Of Vanadium Patents (Class 502/247)
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Patent number: 6413903Abstract: This invention relates to catalysts useful in the vapor phase oxidation of hydrocarbons, such as 1,3-butadiene to furan and maleic anhydride. The catalysts comprise vanadium oxides, vanadium phosphorus oxides or vanadium antimony oxides incorporated in a matrix comprising oxides or oxyhydroxides of silicon, titanium, tantalum and/or niobium derived using sol-gel chemistry, optionally in the presence of an organic directing agent, such as dodecylamine.Type: GrantFiled: February 28, 2001Date of Patent: July 2, 2002Assignee: E. I. du Pont de Nemours and CompanyInventor: Kostantinos Kourtakis
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Publication number: 20020038052Abstract: A process for preparing a catalyst is disclosed. The catalyst is useful for the gas phase oxidation of alkanes to unsaturated aldehydes or carboxylic acids or for the ammoxidation of alkanes to unsaturated nitrites.Type: ApplicationFiled: September 11, 2001Publication date: March 28, 2002Inventors: Leonard Edward Bogan,, Michele Doreen Heffner, Bradley Anson Jacobs, Richard David Link, III, Elsie Mae Vickery
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Patent number: 6362128Abstract: A method for manufacturing of an improved attrition resistant catalyst having an oxide-rich surface layer involving forming an aqueous slurry comprising; catalyst, catalyst precursor or catalyst support particles (e.g., vanadium/phosphorus oxide, V/P/O catalyst), a large particle colloidal oxide sol (e.g., 200 Å, 600 Å, 750 Å colloidal silica, sodium stabilized) as the major oxide-rich surface layer forming component, and a second oxide-rich surface layer forming component solution wherein the solute is selected from the group consisting essentially of a precursor of the oxide-rich surface with average particle size no greater than 5 nm (e.g., aqueous silicic acid or polysilicic acid), a colloidal oxide sol wherein oxide particles in the sol have an average size below 10 nm (e.g., 50 Å colloidal silica), and mixtures thereof and then spray drying the slurry to form porous microspheres of attrition resistant catalyst; and, calcining/activating the spray dried microspheres.Type: GrantFiled: November 19, 1999Date of Patent: March 26, 2002Assignee: E. I. du Pont de Nemours and CompanyInventor: Jo-Ann Theresa Schwartz
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Patent number: 6342191Abstract: This invention relates to a process for producing an enhanced adsorbent particle comprising contacting a non-amorphous, non-ceramic, crystalline, porous, calcined, aluminum oxide particle that was produced by calcining at a particle temperature of from 300° C. to 700° C., with an acid for a sufficient time to increase the adsorbent properties of the particle. A process for producing an enhanced adsorbent particle comprising contacting a non-ceramic, porous, oxide adsorbent particle with an acid for a sufficient time to increase the adsorbent properties of the particle is also disclosed. Particles made by the process of the instant invention and particle uses, such as remediation of waste streams, are also provided. The invention also relates to a method for producing an adsorbent and/or catalyst and binder system. The invention also relates to particles made by the process, binders, and methods for remediating contaminants in a stream.Type: GrantFiled: December 10, 1998Date of Patent: January 29, 2002Assignee: Apyron Technologies, Inc.Inventors: Bryan E. Kepner, Eric A. Mintz
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Publication number: 20010025119Abstract: A material useful as catalyst for the hydrogenation of alpha, omega-dinitriles comprisesType: ApplicationFiled: May 8, 2001Publication date: September 27, 2001Inventors: Guido Voit, Rolf Fischer, Peter Bassler, Andreas Ansmann, Hermann Luyken, Martin Merger, Frank Ohlbach, Alwin Rehfinger
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Patent number: 6242379Abstract: A catalyst for the production of alkenylaromatics from alkylaromatics, wherein the catalyst is predominantly iron oxide, an alkali metal compound and a small amount of a source for palladium or platinum. Additional components of the catalyst may include compounds based on cerium, molybdenum, tungsten and other such promoters. Also a process for the production of alkenylaromatics from alkylaromatics using this catalyst.Type: GrantFiled: April 1, 1998Date of Patent: June 5, 2001Assignee: United Catalysts Inc.Inventors: David Williams, Yuji Mishima, Andrzej Rokicki, Kazuhiko Shinyama, Dennis J. Smith
