Copper Containing Patents (Class 502/318)
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Patent number: 6331503Abstract: The method of the present invention involves the in situ formation of metal-molybdate catalyst particles active for methanol oxidation to formaldehyde, with iron as an example, the catalyst is made by mixing particulate forms of Fe2O3 and MoO3 which form an active Fe2(MoO4)3/MoO3 component inside the reactor during methanol oxidation.Type: GrantFiled: April 6, 1999Date of Patent: December 18, 2001Assignee: Lehigh UniversityInventors: Israel E. Wachs, Laura E. Briand
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Publication number: 20010049335Abstract: A catalyst for use in the production of vinyl acetate which comprises (1) a catalyst support, (2) palladium, (3) an acid, (4) at least one acetic acid catalyst promoter and (5) at least one vinyl acetate promoter and/or co-promoter. A process for the production of vinyl acetate from ethylene and an oxygen-containing gas using the catalyst.Type: ApplicationFiled: May 21, 1999Publication date: December 6, 2001Inventors: SIMON JAMES KITCHEN, DAIYI QIN
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Patent number: 6303535Abstract: A nickel-containing hydrogenation catalyst is prepared by reducing nickel-containing catalyst material in the liquid phase in a single-stage process by means of hydrogen.Type: GrantFiled: July 17, 2000Date of Patent: October 16, 2001Assignee: Oxeno Olefinchemie GmbHInventors: Bernhard Scholz, Alfred Kaizik, Wilfried Büschken
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Patent number: 6291393Abstract: A metal oxide catalyst which can produce acrylic acid by a vapor phase catalytic oxidation of propane in high yield and has excellent abrasion resistance is disclosed. The metal oxide catalyst comprises Mo, V, Sb, A (A represents Nb or Ta) and optionally other metals, and is prepared through the following steps (1) and (2): (1) Step of reacting V+5 and Sb+3 at a temperature of 70° C. or higher in the presence of Mo+6 in an aqueous medium, and bubbling an oxygen-containing gas into the reaction solution during or after the reaction; and (2) Step of adding to the reaction product obtained in step (1) a solution containing a compound comprising A and an aqueous solution of nitric acid or ammonium nitrate, uniformly stirring these components, and then calcining the resulting mixture.Type: GrantFiled: March 9, 2000Date of Patent: September 18, 2001Assignee: Toagosei Co., Ltd.Inventors: Xinlin Tu, Mamoru Takahashi, Madoka Furuta, Hiroshi Niizuma
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Patent number: 6284215Abstract: A process for producing positive electrode active material includes feeding an aqueous nickel salt solution, aqueous solutions of different kinds of metals, aqueous solution containing ammonium ions and aqueous alkali solution each independently and simultaneously into a reaction vessel such that the amount of alkali metal is 1.9-2.3 moles relative to 1 mole of the total amount of nickel and different kinds of metals and the amount of ammonium ions is 2 moles or more relative to 1 mole of the total amount of nickel and different kinds of metals, the pH in the vessel is 11-13, the temperature in the vessel is 30-60° C. and the average residence time is 20-50 hours.Type: GrantFiled: April 27, 2000Date of Patent: September 4, 2001Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroyuki Sakamoto, Hidekatsu Izumi, Hirokazu Kimiya, Yoichi Izumi, Isao Matsumoto
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Publication number: 20010018402Abstract: A fixed bed Raney copper catalyst, which is doped with iron, noble metals or other metals, is employed as the fixed bed catalyst in the fixed bed dehydrogenation of alcohols.Type: ApplicationFiled: February 8, 2001Publication date: August 30, 2001Inventors: Daniel Ostgard, Monika Berweiler, Karsten Seelbach
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Publication number: 20010018400Abstract: A completely metallic catalyst for the oxidation of mixtures in the gaseous phase which contain carbon monoxide, hydrocarbons and/or soot, has a surface doped with a metallic element and is subjected to a second thermal treatment in an oxygen-containing atmosphere.Type: ApplicationFiled: September 30, 1999Publication date: August 30, 2001Applicant: Wilfred HerdaInventors: WILFRIED HERDA, ULRICH HEUBNER, JURGEN KOPPE, HARTMUS LAUSCH
