Of Group Viii (i.e., Iron Or Platinum Group) Patents (Class 502/185)
  • Patent number: 6967185
    Abstract: A noble metal sulfide catalyst obtained by reaction of a precursor of at least one noble metal with a thionic species in an aqueous environment essentially free of sulfide ions useful as an electrocatalyst in the depolarized electrolysis of hydrochloric acid.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: November 22, 2005
    Assignee: De Nora Elettrodi S.p.A.
    Inventors: Robert J. Allen, Andrea F. Gulla
  • Patent number: 6967183
    Abstract: Electrocatalyst powders and methods for producing electrocatalyst powders, such as carbon composite electrocatalyst powders. The powders have a well-controlled microstructure and morphology. The method includes forming the particles from an aerosol of precursors by heating the aerosol to a relatively low temperature, such as not greater than about 400° C.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: November 22, 2005
    Assignee: Cabot Corporation
    Inventors: Mark J. Hampden-Smith, Toivo T. Kodas, Plamen Atanassov, Klaus Kunze, Paul Napolitano, Rimple Bhatia, David E. Dericotte, Paolina Atanassova
  • Patent number: 6962892
    Abstract: A metallic catalytic particle for producing single-walled carbon nanotubes. The catalytic particles contain at least one metal from Group VIII, including for example Co, Ni, Ru, Rh, Pd, Ir, and Pt, and at least one metal from Group VIb including for example Mo, W and Cr. The metal component is on a support such as silica.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: November 8, 2005
    Inventors: Daniel E. Resasco, Boonyarach Kitiyanan, Jeffrey H. Harwell, Walter Alvarez
  • Patent number: 6958308
    Abstract: A method for producing dispersed metal particles on a substrate and the compositions produced is disclosed. A method for producing the particles comprises exposing an organometallic and a particulate substrate to supercritical or near supercritical fluid under conditions to form a mixture of the fluid and the organometallic, allowing the mixture to remain in contact with the substrate for a time sufficient to deposit dispersed organometallic onto the substrate, venting the mixture, thereby adsorbing the organometallic onto the substrate, and reducing the dispersed organometallic to dispersed metal particles with a reducing agent.
    Type: Grant
    Filed: March 16, 2004
    Date of Patent: October 25, 2005
    Assignee: Columbian Chemicals Company
    Inventor: Garth Desmond Brown
  • Patent number: 6956005
    Abstract: An improved catalyst comprising a noble metal and tellurium at the surface of a carbon support is provided. Also provided are novel methods for preparing such catalysts and novel processes for the use of such catalysts in liquid phase oxidation reactions, particularly the oxidation of N-(phosphonomethyl)iminodiacetic acid or a salt thereof.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: October 18, 2005
    Assignee: Monsanto Technology LLC
    Inventor: Mark A. Leiber
  • Patent number: 6936565
    Abstract: Compositions including modified carbide-containing nanorods and/or modified oxycarbide-containing nanorods and/or modified carbon nanotubes bearing carbides and oxycarbides and methods of making the same are provided. Rigid porous structures including modified oxycarbide-containing nanorods and/or modified carbide containing nanorods and/or modified carbon nanotubes bearing modified carbides and oxycarbides and methods of making the same are also provided. The compositions and rigid porous structures of the invention can be used either as catalyst and/or catalyst supports in fluid phase catalytic chemical reactions. Processes for making supported catalyst for selected fluid phase catalytic reactions are also provided.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: August 30, 2005
    Assignee: Hyperion Catalysis International, Inc.
