And Group Iii Metal Containing (i.e., Sc, Y, Al, Ga, In Or Tl) Patents (Class 502/346)
  • Patent number: 6153555
    Abstract: This invention is a single phase metal alumina material made by sol-gel techniques from certain heterometallic alkoxides which include aluminum and at least alkali metals, and optionally alkaline earth metals and lanthanide.
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: November 28, 2000
    Assignee: Ford Global Technologies, Inc.
    Inventors: Chaitanya Kumar Narula, Sabine Rita Nakouzi-Phillips
  • Patent number: 6153162
    Abstract: 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: Grant
    Filed: June 16, 1999
    Date of Patent: November 28, 2000
    Assignees: BASF Aktiengesellschaft, Daimler Benz Aktiengesellschaft
    Inventors: Thomas Fetzer, Bernd Morsbach, Otto Kumberger, Martin Hartweg, Rolf-Dirc Roitzheim, Andrea Seibold, Leonhard Walz
  • Patent number: 6143167
    Abstract: Compositions comprising a component containing (i) an acidic oxide support, (ii) an alkali metal and/or alkaline earth metal or mixtures thereof, (iii) a transition metal oxide having oxygen storage capability, and (iv) a transition metal selected from Groups Ib and/or IIb of the Periodic Table provide NO.sub.x control performance in FCC processes. The acidic oxide support preferably contains silica alumina. Ceria is the preferred oxygen storage oxide. Cu and Ag are preferred Group I/IIIb transition metals. The compositions are especially useful in the cracking of hydrocarbon feedstocks having above average nitrogen content.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: November 7, 2000
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Alan W. Peters, John A. Rudesill, Gordon Dean Weatherbee, Edward F. Rakiewicz, Mary Jane A. Barbato-Grauso
  • Patent number: 6129834
    Abstract: Compositions comprising a component containing (i) an acidic oxide support, (ii) an alkali metal and/or alkaline earth metal or mixtures thereof, (iii) a transition metal oxide having oxygen storage capability, and (iv) a transition metal selected from Groups Ib and/or IIb of the Periodic Table provide NO.sub.x control performance in FCC processes. The acidic oxide support preferably contains silica alumina. Ceria is the preferred oxygen storage oxide. Cu and Ag are preferred Group I/IIb transition metals. The compositions are especially useful in the cracking of hydrocarbon feedstocks having above average nitrogen content.
    Type: Grant
    Filed: April 9, 1997
    Date of Patent: October 10, 2000
    Assignee: W. R. Grace & Co. -Conn.
    Inventors: Alan W. Peters, John A. Rudesill, Gordon Dean Weatherbee, Edward F. Rakiewicz, Mary Jane A. Barbato-Grauso, Xinjin Zhao
  • Patent number: 6121188
    Abstract: An activated fixed-bed Raney metal catalyst which is free of metal powder, has macropores and is based on an alloy of aluminum and at least one metal of subgroup VIII of the Periodic Table, contains more than 80% by volume, based on the total pores, of macropores and is used for the hydrogenation of low molecular weight and polymeric organic compounds.
    Type: Grant
    Filed: October 15, 1997
    Date of Patent: September 19, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Boris Breitscheidel, Uwe Diehlmann, Thomas Ruhl, Sabine Weiguny
  • Patent number: 6121189
    Abstract: A catalyst system useful at room temperature for the destruction of ozone (O.sub.3), has washcoat of high surface area support containing Mn/Cu catalyst deposited on a macroporous carrier, such as a honeycomb monolith, optionally with the addition of noble metal (such as Pt) washcoat to remove carbon monoxide.
