Of Iron Patents (Class 502/336)
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Publication number: 20020077249Abstract: The present invention relates to a unit suitable for the through-flow of a fluid medium at least partially filled with an adsorbent/catalyst in pellet form consisting essentially of iron oxide and/or iron oxyhydroxides, solidified with oxides and/or (oxy)hydroxides of the elements Al, Mg and Ti, the pellets or granules based on iron oxides and/or iron oxyhydroxides and iron(III) hydroxide for the absorbent/catalyst, and processes for their production and their use.Type: ApplicationFiled: September 25, 2001Publication date: June 20, 2002Inventors: Andreas Schlegel, Jurgen Kischkewitz
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Patent number: 6395675Abstract: A device (catalytic converter) for purifying an exhaust gas. This device has a first catalyst for purifying a NOx of the exhaust gas. This first catalyst contains first and second powders. The first powder has a porous carrier and at least one noble metal loaded on the porous carrier. The at least one noble metal is selected from platinum, palladium and rhodium. The second powder has a first double oxide represented by the general formula (Ln1-&agr;A&agr;)1-&bgr;BO&dgr; where &agr; is a number that is greater than 0 and less than 1, &bgr; is a number that is greater than 0 and less than 1, &dgr; is a number that is greater than 0, Ln is at least one first element selected from La, Ce, Nd and Sm, A is at least one second element selected from Mg, Ca, Sr, Ba, Na, K and Cs, and B is at least one third element selected from Fe, Co, Ni and Mn. The device is improved in capability of purifying NOx contained in an oxygen rich exhaust gas.Type: GrantFiled: March 8, 1999Date of Patent: May 28, 2002Assignee: Nissan Motor Co., Ltd.Inventors: Katsuo Suga, Masanori Nakamura
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Patent number: 6391821Abstract: An oxidation catalyst according to the present invention is prepared, for example, by heat processing a gold compound at 150° C. to 80° C., yielding ultrafine gold particles, which are then mixed with a palladium compound and a compound containing at least one element selected from the group consisting of alkaline metals and the elements of Groups IIA, IIIA, VIA, IIB, VB, and VIII of the Periodic Table. By an oxidation reaction between a benzyl compound such as p-xylene and a carboxylic acid such as acetic acid in the presence of oxygen and the oxidation catalyst prepared as above, a benzyl ester such as p-methylbenzyl acetate or p-xylylene diacetate can be produced. Consequently, it is possible to provide an oxidation catalyst suitable for use in industrially producing the foregoing benzyl esters, a method of preparing the foregoing oxidation catalyst, and a method of producing the foregoing benzyl esters efficiently and at low cost.Type: GrantFiled: June 16, 1999Date of Patent: May 21, 2002Assignee: Nippon Shokubai Co., Ltd.Inventors: Yuuichi Satoh, Jun Tatsumi, Toshiya Iida, Toshio Hayashi
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Patent number: 6383974Abstract: Hydrorefining catalyst contains 0.1 to 25 wt % in total of at least one hydrogenation active metal element selected from elements of Group 6, Group 8, Group 9, and Group 10 of the Periodic Table, and 0.1 to 3 wt % potassium on a carrier formed of porous inorganic oxide. The concentration distribution of the hydrogenation active metal element is higher in the central part than in the peripheral part of the catalyst, and the concentration distribution of potassium is higher in the peripheral part than in the central part of the catalyst. The pores on the outside surface of the catalyst are not plugged by the metal content of hetero compounds and hetero compounds can be efficiently diffused to inside the catalyst. As a result, long-term retention of a state of high activity is possible.Type: GrantFiled: February 25, 2000Date of Patent: May 7, 2002Assignee: Japan Energy CorporationInventors: Katsuaki Ishida, Ryutaro Koide, Koichi Matsushita
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Publication number: 20020052289Abstract: This invention provides a process for producing hydrocarbons. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons, and uses a catalyst including (a) at least one catalytic metal for Fischer-Tropsch reactions (e.g., iron, cobalt, nickel and/or ruthenium) and (b) a non-layered mesoporous support which exhibits an X-ray diffraction after calcination that has at least one peak at a d-spacing of greater than 18 Ångstrom units.Type: ApplicationFiled: November 16, 2001Publication date: May 2, 2002Inventors: Leo E. Manzer, Stephan Schwarz