    Inventors: Jun Ma, David Moy
  • Patent number: 6921604
    Abstract: A device and a method for simply and accurately evaluating-performance of fuel cells have been provided. Hydrogen gas and carbon monoxide gas are caused to flow into a sample holder where an electrode catalyst sample is laid, and the amount of carbon monoxide gas discharged therefrom is detected. The amount of carbon monoxide gas adsorbed by the electrode catalyst sample is calculated based on the amount of supplied carbon monoxide gas and the amount of detected carbon monoxide gas. The output voltage of a fuel cell is calculated based on a correlation between calculated amounts of carbon monoxide gas adsorbed by the electrode catalyst and output voltages of the fuel cell.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: July 26, 2005
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hisao Kato, Tatsuya Kawahara, Toshiaki Ozaki
  • Patent number: 6919065
    Abstract: A particulate supported noble metal phase-controlled catalyst material having 5-1000 ?m surface area of 50?500 m2/gm is provided for use in direct catalytic production of hydrogen peroxide (H2O2) product from hydrogen and oxygen-containing feedstreams. The catalyst is made by depositing phase controlled crystals of a noble metal such as palladium on a suitable particulate support material such as carbon black, by utilizing a precursor solution of the metal and a suitable control ionic polymer having molecular weight of 300-8000 such as sodium polyacrylate in a selected metal to polymer molar ratio of 1:0.1 to 1:10, which procedure provides desired phase control of the noble metal atoms to form widely dispersed minute noble metal crystals on the support material. The invention includes methods for making the catalyst, and also a process for utilizing the catalyst to directly produce high yields of hydrogen peroxide (H2O2) product from hydrogen and oxygen-containing gaseous feedstreams.
    Type: Grant
    Filed: May 7, 2003
    Date of Patent: July 19, 2005
    Assignee: Hydrocarbon Technologies, Inc.
    Inventors: Bing Zhou, Lap-Keung Lee
  • Patent number: 6916574
    Abstract: A method for forming an electrode for a fuel cell is disclosed. The method comprises combining an electrically conductive material (e.g., graphite) and a solid grindable resole resin binder, the binder being essentially free of nitrogen and nitrogen-containing compounds, and consolidating the electrically conductive material and the binder to form the fuel cell electrode. The use of a solid, grindable, single stage, nitrogen-free resole resin binder serves to increase the operating life of the electrode. One example binder comprises the reaction product of bisphenol A and a molar excess of an aldehyde, such as formaldehyde.
    Type: Grant
    Filed: July 9, 2003
    Date of Patent: July 12, 2005
    Assignee: Plastics Engineering Company
    Inventors: Phillip A. Waitkus, Bohumir B. Lepeska, Theodore N. Morrison, Paschal A. Sciarra
  • Patent number: 6903046
    Abstract: This invention relates to improved catalytic compositions suited for use in hydrogenation processes and to an improved process for hydrogenating organic compounds as in amination of alcohols or hydrogenation of nitro groups to the amine using the catalyst. The catalytic composition is more particularly an improvement in nickel catalysts promoted with palladium carried on a support. The improvement resides in including a promoting effect of a metal M and/or its oxide, selected from Zn, Cd, Cu, and Ag, typically from about 0.01 to 10% by weight of the support.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: June 7, 2005
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Hao Ding
  • Patent number: 6903045
    Abstract: A carbonylation catalyst useful for producing esters and carboxylic acids in a vapor phase carbonylation process, wherein the catalyst includes a solid component having a catalytically effective amount of platinum and tin associated with a solid catalyst support material and a vaporous halide promoter component.
    Type: Grant
    Filed: June 19, 2001
    Date of Patent: June 7, 2005
    Assignee: Eastman Chemical Company
    Inventors: Joseph Robert Zoeller, Andy Hugh Singleton, Gerald Charles Tustin, Donald Lee Carver
  • Patent number: 6897178
    Abstract: Catalysts for the water gas shift reaction contain a variety of late transition metals. The catalytic compositions contain a late transition metal carried on a support which is a carbide, nitride, or mixed carbide nitride of a group 6 metal such as molybdenum, tungsten, and mixtures thereof. The late transition metal includes ruthenium, cobalt, nickel, palladium, platinum, copper, silver, or gold. The water gas shift reaction may be catalyzed by contacting a gaseous stream containing carbon monoxide and water with such a solid catalyst composition. In some embodiments, the catalysts are several times more active than known commercial catalysts for the water gas shift reaction.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: May 24, 2005
    Assignee: The Regents of The University of Michigan
    Inventors: Levi T. Thompson, Shyamal K. Bej, Jeremy J. Patt, Chang H. Kim
  • Patent number: 6897177
    Abstract: A process for preparing a cobalt based catalyst precursor includes, in a support impregnation stage, impregnating a coated catalyst support comprising porous catalyst support particles coated with carbon, with a cobalt salt, and partially drying the impregnated support. Thereafter, in a calcination stage, the partially dried impregnated support is calcined, to obtain the cobalt based catalyst precursor. The cobalt based catalyst precursor can then, in a reduction stage, be reduced to obtain a cobalt based Fischer-Tropsch catalyst.