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Patent number: 6274533Abstract: Novel sorbent systems for the desulfurization of cracked-gasoline are provided which are comprised of a bimetallic promotor on a particulate support such as that formed of zinc oxide and an inorganic or organic carrier. Such bimetallic promoters are formed of at least two metals of the group consisting of nickel, cobalt, iron, manganese, copper, zinc, molybdenum, tungsten, silver, tin, antimony and vanadium with the valence of same being reduced, preferably to zero. Processes for the production of such sorbents are provided wherein the sorbent is prepared from impregnated particulate supports or admixed to the support composite prior to particulation, drying, and calcination. Further disclosed is the use of such novel sorbents in the desulfurization of cracked-gasoline whereby there is achieved not only removal of sulfur but also an increase in the olefin retention in the desulfurized product. Such sorbents can also be utilized for the treatment of other sulfur-containing streams such as diesel fuels.Type: GrantFiled: December 14, 1999Date of Patent: August 14, 2001Assignee: Phillips Petroleum CompanyInventor: Gyanesh P. Khare
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Patent number: 6274532Abstract: A completely metallic catalyst for the oxidation of mixtures in the gaseous phase which contain carbon monoxide, hydrocarbons and/or soot, has a surface doped with a metallic element and is subjected to a second thermal treatment in an oxygen-containing atmosphere.Type: GrantFiled: September 30, 1999Date of Patent: August 14, 2001Assignee: Krupp VDM GmbHInventors: Wilfried Herda, Ulrich Heubner, Jürgen Koppe, Hartmut Lausch
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Patent number: 6267941Abstract: A catalyst system for deodorization and an apparatus for deodorization, each of which comprises a pretreating catalyst and a noble metal catalyst, the pretreating catalyst converting a sulfur atom of low oxidation state which deactivates the noble metal catalyst into a sulfur atom of high oxidation state which has little deactivation effects thereon, the noble metal catalyst oxidizing aldehyde, etc., wherein a material to be deodorized is brought into contact with the pretreating catalyst prior to being brought into contact with the noble metal catalyst. As the pretreating catalyst, a catalyst comprising at least one selected from the group consisting of vanadium, chromium, manganese, iron, cobalt, nickel, copper and oxides thereof is used, while as the noble metal catalyst, a catalyst comprising at least one selected from the group consisting of ruthenium, rhodium, palladium, silver, rhenium, osmium, iridium, platinum and gold is used.Type: GrantFiled: December 26, 1997Date of Patent: July 31, 2001Assignee: NEC CorporationInventor: Naoaki Sata
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Publication number: 20010009885Abstract: Solid mixed oxides composition of formula (I):Type: ApplicationFiled: January 6, 2000Publication date: July 26, 2001Inventors: GERARD HECQUET, JEAN-PIERRE SCHIRMANN, MICHEL SIMON, CHARLOTTE PHAM
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Patent number: 6201160Abstract: Alcohols are prepared by the catalytic hydrogenation of the corresponding carbonyl compounds at elevated temperatures and at superatmospheric pressure in the liquid phase by a process in which the catalyst used contains copper on an SiO2-containing carrier in the presence or absence of one or more of the elements magnesium, barium, zinc and chromium.Type: GrantFiled: November 19, 1996Date of Patent: March 13, 2001Assignee: BASF AktiengesellschaftInventors: Martin Brudermüller, Matthias Irgang, Martin Schmidt-Radde, Franz Merger, Tom Witzel, Detlef Kratz, Eckehard Danz, Arnold Wittwer, Michael Hesse, Manfred Sauerwald, Cristina Freire Erdbrügger
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Patent number: 6197719Abstract: A process for the activation of perovskite-type oxide by increasing its surface area and/or catalytic activity, which comprises: (i) treating perovskite-type oxide hydrothermally with liquid water with water/perovskite-type oxide ratio of above 0.1 at temperature of 50°-500° C. and period of 0.1-100 h under autogeneous pressure and drying the resulting mass or treating perovskite-type oxide hydrothermally with water vapors with or without any inert gas at space velocity of above 100 h−1, temperature of 200°-1000° C. and a period of 0.1-100 h and (ii) calcining the hydrothermally treated perovskite-type oxide in air or inert gas or under vacuum at temperature of 300°-1000° C. for a period of 0.1-100 h.Type: GrantFiled: April 1, 1999Date of Patent: March 6, 2001Assignee: Council of Scientific and Industrial ResearchInventors: Vasant Ramchandra Choudhary, Subhabrata Banerjee