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Publication number: 20020035035Abstract: Thermostable metal oxide catalysts of the general formula ABMO3−&dgr;, having a perovskite crystal structure and the process of making the same. A, B and M are metal cations. M acts as a doping of site B in an amount of about 0.01 to about 0.30. Cations A, B and M are so chosen as to assure a depletion in oxygen represented by &dgr; of at least 0.02. The catalysts according to the present invention show good catalytic properties even at temperatures above 1300 ° C.Type: ApplicationFiled: June 18, 2001Publication date: March 21, 2002Inventors: Jitka Kirchnerova, Danilo Klvana
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Patent number: 6346228Abstract: The present invention relates to a novel hydrophobic multicomponent catalyst useful in the direct oxidation of hydrogen to hydrogen peroxide and to a method for the preparation of such catalyst. More specifically, this invention relates to a novel hydrophobic muticomponent catalyst comprising a hydrophobic polymer membrane deposited on a Pd containing acidic catalyst, useful for the direct oxidation of hydrogen by oxygen to hydrogen peroxide, an a method for preparing the same.Type: GrantFiled: January 19, 2000Date of Patent: February 12, 2002Assignee: Council of Scientific and Industrial ResearchInventors: Vasant Ramchandra Choudhary, Subhash Dwarkanath Sansare, Abaji Govind Gaikwad
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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: 20020010087Abstract: Skeletal iron catalysts are prepared and utilized for producing synthetic hydrocarbon products from CO and H2 feeds by Fischer-Tropsch synthesis process. Iron powder is mixed with aluminum, antimony, silicon, tin or zinc powder and 0.01-5 wt. % metal promotor powder to provide 20-80 wt. % iron content, then melted together, cooled to room temperature and pulverized to provide 0.1-10 mm iron alloy catalyst precursor particles. The iron alloy precursor particles are treated with NaOH or KOH caustic solution at 30-95° C. to extract or leach out a major portion of the non-ferrous metal portion from the iron and provide the skeletal iron catalyst material. Such skeletal iron catalyst is utilized with CO+H2 feedstream in either fixed bed or slurry bed type reactor at 200-350° C. temperature, 1.0-3.0 mPa pressure and gas hourly space velocity of 0.5-3.0 L/g Fe/h to produce desired hydrocarbon products.Type: ApplicationFiled: July 2, 2001Publication date: January 24, 2002Inventors: Jinglai Zhou, Yijun Lu, Zhixin Zhang, Guohui Li, Linyao Dong, Hairong Wang, Peizheng Zhou, Lap-Keung Lee
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Patent number: 6338830Abstract: 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: March 31, 1999Date of Patent: January 15, 2002Assignee: Apyron Technologies, Inc.Inventors: Mark L. Moskovitz, Bryan E. Kepner
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Patent number: 6337129Abstract: Disclosed is a member having an antifouling surface on which the so-called “stains,” such as deposits and contaminants, are less likely to be deposited. The surface of the member has both a hydrophobic portion, and a hydrophilic portion induced by a photocatalyst, the hydrophobic portion and the hydrophilic portion being present in a microscopically dispersed and exposed state on the surface. More specifically, according to a first aspect of the present invention, there is provided a member comprising: a substrate; and a surface layer provided on the substrate, the surface layer comprising a photocatalytic oxide, a silicone resin or silica, and a water-repellent fluororesin, the silicone or silica and the water-repellent fluororesin being present in a microscopically dispersed and exposed state on the outermost surface of the surface layer.Type: GrantFiled: November 30, 1998Date of Patent: January 8, 2002Assignee: Toto Ltd.Inventors: Toshiya Watanabe, Makoto Hayakawa, Mitsuyoshi Machida