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: May 24, 2005
    Assignee: Sasol Technology (Proprietary) Limited
    Inventors: Peter Jacobus Van Berge, Jan Van De Loosdrecht, Jacobus Lucas Visagie
  • Patent number: 6890504
    Abstract: The invention comprises a chemical composition with the structure shown below. The composition can be polymerized or pyrolyzed, forming transition metal nanoparticles homogeneously dispersed in a thermoset or carbon composition. The size of the nanoparticles can be controlled by manipulating the number and arrangement of functional groups in the composition and by changing the conditions of the polymerization or pyrolysis. The resulting thermosets and carbon compositions have useful magnetic, electric, mechanical, catalytic and/or optical properties.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: May 10, 2005
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Teddy M. Keller, Syed B. Qadri
  • Patent number: 6878847
    Abstract: A catalyst useful for catalytic vapor-phase oxidation of isobutylene, t-butanol or propylene to produce respectively corresponding unsaturated aldehyde and unsaturated carboxylic acid is provided. The catalyst consists of ring-formed shaped bodies composed of (i) a catalyst composition containing at least molybdenum and bismuth as the active ingredients and (ii) inorganic fibers. The catalyst excels in mechanical strength, can give the object products at high yield and shows little activity degradation with time.
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: April 12, 2005
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Hiroto Kasuga, Eiichi Shiraishi
  • Patent number: 6875717
    Abstract: A method and system for the in situ synthesis of a combinatorial library including impregnating a first component with a second component. The method and system advantageously may be employed in the synthesis of materials for screening for usefulness as a catalyst.
    Type: Grant
    Filed: July 16, 2003
    Date of Patent: April 5, 2005
    Assignee: Symyx Technologies, Inc.
    Inventors: Claus G. Lugmair, Damodara M. Poojary, Alfred Hagemeyer, Daniel M. Giaquinta
  • Patent number: 6864311
    Abstract: The invention aims at improving such compositions by proposing a non-toxic diluent harmless to reactivity and by making these compositions translucent, free from metallic impurities and capable of constituting light-polymerisable varnish with good properties of ductility for leveling and surface coating. This aim is achieved by the invention which proposes a composition comprising an organic polymerisable matrix A, containing cyclo-aliphatic epoxide resins or not, acrylates, alkenyl-ethers or polyols, a silicon diluent B with viscosity less than 100 MPa's, a radical and/or cationic (onium salt) photoinitiator C, optionally a light-sensitising material D, a pigment E and another additive F; provided that when A is a cyclo-aliphatic epoxide resin, B has a metal concentration not more than 100 ppm. The invention also concerns the use of the silicon diluent B for preparing a composition crosslinkable by cationic and/or radical process, under UV radiation, in the presence of a photoinitiator (ink or varnish).
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: March 8, 2005
    Assignee: Rhodia Chimie
    Inventors: Stefan Breunig, Jean-Marc Frances
  • Patent number: 6861387
    Abstract: The invention provides a noble metal-containing supported catalyst which contains one of the noble metals from the group Au, Ag, Pt, Pd, Rh, Ru, Ir, Os or alloys of one or more of these noble metals in the form of noble metal particles on a powdered support material. The particles deposited on the support material have a degree of crystallinity, determined by X-ray diffraction, of more than 2 and an average particle size between 2 and 10 nm. The high crystallinity and the small particle size of the noble metal particles lead to high catalytic activity for the catalyst. It is particularly suitable for use in fuel cells and for the treatment of exhaust gases from internal combustion engines.