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Patent number: 6191065Abstract: A catalyst for the production of alkenylaromatics from alkylaromatics, wherein the catalyst is predominantly iron oxide, an alkali metal compound and less than about 100 ppm of a source for a noble metal, such as palladium, platinum, ruthenium, rhenium, osmium, rhodium or iridium. Additional components of the catalyst may include compounds based on cerium, molybdenum, tungsten and other such promoters. Also a process for the production of alkenylaromatics from alkylaromatics using this catalyst.Type: GrantFiled: January 26, 1999Date of Patent: February 20, 2001Assignees: Nissan Girdler Catalysts Company, United Catalysts Inc.Inventors: David Williams, Yuji Mishima, Andrzej Rokicki, Kazuhiko Shinyama, Dennis Smith
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Patent number: 6184173Abstract: Multimetal oxides containing Mo, V and at least one of the elements W, Nb, Ti, Zr, Hf, Ta, Cr, Si and Ge and having a special three-dimensional atomic arrangement are used in catalysts for the catalytic gas-phase oxidation of organic compounds.Type: GrantFiled: January 27, 2000Date of Patent: February 6, 2001Assignee: BASF AktiengesellschaftInventors: Hartmut Hibst, Andreas Tenten, Laszlo Marosi
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Catalysts for low temperature selective oxidation of propylene, methods of making and using the same
Patent number: 6143928Abstract: A mixed metal oxide catalytic system consisting of molybdenum, vanadium, palladium, lanthanum, niobium and X, wherein X is copper and/or chromium, providing higher yields of acrylic acid and acrolein in the low temperature oxidation of propylene with a molecular oxygen-containing gas without the production of side products such as CO.Type: GrantFiled: August 10, 1998Date of Patent: November 7, 2000Assignee: Saudi Basic Industries CorporationInventors: Khalid Karim, Yajnavalkya Subrai Bhat, Syed Irshad Zaheer, Abdullah Bin Nafisa -
Patent number: 6121187Abstract: The present invention relates to amorphous microporous mixed oxides, characterized by having, in dried form, a narrow pore size distribution (half width <.+-.10% of the pore diameter) of micropores with diameters in the range of <3 nm and a total surface area of between 20 and 1000 m.sup.2 /g, containing a fraction of from 0.1 to 20% by weight of non-hydrolyzable organic groups, and to a process for the preparation of such oxides.Type: GrantFiled: October 26, 1998Date of Patent: September 19, 2000Assignee: Studiengesellschaft Kohle mbHInventor: Wilhelm F. Maier
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Patent number: 6114278Abstract: A mixed metal oxide Mo-V-Ga-Pd-Nb-X (where X=La, Te, Ge, Zn, Si, In or W) catalytic system providing a higher selectivity to acrylic acid in the low temperature partial oxidation of propane with a molecular oxygen-containing gas.Type: GrantFiled: November 16, 1998Date of Patent: September 5, 2000Assignee: Saudi Basic Industries CorporationInventors: Khalid Karim, Yajnavalkya Subrai Bhat, Syed Irshad Zaheer, Abdullah Bin Nafisah
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Patent number: 6107238Abstract: A method for manufacturing of an improved attrition resistant catalyst having an oxide-rich surface layer involving forming a slurry comprising; catalyst, catalyst precursor or catalyst support particles (e.g., transition metal oxides), a colloidal oxide sol (e.g., colloidal silica), and a solution of a solvent and solute wherein the solute consist essentially of a precursor of said oxide-rich surface with particle size no greater than 5 nm (e.g., aqueous silicic acid or polysilicic acid) and then spray drying the slurry to form porous microspheres of attrition resistant catalyst; and, calcining the spray dried microspheres. Such a catalyst is particularly useful in oxidation processes wherein the oxidation is performed by an oxidized form of the catalyst and the resulting reduced form of the catalyst is separately regenerated (e.g., two-step vapor phase processes carried out in recirculating solids reactors, transport bed reactors or circulating fluidized bed reactors and the like).Type: GrantFiled: September 30, 1998Date of Patent: August 22, 2000Assignee: E. I. du Pont de Nemours and CompanyInventors: Rashmikant Maganlal Contractor, William Joseph Letts
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Patent number: 6060415Abstract: The present invention provides a molecular sieve composite membrane, which includes an anodic alumina membrane as a support and the uni-directionally oriented molecular sieve membrane grown in situ on the anodic alumina membrane. The close packing transitional metal containing aluminophosphate AFI molecular sieve crystals have successfully been grown on the anodic alumina. The molecular sieve phase bounded strongly and anchored into the anodic alumina membrane. Besides, the specific cylindrical channels of the anodic alumina membrane provides the template function to orient the growth of molecular sieves.Type: GrantFiled: February 10, 1997Date of Patent: May 9, 2000Assignee: National Science CouncilInventors: Kuei-Jung Chao, Chih-Ning Wu, Han-Chang Shih, Tzeng-Guang Tsai