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Patent number: 6177382Abstract: In a process for preparing spinel extrudates by extruding molding compositions comprising spinel powder with or without extrusion assistants, stabilizers, shrinkage reducers, pore-formers or mixtures thereof subsequent drying and calcination of the extrudates, the molding composition further comprises aluminum oxides or aluminum oxide hydrates and metal nitrates.Type: GrantFiled: March 25, 1999Date of Patent: January 23, 2001Assignee: BASF AktiengesellschaftInventors: Michael Hesse, Otto Kumberger
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Patent number: 6153162Abstract: A process for the catalytic reduction of NO.sub.x, the reduction taking place in the presence of a catalyst which comprises(a) from 20 to 97 wt % of A.sub.2 O.sub.3,(b) from 1 to 40 wt % of CuO,(c) from 1 to 50 wt % of ZnO,(d) from 1 to 40 wt % of Ag,(e) from 0 to 2 wt % of Pt,(f) from 0 to 20 wt % of oxides of rare earth metals, elements of the 3rd subgroup of the Periodic Table of the Elements or mixtures thereof,based on the total weight of the components (a) to (e), which adds up to 100 wt %, wherein, in each case, up to half the weight of the component (a) may be replaced by Fe.sub.2 O.sub.3, Cr.sub.2 O.sub.3, Ga.sub.2 O.sub.3 or mixtures thereof, of the component (b) by CoO, of the component (c) by MgO, of the component (d) by Au and of the component (e) by Pd, Ru, Os, Ir, Rh, Re or mixtures thereof, is used for reducing NO.sub.x, especially in combustion off-gases, the components (a), (b) and (c) forming a spinel which is doped with the components (d), (e) and (f).Type: GrantFiled: June 16, 1999Date of Patent: November 28, 2000Assignees: BASF Aktiengesellschaft, Daimler Benz AktiengesellschaftInventors: Thomas Fetzer, Bernd Morsbach, Otto Kumberger, Martin Hartweg, Rolf-Dirc Roitzheim, Andrea Seibold, Leonhard Walz
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Patent number: 6147125Abstract: A method for producing dimethyl ether by forming a slurry by introducing a catalyst into a solvent and introducing a mixed gas comprising carbon monoxide and hydrogen into the slurry. The catalyst comprises alumina particles having an average size of 200 .mu.m or less and a methanol synthesis catalyst layer formed around each of the alumina particles. The methanol synthesis catalyst has a weight ratio of 0.05 to 5 to a weight of the alumina particles. The catalyst is produced by forming a layer comprising a methanol synthesis catalyst around each of the alumina particles.Type: GrantFiled: April 24, 1997Date of Patent: November 14, 2000Assignee: NKK CorporationInventors: Tsutomu Shikada, Yotaro Ohno, Takashi Ogawa, Masatsugu Mizuguchi, Masami Ono, Kaoru Fujimoto
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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: 6077487Abstract: A process and composition for removing metal carbonyls and moisture from a gas wherein the gas is contacted with a metal oxide, an organometallic oxide or mixtures thereof having a reduction potential greater than about 0.175 volts and a composition capable of removing moisture from the gas.Type: GrantFiled: November 5, 1997Date of Patent: June 20, 2000Assignee: Millipore CorporationInventor: James T. Snow
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Patent number: 6042796Abstract: A process and composition for removing metal carbonyls and moisture from a gas wherein the gas is contacted with a metal oxide, an organometallic oxide or mixtures thereof having a reduction potential greater than about 0.175 volts and a composition capable of removing moisture from the gas.Type: GrantFiled: November 18, 1998Date of Patent: March 28, 2000Assignee: Millipore CorporationInventor: James T. Snow
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Patent number: 6037295Abstract: The subject invention relates to a catalyst comprises 1-75% of iron oxide, 1-10% of titanium metal oxide and the balance being attapulgate useful for the preparation of alkylated aromatic amines.Type: GrantFiled: October 8, 1998Date of Patent: March 14, 2000Assignee: Council of Scientific & Industrial ResearchInventors: Bankupalli Satyavathi, Akash Narhar Rao Patwari, Uday Triambakraj Bhalerao