    Type: Grant
    Filed: April 30, 2002
    Date of Patent: March 1, 2005
    Assignee: Umicore AG & Co. KG
    Inventors: Karsten Ruth, Peter Biberbach, Karl Anton Starz
  • Patent number: 6858192
    Abstract: An activated carbon-metal oxide matrix is disclosed. The activated carbon-metal oxide matrix may by obtained by a method including the steps of: preoxidizing a carbon material, grinding the preoxidized carbon material; mixing the ground preoxidized material with a metal oxide to form a carbon mixture; extruding the carbon mixture; carbonizing and activating the extrudate. The activated carbon-metal oxide matrix may be used to remove odorous compounds, acidic gases, and volatile organic compounds from a gas.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: February 22, 2005
    Assignee: USFilter Corporation
    Inventors: James Richard Graham, Cheng Jian Yuan
  • Patent number: 6855659
    Abstract: In a manufacturing method of carbon nanotubes by means of laser ablation, carbon molecules having 5-memberd carbon ring bonds (bonds of the pentagon of the fullerenes (C60, C70, C76, etc.)) are included at least in part of the laser irradiation target. By use of such laser irradiation targets, single-wall carbon nanotubes can be formed efficiently in a low temperature process of 500° C. or lower (at 400° C., for example). Carbon molecules having curved surfaces, such as carbon molecules having fullerene bonds, are preferably used in the laser irradiation target. As the carbon molecule having the fullerene bonds, a carbon molecule having a spherical surface, such as the C60 molecule, is preferably used. By use of such a laser irradiation target in a laser ablation process, single-wall carbon nanotubes can be formed efficiently in a low temperature process (at 400° C., for example).
    Type: Grant
    Filed: September 20, 2000
    Date of Patent: February 15, 2005
    Assignee: NEC Corporation
    Inventor: Yuegang Zhang
  • Patent number: 6844286
    Abstract: The present invention relates to water-based catalyst inks and their use for manufacture of catalyst-coated substrates. According to the present invention, a catalyst layer is applied to the hydrophobic surface of a substrate by using a water-based catalyst ink comprising an electrocatalyst, an ionomer and water. The catalyst ink also comprises a highly volatile surfactant having a vapor pressure at ambient temperature in the range of 1 to 600 Pa. The use of this surfactant allows applying the water-based ink to the hydrophobic surface of a variety of substrates, such as gas diffusion layers, advanced ionomer membranes and polymer substrates. The required coating deposit can be applied in one coating pass and the resulting catalyst layer exhibits improved performance due to the absence of residual surfactant in the catalyst layer.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: January 18, 2005
    Assignee: Umicore AG & Co. KG
    Inventors: Joachim Köhler, Volker Bänisch
  • Patent number: 6841509
    Abstract: A carbon nanocapsule supported catalysts. At least one kind of catalytic metal particle is deposited to a carbon nanocapsule, wherein the carbon nanocapsule has the following formula: F(?M)n, in which F is the carbon nanocapsule, M is the catalytic metal particle, and n is the number of the catalytic metal particle. By applying the carbon nanocapsule as a catalyst support, the catalytic behavior of the catalytic metal particle is specialized, the dispersion is improved, and the catalytic effect is enhanced.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: January 11, 2005
    Assignee: Industrial Technology Research Institute
    Inventors: Gan-Lin Hwang, Chao-Kang Chang
  • Patent number: 6841508
    Abstract: Compositions including oxycarbide-based nanorods and/or carbide-based nanorods and/or carbon nanotubes bearing carbides and oxycarbides and methods of making the same are provided. Rigid porous structures including oxycarbide-based nanorods and/or carbide based nanorods and/or carbon nanotubes bearing carbides and oxycarbides and methods of making the same are also provided. The compositions and rigid porous structures of the invention can be used either as catalyst and/or catalyst supports in fluid phase catalytic chemical reactions. Processes for making supported catalyst for selected fluid phase catalytic reactions are also provided. The fluid phase catalytic reactions catalyzed include hydrogenation, hydrodesulfurisation, hydrodenitrogenation, hydrodemetallisation, hydrodeoxigenation, hydrodearomatization, dehydrogenation, hydrogenolysis, isomerization, alkylation, dealkylation and transalkylation.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: January 11, 2005
    Assignee: Hyperion Catalysis International, Inc.