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Patent number: 6060421Abstract: A mixed metal oxide MoVLaPdNbXO catalytic system (wherein X=Al, Ga, Ge and/or Si) providing higher selectivity and space time yield of acetic acid at low pressure and low temperature in a single stage oxidation of ethane with a molecular oxygen-containing gas and steam.Type: GrantFiled: December 23, 1998Date of Patent: May 9, 2000Assignee: Saudi Basic Industries CorporationInventors: Khalid Karim, Mohammad Al-Hazmi, Asah Khan
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Patent number: 6025298Abstract: The present invention provides a denitration catalyst which is designed to show a drop of the mechanical strength of the carrier to an acceptable extent even when used with an exhaust gas containing sulfur oxides while making the use of excellent water resistance or electrical insulating properties inherent to glass fibers and a process therefor. The denitration catalyst comprises a catalytically active component supported on a structure comprising a glass fiber free of B.sub.2 O.sub.3, an inorganic filler and an inorganic binder.Type: GrantFiled: February 3, 1999Date of Patent: February 15, 2000Assignees: Nichias Corporation, Mitsubishi Heavy Industries, Ltd.Inventors: Kiyoaki Imoto, Jun Tanabe, Osamu Naito, Atsushi Morii, Shuya Nagayama
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Patent number: 5972833Abstract: A method of preparing a catalyst having the elements and the proportions indicated by the following empirical formula:VSb.sub.m A.sub.a D.sub.d O.sub.xwhereA is one or more Ti, Sn, where Sn is always presentD is one or more Li, Mg, Ca, Sr, Ba, Co, Fe, Cr, Ga, Ni, Zn, Ge, Nb, Zr, Mo, W, Cu, Te, Ta, Se, Bi, Ce, In, As, B, Al and Mn whereinm is 0.5 to 10a is greater than zero to 10d is zero to 10x is determined by the oxidation state of the cations present,comprising making an aqueous slurry of a mixture of source batch materials comprising compounds of said elements to be included in the final catalyst, followed by drying and heat calcining the mixture to an active catalyst, wherein the source batch material for the tin is a solution which comprises SnO.sub.2.xH.sub.2 O wherein x.gtoreq.0 dispersed in tetraalkyl ammonium hydroxide wherein the tetraalkyl ammonium hydroxide is defined by the following formula:C.sub.n H.sub.2n+1 NOHwherein 5.gtoreq.n.gtoreq.Type: GrantFiled: November 9, 1998Date of Patent: October 26, 1999Assignee: The Standard Oil CompanyInventors: James Frank Brazdil, Jr., Joseph Peter Bartek
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Patent number: 5948726Abstract: The invention relates to a method for producing an adsorbent and/or catalyst and binder system comprising I) mixing components comprising (a) a binder comprising a colloidal metal oxide or colloidal metalloid oxide, (b) an oxide adsorbent and/or catalyst particle, and (c) an acid, (ii) removing a sufficient amount of water from the mixture to cross-link components a and b to form an adsorbent and/or catalyst and binder system. The invention also relates to particles made by the process, binders, and methods for remediating contaminants in a stream.Type: GrantFiled: October 21, 1996Date of Patent: September 7, 1999Assignee: Project Earth Industries, Inc.Inventors: Mark L. Moskovitz, Bryan E. Kepner
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Patent number: 5932746Abstract: Readily processible cluster compositions of vanadium and phosphorus are precursors to vanadium-phosphorus catalysts including vanadyl pyrophosphate and vanadylbis(metaphosphate).Type: GrantFiled: April 28, 1997Date of Patent: August 3, 1999Assignee: E. I. du Pont de Nemours and CompanyInventors: Norman Herron, David Lincoln Thorn
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Patent number: 5863855Abstract: This invention relates to a catalyst for removal of nitrogen oxides in an exhaust gas by adding ammonia to the exhaust gas and hydrogenating catalytically wherein said catalyst is in a two-layered structure comprising a lower layer which is a molded article consisting of components having denitration activity covered with an upper layer which has a abrasion resistance lower than that of the lower layer and which is a coating of particulate components having 2 peaks in its particle size distribution within the range from 0.1 to 50 .mu.m.Type: GrantFiled: July 26, 1996Date of Patent: January 26, 1999Assignee: Mitsubishi Jukogyo Kabushiki KaishaInventors: Shigeru Nojima, Kozo Iida