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Patent number: 6025523Abstract: Solid mixed oxides composition of formula (I):Mo.sub.12 V.sub.a Sr.sub.b W.sub.c Cu.sub.d Si.sub.e O.sub.x(I)2.ltoreq.a.ltoreq.14, 0.1.ltoreq.B.ltoreq.6, 0.ltoreq.c.ltoreq.12, 0.ltoreq.d.ltoreq.6, 0.ltoreq.e.ltoreq.15; x is the quantity of oxygen bonded to the other elements and depends on their oxidation states, are used in the manufacture of acrylic acid by oxidation of acrolein, the said solid composition reacting with acrolein according to the redox reaction (1):SOLID.sub.oxidized +ACROLEIN.fwdarw.SOLID.sub.reduced +ACRYLIC ACID(1).To manufacture acrylic acid, a gaseous mixture of acrolein and of water vapor and, if appropriate, of an inert gas is passed over a solid composition of formula (I), to conduct the redox reaction (1) by operating at a temperature of 200 to 500.degree. C., at a pressure of 1.01.times.10.sup.4 to 1.01.times.10.sup.6 Pa (0.1 to 10 atmospheres), and with a residence time of 0.01 second to 90 seconds, in the absence of molecular oxygen.Type: GrantFiled: February 27, 1998Date of Patent: February 15, 2000Assignee: ELF Atochem S.A.Inventors: Gerard Hecquet, Jean-Pierre Schirmann, Michel Simon, Charlotte Pham
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Patent number: 6001768Abstract: In the process for preparing an aromatic carbonate from an aromatic hydroxy compound, CO and O.sub.2 in the presence of a quaternary salt and a base, use is advantageously made of supported catalysts which, in the reaction-ready state, contain a platinum metal, a platinum metal compound or a complex containing a platinum metal compound on a support comprising a metal oxide whose metal can occur in a plurality of oxidation states.Type: GrantFiled: March 29, 1996Date of Patent: December 14, 1999Assignee: Bayer AktiengesellschaftInventors: Hans-Josef Buysch, Carsten Hesse, Jorg-Dietrich Jentsch, Johann Rechner, Eberhard Zirngiebl
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Patent number: 5968869Abstract: A catalyst for the production of vinyl acetate by reaction of ethylene, oxygen and acetic acid comprising a porous support on the porous surfaces of which is deposited metallic copper in a zone surrounded by deposits of catalytically effective amounts of metallic palladium and gold, neither of which is substantially intermingled with said copper. Methods for preparing the catalyst and for synthesizing vinyl acetate utilizing the catalyst are also disclosed.Type: GrantFiled: June 3, 1997Date of Patent: October 19, 1999Assignee: Celanese International CorporationInventors: Ioan Nicolau, Adolfo Aguilo, Philip M. Colling
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Patent number: 5965099Abstract: A catalyst and a method for producing the catalyst, for catalytic reduction of NO.sub.x and oxidation of hydrocarbons, the catalyst comprises a zinc, copper and aluminum spinel to which, at least one element selected from palladium, platinum, rhodium, ruthenium, osmium, iridium, rhenium and/or rare earth metals, such as lanthanum and cerium, vanadium, titanium, niobium, molybdenum, tungsten and/or salts thereof and/or oxides thereof has been added.Type: GrantFiled: December 7, 1998Date of Patent: October 12, 1999Assignees: Daimler-Benz Aktiengesellschaft, BASF AktiengesellschaftInventors: Martin Hartweg, Andrea Seibold, Leonhard Walz, Thomas Fetzer, Bernd Morsbach
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Patent number: 5910608Abstract: A coated catalyst which consists of a hollow cylindrical carrier and a catalytically active oxide material applied to the outer surface of the carrier, the applied catalytically active oxide material being applied in a coat thickness of from 10 to 1000 .mu.m, and having a specific catalytic surface area of from 20 to 30 m.sup.2 /g and an abrasion of <10, preferably <5, particularly preferably <0,5, % by weight in the turntable abrasion test. The catalyst is useful in the preparation of acrylic acid by the gas phase oxidation of acroleins.Type: GrantFiled: June 4, 1997Date of Patent: June 8, 1999Assignee: BASF AktiengesellschaftInventors: Andreas Tenten, Peter Weidlich, Gerd Linden
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Patent number: 5902767Abstract: This invention is directed to a catalyst that comprises (i) an acidic solid oxide component comprising an oxide of a Group IVB metal modified with an anion or oxyanion of a Group VIB metal, and (ii) a Group IB metal or metal oxide component. This catalyst may be used, for example, to isomerize paraffins.Type: GrantFiled: November 18, 1998Date of Patent: May 11, 1999Assignee: Mobil Oil CorporationInventors: Charles Theodore Kresge, Clarence D. Chang, Jose Guadalupe Santiesteban, David S. Shihabi, Scott Andrew Stevenson, James C. Vartuli