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Publication number: 20010049338Abstract: The present invention provides a method by which a highly active catalyst for the steam reforming of methanol is efficiently produced by a simple process. The catalyst is produced from alloy fine particles obtained by first grinding an Al alloy containing quasi-crystals consisting of aluminum, copper and at least one metal atom selected from Fe, Ru and Os, and then leaching the ground Al alloy.Type: ApplicationFiled: March 30, 2001Publication date: December 6, 2001Inventors: Masatoshi Yoshimura, Yuzuru Takahashi, An-pang Tsai
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Patent number: 6303538Abstract: The present invention discloses metallic fiber boards having catalytic functionality and processes for producing the same. The boards are formed from a mesh of metallic fibers, each fiber having a first layer of an oxide and a second layer of a porous oxide. A catalyst, either disposed on the surface of the second layer, or dispersed within the second layer, provides catalytic functionality to the fiber board. The first layer is produced by thermal oxidation of the metallic fibers, while the second layer and catalyst are produced by thermal decomposition of precursor materials applied to the fiber board while in solution, typically as a spray of atomized droplets. The resulting boards are used to catalyze the combustion of hydrocarbons, especially methane, and particularly in household boilers.Type: GrantFiled: June 2, 1999Date of Patent: October 16, 2001Assignee: Saes Getters S.p.A.Inventors: Luca Toia, Claudio Boffito, Vittorio Ragaini, Stefania Vitali, Claudia L. Bianchi
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Patent number: 6281164Abstract: The useful life of SOx additives having a SO2→SO3 oxidation catalyst component and a SO3 absorption component can be extended by employing each of these components as separate and distinct physical particles, pellets, etc.Type: GrantFiled: February 2, 2000Date of Patent: August 28, 2001Assignee: Intercat-Savannah, Inc.Inventors: Edward J. Demmel, Albert A. Vierheilig, Regis B. Lippert
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Patent number: 6277895Abstract: Particulate skeletal iron catalyst is provided which contain at least about 50 wt. % iron with the remainder being a minor portion of a suitable non-ferrous metal and having characteristics of 0.062-1.0 mm particle size, 20-100 m2/g surface area, and 10-40 nm average pore diameter. Such skeletal iron catalysts are prepared and utilized for producing synthetic hydrocarbon products from CO and H2 feeds by Fischer-Tropsch synthesis process. Iron powder is mixed with non-ferrous powder selected from aluminum, antimony, silicon, tin or zinc powder to provide 20-80 wt. % iron content and melted together to form an iron alloy, then cooled to room temperature and pulverized to provide 0.1-10 mm iron alloy catalyst precursor particles. The iron alloy pulverized particles are treated with NaOH or KOH caustic solution at 30-95° C.Type: GrantFiled: September 21, 1999Date of Patent: August 21, 2001Assignee: Hydrocarbon Technologies, Inc.Inventors: Peizheng Zhou, Lap-Keung Lee, Jinglai Zhou, Yijun Lu, Guohui Li
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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: 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: 6265342Abstract: A catalyst for purifying exhaust gases from diesel engines with an improved purification efficiency for both nitrogen oxide and particulates in exhaust emissions is provided. The catalyst includes: (i) a first catalytic layer containing a carrier portion including iron (Fe)-doped modified zirconium dioxide, and a catalyst portion including a material selected from the group consisting of copper (Cu), copper oxide, and mixtures thereof, and (ii) a second catalytic layer containing a carrier portion including Cu-doped modified zirconium dioxide, a main catalyst portion including platinum (Pt) and tin (Sn), and a co-catalyst portion including copper oxide. The catalyst portion of the first catalytic layer may contain palladium (Pd) instead of Cu.Type: GrantFiled: March 6, 2000Date of Patent: July 24, 2001Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Chang-bin Lim, Chan-ho Pak, Ju-hee Cho