    Type: Grant
    Filed: December 8, 1998
    Date of Patent: September 19, 2000
    Assignee: Goal Line Environmental Technologies LLC
    Inventors: Larry E. Campbell, Michele W. Sanders
  • Patent number: 6083868
    Abstract: A high heat-resistant catalyst support comprises an amorphous composite oxide which is constituted by:(i) an NOx storage component comprising an oxide of at least one element selected from the group consisting of alkali metals, alkaline-earth metals and rare-earth elements,(ii) alumina (Al.sub.2 O.sub.3); and(iii) at least one element selected from the group consisting of titania (TiO.sub.2), zirconia (ZrO.sub.2) and silica (SiO.sub.2).Furthermore, TiO.sub.2, ZrO.sub.2 and SiO.sub.2 are acidic, and at least one element selected from the group consisting of TiO.sub.2, ZrO.sub.2 and SiO.sub.2 is highly dispersed to form composite. So, SOx having acidity is prevented from approaching the NOx storage component, and sulfur poisoning is prevented. Moreover, bonding force of the NOx storage component to the catalyst support strengthens, and the NOx storage component is prevented from being scattered.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: July 4, 2000
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takeru Yoshida, Mikio Murachi, Shinji Tsuji
  • Patent number: 6075175
    Abstract: A process for catalytically isomerizing olefins, particularly for isomerizing alkenyl bridged ring compounds to the corresponding alkylidene bridged ring compounds. The catalyst is prepared by forming a dispersion of a metallic alkali metal on a support with simultaneous exposure to oxygen.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: June 13, 2000
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Robert Scott Smith, Jos Peter Wristers
  • Patent number: 6060420
    Abstract: A novel composite oxide has an A-site defect type perovskite structure represented by a general formula:A.sub.1--.alpha. BO.sub.3--.delta.wherein A is at least one element selected from the group consisting of alkali metals, alkaline earth metals, rare earth elements, Y and Pb, and B is at least one element selected from the group consisting of Ti, Mn, Fe, Co, Ni, Cu and Al, and .alpha. is 0<.alpha.<0.2 and .delta. is 0.ltoreq..delta..ltoreq.1, provided that only a known perovskite type oxide (La.sub.1-x Sr.sub.x).sub.1-.alpha. MnO.sub.3-.delta. (when .alpha. is 0.06, x is 0.08.ltoreq.x.ltoreq.0.30, while when the value of x is 0.11, .alpha. is 0.06<.alpha.<0.11) is excluded.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: May 9, 2000
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Fumio Munakata, Hiroaki Kaneko, Takeshi Miyamoto
  • Patent number: 6051163
    Abstract: In a process for steam-reforming methanol, in which methanol and water are reacted at a catalyst with formation of hydrogen, the catalyst used can be prepared by(a) precipitating a solution of zinc salts and aluminum salts, the atomic ratio of Zn:Al being from 3:1 to 1:3, with an alkali metal carbonate solution or alkali metal hydroxide solution at a pH in the range from 5 to 12 and at from 20 to 100.degree. C.,(b) separating off and washing the precipitate to remove alkali metal ions,(c) drying the precipitate,(d) calcining the precipitate at from 250 to 800.degree. C. to give a mixed oxide,(e) dispersing the mixed oxide in an acidic solution of copper salts and zinc salts, the atomic ratio of Cu:Zn being from 1:5 to 20:1 in the solution,(f) precipitating the dispersion with an alkali metal carbonate solution or alkali metal hydroxide solution at a pH in the range from 6 to 9 and at from 20 to 100.degree. C.
    Type: Grant
    Filed: September 9, 1998
    Date of Patent: April 18, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Otto Kumberger, Michael Jolyon Sprague, Otto Hofstadt
  • Patent number: 6048820
    Abstract: The invention relates to a copper-based catalyst with high activity and a long catalyst life and to a method of producing the catalyst. This catalyst essentially comprises copper oxide, zinc oxide, aluminum oxide, and silicon oxide and optionally containing zirconium oxide, gallium oxide, and palladium oxide, wherein with the total weight of the catalyst being taken as 100%, the above oxides account for, in the order mentioned, 20-60 weight %, 10-50 weight %, 2-10 weight %, 0.3-0.9 weight %, 0-40 weight %, 0-10 weight %, and 0-10 weight %, respectively, and the silicon oxide mentioned above has been derived from colloidal silica or dissolved silica in water, which catalyst has been subjected to calcination at 480-690.degree. C.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: April 11, 2000
    Assignees: Agency of Industrial of Sciences and Technology, The Reseach Institute of Innovative Technology for the Earth
    Inventors: Masami Takeuchi, Hirotaka Mabuse, Taiki Watanabe, Michiaki Umeno, Takashi Matsuda, Kozo Mori, Kenji Ushikoshi, Jamil Toyir, Shengcheng Luo, Jingang Wu, Masahiro Saito
  • Patent number: 5990040
    Abstract: A catalyst for the conversion of carbon oxide comprising 30 to 70% CuO, 20 to 90% ZnO, 0.1 to 20% of an element of Group IV-B in the form of an oxide, preferably titanium and/or zirconium, most preferably titanium, about 5 to about 40 percent Al.sub.2 O.sub.3 and preferably 50 to 1000 ppm of a Group 1-A element in the form of an oxide.
