suppressed and good workability can be achieved, so that a molybdenum-based precipitate having a high purity and a desired average particle diameter can be obtained.Type: GrantFiled: May 10, 2001Date of Patent: March 15, 2005Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Hideyasu Takezawa, Toru Kuroda, Seiichi Kawato, Masanori Nitta
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Patent number: 6864212Abstract: Bismuth- and phosphorus-containing naphtha reforming catalysts, methods of making such catalysts, and a naphtha reforming process using such catalysts.Type: GrantFiled: August 8, 2002Date of Patent: March 8, 2005Assignee: Shell Oil CompanyInventor: Peter Tanev
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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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Patent number: 6822127Abstract: A selective hydrogenation catalyst for the seletive hydrogenation of unsaturated hydrocarbons, a process for preparing this catalyst and its use. The catalyst of the invention comprises a support, active component Pd, rare earth metals, and auxiliary metal Bi, Ag etc. The catalyst is able to hydrogenate high-unsaturated hydrocarbons such as alkyne with high selectivity at high space velocity while both green oil formation and carbon deposition on the catalyst are very low. It is applicable to an industrial cracking process.Type: GrantFiled: October 1, 2001Date of Patent: November 23, 2004Assignees: China Petroleum & Chemical Corporation, Beijing Research Institute of Chemical Industry, China Petroleum & Chemical CorporationInventors: Wei Dai, Jing Zhu, Hui Peng, Yanlai Guo, Wei Mu, Helong Li, Qingzhou Cui
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Patent number: 6797663Abstract: An exhaust gas clean-up catalyst having a catalytic layer which contains, as an occluding agent, at least one (potassium and/or the like) chosen from a group consisting of alkaline metals and alkaline earth metals. The catalytic layer consists of a first catalytic layer (20) which contains the occluding agent (potassium and/or the like) and an acid material (30) having a high affinity to the occluding agent, and a second catalytic layer (40) which contains the occluding agent and does not contain the acid material.Type: GrantFiled: October 25, 2002Date of Patent: September 28, 2004Assignee: Mitsubishi Jidosha Kogyo Kabushiki KaishaInventors: Tetsuya Watanabe, Osamu Nakayama, Keisuke Tashiro, Kinichi Iwachido, Hiroshi Tanada
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Publication number: 20040126267Abstract: The invention is directed to intermetallic compounds for use as catalysts for chemical reactions and catalytic systems. The structure of ordered intermetallic compounds enables such compounds to function as highly efficient catalysts. The ordered intermetallic compounds may be used to catalyze reactions in fuel cells (e.g., hydrogen fuel cells), amongst numerous other applications.Type: ApplicationFiled: July 29, 2003Publication date: July 1, 2004Inventors: Francis J. DiSalvo, Hector D. Abruna
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Publication number: 20040102319Abstract: 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: ApplicationFiled: November 27, 2002Publication date: May 27, 2004Inventor: James F. Brazdil
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Publication number: 20040102318Abstract: 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: November 27, 2002Publication date: May 27, 2004Inventors: James F. Brazdil, Fernando Antonio Pessoa Cavalcanti
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Patent number: 6740620Abstract: An orthorhombic phase mixed metal oxide is produced selectively in quantitative yield.Type: GrantFiled: April 8, 2002Date of Patent: May 25, 2004Assignee: Rohn 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: 6737545Abstract: Multimetal oxide materials containing molybdenum, vanadium, antimony, one or more of the elements W, Nb, Ta, Cr and Ce and 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 6, 2000Date of Patent: May 18, 2004Assignee: BASF AktiengesellschaftInventors: Hartmut Hibst, Signe Unverricht
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Patent number: 6733734Abstract: Regenerable gas purifier materials are provided capable of reducing the level of contaminants such as oxygen and moisture in a hydride gas stream to parts-per-billion levels or sub-parts-per-billion levels. The purifier materials of this invention comprise a thin layer of one or more reduced forms of a metal oxide coated on the surface of a nonreactive substrate. The thin layer may further contain the completely reduced form of the metal. In one embodiment, the total surface area of the thin layer is less than 100 m2/g.Type: GrantFiled: October 31, 2001Date of Patent: May 11, 2004Assignee: Matheson Tri-GasInventors: Tadaharu Watanabe, Dan Fraenkel