    Inventors: David Moy, Chunming Niu, Jun Ma, James M. Willey
  • Publication number: 20040265665
    Abstract: A membrane electrode assembly for a proton exchange membrane fuel cell that employs an improved catalyst. The catalyst is a mixture of a first catalyst and a second catalyst. The first catalyst is a 50 wt % Pt formed on Vulcan XC72 carbon having a BET surface area of about 250 m2/g. The second catalyst is a 50 wt % Pt formed on Ketjen Black carbon having a BET surface area of about 800 m2/g. The ratio of the first catalyst to the second catalyst is 1:1.
    Type: Application
    Filed: May 21, 2004
    Publication date: December 30, 2004
    Inventors: Susan G. Yan, Brian A. Litteer
  • Publication number: 20040259725
    Abstract: A method for forming a supported metal-containing powder. The method comprises forming a dispersion of a particulate support in a solution, which comprises a solvent and a dissolved metal. Heat is removed from the dispersion to precipitate the dissolved metal from the solution onto the particulate support. Preferably, enough heat is removed to freeze the solution. Also, the heat is removed is preferably removed from the dispersion by contacting a container containing the dispersion with a cryogenic liquid. After precipitating the dissolved metal onto the particulate support, the particulate support is separated from the solution, preferably by freeze-drying, to yield the supported metal-containing powder, which comprises the particulate support and a precipitated metal thereon.
    Type: Application
    Filed: February 12, 2004
    Publication date: December 23, 2004
    Applicants: Symyx Technologies, Inc., Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Konstantinos Chondroudis, Martin Devenney, Alexander Gorer
  • Publication number: 20040248730
    Abstract: Disclosed is an electrocatalyst for fuel cells, in which a porous carbon material including pores having a diameter smaller than a kinetic diameter of carbon monoxide is used as a support body and contact probability between an activated metal and carbon monoxide is decreased, thereby preventing fuel cell performance from being degraded by carbon monoxide. The electrocatalyst is obtained by adsorbing 10-80 parts by weight of an activated metal to 20-90 parts by weight of a porous support body, characterized in that the porous support body has a total surface area of 200-2,500 m2/g including an outer surface thereof and an inner surface of pores thereof, and has a plurality of pores penetrating into an interior of the support body with an average diameter of 2-15 nm and a total volume of 0.4-2.0 m3/g, and the activated metal is alloyed with 20-95 at % of platinum and 5-80 at % of one metal selected from among Ru, Sn, Os, Rh, Ir, Pd, V, Cr, Co, Ni, Fe and Mn.
    Type: Application
    Filed: June 3, 2003
    Publication date: December 9, 2004
    Applicant: Korea Institute of Energy Research
    Inventors: Chang-Soo Kim, Young-Gi Kim, Won-Yong Lee, Gu-Gon Park, Tae-Hyun Yang
  • Publication number: 20040248731
    Abstract: Furnace carbon black which has a hydrogen (H) content of greater than 4000 ppm and a peak integral ratio of non-conjugated H atoms (1250-2000 cm−1) to aromatic and graphitic H atoms (1000-1250 cm−1 and 750-1000 cm−1) of less than 1.22. The furnace carbon black is produced by injecting the liquid carbon black raw material and the gaseous carbon black raw material at the same point in a furnace carbon black process. The furnace carbon black may be used in the preparation of electrocatalysts.
    Type: Application
    Filed: March 8, 2004
    Publication date: December 9, 2004
    Applicant: Degussa-Huls AG
    Inventors: Karl Vogel, Emmanuel Auer, Karl-Anton Starz, Peter Albers, Klaus Bergemann, Conny Vogler
  • Publication number: 20040247988
    Abstract: A catalyst having catalytically active material supported on a carrier matrix. The catalytically active material may be a mixed-valence, nanoclustered oxide(s), an organometallic material or a combination thereof. The supported catalytic material is particularly useful for catalyzing oxygen reduction in a fuel cell, such as an alkaline fuel cell.
    Type: Application
    Filed: June 9, 2003
    Publication date: December 9, 2004
    Inventors: Stanford R. Ovshinsky, Cristian Fierro, Benjamin Reichman, William Mays, James Strebe, Michael A. Fetcenko, Avram Zallen, Tim Hicks
  • Publication number: 20040242412
    Abstract: Ruthenium sulfide catalyst and gas diffusion electrodes incorporating the same for reduction of oxygen in industrial electrolyzers which catalyst is highly resistant to corrosion making it useful for oxygen-depolarized aqueous hydrochloric acid electrolysis.