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Patent number: 5851948Abstract: A catalyst for effective oxidation of volatile organic compounds (VOCs) includes 0.010-2 wt. % of a noble metal such as platinum in combination with 0.5-15 wt. % of a transition metal oxide such as chromium oxide (Cr.sub.2 O.sub.3), with at least the noble metal being deposited as a thin outer layer or shell not exceeding 0.10 mm thickness on a porous inert support such as alumina or silica having surface area of 10-400 m.sup.2 /g. The catalyst is made by adding the transition metal oxide such as chromium oxide (Cr.sub.2 O.sub.3) to the support material particles, and then subsequently mixing a solution of ammonium platinum nitrate with a suitable carrier liquid so as to form a "cluster" structure on the support material and which limits penetration of the active noble metal into the porous support, then drying, reducing, and calcining the metals-loaded support material.Type: GrantFiled: August 20, 1996Date of Patent: December 22, 1998Assignee: Hydrocarbon Technologies, Inc.Inventors: Karl T. Chuang, Mingqian Zhang, Bing Zhou
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Patent number: 5849662Abstract: The present invention relates to catalysts which comprise element(s) of group IB, and element(s) and/or compound(s) of the transition metals, with or without support. The catalyst are activated with O.sub.2 and/or oxygen containing compound(s) or the mixture of oxygen and/or oxygen containing compound(s) with inert gas(es) to make them more active.Type: GrantFiled: June 7, 1995Date of Patent: December 15, 1998Assignee: Chulalongkorn UniversityInventor: Piyasan Praserthdam
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Patent number: 5834395Abstract: Catalyst for controlling emissions of the present invention is comprised of at least one kind of transition metal atoms and at least one of Al or Si, wherein said transition metal atoms form a part of the surface of the catalyst for purifying exhaust gas. Accordingly, the catalyst for purifying exhaust gas has both high performance for purifying NO.sub.x and high heat resistance, because monoatomic active metal disperses in the catalyst structure, active metal is taken firmly in the structure, and said transition metal forms a part of the surface of the surface.Type: GrantFiled: March 11, 1996Date of Patent: November 10, 1998Assignee: Next Generation Catalyst Research Institute, Co., Ltd.Inventor: Takashi Honda
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Patent number: 5817872Abstract: A copper catalyst obtained by reducing a precursor containing copper and aluminum and not containing substantially malachite and aluminum hydroxide permits preparation of amides with a high productivity and in a high selectivity by the hydration of nitrites.Type: GrantFiled: August 1, 1995Date of Patent: October 6, 1998Assignee: Mitsui Chemicals, Inc.Inventors: Tadatoshi Honda, Hiroshi Ohe, Shinichiro Ichikawa, Hisaharu Kuboyama, Satoru Miyazoe
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Patent number: 5808143Abstract: Catalysts of the formula I?A.sub.a B.sub.b O.sub.x !.sub.p ?C.sub.c D.sub.d Fe.sub.e Co.sub.f E.sub.i F.sub.j O.sub.y !.sub.q I,whereA is bismuth, tellurium, antimony, tin and/or copper,B is molybdenum and/or tungsten,C is an alkali metal, thallium and/or samarium,D is an alkaline earth metal, nickel, copper, cobalt, manganese, zinc, tin, cerium, chromium, cadmium, molybdenum, bismuth and/or mercury,E is phosphorus, arsenic, boron and/or antimony,F is a rare-earth metal, vanadium and/or uranium,a is from 0.01 to 8,b is from 0.1 to 30,c is from 0 to 4,d is from 0 to 20,e is from 0 to 20,f is from 0 to 20,i is from 0 to 6,j is from 0 to 15,x and y are numbers determined by the valency and frequency of the elements other than oxygen in I, and p and q are numbers whose ratio p/q is in the range from 0.001 to 0.Type: GrantFiled: March 22, 1996Date of Patent: September 15, 1998Assignee: BASF AktiengesellschaftInventors: Lothar Karrer, Hans-Peter Neumann, Hans-Dieter Eichhorn, Robin Stuart Jarret
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Patent number: 5759947Abstract: A bifunctional catalyst containing multimetal oxides, and a method for preparing the same, includes a support of a moulded mixture of silica and alumina in a weight ratio of 1:1.2-2.5, and upon the support is deposited 3-30% by weight of metal oxides based on the total weight of the catalyst. The metal elements of the metal oxides are at least two selected from transition metal of period 4 of the periodic table and lanthanide. The metal oxides of the catalyst exist in the state of non-composite oxides.Type: GrantFiled: March 18, 1996Date of Patent: June 2, 1998Inventor: Hongxing Zhou
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Patent number: 5750819Abstract: Hydroconversion of paraffin containing hydrocarbon feeds is effected over a supported Group VIII and Group VI metal containing catalyst also containing a hydrocracking suppressant such as a Group IB metal, wherein the catalyst is preferably prepared by fixing the Group IB metal on to the support prior to incorporating the Group VI metal on to the support.Type: GrantFiled: November 5, 1996Date of Patent: May 12, 1998Assignee: Exxon Research and Engineering CompanyInventors: Robert J. Wittenbrink, Daniel F. Ryan, William C. Baird, Jr., Kenneth L. Riley, Jack W. Johnson