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Patent number: 5854172Abstract: A method of preparing a catalyst having the elements and the proportions indicated by the following empirical formula:VSb.sub.m A.sub.a D.sub.d O.sub.xwhereA is one or more Ti, Sn, where Sn is always presentD is one or more Li, Mg, Ca, Sr, Ba, Co, Fe, Cr, Ga, Ni, Zn, Ge, Nb, Zr, Mo, W, Cu, Te, Ta, Se, Bi, Ce, In, As, B, Al and Mn whereinm is 0.5 to 10a is greater than zero to 10d is zero to 10x is determined by the oxidation state of the cations present,comprising making an aqueous slurry of a mixture of source batch materials comprising compounds of said elements to be included in the final catalyst, followed by drying and heat calcining the mixture to an active catalyst, wherein the source batch material for the tin is a solution which comprises SnO.sub.2.xH.sub.2 O wherein x.gtoreq.0 dispersed in tetraalkyl ammonium hydroxide wherein the tetraalkyl ammonium hydroxide is defined by the following formula:C.sub.n H.sub.2n+1 NOHwherein5.gtoreq.n.gtoreq.Type: GrantFiled: January 17, 1997Date of Patent: December 29, 1998Assignee: The Standard Oil CompanyInventors: James Frank Brazdil, Jr., Joseph Peter Bartek
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Patent number: 5851947Abstract: Aerogels or xerogels containing atomically dispersed noble metals for applications such environmental remediation. New noble metal precursors, such as Pt--Si or Pd(Si--P).sub.2, have been created to bridge the incompatibility between noble metals and oxygen, followed by their incorporation into the aerogel or xerogel through sol-gel chemistry and processing. Applications include oxidation of hydrocarbons and reduction of nitrogen oxide species, complete oxidation of volatile organic carbon species, oxidative membranes for photocatalysis and partial oxidation for synthetic applications.Type: GrantFiled: December 16, 1996Date of Patent: December 22, 1998Assignee: The Regents of the University of CaliforniaInventors: Lucy M. Hair, Robert D. Sanner, Paul R. Coronado
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Patent number: 5846507Abstract: This invention relates to a catalyst for ammonia synthesis. The main phase of the catalyst is a non-stoichiometric ferrous oxide expressed as Fe.sub.1-x O, which is structurally in a Wustite crystal phase form having the rock salt face-centered cubic lattice with lattice paracueter of 0.427-0.433 nm. This catalyst, which has quick reduction rate and high activity, and remarkably lowers the reaction temperature, is especially applicable as an ideal low-temperature, low-pressure ammonia synthesis catalsyt and can be widely used in ammonia synthesis industry.Type: GrantFiled: July 2, 1996Date of Patent: December 8, 1998Assignee: Zhejiang University of TechnologyInventors: Huazhang Liu, Ruyu Xu, Zurong Jiang, Zhangneng Hu, Yanying Li, Xiaonian Li
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Patent number: 5733836Abstract: A composition comprises at least one inorganic oxide and an oxygen-containing metal compound selected from the group consisting of a metal hydroxide, a metal oxide, and combinations of any two or more thereof. The composition can be optionally supported on a support such as an alumina. A process for producing mercaptans comprises contacting an alcohol with hydrogen sulfide in the presence of the composition under a condition sufficient to produce a mercaptan.Type: GrantFiled: March 22, 1996Date of Patent: March 31, 1998Assignee: Phillips Petroleum CompanyInventors: Dean E. Stinn, Harold J. Swindell, Donald H. Kubicek, Marvin M. Johnson
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Patent number: 5658844Abstract: A method of producing cyanopyridines by means of the catalytic reaction of methylpyridines with ammonia and oxygen at elevated temperature using catalysts consisting of compounds of the elements antimony, vanadium, silicon, titanium and oxygen and compounds of one or more of the alkali metals as well as a method of producing the catalysts and the catalysts themselves.Type: GrantFiled: February 1, 1996Date of Patent: August 19, 1997Assignee: Degussa AktiengesellschaftInventors: Lukas V. Hippel, Armin Neher, Dietrich Arntz
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Patent number: 5620938Abstract: The invention relates to a catalyst for the epoxidation of alkenes using alkylhydroperoxide, the catalyst comprising an ion of one or more of the metals molybdenum, wolfram, titanium or vanadium on an inorganic carrier, characterised in that the metal ion is bound to the carrier via a polydentate organic ligand.The invention also relates to a process for the preparation of an alkene oxide by an alkene having 3 or more carbon atoms with an alkylhydroperoxide, using the catalyst described above.Type: GrantFiled: February 17, 1995Date of Patent: April 15, 1997Assignee: DSM N.V.Inventor: Otto E. Sielcken
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Patent number: 5604173Abstract: Particular mixed vanadium/other metal catalysts, well suited for the desulfurization of gaseous effluents containing contaminating amounts of objectionable sulfur compounds, typically via the Claus reaction and notably in the presence of oxygen, comprise a support substrate, e.g., titanium dioxide, having an active catalytic phase deposited thereon, such active catalytic phase being constituted of an electroneutral solid solution having the average composition:A.sub.4.+-.y V.sub.2.+-.x O.sub.9in which A is a metal other than vanadium, e.g., magnesium, calcium or zinc, 0.ltoreq.x.ltoreq.0.2 and 0.ltoreq.y.ltoreq.0.5.Type: GrantFiled: June 5, 1995Date of Patent: February 18, 1997Assignees: Institut De Catalyse Du Department Siberien De L'Academie Des Sciences De Russie, VniigazInventors: Roman A. Bouyanov, Albert M. Tsyboulesky, Boris P. Zolotovsky, Dimitri P. Klevtsov, Vladimir L. Mourine