    Type: Grant
    Filed: July 28, 1997
    Date of Patent: November 23, 1999
    Assignee: United Catalysts Inc.
    Inventors: X. D. Hu, Jon P. Wagner
  • Patent number: 5972829
    Abstract: A catalyst for improving combustion of fluid fuels which comprises three layers. An inner or core layer of complex oxides of a mixture of Mn, Ni, Co and Cu; an intermediate layer containing alumina and silicate and optionally silicon carbide and an outer layer comprising a fired mixture of a Pt--Pd,Rh alloy on Al.sub.2 O.sub.3, Mo--Al.sub.2 O.sub.3, mixed oxides of La--Sr--Co and at least one of Vanadium oxide on alumina and Ag on Alumina. The catalyst can contact the fluid fuel in a storage tank, in a pipeline or in a combustion chamber. The invention also comprises combustion engines which incorporate the described catalyst.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: October 26, 1999
    Assignee: Fujuyo Ichimura
    Inventor: Shoji Ichimura
  • Patent number: 5972827
    Abstract: Hydrocarbons, e.g., ethylene, are steady-state catalytically oxychlorinated into chlorocarbons, e.g., 1,2-dichloroethane, by fluidizing a fluidizable charge by directing a gaseous feedstream containing a hydrocarbon therethrough and therein oxychlorinating such hydrocarbon, the gaseous feedstream further comprising an oxygen-containing gas and gaseous hydrochloric acid and the fluidizable charge comprising immixture of a catalytically effective amount of an oxychlorination catalyst and particles of a catalytically and chemically inert solid substance, and which further comprises introducing a solution or suspension of a catalytically active copper compound into such fluidized charge during the oxychlorination reaction.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: October 26, 1999
    Assignee: Atochem
    Inventors: Alain Petit, Roland Bachelard, Rene Clair, Yves Correia
  • Patent number: 5965099
    Abstract: 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: Grant
    Filed: December 7, 1998
    Date of Patent: October 12, 1999
    Assignees: Daimler-Benz Aktiengesellschaft, BASF Aktiengesellschaft
    Inventors: Martin Hartweg, Andrea Seibold, Leonhard Walz, Thomas Fetzer, Bernd Morsbach
  • Patent number: 5948726
    Abstract: 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: Grant
    Filed: October 21, 1996
    Date of Patent: September 7, 1999
    Assignee: Project Earth Industries, Inc.
    Inventors: Mark L. Moskovitz, Bryan E. Kepner
  • Patent number: 5885922
    Abstract: Multimetal oxide materials containing molybdenum, vanadium, copper and one or more of the elements tungsten, niobium, tantalum, chromium and cerium and having a multiphase structure, and their use for the preparation of acrylic acid from acrolein by gas-phase catalytic oxidation, and oxometallates of the HT Cu molybdate structure type which contain Cu, Mo and at least one of the elements W, V, Nb and Ta.
    Type: Grant
    Filed: July 24, 1996
    Date of Patent: March 23, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Hartmut Hibst, Andreas Tenten, Laszlo Marosi
  • Patent number: 5885917
    Abstract: A porous lithium aluminate carrier for catalyst has a spinel structure which has a mean pore diameter in the range of 40 to 1,000 angstroms and a total pore volume in the range of 0.2 to 1.5 mL/g. The porous lithium aluminate carrier can be used for supporting a catalyst compound containing a platinum group metal. The catalyst on the carrier can be favorably employed for promoting catalytic reaction of a nitrite ester and carbon monoxide to prepare a carbonate diester such as dimethyl carbonate.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: March 23, 1999
    Assignee: Ube Industries, Ltd.