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Patent number: 5728643Abstract: The present invention provides an NO.sub.x decomposition catalyst which can decompose NO.sub.x in exhaust gas to decrease the amount of NO.sub.x in exhaust gas and is improved in durability through suppression of thermal decomposition thereof, and an exhaust gas purifier wherein said catalyst is used. This NO.sub.x decomposition catalyst is a compound having a brownmillerite type structure represented by the general formula: A.sub.3-X B.sub.X C.sub.4-Y D.sub.Y O.sub.Z, the carbon content of which compound may be at most 1.25 wt. %. This NO.sub.x decomposition catalyst can be used in an exhaust gas purifier applicable to an internal combustion engine.Type: GrantFiled: January 24, 1997Date of Patent: March 17, 1998Assignee: Isuzu Ceramics Research Institute Co., Ltd.Inventors: Isao Naitoh, Kazuo Ohsumi
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Patent number: 5728644Abstract: The present invention is directed toward a catalyst composition comprising a catalyst prepared by a process comprising: (a) impregnating an oxide precursor selected from the group consisting of rare earth oxide precursors, yttria precursors and mixtures thereof, onto an inorganic refractory oxide support; (b) drying said support at a temperature of about 100.degree. to about 120.degree. C. followed by calcining said support at a temperature of about 400.degree. to about 600.degree. C.; and (c) compositing or depositing on said support of step (b), a catalyst precursor salt represented by (ML)(Mo.sub.y W.sub.1-y O.sub.4).sub.a wherein M comprises Cr and/or one or more divalent promoter metals selected from the group consisting of Mn, Fe, Co, Ni, Cu, Zn and mixtures thereof, wherein y is any value ranging from 0 to 1, and wherein L is one or more neutral, nitrogen-containing ligands at least one of which is a chelating polydentate ligand; a=1 when chromium is not one of the promoter metals and 0.5.ltoreq.a.Type: GrantFiled: September 5, 1995Date of Patent: March 17, 1998Assignee: Exxon Research and Engineering CompanyInventors: Teh Chung Ho, Stuart Leon Soled, Sabato Miseo, Gary Brice Mc Vicker, Michel Daage, Viktor Buchholz
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Patent number: 5686373Abstract: Polymetal oxide materials of the general formula I?A!.sub.p ?B!.sub.q (I),where ##STR1## X.sup.1 is W, Nb, Ta, Cr and/or Ce, X.sup.2 is Cu, Ni, Co, Fe, Mn and/or Zn,X.sup.3 is Sb and/or Bi,X.sup.4 is Li, Na, K, Rb, Cs and/or H,X.sup.5 is Mg, Ca, Sr and/or Ba,X.sup.6 is Si, Al, Ti and/or Zr,X.sup.7 is Mo, W, V, Nb and/or Ta,a is from 1 to 8,b is from 0.2 to 5,c is from 0 to 23,d is from 0 to 50,e is from 0 to 2,f is from 0 to 5,g is from 0 to 50,h is from 4 to 30,i is from 0 to 20,x and y are each a number which is determined by the valency and frequency of the elements other than oxygen in I and p and q are non-zero numbers whose ratio p/q is from 160:1 to 1:1,and their use as catalysts.Type: GrantFiled: February 22, 1995Date of Patent: November 11, 1997Assignee: BASF AktiengesellschaftInventors: Andreas Tenten, Friedrich-Georg Martin, Hartmut Hibst, Laszlo Marosi, Veronika Kohl
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Patent number: 5656567Abstract: A catalyst unit (16), in which a quantity of a relatively expensive material such as platinum is replaced by a greater quantity of a relatively inexpensive material such as palladium. Thus, material cost saved by "tailoring" a pack is used to pay for a large quantity of a cheaper material. Although the cheaper material is generally less intrinsically efficient than the expensive material, a sufficient additional amount of the cheaper material can be used to more than compensate for this lack of efficiency. Thus, a catalytic pack of high catalytic efficiency, low material cost, low metal loss and long run duration can be produced.Type: GrantFiled: March 9, 1995Date of Patent: August 12, 1997Assignee: PGP Industries, Inc.Inventor: Alan Edward Heywood
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Patent number: 5534475Abstract: Catalytically active ceramic monoliths coated with gamma alumina and impregnated with chromium, copper and nickel are used in catalytic converters for reduction of pollutants resulting from exhaust gases produced by internal combustion engines fueled with leaded gasoline.Type: GrantFiled: March 2, 1994Date of Patent: July 9, 1996Assignee: Instituto Mexicano Del PetroleoInventors: Luis E. Miramontes Cardenas, Salavador Castillo Cervantes, Florencia M. Moran Pineda