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Patent number: 6723228Abstract: An additive used in catalytic cracking of hydrocarbons, which is in the form of homogeneous liquid and comprises a composite metal compound, wherein said composite metal compound consists of the oxides, hydroxides, organic acid salts, inorganic acid salts or metal organic complex compounds of at least one of the 1st group metals and at least one of the 2nd group metals, wherein the 1st group metals are selected from the group consisting of the metals of the IIIA, IVA, VA, VIA groups of the Element Period Table, boron, silicon, phosphorous and tellurium; wherein the 2nd group metals are selected from the group consisting of alkali-earth metals, transition metals, and rare earth metals, is disclosed. A process of catalytic cracking of hydrocarbons, utilizing the additive is also disclosed. The additive can passivate metals and promote the oxidation of CO, and is operated easily with production cost decreased.Type: GrantFiled: June 11, 2003Date of Patent: April 20, 2004Assignees: China Petrochemical Corporation, Luoyang Petrochemical Engineering CorporationInventors: Shuqin Su, Guoliang Wang, Haiqing Guo, Xianliang Deng, Longyan Wang, Wenyi Qi, Shufang Liu, Baojian Shen, Jinlong Liu, Dongming Zhao
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Patent number: 6710011Abstract: A catalyst composition for the vapor phase ammoxidation of alkanes and olefins of the general empirical formulae: VSbaMbOx VSbaMbM′b′Ox VSbaMbQcOx VSbaMbQcQ′c′Ox wherein M and M′ are at least one element selected from magnesium, aluminum, zirconium, silicon, hafnium, titanium and niobium, M and M′ being different, Q and Q′ are at least one element selected from rhenium, tungsten, molybdenum, tantalum, manganese, phosphorus, cerium, tin, boron, scandium, bismuth, gallium, indium, iron, chromium, lanthanum, yttrium, zinc, cobalt, nickel, cadmium, copper, strontium, barium, calcium, silver, potassium, sodium and cesium, Q and Q′ being different, a is 0.5 to 20, b is 2 to 50, b′ is 0 to 50, c is 0 to 10, c′ is 0 to 10 and x is determined by the valence requirements of the elements present.Type: GrantFiled: December 21, 2001Date of Patent: March 23, 2004Assignee: Saudi Basic Industries CorporatioinInventors: Edouard A. Mamedov, Kathleen A. Bethke, Shahid N. Shaikh, Armando Araujo, Neeta K. Kulkarni, Andrei Khodakov
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Patent number: 6700000Abstract: Phthalic anhydride is prepared by catalytic gas-phase oxidation of xylene and/or naphthalene by a gas comprising molecular oxygen in a fixed bed at elevated temperature and using at least three coated catalysts arranged in superposed zones, which catalysts have a layer of catalytically active metal oxides applied to a core of support material.Type: GrantFiled: November 15, 2000Date of Patent: March 2, 2004Assignee: BASF AktiengesellschaftInventors: Thomas Heidemann, Herbert Wanjek
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Patent number: 6693059Abstract: A process useful for the catalytic gas phase oxidation of alkanes to unsaturated aldehydes or carboxylic acids uses catalysts of particular compositions formed in a particular manner.Type: GrantFiled: January 4, 2001Date of Patent: February 17, 2004Assignee: Rohm and Haas CompanyInventor: Manhua Lin
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Patent number: 6670300Abstract: A textured catalyst having a hydrothermally-stable support, a metal oxide and a catalyst component is described. Methods of conducting aqueous phase reactions that are catalyzed by a textured catalyst are also described. The invention also provides methods of making textured catalysts and methods of making chemical products using a textured catalyst.Type: GrantFiled: June 18, 2001Date of Patent: December 30, 2003Assignee: Battelle Memorial InstituteInventors: Todd Werpy, John G. Frye, Jr., Yong Wang, Alan H. Zacher
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Patent number: 6664207Abstract: A catalyst and process for converting carbon dioxide into oxygenates. The catalyst comprises copper, zinc, aluminum, gallium, and a solid acid.Type: GrantFiled: September 26, 2001Date of Patent: December 16, 2003Assignee: Conocophillips CompanyInventors: Jianhua Yao, James B. Kimble
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Publication number: 20030225293Abstract: The invention is a liquid-phase process for epoxidizing olefins with hydrogen peroxide in the presence of a non-zeolitic, supported niobium oxide catalyst comprising niobium oxide and a support. The process exhibits good productivity and selectivity for olefin epoxidation with hydrogen peroxide.Type: ApplicationFiled: June 3, 2002Publication date: December 4, 2003Inventor: Roger A. Grey
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Patent number: 6645907Abstract: A photocatalyst and a manufacturing method therefore, in which the adhesion to a support is increased and a baking step is simplified. The photocatalyst comprises the support and a metallic oxide layer provided on the support by applying and baking a colloidal solution including at least a metallic oxide precursor on the support, wherein the metallic oxide layer includes a high density metallic oxide layer of a less porous structure and a low density metallic oxide layer of a more porous structure.Type: GrantFiled: October 21, 2002Date of Patent: November 11, 2003Assignee: Yamaha CorporationInventor: Keiichi Muramatsu
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Patent number: 6638486Abstract: 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 5, 2001Date of Patent: October 28, 2003Assignee: Nippon Shokubai Co., Ltd.Inventors: Shinyuki Masaki, Ryoji Kuma, Noboru Sugishima