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Patent number: 6265451Abstract: Skeletal iron catalysts are prepared and utilized for producing hydrocarbon products from CO and H2 feeds by Fischer-Tropsch synthesis process. Iron powder is mixed with aluminum, antimony, silicon, tin or zinc powder and 0.01-5 wt % metal promotor powder to provide 20-80 wt % iron content, then melted together, cooled to room temperature and pulverized to provide 0.1-10 mm iron alloy catalyst precursor particles. The iron alloy precursor particles are treated with NaOH or KOH caustic solution at 30-95° C. to extract or leach out a major portion of the non-ferrous metal portion from the iron, and then dried and reduced under hydrogen atmosphere to provide the skeletal iron catalyst material. Such skeletal iron catalyst is utilized with CO+H2 feedstream in either fixed bed or slurry bed type reactor at 200-350° C. temperature, 1.0-3.0 mPa pressure and gas hourly space velocity of 0.5-3.0 L/g Fe/h to produce desired hydrocarbon products.Type: GrantFiled: September 21, 1999Date of Patent: July 24, 2001Assignee: Hydrocarbon Technologies, Inc.Inventors: Jinglai Zhou, Yijun Lu, Zhixin Zhang, Guohui Li, Linyao Dong, Hairong Wang, Peizheng Zhou, Lap-Keung Lee
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Patent number: 6248688Abstract: The present invention relates to a zirconium, rare earth containing composition comprising zirconium, cerium, neodymium and praseodymium components and the use of this composition in a catalyst composition useful for the treatment of gases to reduce contaminants contained therein and method process to make the catalyst composition. The catalyst has the capability of substantially simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides.Type: GrantFiled: January 28, 1999Date of Patent: June 19, 2001Assignee: Engelhard CorporationInventors: Joseph H. Z. Wu, Mukaram K. Syed
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Patent number: 6235677Abstract: A process is disclosed for producing hydrocarbons by contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons. The process is characterized by using a catalyst prepared by a method involving (1) forming a catalyst gel by destabilizing an aqueous colloid comprising (a) at least one catalytic metal for Fischer-Tropsch reactions (e.g., iron, cobalt, nickel and/or ruthenium), (b) colloidal cerium oxide, zirconium oxide, titanium oxide and/or aluminum oxide, and optionally (c) Al(OR)3, Si(OR)4, Ti(OR)4 and/or Zr(OR)4 where each R is an alkyl group having from 1 to 6 carbon atoms; and (2) drying the gel.Type: GrantFiled: August 18, 1999Date of Patent: May 22, 2001Assignee: Conoco Inc.Inventors: Leo E. Manzer, Kostantinos Kourtakis
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Patent number: 6235678Abstract: A catalyst composition for oxidative dehydrogenation of paraffinic hydrocarbons and other compounds having at least two adjacent carbon atoms each having at least one hydrogen atom. The catalyst composition is represented by the formula AaBbSbcVdAleOx wherein A is an alkali or alkaline earth metal; B is one or more optional elements selected from zinc, cadmium, lead, nickel, cobalt, iron, chromium, bismuth, gallium, niobium, tin and neodymium; a is 0 to 0.3, b is 0 to 5, c is 0.5 to 10, d is 1, e is 3 to 10, 7≦a+b+c+d+e≦25, and x is determined by the valence requirements of the elements present. A process for the oxidative dehydrogenation of paraffins using the catalyst composition.Type: GrantFiled: June 11, 1999Date of Patent: May 22, 2001Assignee: Saudi Basic Industries CorporationInventors: Edouard A. Mamedov, Shahid N. Shaikh
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Patent number: 6165932Abstract: The invention is a sol-gel processed metal-aluminum based oxide material useful as a catalyst including a NOx trapping catalyst. It is made from alkoxides comprising heterometallic alkoxides. The metal is transition metal, one or both of alkali metal and alkaline earth metal, and optionally also a lanthanide. Then invention is also a method of treating lean-burn internal combustion engine exhaust gas with this material, without any precious metal included with the material, in the exhaust gas system. The method comprises locating the NOx trap in the system where the NOx trap absorbs nitrogen oxides during lean cycle operation and desorbs the nitrogen oxides when the concentration of the oxygen in the exhaust gas is lowered as during a rich or stoichiometric cycle.Type: GrantFiled: January 11, 1999Date of Patent: December 26, 2000Assignee: Ford Global Technologies, Inc.Inventor: Chaitanya Kumar Narula
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Patent number: 6121188Abstract: 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: GrantFiled: October 15, 1997Date of Patent: September 19, 2000Assignee: BASF AktiengesellschaftInventors: Boris Breitscheidel, Uwe Diehlmann, Thomas Ruhl, Sabine Weiguny