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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: 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: 5364825Abstract: Multimetal oxide compositions of the formula I[X.sup.1.sub.a X.sup.2.sub.b O.sub.x ].sub.p [X.sup.3.sub.c X.sup.4.sub.d X.sup.5.sub.e X.sup.6.sub.f X.sup.7.sub.g X.sup.2.sub.h O.sub.y ].sub.q(I)whereX.sup.1 is bismuth, tellurium, antimony, tin and/or copper,X.sup.2 is molybdenum and/or tungsten,X.sup.3 is an alkali metal, thallium and/or samarium,X.sup.4 is an alkaline earth metal, nickel, cobalt, copper, manganese, zinc, tin, cadmium and/or mercury,X.sup.5 is iron, chromium, cerium and/or vanadium,X.sup.6 is phosphorus, arsenic, boron and/or antimony,X.sup.7 is a rare-earth metal, titanium, zirconium, niobium, tantalum, rhenium, ruthenium, rhodium, silver, gold, aluminum, gallium, indium, silicon, germanium, lead, thorium and/or uranium,a is from 0.01 to 8,b is from 0.Type: GrantFiled: May 21, 1993Date of Patent: November 15, 1994Assignee: BASF AktiengesellschaftInventors: Hans-Peter Neumann, Hans Martan, Hermann Petersen, Walter Doerflinger
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Patent number: 5340548Abstract: An exhaust gas cleaner comprising a heat-resistant, porous filter, a porous ceramic layer formed on the filter, and a catalyst supported by the ceramic layer, the catalyst consisting essentially of:(a) at least one of alkali metal elements;(b) copper and vanadium; and(c) at least one of rare earth elements.By using this exhaust gas cleaner, particulate matter in the exhaust gas is oxidized by the catalyst supported by the filter, and nitrogen oxides are reduced by the particulate matter serving as a reducing agent.Type: GrantFiled: February 11, 1993Date of Patent: August 23, 1994Assignee: Kabushiki Kaisha RikenInventors: Akira Abe, Satoshi Sumiya, Yoshikazu Takahashi, Kiyohide Yoshida, Gyo Muramatsu
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Patent number: 5221652Abstract: The present invention relates to a novel route for the synthesis of methanol, and more specifically to the production of methanol by contacting synthesis gas under relatively mild conditions in a slurry phase with a catalyst combination comprising reduced copper chromite and basic alkali salts or alkaline earth salts. The present invention allows the synthesis of methanol to occur in the temperature range of approximately 100.degree.-160.degree. C. and the pressure range of 40-65 atm. The process produces methanol with up to 90% syngas conversion per pass and up to 95% methanol selectivity. The only major by-product is a small amount of easily separated methyl formate. Very small amounts of water, carbon dioxide and dimethyl ether are also produced. The present catalyst combination also is capable of tolerating fluctuations in the H.sub.2 /CO ratio without major deleterious effect on the reaction rate. Furthermore, carbon dioxide and water are also tolerated without substantial catalyst deactivation.Type: GrantFiled: March 26, 1991Date of Patent: June 22, 1993Assignee: The University of PittsburghInventors: John W. Tierney, Irving Wender, Vishwesh M. Palekar
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Patent number: 5206203Abstract: Acid-resistant copper oxide-chromium oxide catalysts for hydrogenation of fatty acids or fatty acid mixtures and/or the esters thereof are obtained through heat treatment of copper oxide and chromium oxide or of precursor compounds that are convertible into copper oxide or chromium oxide and which contain aluminum zirconium, cerium and/or lanthanum oxide as an additional metal component. The acid resistance is defined by the fact that the amount of copper which is dissolved by stirring 10 g of the catalyst for 2 minutes in 100 ml of 10 weight percent acetic acid at 20.degree. C., is a maximum of 200 mg.Type: GrantFiled: November 21, 1991Date of Patent: April 27, 1993Assignee: Sud-Chemie AktiengesellschaftInventors: Michael Schneider, Gerd Maletz, Karl Kochloefl
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Patent number: 5204309Abstract: A catalyst for neutralizing vapors and aerosols of organic compounds, carbon monoxide, and a variety of other oxidizable materials from an exhaust which contains oxygen. The catalyst has a carrier made either from titanium dioxide and aluminum oxide or from magnesium-aluminum spinel modified with titanium dioxide. The catalyst has a surface film of active components which include copper oxide and copper chromite (or their nickel or cobalt analog) chemically integrated into the carrier surface by Cu-o-Ti and Cr-O-Ti chains (or their nickel or cobalt analog). The catalyst should comprise from about 0.1% to about 15% by weight of copper oxide (CuO), chromium oxide (Cr.sub.2 O.sub.3), or mixtures of those compounds; from about 5% to about 25% by weight of copper chromite (CuCr.sub.2 O.sub.4); from about 3% to about 25% by weight titanium dioxide (TiO.sub.2); and from about 60% to about 90% by weight of aluminum oxide (Al.sub.2 O.sub.3), magnesium/aluminum spinel (MgAl.sub.2 O.sub.Type: GrantFiled: December 30, 1991Date of Patent: April 20, 1993Assignee: TPCT Chemicals, Inc.Inventors: Vladimir N. Vorob'iev, Tatjana B. Molodogenjuk