    Type: Application
    Filed: April 22, 2004
    Publication date: December 2, 2004
    Inventors: Andrea F. Gulla, Robert J. Allen, Emory S. De Castro
  • Publication number: 20040226863
    Abstract: The invention relates to a catalyst for the selective hydrodesulfurization of hydrocarbon-containing feedstocks that comprise sulfur-containing compounds and olefins. This catalyst comes in a sulfurized form and comprises a substrate that is selected from among the refractory oxides, at least one metal that is selected from the group that consists of the metals of groups VI and VII of the periodic table and carbon, whereby the carbon content is less than or equal to 2.8% by weight. The invention also relates to a method for the production of the catalyst that is described above, as well as a process that uses this catalyst for the selective hydrodesulfurization of hydrocarbon-containing feedstocks that contain sulfur-containing compounds and olefins.
    Type: Application
    Filed: January 29, 2004
    Publication date: November 18, 2004
    Inventors: Denis Uzio, Nathalie Marchal-George, Christophe Bouchy, Florent Picard
  • Patent number: 6815391
    Abstract: The present invention relates to a method for preparing nano-level Pt/C electrocatalyst for cathode of fuel cell. By employing ammonium chloride, potassium chloride, ammonium bromide, potassium bromide, ammonium iodide or potassium iodide as anchoring agent for the chloroplatinic acid, the present invention realizes the preparation of Pt/C electrocatalyst with platinum micro-particles homogeneously distributed in the interstices as well as on the surfaces of the active carbon. The sizes of the platinum particles in the catalyst are homogeneous and their average diameter is in the range of 2.5 to 4.5 mm. The present method is a novel one for preparing nanometer level Pt/C electrocatalyst. Said electrocatalyst possesses high specific activity per unit mass for the catalytic reduction of oxygen.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: November 9, 2004
    Assignee: Changchun Institute of Applied Chemistry Chinese Academy of Science
    Inventors: Wei Xing, Xuguang Li, Tianhong Lu
  • Publication number: 20040219420
    Abstract: The present invention is a catalyst for use in a fuel electrode of a polymer solid electrotype fuel cell which is formed by making a carbon powder support platinum and ruthenium thereon, and is characterized in that the loading ratio between platinum and ruthenium is from 1:2.5 to 1:4 (in molar ratio). It is preferable that the loading density of the catalyst is 40 to 70%. Additionally, it is preferable that a carbon powder having a specific surface area of 600 to 1,200 m2/g is used as the carrier supporting the catalyst particles.
    Type: Application
    Filed: January 28, 2004
    Publication date: November 4, 2004
    Inventors: Tomoyuki Tada, Masahiko Inoue
  • Patent number: 6809060
    Abstract: An aerogel type platinum-ruthenium-carbon catalyst of microporous structure maintaining long-term high catalytic activity, suitable for a direct methanol fuel cell, is manufactured by a sol-gel process, and supercritical drying while maintaining a microporous structure. The catalyst contains 5 to 70% by weight of platinum and ruthenium, remainder carbon, the platinum and ruthenium atomic ratio being of 1/4 to 4/1. Metal salts and base catalyst are added to a solution of organic gel materials, a solution of basic amine is added to the first solution, and the pH of the resulting solution is adjusted forming a sol, the sol is aged at 40 to 90 for 1 to 20 days forming and stabilizing the gel, solvent is removed from the gel by supercritical drying, and finally the aerogel is carbonized in an inert atmosphere, followed by hydrogen reduction.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: October 26, 2004
    Assignee: Korea Institute of Science and Technology
    Inventors: Dong Jin Suh, Tae-Jin Park, Young-Hyun Yoon, Kang Hee Lee, Il Gon Kim
  • Patent number: 6806224
    Abstract: A process for producing a supported metal catalyst which comprises reducing a metal halide in the liquid phase in the presence of a support material, an organic base and a reducing agent. In accordance with the process, the supported metal catalyst which comprises a metal component supported in the highly dispersed condition and exhibits high activity can be obtained easily.