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Patent number: 6087298Abstract: The present invention relates to an exhaust gas treatment catalytic article having an upstream catalytic zone and at least one downstream catalytic zone. The upstream catalytic zone has an upstream composition which has a first upstream support, and at least one first upstream palladium component. The upstream zone can have one or more layers. The downstream catalytic zone has a first downstream layer which has a first downstream support and a first downstream precious metal component. A second downstream layer has a second downstream support and a second downstream precious metal component.Type: GrantFiled: May 14, 1996Date of Patent: July 11, 2000Assignee: Engelhard CorporationInventors: Shiang Sung, Harold N. Rabinowitz, Rudolf M. Smaling
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Patent number: 6087294Abstract: Particulate metal oxide compositions having reactive atoms stabilized on particulate surfaces and methods for reacting the compositions with saturated and unsaturated species are provided. The preferred particulate metal oxides of the compositions are nanocrystalline MgO and CaO with an average crystallite size of up to about 20 nm. The preferred reactive atoms of the compositions are atoms of the halogens and Group IA metals. In one embodiment, chlorine atoms are stabilized on the surface of nanocrystalline MgO thus forming a composition which is capable of halogenating compounds, both saturated and unsaturated, in the absence of UV light and elevated reaction temperatures.Type: GrantFiled: August 12, 1998Date of Patent: July 11, 2000Assignee: Kansas State University Research FoundationInventors: Kenneth J. Klabunde, Naijian Sun
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Patent number: 6080699Abstract: A heterogeneous massive catalyst is disclosed which comprises: at least one catalytically active component in the form of solid particles and at least one catalytically inert component in the form of solid particles wherein the components are dispersed in one another, wherein the inert component has a mean particle diameter greater than the mean particle diameter of the catalytically active component, and wherein the particles of the catalytically active material are grown on the particles of the catalytically inert material as well as a process for preparing the catalyst.Type: GrantFiled: September 1, 1998Date of Patent: June 27, 2000Inventor: Joachim Pohl
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Patent number: 6074984Abstract: The useful life of SO.sub.X additives having a SO.sub.2 .fwdarw.SO.sub.3 oxidation catalyst component and a SO.sub.3 absorption component can be extended by employing each of these components as separate and distinct physical particles, pellets, etc.Type: GrantFiled: September 3, 1997Date of Patent: June 13, 2000Assignee: Bulldog Technologies U.S.A., Inc.Inventors: Edward J. Demmel, deceased, Albert A. Vierheilig, Regis B. Lippert
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Patent number: 6060423Abstract: A catalyst suitable for partially hydrogenating aromatic olefins to cyclohexene is disclosed. The catalyst is composed on a metallic active component deposited on a bi-oxide of gallium oxide-zinc oxide, and the metallic active component is selected from group VIII of the period table. The characteristic of the catalyst comprises a higher selectivity and yield in preparing cyclohexene.Type: GrantFiled: April 23, 1999Date of Patent: May 9, 2000Assignee: Chinese Petroleum CorporationInventors: Yu-Wen Chen, Sung-Cheng Hu
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Patent number: 6060420Abstract: 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: GrantFiled: September 29, 1995Date of Patent: May 9, 2000Assignee: Nissan Motor Co., Ltd.Inventors: Fumio Munakata, Hiroaki Kaneko, Takeshi Miyamoto
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Patent number: 6048821Abstract: The useful life of SO.sub.X additives having a SO.sub.2 .fwdarw.SO.sub.3 oxidation catalyst component and a SO.sub.3 absorption component can be extended by employing each of these components as separate and distinct physical particles, pellets, etc., with each component having large proportions of certain ingredients and having small proportions of certain other ingredients.Type: GrantFiled: November 18, 1996Date of Patent: April 11, 2000Assignee: Bulldog Technologies U.S.A., Inc.Inventors: Edward J. Demmel, Albert A. Vierheilig, Regis B. Lippert