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Patent number: 5446004Abstract: Multimetal oxide compositions which comprise, as basic constituents, the elements Mo, V, W, Cu and Ni in oxidic form in certain molar ratios, and the preparation of these multimetal oxide compositions, and their use as catalysts for the gas-phase catalytical oxidation of acrolein to acrylic acid.Type: GrantFiled: January 28, 1994Date of Patent: August 29, 1995Assignee: BASF AktiengesellschaftInventors: Andreas Tenten, Peter Weidlich
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Patent number: 5434118Abstract: A catalytically active gel product is described consisting of a silica matrix which is amorphous to x-rays with uniform porosity, monomodal pore distribution and high surface area, within which one or more metal oxides possessing catalytic activity are dispersed. A process for preparing this catalytic gel is also described.Type: GrantFiled: October 12, 1993Date of Patent: July 18, 1995Assignees: Eniricerche S.p.A., Snamprogetti SpAInventors: Angela Carati, Enrico Davini, Mario G. Clerici, Giuseppe Bellussi
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Patent number: 5391530Abstract: The present invention relates to a process for the production of a catalyst for the removal of nitrogen oxides from waste gases, in which the end of the catalyst on the gas-inlet side is coated with a compound selected from the group consisting of biphosphates, condensed phosphates, silicates, borates and mixtures thereof, and is subjected to thermal aftertreatment, where the end of the green element on the gas-inlet side is immersed into an aqueous preparation comprising biphosphates and/or condensed phosphates and/or silicates and/or borates, and the green element is subsequently calcined at temperatures of from 300.degree. to 700.degree. C.Type: GrantFiled: July 20, 1993Date of Patent: February 21, 1995Assignee: Huels Aktiengesellschaft - PB15Inventors: Bernd Nowitzki, Jurgen Jung, Helmut Kretschmer
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Patent number: 5380692Abstract: A catalyst for catalytic reduction of nitrogen oxide using at least one reducing agent selected from the group consisting of a hydrocarbon and an oxygen-containing organic compound is described, which includes an oxide represented by formula (V):A.sup.5.sub.x B.sup.3.sub.3-x C.sup.4.sub.3 O.sub.7 (V)wherein A.sup.5 represents at least one element selected from the group consisting of La, Y, Ce, Pr, Nd, Sm, Eu, and Gd; B.sup.3 represents at least one element selected from the group consisting of Ba, Sr, Ca, Mg, Pb, Zn, and Ag; C.sup.4 represents at least one element selected from the group consisting of Mn, Co, Fe, Ni, Cr, Cu, V, Mo, W, Ti, Zr, Nb, Pd, Rh, Ru, and Pt; and x is a number of from 0 to 1, supported on a solid acid carrier.Type: GrantFiled: September 11, 1992Date of Patent: January 10, 1995Assignees: Sakai Chemical Industry Co., Ltd., Agency of Industrial Science and Technology, Petroleum Energy Center, Cosmo Oil Co., Ltd.Inventors: Tadao Nakatsuji, Hiromitsu Shimizu, Ritsu Yasukawa, Fujio Suganuma, Akihiro Kitazume, Hiroshi Tsuchida, Takehiko Ito, Hideaki Hamada, Katsumi Miyamoto, Masaaki Kawatsuki, Yoshiaki Kintaichi, Motoi Sasaki, Mitsunori Tabata
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Patent number: 5371056Abstract: An oxidative diesel control catalyst is disclosed which has a high conversion rate for hydrocarbons and carbon monoxide and an inhibited oxidation effect on nitrogen oxides and sulfur dioxides and which contains a monolithic catalyst element with throughflow passages of ceramic or metal coated with an activity-promoting dispersion coating of the fine-particle metal oxides aluminum oxide, titanium oxide, silicon oxide, zeolite or mixtures thereof as support of the catalytically active components, the active components being present in the form of platinum, palladium, rhodium and/or iridium doped with vanadium or in contact with an oxidic vanadium compound. The reduced oxidation effect on sulfur dioxide is obtained by virtue of the fact that the fine-particle metal oxides are surface-modified aluminum oxide, titanium oxide, silicon oxide, zeolite or mixtures thereof.Type: GrantFiled: April 20, 1993Date of Patent: December 6, 1994Assignee: Degussa AktiengesellschaftInventors: Juergen Leyrer, Egbert Lox, Bernd Engler, Rainer Domesle