    Inventors: Kyoji Ohdan, Tokuo Matsuzaki, Mikio Hidaka
  • Patent number: 5853681
    Abstract: Absorbents, suitable for absorbing sulphur compounds such as hydrogen sulphide from gases and liquids, in the form of shaped units having an average size within the range 1-10 mm and containing at least 75% by weight of an absorbent material comprising copper carbonate, basic copper carbonate, and/or copper hydroxide. The units preferably have a bulk density of at least 0.9 kg/l, especially at least 1.2 kg/l. The units are preferably agglomerates containing a small amount of a binder such as a cement and may also contain a proportion of alumina to catalyse hydrolysis of carbon-containing sulphur compounds such as carbonyl sulphide or carbon disulphide.
    Type: Grant
    Filed: September 4, 1996
    Date of Patent: December 29, 1998
    Assignee: Imperial Chemical Industries PLC
    Inventors: Patrick John Denny, Peter John Herbert Carnell, Brian Peter Williams, Cathy Anne Woodroffe, Peter Wood
  • Patent number: 5851947
    Abstract: 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: Grant
    Filed: December 16, 1996
    Date of Patent: December 22, 1998
    Assignee: The Regents of the University of California
    Inventors: Lucy M. Hair, Robert D. Sanner, Paul R. Coronado
  • Patent number: 5849977
    Abstract: A process for the alkylation of alkenes having from 2 to 6 carbon atoms with an alkane having from 4 to 6 carbon atoms to afford an alkylate comprises reacting in the liquid phase the alkene and alkane under alkylation conditions in the presence of a novel catalyst comprising: a) a refractory inorganic oxide, b) the reaction product of a first metal halide and bound surface hydroxyl groups of the refractory inorganic oxide, c) a second metal cation, and d) optionally a zerovalent third metal. The refractory inorganic oxide is selected form the group consisting of alumina, titania, zirconia, chromia, silica, boria, silica-alumina, and combinations thereof and the first metal halide is a fluoride, chloride, or bromide of aluminum or boron. The second metal cation is selected from the group consisting of: monovalent metal cations in an amount from 0.0026 up to about 0.20 gram atoms per 100 grams refractory inorganic oxide for lithium, potassium, cesium, rubidium, silver, and copper, and from 0.012 to about 0.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: December 15, 1998
    Assignee: UOP
    Inventors: Joseph A. Kocal, Anil R. Oroskar
  • Patent number: 5849966
    Abstract: A process and catalyst for isomerizing olefins are disclosed. The process and catalyst are particularly useful for isomerizing alkenyl bridged ring compounds to the corresponding alkyladiene bridged ring compounds. In one embodiment, the isomerization catalyst comprises an oxygen treated mixture of an alkali metal on a dried support having a surface area of 125 to 195 m.sup.2 /g when the support consists essentially of alumina wherein the alumina precursor is a large crystallite pseudoboehmite. The catalyst is particularly useful for isomerizing 5-vinyl-2-norbornene to 5-ethylidiene-2-norbornene. The catalyst is very active and highly selective and resistant to catalyst poisons. The process contacts the catalyst with an alkenyl bridged ring compound and yields the corresponding alkyladiene bridged ring compound.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 15, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Robert Scott Smith, Christopher Lynn Becker
  • Patent number: 5834395
    Abstract: 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: Grant
    Filed: March 11, 1996
    Date of Patent: November 10, 1998
    Assignee: Next Generation Catalyst Research Institute, Co., Ltd.