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Patent number: 6043187Abstract: The present invention relates to a catalyst comprising an extruded essentially alumina-based support, constituted by a plurality of juxtaposed agglomerates and partially in the form of packs of flakes and partially in the form of needles, and optionally comprising at least one catalytic metal or a compound of a catalytic metal from group VIB, and/or optionally at least one catalytic metal or compound of a catalytic metal from group VIII. The invention also relates to its use in a fixed bed reactor, for hydrorefining and hydroconverting hydrocarbon feeds.Type: GrantFiled: June 10, 1998Date of Patent: March 28, 2000Assignee: Institut Francais du PetroleInventors: Virginie Harle, Slavik Kazstelan, Frederic Morel, Stephane Kressmann, Philippe Courty
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Patent number: 6034032Abstract: The invention herein relates to a catalyst for enhancing the conversion of the dehydrogenation reaction of aromatic hydrocarbons such as ethylbenzene under a flow of carbon dioxide, which is expressed by the following formula I, wherein a catalyst in which an active component of iron oxides is highly dispersed onto a zeolite, activated charcoal, .gamma.-alumina or silica carrier. Further, the invention relates to a dehydrogenation method of aromatic hydrocarbons by means of using said catalyst:(Fe.sup.II.sub.x Fe.sup.III.sub.y O.sub.z)/S (I)wherein S denotes a zeolite, activated charcoal, .gamma.-alumina or silica carrier, and the initial state of iron oxide is as follows:x=0.Type: GrantFiled: September 30, 1998Date of Patent: March 7, 2000Assignee: Korea Reserarch Institute of Chemical TechnologyInventors: Sang-Eon Park, Jong-San Chang, Yong Ki Park, Min Seok Park, Chul Wee Lee, Jermim Noh
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Patent number: 6020285Abstract: Shaped particles suitable for use as a catalyst, or precursor thereto, particularly for the decomposition of hypohalite ions in aqueous solution, comprising a high alumina cement having an aluminium to calcium atomic ratio above 2.5 and at least one oxide of a Group VIII metal M selected from nickel and cobalt, said particles containing 10 to 70% by weight of said Group VIII metal oxide and having a porosity in the range of 30 to 60%, in which at least 10% of the pore volume is in the form of pores of size in the range 15 to 35 nm and less than 65% of the pore volume is in the form of pores of diameter greater then 35 nm are disclosed.Type: GrantFiled: January 22, 1998Date of Patent: February 1, 2000Assignee: Imperial Chemical Industries PLCInventor: Frederick Ernest Hancock
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Patent number: 6017844Abstract: A catalyst composition and a process for using of the catalyst composition in a hydrocarbon conversion process are disclosed. The composition comprises an inorganic support, a Group VA metal or metal oxide, and optionally a Group IVA metal or metal oxide and a Group VIII metal or metal oxide. The process comprises contacting a fluid which comprises at least one saturated hydrocarbon with the catalyst composition under a condition sufficient to effect the conversion of the hydrocarbon to an olefin. Also disclosed is a process for producing the catalyst composition.Type: GrantFiled: December 11, 1998Date of Patent: January 25, 2000Assignee: Phillips Petroleum CompanyInventors: An-hsiang Wu, Charles A. Drake
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Patent number: 5990038Abstract: The invention relates to a first catalyst for purifying an exhaust gas. The first catalyst has a substrate and a catalytic coating formed thereon. This catalytic coating has first and second grains. The first grain includes a porous carrier supporting thereon at least one of palladium and rhodium. The second grain includes a double oxide supporting thereon at least one of platinum and palladium. This double oxide is represented by a formula of (La.sub.1-x A.sub.x).sub.1-.alpha. BO.sub..delta. where A is at least one element selected from barium, potassium and cesium, B is at least one of iron, cobalt, nickel and manganese, 0<X<1, 0<.alpha.<0.2, and .delta. is a number such that a net electric charge of the first double oxide becomes zero. The invention further relates to a second catalyst similar to the first catalyst. The first grain of the second catalyst includes a porous carrier supporting thereon at least one of platinum, palladium, rhodium and iridium.Type: GrantFiled: February 23, 1998Date of Patent: November 23, 1999Assignee: Nissan Motor Co., Ltd.Inventors: Katsuo Suga, Toru Sekiba