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: October 19, 2004
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Jun Yoshihara, Takashi Motoi, Kazuaki Maeshima
  • Patent number: 6800584
    Abstract: Gold-containing catalysts, which catalyst is comprised of gold on a nanostructure support, which support is characterized as graphite nanofibers comprised of graphite sheets, which graphite sheets are oriented substantially perpendicular or parallel to the longitudinal axis of the nanofiber and wherein said graphite nanofiber contains exposed surfaces and wherein at least about 95% of said exposed surfaces are comprised of edge sites.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: October 5, 2004
    Assignee: Catalytic Materials LLC
    Inventors: R. Terry K. Baker, Nelly M. Rodriguez
  • Patent number: 6797667
    Abstract: The invention provides a process for preparing a platinum-ruthenium catalyst and the catalyst prepared therewith. The catalyst can be supported on a support material in powder form or may also be unsupported. To prepare the supported catalyst, the support material is suspended in water and the suspension is heated to at most the boiling point. While keeping the temperature of the suspension the same, solutions of hexachloroplatinic acid and ruthenium chloride are then added to the suspension, then the pH of the suspension is increased to a value between 6.5 and 10 by adding an alkaline solution and the noble metals are thus precipitated onto the support material. Afterwards, one or more organic carboxylic acids and/or their salts are added to the suspension and the catalyst is chemically reduced, washed, dried and optionally subsequently calcined under an inert or reducing atmosphere at a temperature between 300 und 1000° C.
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: September 28, 2004
    Assignee: Umicore AG & Co. KG
    Inventors: Karsten Ruth, Peter Biberbach, Karl-Anton Starz, Ralph McIntosh
  • Patent number: 6797184
    Abstract: A method is provided for oxidizing and/or decomposing organic and/or inorganic oxidizable substances in waste water by wet oxidation with a use of a catalyst, wherein the oxidizable substances are oxidized and/or decomposed with an oxygen containing gas in the presence of the catalyst under pressure such that the waste water retains the liquid phase thereof at a temperature of 50° C. to less than 170°C.; the catalyst contains activated carbon; and the oxygen concentration is controlled in an exhaust gas in the range from 0 to 5 vol %. The present inventive method is capable of treating waste water efficiently for a long period in a stable manner at reduced temperatures as compared with the substantially higher temperatures and pressures used in many of the prior art methods.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: September 28, 2004
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Yusuke Shiota, Kuninori Miyazaki, Takaaki Hashimoto, Tohru Ishii
  • Publication number: 20040186011
    Abstract: A metallic catalytic particle for producing single-walled carbon nanotubes. The catalytic particles contain at least one metal from Group VIII, including for example Co, Ni, Ru, Rh, Pd, Ir, and Pt, and at least one metal from Group VIb including for example Mo, W and Cr. The metal component is on a support such as silica.
    Type: Application
    Filed: January 8, 2004
    Publication date: September 23, 2004
    Inventors: Daniel E. Resasco, Boonyarach Kitiyanan, Jeffrey H. Harwell, Walter Alvarez
  • Publication number: 20040186012
    Abstract: A membrane electrode assembly for a proton exchange membrane fuel cell that employs an improved catalyst. The catalyst is a mixture of a first catalyst and a second catalyst. The first catalyst is a 50 wt % Pt formed on Vulcan XC72 carbon having a BET surface area of about 250 m2/g. The second catalyst is a 50 wt % Pt formed on Ketjen Black carbon having a BET surface area of about 800 m2/g. The ratio of the first catalyst to the second catalyst is 1:1.
    Type: Application
    Filed: January 27, 2004
    Publication date: September 23, 2004
    Inventors: Susan G. Yan, Brian A. Litteer
  • Publication number: 20040184983
    Abstract: The present invention relates to a catalyst consisting of: (a) one or more metals of the platinum group as active components; (b) one or more polyolefins; and (c) a carrier. The invention also relates to a process for the synthesis of hydrogen peroxide (H2O2) from hydrogen and oxygen which uses said catalyst and the use of the hydrogen peroxide solution in oxidation processes catalyzed by titanium silicalite. The process operates under high safety conditions with a high productivity and molar selectivity towards the formation of H2O2.