    Inventor: Takashi Honda
  • Patent number: 5808143
    Abstract: 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: Grant
    Filed: March 22, 1996
    Date of Patent: September 15, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Lothar Karrer, Hans-Peter Neumann, Hans-Dieter Eichhorn, Robin Stuart Jarret
  • Patent number: 5801114
    Abstract: A catalyst which is active and selective for the reduction of nitrogen oxides to molecular nitrogen by reducing agents in a medium which is superstoichiometric in oxidizing agents such as carbon monoxide, hydrogen, hydrocarbons, alcohols and other oxygen-containing organic compounds. The active phase of this catalyst is as follows:at least one inorganic refractory oxide;at least one rare earth element (A);at least one alkaline-earth element (B);at least one platinum group metal (C); andat least one silver or gold metal (D).Impregnation of (C) is advantageously followed by heat treatment in a reducing atmosphere.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: September 1, 1998
    Assignee: Institut Francais du Petrole
    Inventors: Daniel Durand, Gil Mabilon, Nicolas Des Courtils
  • Patent number: 5767039
    Abstract: A process for manufacturing methanol is herein disclosed which comprises the step of reacting hydrogen with carbon monoxide and/or carbon dioxide in the presence of a synthetic catalyst obtainable by mixing, in a slurry state, (a) a beforehand prepared precipitation slurry of copper and zinc, with (b) an alumina precursor separately prepared from a water-soluble aluminum salt and a basic precipitant, to obtain a composition containing copper, zinc and aluminum, and washing, drying and then calcining the composition. A process for manufacturing the above-mentioned catalyst is also disclosed. According to the present invention, methanol can extremely efficiently be manufactured, and the catalyst having a high activity and an excellent heat resistance can also be manufactured.
    Type: Grant
    Filed: April 18, 1996
    Date of Patent: June 16, 1998
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Ken Yamagishi, Yoriko Obata, Yuichi Sugano
  • Patent number: 5759951
    Abstract: Disclosed is a hydrogenation demetalization catalyst with a stabilized alkali metal, havinga). an alumina carrier,b). 0.01-10.2% by weight of an alkali metal,c). 0-3.0% by weight of a Group VIB element, andd). 0-3.0% by weight of a Group VIII element of the periodic table of elements,with a pore volume of 0.4-1.3 ml/g, a surface area of 100-230 m.sup.2 /g, comprising a nonmetallic element selected from the group consisting of P, Si, B and F with the atomic ratio of said nonmetallic element to said alkali metal being 0.5-40.0. Also disclosed is a process for preparing the same.
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: June 2, 1998
    Assignees: Fushun Research Institute of Petroleum and Petrochemicals, China Petro-Chemical Corporation
    Inventors: Yusheng Zhao, Jiahuan Wang, Zhiwu Wang, Xilai Liu, Jingchun Shao, Xiaojing Chen, Wei Li, Shaowu Wang
  • Patent number: 5759939
    Abstract: Finely divided composite materials are provided comprising a first metal oxide (e.g., MgO) at least partially coated with an extremely thin layer of a second metal oxide selected from the group consisting of the transition metal oxides such as Fe.sub.2 O.sub.3. The composites are very effective for the destructive adsorption of undesirable fluids in gaseous or liquid form, such as chlorocarbons and chlorofluorocarbons. In use, a fluid stream including undesirable fluids are contacted with the composites of the invention, such as through the use of a filter containing the composite as a part of the filter media thereof.
    Type: Grant
    Filed: October 6, 1995
    Date of Patent: June 2, 1998
    Assignee: Kansas State University Research Foundation
    Inventors: Kenneth J. Klabunde, Abbas Khaleel
  • Patent number: 5750453
    Abstract: A method for making a synthetic mixed metal oxide or meixnerite which, when activated, has a high B.E.T. surface area, typically about 290 m.sup.2 /g or greater. The method comprises activating hydrotalcite, then cooling and hydrating such activated material with a metal salt solution in a carbon dioxide-free environment. Such hydration can produce a material that absorbs more than 100% of its weight in water. Following hydration, this material is activated a second time in a virtually carbon dioxide-free environment. Such reactivation decomposes the salt and leaves a supported metal oxide readily available to be used for catalyst reactions.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: May 12, 1998
    Assignee: Aluminum Company of America
    Inventors: Michael A. Easley, William E. Horn, Jr.
  • Patent number: 5750455
    Abstract: The invention concerns a catalytic composition resulting from mixing at least one aluminum halide, at least one quaternary ammonium halide and/or at least one amine halohydrate and at least one cuprous compound, preferable a halide. The invention also concerns a process for the alkylation of isoparaffins by olefins with that composition.
    Type: Grant
    Filed: October 24, 1995
    Date of Patent: May 12, 1998
    Assignee: Institut Francais Du Petrole
    Inventors: Yves Chauvin, Andre Hirschauer, Helene Olivier
  • Patent number: 5750460
    Abstract: A catalyst and a process for producing the catalyst are provided. For the catalytic reduction of NO.sub.x and for the oxidation of hydrocarbons, the catalyst contains a spinel containing the metals copper, zinc and aluminum.