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Patent number: 5369076Abstract: Particular mixed vanadium/other metal catalysts, well suited for the desulfurization of gaseous effluents containing contaminating amounts of objectionable sulfur compounds, typically via the Claus reaction and notably in the presence of oxygen, comprise a support substrate, e.g., titanium dioxide, having an active catalytic phase deposited thereon, such active catalytic phase being constituted of an electroneutral solid solution having the average composition:A.sub.4.+-.y V.sub.2.+-.x O.sub.9in which A is a metal other than vanadium, e.g., magnesium, calcium or zinc, 0.ltoreq.x.ltoreq.0.2 and 0.ltoreq.y.ltoreq.0.5.Type: GrantFiled: June 17, 1992Date of Patent: November 29, 1994Assignee: Institut de Catalyse du Department Siberien de l'Academie des Sciences de Russie and Vniigaz (Institut de recherches de gas naturels)Inventors: Roman A. Bouyanov, Albert M. Tsyboulesky, Boris P. Zolotovsky, Dimitri P. Klevtsov, Vladimir I. Mourine
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Patent number: 5348987Abstract: NOx removal catalyst can be obtained by kneading various kinds of inorganic fibers and water containing a surfactant to make a pulp-like substance, adding a catalytic component thereto and then further kneading the resultant mixture to prepare a catalyst paste. The thus obtained catalyst paste is shaped into a honeycomb-like, plate-like or column-like form according conventional various molding methods, and then dried and calcined for use. Instead of the above catalytic components; catalytic carriers such as titanium, zeolite, zirconia and the like may be shaped and calcined in the same manner and used for carrying a catalytic component. A particularly high performance and strength can be obtained with good result when a composition produced by calcining a molybdenum (Mo), vanadium (V) or tungsten (W) compound born on titanium oxide at 400.degree. to 700.degree. C. is used.Type: GrantFiled: January 12, 1993Date of Patent: September 20, 1994Assignee: Babcock-Hitachi Kabushiki KaishaInventors: Yasuyoshi Kato, Kunihiko Konishi
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Patent number: 5296428Abstract: There is provided a catalyst comprising MCM-36 and a hydrogenation/dehydrogenation component. A particular example of such a catalyst comprises MCM-36, nickel and tungsten.Type: GrantFiled: August 12, 1992Date of Patent: March 22, 1994Assignee: Mobil Oil Corp.Inventors: Thomas F. Degnan, Kathleen M. Keville, Charles T. Kresge, David O. Marler, Brenda H. Rose, Wieslaw J. Roth, Kenneth G. Simons, deceased, Hye K. C. Timken, James C. Vartuli
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Patent number: 5294584Abstract: A process for producing a denitration catalyst comprising the following steps of immersing a base material composed of an inorganic fiber cloth in an aqueous slurry containing 5 to 20% by weight of at least one sol-form substance selected from the group consisting of silica sol, titania sol and zirconia sol, as a first component, 20 to 70% by weight of at least one inorganic oxide fine powder selected from the group consisting of those of titania, zirconia and cordierite, as a second component, and 1 to 3% by weight of at least one organic binder selected from the group consisting of polyvinyl alcohol, polyvinyl acetate and carboxymethyl cellulose, as a third component, removing superfluous liquid from the resulting base material, drying the base material, coating catalyst components onto the surface of the dried base material, and drying and calcining the resulting material, are proposed.Type: GrantFiled: October 2, 1991Date of Patent: March 15, 1994Assignee: Babcock-Hitachi Kabushiki KaishaInventors: Naomi Yoshida, Hitoshi Yamasaki, Ikuhisa Hamada, Yasuyoshi Kato, Kunihiko Konishi, Toshiaki Matsuda, Yuji Fukuda
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Patent number: 5283043Abstract: There is provided a method for preparing organic-swelled layered silicate by direct crystallization from an alkaline reaction mixture containing a source of silicon oxide and organic onium compound, e.g., a cetyltrimethylammonium salt. Layered silicates containing interlayer polymeric chalcogenide are prepared by contacting the organic-swelled layered silicate with a source of polymeric chalcogenide, e.g., tetraethylorthosilicate.Type: GrantFiled: April 16, 1992Date of Patent: February 1, 1994Assignee: Mobil Oil Corp.Inventors: Ivy D. Johnson, Michael E. Landis
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Patent number: 5231066Abstract: A bimodal silica gel particle, its method of preparation and its use as a catalyst support in the polymerization of olefins is disclosed. The bimodal silica gel particle exhibits a bimodal pore radius distribution, wherein the silica gel particle has a first average pore radius and a second average pore radius differing by at least about 20 .ANG.. The bimodal silica gel particle is useful as a support for a transition metal-based catalyst to provide a polyolefin having a broad or bimodal molecular weight distribution.Type: GrantFiled: September 11, 1991Date of Patent: July 27, 1993Assignee: Quantum Chemical CorporationInventors: Louis J. Rekers, Roger D. Laib