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Patent number: 5985790Abstract: 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 400.degree. C. to 700.degree. 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.Type: GrantFiled: October 21, 1996Date of Patent: November 16, 1999Assignee: Project Earth Industries, Inc.Inventors: Mark L. Moskovitz, Bryan E. Kepner
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Patent number: 5965481Abstract: The invention involves the production of a catalyst that contains (1) at least one refractory inorganic oxide support, (2) at least one iron oxide, and (3) at least one cerium oxide, (4) at least one metal A, for example, from Groups VIB, VIIB, VIII, and IB of the Periodic System and, optionally (5) at least one compound of metal B, for example, from Groups IA, IIA, the rare-earths group, and Group IVB of the Periodic System, deposited in the form of a porous layer ("washcoat") on a ceramic or metal substrate:(a) atomizing an aqueous suspension of at least one powder of the refractory inorganic oxide, cerium salt, iron salt, and optionally salt of the metal B; and/or A(b) resuspending the resultant powder and adding any remainder or all of the compound of metal B, as well as, optionally at least one bonding agent and, optionally at least one mineral acid or organic acid;(c) coating a ceramic or metal substrate is coated with the suspension obtained in step (b);(d) calcining the resultant coated substrate;(e)Type: GrantFiled: August 16, 1994Date of Patent: October 12, 1999Assignee: Institut Francais du PetroleInventors: Daniel Durand, Gil Mabilon, Isabelle Guibard
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Patent number: 5958825Abstract: A catalyst comprising, based on the total weight of the catalyst,more than 6-50% by weight of cobalt, nickel or a mixture thereof,0.001-25% by weight of ruthenium,0-10% by weight of copper and0-5% by weight of promoterson a porous metal oxide carrier can be prepared by(a) impregnating the carrier with the metals, promoters or compounds thereof,(b) drying and calcining the impregnated carrier and(c) reducing the calcined carrier in a stream of hydrogen,carrier not being impregnated with halogen compounds.Type: GrantFiled: October 21, 1997Date of Patent: September 28, 1999Assignee: BASF AktiengesellschaftInventors: Joachim Wulff-Doring, Johann-Peter Melder, Gerhard Schulz, Guido Voit, Frank Gutschoven, Wolfgang Harder
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Patent number: 5952540Abstract: This invention relates to a process for preparing hydrocarbons, in particular hydrogenation of carbon dioxide over Fe-K/Al.sub.2 O.sub.3 catalyst, which is reduced in hydrogen and activated in the mixture of carbon dioxide and hydrogen.Type: GrantFiled: January 26, 1998Date of Patent: September 14, 1999Assignee: Korea Research Institute of Chemical TechnologyInventors: Kyu Wan Lee, Myoung Jae Choi, Ki Won Jun, Pyoung Ho Choi, Soo Jae Lee
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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: 5948722Abstract: A method for preparing an acid catalyst having a long shelf-life is provided comprising doping crystalline iron oxides with lattice-compatible metals and heating the now-doped oxide with halogen compounds at elevated temperatures. The invention also provides for a catalyst comprising an iron oxide particle having a predetermined lattice structure, one or more metal dopants for said iron oxide, said dopants having an ionic radius compatible with said lattice structure; and a halogen bound with the iron and the metal dopants on the surface of the particle.Type: GrantFiled: October 14, 1997Date of Patent: September 7, 1999Assignee: The United States of America as represented by the United States Department of EnergyInventors: Malvina Farcasiu, Phillip B. Kaufman, J. Rodney Diehl, Hendrik Kathrein