    Type: Grant
    Filed: June 16, 1995
    Date of Patent: May 12, 1998
    Assignees: Daimler-Benz AG, BASF Aktiengesellschaft
    Inventors: Martin Hartweg, Martina Heinau, Andrea Seibold, Leonhard Walz, Thomas Fetzer, Bernd Morsbach, Wolfgang Buechele
  • Patent number: 5747410
    Abstract: Nitrogen oxides are removed from an exhaust gas containing nitrogen oxides and oxygen in an amount larger than its stoichiometric amount relative to unburned components in the exhaust gas, by using an exhaust gas cleaner having Ag supported by a porous inorganic oxide body and second catalyst containing second catalytically active components supported by a porous inorganic oxide body. The second catalytically active components consist essentially of Cu and/or other metals such as alkali metal elements, rare earth elements, etc.
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: May 5, 1998
    Assignee: Kabushiki Kaisha Riken
    Inventors: Gyo Muramatsu, Kazuhiko Ogiwara, Kiyohide Yoshida, Akira Abe, Naoko Irite, Shoji Mochida, Katsuji Onai
  • Patent number: 5739075
    Abstract: This invention relates to a process for the preparation of a catalyst suitable for the production of ethylene oxide which process comprises depositing a promoting amount of a salt of a rare earth metal and a promoting amount of a salt of an alkaline earth metal and/or a salt of a Group VIII transition metal on a porous, refractory support, calcining the support, and thereafter depositing a catalytically effective amount of silver, a promoting amount of alkali metal, and optionally, a promoting amount of rhenium and/or a promoting amount of a rhenium co-promoter selected from sulfur, molybdenum, tungsten, chromium, phosphorus, boron and mixtures thereof, on the support, and subsequently drying the support.
    Type: Grant
    Filed: October 6, 1995
    Date of Patent: April 14, 1998
    Assignee: Shell Oil Company
    Inventor: Marek Matusz
  • Patent number: 5739074
    Abstract: A catalytic composite of a refractory inorganic oxide whose bound surface hydroxyl group has reacted with a Friedel-Crafts type metal halide and whose acidity has been modified by the deposition of a monovalent metal cation, especially an alkali metal cation, or alkaline earth metal cation shows superior selectivity and a significantly decreased cracking tendency relative to similar catalysts without the monovalent metal or alkaline earth metal cation. The resulting alkylate from an isobutane-butene feedstock shows a substantial increase in research octane number relative to the alkylate formed by a similar catalyst which has not been so modified by an alkali or alkaline earth metal cation.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: April 14, 1998
    Assignee: UOP
    Inventors: Joseph A. Kocal, Anil R. Oroskar
  • Patent number: 5733839
    Abstract: To prepare a Fischer-Tropsch catalyst, a slurry comprising a particular alumina carrier, water and an active component selected from the group consisting in cobalt (Co), iron (Fe) and mixtures thereof, is subjected to a sub-atmospheric pressure environment. The alumina carrier is thereby impregnated by the active component. The impregnated carrier is dried under a sub-atmospheric pressure environment. The dried impregnated carrier is calcined, thereby to obtain the Fischer-Tropsch catalyst.
    Type: Grant
    Filed: April 2, 1996
    Date of Patent: March 31, 1998
    Assignee: Sastech (Proprietary) Limited
    Inventors: Rafael Luis Espinoza, Jacobus Lucas Visagie, Peter Jacobus Van Berge, Franciscus Hermanus Bolder
  • Patent number: 5733838
    Abstract: A hydrogenation catalyst based on an alloy of aluminum and of a transition metal is prepared by preparing a kneaded material from the alloy and an assistant, converting the kneaded material into moldings, calcining the moldings and treating the calcined moldings with an alkali metal hydroxide, by a process in which the assistant used is(a) polyvinyl alcohol and water or(b) stearic acid,and the catalyst prepared according to the invention is used for hydrogenation and hydrogenolysis, in particular the partial hydrogenation of aliphatic alpha,omega-dinitriles to aliphatic alpha,omega-aminonitriles.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: March 31, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Maximilian Vicari, Klemens Flick, Johann-Peter Melder, Werner Schnurr, Joachim Wulff-Doring
  • Patent number: 5728643
    Abstract: 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: Grant
    Filed: January 24, 1997
    Date of Patent: March 17, 1998
    Assignee: Isuzu Ceramics Research Institute Co., Ltd.