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Patent number: 5175136Abstract: Chemically and thermally stable monolithic catalysts are disclosed having platinum or alkali metal-vanadium active phases for use in the conversion of sulfur dioxide to sulfur trioxide. The platinum catalyst comprises a foraminous ceramic support which has at its wall surfaces a high surface area substrate for an active catalyst phase, and a combination of a platinum active phase and a promoter on the substrate. The substrate preferably comprises silica, provided, for example, by application of a silica washcoat. The promoter is selected from among compounds of zirconium, hafnium and titanium.The alkali-vanadium catalyst comprises a foraminous ceramic support having a porous silica substrate for the active phase at its foraminal wall surfaces. An alkali metal-vanadium active catalyst is in the pores of the porous silica.Type: GrantFiled: November 19, 1990Date of Patent: December 29, 1992Assignee: Monsanto CompanyInventor: Timothy R. Felthouse
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Patent number: 5157007Abstract: An open-cell, monolithic catalyst for the purification of diesel-engine exhaust gas with a coating of finely divided inorganic oxides containing vanadium and platinum group metal as active components. The active components of the oxidic coating are added as water-soluble precursors which are then converted by means of tempering, preferably in an atmosphere of hydrogen, into the active component.Type: GrantFiled: March 11, 1991Date of Patent: October 20, 1992Assignee: Degussa AGInventors: Rainer Domesle, Bernd Engler, Edgar Koberstein, Herbert Voelker
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Patent number: 5155083Abstract: A catalyst for reducing nitrogen oxides in the exhaust gas with ammonia, having a catalyst composition coated on an inorganic fiber cloth as a substrate is provided. The inorganic fiber cloth is impregnated with at least one inorganic oxide selected from silica and said catalyst composition, preferably with an organic binder like polyvinyl alcohol, so that the weight ratio of the inorganic oxide/said inorganic fiber cloth is in the range of 0.05 to 0.8 and the inorganic oxide is substantially placed between the fibers constituting said inorganic fiber cloth.The above inorganic fiber cloth is preferably a glass fiber cloth, more preferably a glass fiber cloth which surface is acid-treated to have a layer deficient in alumina and calcium oxide.Type: GrantFiled: May 18, 1990Date of Patent: October 13, 1992Assignee: Babcock-Hitachi Kabushiki KaishaInventors: Naomi Yoshida, Hitoshi Yamasaki, Ikuhisa Hamada, Yasuyoshi Kato, Kunihiko Konishi, Toshiaki Matsuda, Yuji Fukuda
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Patent number: 5139988Abstract: A composition which contains as essential components: crystalline iron antimonate and at least one element selected from the group consisting of vanadium, molybdenum, and tungsten; is useful as a catalyst in the oxidation reaction of organic compounds. Also, a process for producing the composition is disclosed.Type: GrantFiled: September 17, 1991Date of Patent: August 18, 1992Assignee: Nitto Chemical Industry Co., Ltd.Inventors: Yutaka Sasaki, Hiroshi Utsumi, Kenichi Miyaki
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Patent number: 5128302Abstract: Process of manufacture, and method of use of a carrier-supported catalyst with transition metal phthalocyanines for the oxidizing treatment of exhaust gases which gases contain volatile compounds containing oxygen and/or nitrogen, which catalyst can be obtained by charging a carrier with at least one transition metal phthalocyanine and activation of the charged carrier with (i) a gas mixture which contains nitrogen oxide and/or oxygen, at temperatures between room temperature and 500.degree. C., or with (ii) a solution which contains nitric acid and/or an oxidation agent.Type: GrantFiled: May 22, 1990Date of Patent: July 7, 1992Assignee: Friedrich SteinbachInventors: Friedrich Steinbach, Reinhild Ellmers-Kutzinski, Andreas Brunner, Holger Muller
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Patent number: 5108976Abstract: A high-density and mean-porosity catalyst, supported on a siliceous matrix, based on vanadium, iron, oxygen and alkali metals, wherein the V.sub.2 O.sub.5 content ranges from 6 to 9% by weight, the Me.sub.2 O content ranges from 8.5 to 12% by weight (Me being an alkali metal), the particle density ranges from 1.10 to 1.40 g/cm.sup.3 and furthermore:the pore volume ranges from 0.20 to 0.70 cm.sup.3 /g and the surface area ranges from 0.30 to 5 m.sup.2 /g, the average radius of the pores ranging from 600 to 2200 nanometers;the SiO.sub.2 content is lower than 75% by weight and the Fe.sub.2 O.sub.3 content is higher than 0.90% by weight.Type: GrantFiled: October 1, 1990Date of Patent: April 28, 1992Assignee: Ausimont S.r.l.Inventors: Luigi Cavalli, Renzo Nardini