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Patent number: 5173468Abstract: Compositions of the formula IMO.sub.12 P.sub.a V.sub.b X.sup.1.sub.c X.sup.2.sub.d X.sup.3.sub.e Sb.sub.f Re.sub.g S.sub.h O.sub.n (I)whereX.sup.1 is potassium, rubidium and/or cesium,X.sup.2 is copper and/or silver,X.sup.3 is cerium, boron, zirconium, manganese and/or bismuth,a is from 0.5 to 3.0,b is from 0.01 to 3.0,c is from 0.2 to 3.0,d is from 0.01 to 2.0,e is from 0 to 2.0,f is from 0.01 to 2.0,g is from 0 to 1.0,h is from 0.001 to 0.5 andn is a number determined by the valency and content ofthe elements different from oxygen in I, are used as catalysts for preparing methacrylic acid by gas-phase oxidation of methacrolein.Type: GrantFiled: July 12, 1991Date of Patent: December 22, 1992Assignee: BASF AktiengesellschaftInventors: Karl-Heinz Boehning, Gerd Duembgen, Ulrich Hammon, Richard Krabetz, Franz Merger, Matthias Schwarzmann, Fritz Thiessen, Herbert Vogel
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Patent number: 5169869Abstract: A process for converting synthesis gas to n-paraffins or higher alcohols utilizes a mixed copper-chromium oxide catalyst. The process allows great flexibility in selecting the product mix by changing catalyst compositions and process conditions.Type: GrantFiled: July 3, 1991Date of Patent: December 8, 1992Assignee: Amoco CorporationInventors: Jeffrey T. Miller, Thomas D. Nevitt, deceased
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Patent number: 5134108Abstract: This hydrogenation catalyst comprises a major amount of the oxides of a first metal selected from copper or zinc, a second metal selected from chromium, molybdenum, tungsten and vanadium, and optionally, a minor amount of the oxide of a promoter metal selected from the group consisting of manganese, barium, zinc, nickel, cobalt, cadmium, iron and any combination thereof provided that the promotor metal is not zinc if the first metal is zinc. The average particle diameter of the powder is from about 6 to about 20 microns; and the particle surface area is from about 20 to about 70 m.sup.2 /g.Type: GrantFiled: May 22, 1991Date of Patent: July 28, 1992Assignee: Engelhard CorporationInventors: Deepak S. Thakur, Eugene Palka, Thomas J. Sullivan, Eugene Nebesh, Brian D. Roberts
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Patent number: 5124295Abstract: In one embodiment,the invention relates to a formed copper chromite catalyst prepared from a blend comprising from about 20 to about 80% by weight of copper chromite and from about 20 to about 80% by weight of at least one extrudable inorganic binder material wherein the catalyst has a surface area of from about 20 to about 225 m.sup.2 /g, and the total pore volume of the pores in said catalyst having a diameter of up to about 95,000 .ANG. is between about 0.35 to about 1 cc/g.Type: GrantFiled: December 13, 1990Date of Patent: June 23, 1992Assignee: Engelhard CorporationInventors: Eugene Nebesh, Donald G. Kelly, Lawrence T. Novak
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Patent number: 5116796Abstract: The present invention discloses two polyoxoanion supported metal complexes found to be useful in olefin hydrogenation. The complexes are novel compositions of matter which are soluble in organic solvents. In particular, the compositions of matter comprise A.sub.x [L.sub.n Ir.sup.(I) .multidot.X.sub.2 M.sub.15 M'.sub.3 O.sub.62 ].sup.x- and A.sub.y [L.sub.n Ir.sup.(I) .multidot.X.sub.2 M.sub.9 M'.sub.3 O.sub.40 ].sup.y- where L is a ligand preferably chosen from 1,5-cyclooctadiene (COD), ethylene, cyclooctene, norbornadiene and other olefinic ligands; n=1 or 2 depending upon the number of double bonds present in the ligand L; X is a "hetero" atom chosen from B, Si, Ge, P, As, Se, Te, I, Co, Mn and Cu; M is either W or Mo; M' is preferably Nb or V but Ti, Zr, Ta, Hf are also useful; and A is a countercation preferably selected from tetrabutyl ammonium and alkali metal ions.Type: GrantFiled: October 26, 1988Date of Patent: May 26, 1992Assignee: The University of OregonInventors: David J. Edlund, Richard G. Finke, Robert J. Saxton