    Inventors: Isao Naitoh, Kazuo Ohsumi
  • Patent number: 5712219
    Abstract: Finely divided composite materials are provided comprising a first metal oxide (e.g., MgO) at least partially coated with an extremely thin layer of a second metal oxide such as Fe.sub.2 O.sub.3. The composites have a high surface area and are very effective for the destructive adsorption of undesirable fluids in gaseous or liquid form, such as chlorocarbons and chlorofluorocarbons. In use, a fluid stream including undesirable fluids are contacted with the composites of the invention, such as through the use of a filter containing the composite as a part of the filter media thereof.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: January 27, 1998
    Assignee: Kansas State University Research Foundation
    Inventors: Kenneth J. Klabunde, Abbas Khaleel
  • Patent number: 5686373
    Abstract: 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: Grant
    Filed: February 22, 1995
    Date of Patent: November 11, 1997
    Assignee: BASF Aktiengesellschaft
    Inventors: Andreas Tenten, Friedrich-Georg Martin, Hartmut Hibst, Laszlo Marosi, Veronika Kohl
  • Patent number: 5670444
    Abstract: Nitrogen oxides are efficiently removed from an exhaust gas containing nitrogen oxides and an excess amount of oxygen, by (i) disposing an exhaust gas cleaner in a flow path of the exhaust gas, the exhaust gas cleaner comprising a first catalyst comprising 0.2-15 weight % (on a metal basis) of at least one silver salt selected from the group consisting of silver halides, silver sulfate and silver phosphate supported on a porous inorganic oxide on an inlet side and a second catalyst comprising (a) 0.
    Type: Grant
    Filed: September 21, 1995
    Date of Patent: September 23, 1997
    Assignee: Kabushiki Kaisha Riken
    Inventors: Kiyohide Yoshida, Gyo Muramatsu, Akira Abe, Naoko Irite
  • Patent number: 5612012
    Abstract: A method for removing CO from a reformed gas includes the steps of treating the reformed gas by a hydrogen purifier to decrease a ratio of the concentration of components other than hydrogen to the concentration of hydrogen so that the ratio may be lower than in the reformed gas, and then converting CO contained in the gas treated by the hydrogen purifier into a gas other than CO. CO can be removed from the reformed gas, and simultaneously high-purity hydrogen can also be obtained, which leads to the increase of a fuel efficiency and the inhibition effect of performance deterioration.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: March 18, 1997
    Assignee: NGK Insulators, Ltd.
    Inventors: Takao Soma, Tomonori Takahashi, Manabu Isomura
  • Patent number: 5580534
    Abstract: The invention provides a catalyst, and a process for preparing the same, for the catalytic reduction of NO.sub.x and for the oxidation of hydrocarbons. The catalyst contains a copper oxide-zinc oxide-aluminum oxide spinel and a zeolitic support material.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: December 3, 1996
    Assignee: Daimler-Benz AG
    Inventors: Martin Hartweg, Martina Heinau, Andrea Seibold, Leonhard Walz
  • Patent number: 5534475
    Abstract: 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: Grant
    Filed: March 2, 1994
    Date of Patent: July 9, 1996
    Assignee: Instituto Mexicano Del Petroleo
    Inventors: Luis E. Miramontes Cardenas, Salavador Castillo Cervantes, Florencia M. Moran Pineda
  • Patent number: 5478789
    Abstract: A hydrogenation reaction catalyst precursor of the present invention comprises a catalyst carrier (A) and a metal oxide composition (B) carried on or mixed with the catalyst carrier (A) at a weight ratio of (B)/(A)=15/85 to 65/35; the catalyst carrier (A) comprising a carrier base material of silica, etc. and a coating of titanium oxide and/or titanium hydroxide, the metal oxide composition (B) comprising copper oxide, zinc oxide, and at least one oxide of a metal selected from the group consisting of an element of group IIa of the periodic table, an element of group IIIb of the table, a lanthanide element, and an actinide element at a weight ratio of 100/(0 to 25)/(0 to 25). A hydrogenation reaction catalyst with a high catalytic activity and a high reaction selectivity is obtained by reduction of the hydrogenation reaction catalyst precursor.