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Patent number: 5898014Abstract: The present invention relates to a zirconium, rare earth containing composition comprising zirconium, cerium, neodymium and praseodymium components and the use of this composition in a catalyst composition useful for the treatment of gases to reduce contaminants contained therein and method process to make the catalyst composition. The catalyst has the capability of substantially simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides.Type: GrantFiled: September 27, 1996Date of Patent: April 27, 1999Assignee: Engelhard CorporationInventors: Joseph H. Z. Wu, Shiang Sung, Zhicheng Hu, John J. Steger
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Patent number: 5885923Abstract: An exhaust gas cleaner consisting essentially of a first catalyst consisting essentially of a first porous inorganic oxide supporting 1.6-8.7 weight percent of an Ag component, on a metal basis, and a second catalyst consisting essentially of a second porous inorganic oxide supporting 0.1-3.8 weight percent of a Pt component and 1-9.9 weight percent of a W component, each weight percent on a metal basis. The Ag component includes Ag or a compound thereof. The Pt component includes Pt, Pd, Ru, Rh, Ir, and Au. The W component includes W, V, Mn, Mo, Nb, and Ta.Type: GrantFiled: May 7, 1998Date of Patent: March 23, 1999Assignee: Kabushiki Kaisha RikenInventors: Kiyohide Yoshida, Gyo Muramatsu, Satoshi Sumiya
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Patent number: 5885922Abstract: 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: GrantFiled: July 24, 1996Date of Patent: March 23, 1999Assignee: BASF AktiengesellschaftInventors: Hartmut Hibst, Andreas Tenten, Laszlo Marosi
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Patent number: 5863856Abstract: A process for the preparation of a catalyst useful for conducting carbon monoxide hydrogenation reactions, especially a Fischer-Tropsch catalyst, use of the catalyst for conducting such reactions, especially Fischer-Tropsch reactions, and the composition produced by said process. In the preparation of the catalyst, a solution of a multi-functional carboxylic acid having from about 3 to 6 total carbon atoms, preferably about 4 to 5 total carbon atoms, is employed to impregnate and disperse a compound or salt of rhenium and a compound or salt of a catalytic metal, or metals, e.g., copper or an Iron Group metal such as iron, cobalt, or nickel onto a refractory inorganic oxide support, e.g., titania. The rhenium, which need be present only in small amount permits full and complete reduction of the catalytic metal, or metals, dispersed by the acid.Type: GrantFiled: April 22, 1997Date of Patent: January 26, 1999Assignee: Exxon Research and Engineering CompanyInventor: Charles H. Mauldin
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Patent number: 5856261Abstract: A process for the preparation of a catalyst useful for conducting carbon monoxide conversion reactions, especially a Fischer-Tropsch catalyst, use of the catalyst for conducting such reactions, especially Fischer-Tropsch reactions, and the composition produced by said process. In the preparation of the catalyst, a solution of a carbohydrate, or sugar, notably a monosaccharide or disaccharide, particularly sucrose, is employed to impregnate and disperse a compound or salt of a catalytic metal, or metals, e.g., copper or an Iron Group metal such as iron, cobalt, or nickel, or in a preferred embodiment both a compound or salt of rhenium and a compound or salt of a catalytic metal, or metals, e.g., copper or an Iron Group metal such as iron, cobalt, or nickel, onto a refractory inorganic oxide support, e.g., titania. The rhenium, when present only in small amount permits full and complete reduction of the catalytic metal, or metals, dispersed by the carbohydrate.Type: GrantFiled: April 22, 1997Date of Patent: January 5, 1999Assignee: Exxon Research and Engineering CompanyInventors: Claude C. Culross, Charles H. Mauldin
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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: 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: 5789339Abstract: The present invention generally relates to supported perovskites and their use for low temperature oxidation of volatile oxygen-containing organic compounds, particularly alcohols. The present invention further relates to the use of supported perovskites to reduce the amount of oxygen-containing organic compounds present in waste gases produced by processes such as baking or brewing.Type: GrantFiled: June 7, 1995Date of Patent: August 4, 1998Assignee: W. R. Grace & Co.-Conn.Inventors: Michael S. Ziebarth, Cristian Libanati, Mohit Uberoi