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Patent number: 5106811Abstract: The present invention pertains to novel vanadium spinel materials and a method for their preparation. Each vanadium spinel material has a trivalent vanadium cation and is crystallized from a liquid having a composition that falls within a specific polygon shaped area in a ternary composition diagram of V.sub.2 O.sub.3 -FeO-SiO.sub.2 as shown in the drawing herein e.g., FIG. 1. The compositions may be used as a catalyst for oxidation reactions.Type: GrantFiled: October 1, 1990Date of Patent: April 21, 1992Assignee: Texaco Inc.Inventors: Arnulf Muan, Mitri S. Najjar
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Patent number: 5094992Abstract: The present invention pertains to novel vanadium spinel materials and a method for their preparation. Each vanadium spinel material has a trivalent vanadium cation and is crystallized from a liquid having a composition that falls within a specific polygon shaped area in a ternary composition diagram of V.sub.2 O.sub.3 -MgO-SiO.sub.2 as shown in the drawing herein e.g., FIG. 1. The compositions may be used as a catalyst for oxidation reactions.Type: GrantFiled: October 1, 1990Date of Patent: March 10, 1992Assignee: Texaco Inc.Inventors: Mitri S. Najjar, Arnulf Muan
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Patent number: 5091354Abstract: Site-specific, framework substituted heteropolyacid or a polyoxoanion catalysts useful in alkane oxidation processes.Type: GrantFiled: July 11, 1990Date of Patent: February 25, 1992Assignee: Sun Refining and Marketing CompanyInventors: Paul E. Ellis, Jr., James E. Lyons
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Patent number: 5086029Abstract: The present invention pertains to novel vanadium spinel materials and a method for their preparation. Each vanadium spinel material has a trivalent vanadium cation and is crystallized from a liquid having a composition that falls within a specific polygon shaped area in a ternary composition diagram of V.sub.2 O.sub.3 --MnO--SiO.sub.2 as shown in the drawing herein e.g., FIG. 1. The compositions may be used as a catalyst for oxidation reactions.Type: GrantFiled: November 19, 1990Date of Patent: February 4, 1992Assignee: Texaco Inc.Inventors: Arnulf Muan, Mitri S. Najjar
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Patent number: 5064792Abstract: The invention relates to a catalyst for the reduction of nitrogen oxides and comprises oxides of transition metals on a particulate carrier material, the catalyst comprising:1) a carrier material consisting of small grains of an inorganic oxide,2) a catalytic layer thereon containing TiO.sub.2 and V.sub.2 O.sub.5, and obtained by a separate or simultaneous coating of the components on the carrier material,the catalyst particles being in the order of 10-200 .mu.m and the catalyst being intended to operate at temperatures of 150.degree.-220.degree. C.The invention also relates to a method for the preparation of the catalyst, and the use thereof for the reduction of nitrogen oxides in gases at low temperatures.Type: GrantFiled: February 26, 1990Date of Patent: November 12, 1991Assignee: Eka Nobel ABInventors: Sven G. Jaras, Marek T. Tokarz, Borje Persson
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Patent number: 5039646Abstract: A solid composition is prepared by mixing water, a hydraulic cement, sodium silicate, and a catalyst composition comprising (a) an inorganic support, (b) Pt and/or Pd metal and (c) Fe metal and/or oxide, followed by maintaining the obtained mixture under such conditions as to affect hardening of the hydraulic cement. Preferably, the hydraulic cement is a Type III portland cement and/or a Class H well cement. A solid composition comprising hydraulic cement, sodium silicate and the above-described catalyst composition is provided. This solid composition can be used as a CO oxidation catalyst.Type: GrantFiled: July 12, 1990Date of Patent: August 13, 1991Assignee: Phillips Petroleum CompanyInventor: David J. Elliott
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Patent number: 5039645Abstract: A solid composition is prepared by mixing water, a hydraulic cement, aluminum metal powder, and a catalyst composition comprising (a) an inorganic support, (b) Pt and/or Pd metal (c) and Fe metal and/or oxide, followed by maintaining the obtained mixture under such conditions as to affect hardening of the hydraulic cement. Preferably, the hydraulic cement is a Type III portland cement and/or a Class H well cement. The thus-prepared solid compositon can be used as a CO oxidation catalyst.Type: GrantFiled: July 12, 1990Date of Patent: August 13, 1991Assignee: Phillips Petroleum CompanyInventors: David J. Elliott, Patricia A. Tooley