    Type: Grant
    Filed: October 4, 1994
    Date of Patent: December 26, 1995
    Assignee: Kao Corporation
    Inventors: Yasuyuki Hattori, Kiyoshi Tsukada
  • Patent number: 5453412
    Abstract: A copper oxide/zinc oxide/aluminium oxide catalyst which contains, per 100 parts of copper oxide, 40 to 130 parts zinc oxide, 2 to 50 parts aluminium oxide, and 1 to 4 parts soium oxide. It has a total BET surface area of 50 to 100 m.sup.2 /g, and 75% to 95% of the total surface area is made up by pores having radii of 9 to 1000 nm, and 5% to 25% of the total surface area is made up by pores having radii of less than 9 nm. The catalyst is useful for hydrogenation of various organic compounds.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: September 26, 1995
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gregor Deckers, Gerhardt Horn
  • Patent number: 5387570
    Abstract: Applicants have discovered new catalysts based on coprecipitated mixtures or solid solutions of alkaline earth oxides and rare earth oxides, such as mixtures or solid solutions of magnesium oxide and cerium oxide, Mg.sub.5 CeO.sub.x, or magnesium oxide and yttrium oxide, Mg.sub.5 YO.sub.x, which catalyze aldol condensation reactions leading to the selective formation of branched C.sub.4 alcohols. Applicants' catalysts may also contain a Group IB metallic component and further an alkali dopant. Preferably Cu in concentrations at or lower than 30 wt % and K in concentrations at or lower than 3 wt % will be used. Applicants' catalysts afford the advantage of being run at pressures lower than those required by prior art catalysts and are more active and selective to methanol and isobutanol.
    Type: Grant
    Filed: May 7, 1993
    Date of Patent: February 7, 1995
    Assignee: Exxon Research & Engineering Co.
    Inventors: Carlos R. Apesteguia, Stuart L. Soled, Sabato Miseo
  • Patent number: 5382726
    Abstract: The subject invention relates to catalyst compositions for oxychlorination of ethylene to produce 1,2-dichloroethane. The catalysts comprise copper chloride, at least one alkali metal, at least one rare earth metal, and at least one Group IIA metal on a high surface area support for fluid bed applications or on a high or low surface area support for fixed bed applications. The catalyst compositions are prepared by depositing the metals on a support. The use of the catalyst compositions of the invention in the oxychlorination of ethylene to EDC results in high percent ethylene efficiency, high EDC product purity and high percent HCl conversion without exhibiting catalyst stickiness. A process for oxychlorination of ethylene to produce 1,2-dichloroethane is also disclosed.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: January 17, 1995
    Assignee: The Geon Company
    Inventors: George H. Young, Joseph A. Cowfer, Victor J. Johnston
  • Patent number: 5380692
    Abstract: 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: Grant
    Filed: September 11, 1992
    Date of Patent: January 10, 1995
    Assignees: 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
  • Patent number: 5298472
    Abstract: A process for hydrogenating bound oxygen-containing organic feeds into their corresponding alcohols by contact with a coprecipitated copper-aluminum catalyst that has been activated by contact with reducing gas at a temperature that gradually increases.
    Type: Grant
    Filed: December 3, 1992
    Date of Patent: March 29, 1994
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Richard W. Wegman, David R. Bryant
  • Patent number: 5242883
    Abstract: In an exhaust gas disposable catalyst which is a .gamma.-alumina catalyst prepared by sol-gel process, .gamma.-alumina has more than 300 m.sup.2 /g specific surface area and the catalyst element is supported on the .gamma.-alumina and dispersed in pores thereof. The exhaust gas disposable catalyst is obtained by adding the catalyst element as a solution of salt before gelating in sol-gel process.
    Type: Grant
    Filed: September 11, 1992
    Date of Patent: September 7, 1993
    Assignee: Mazda Motor Corporation
    Inventors: Satoshi Ichikawa, Akihide Takami, Hideharu Iwakuni