    Type: Application
    Filed: January 30, 2004
    Publication date: September 23, 2004
    Inventors: Giuseppe Paparatto, Giordano De Alberti, Rino D'Aloisio, Roberto Buzzoni
  • Patent number: 6787034
    Abstract: The present invention provides a supported catalyst for in situ remediation of soil and/or groundwater contaminated with a halogenated hydrocarbon comprising an adsorbent impregnated with zero valent iron, wherein the adsorbent is capable of adsorbing the halogenated hydrocarbon. This invention further provides a bioremediation composition for in situ bioremediation of soil and/or groundwater contaminated with hydrocarbons, comprising an adsorbent capable of adsorbing said hydrocarbons, a mixture of facultative anaerobes capable of metabolizing said hydrocarbons under sulfate-reduction conditions, a sulfate-containing compound that releases sulfate over a period of time, and a nutrient system for promoting growth of said anaerobes, wherein said nutrient system includes a sulfide scavenging agent.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: September 7, 2004
    Assignee: Remediation Products, Inc.
    Inventors: Scott Noland, Bob Elliott
  • Publication number: 20040171480
    Abstract: Electrocatalyst powders and methods for producing electrocatalyst powders, such as carbon composite electrocatalyst powders. The powders have a well-controlled microstructure and morphology. The method includes forming the particles from an aerosol of precursors by heating the aerosol to a relatively low temperature, such as not greater than about 400° C.
    Type: Application
    Filed: December 9, 2003
    Publication date: September 2, 2004
    Inventors: Mark J. Hampden-Smith, Toivo T. Kodas, Plamen Atanassov, Paolina Atanassova, Klaus Kunze, Paul Napolitano, David Dericotte
  • Patent number: 6777368
    Abstract: A molten-salt type catalyst is adapted for purifying particulate materials, which are contained in an exhaust gas emitted from an internal combustion engine and contain carbon. It includes a solid support and a catalytic ingredient. The catalytic ingredient is loaded on the solid support, and includes at least one member selected from the group consisting of silver nitrate, alkali metal nitrate, alkaline-earth metal nitrate and rare-earth nitrate. The molten-type catalyst can efficiently burn and remove the particulate materials even in a low temperature range.
    Type: Grant
    Filed: January 3, 2002
    Date of Patent: August 17, 2004
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Tomoyuki Kayama, Hirofumi Shinjoh, Yuji Sakakibara
  • Publication number: 20040158112
    Abstract: A catalyst useful for the production of olefins from alkanes via oxidative dehydrogenation (ODH) is disclosed. The catalyst includes a silicon carbide support. The catalyst may optionally include a base metal, metal oxide, or combination thereof. A base metal is herein defined as a non-Group VIII metal, with the exception of iron, cobalt and nickel. Suitable base metals include Group IB-VIIB metals, Group IIIA-VA metals, Lanthanide metals, iron, cobalt and nickel. Suitable metal oxides include alumina, stabilized aluminas, zirconia, stabilized zirconias (PSZ), titania, ytteria, silica, niobia, and vanadia. Additionally, the catalyst may optionally include a Group VIII promoter. Suitable Group VIII promoters include Ru, Rh, Pd, Os, Ir, and Pt.
    Type: Application
    Filed: February 10, 2003
    Publication date: August 12, 2004
    Applicant: ConocoPhillips Company
    Inventors: Sriram Ramani, Joe D. Allison, Lisa M. Carmichael, Zhen Chen
  • Publication number: 20040158086
    Abstract: One aspect of the invention relates to a catalyst composite containing an extruded catalyst support containing an extruded activated carbonaceous material having specifically a defined pore structure. For example, the extruded activated carbonaceous material may have pores wherein at least about 40% of total Hg porosity occurs in pores having a diameter of about 200 Å and larger. Alternatively the extruded activated carbonaceous material may have a first set of pores having a pore diameter of at least about 40 Å and at most about 100 Å with a porosity of at least about 0.15 cc/g, and a second set of pores having a pore diameter of at least about 5,000 Å and at most about 20,000 Å with a porosity of at least about 0.3 cc/g.
    Type: Application
    Filed: February 4, 2004
    Publication date: August 12, 2004
    Inventor: James Ferguson White
  • Publication number: 20040157109
    Abstract: A membrane electrode assembly for a proton exchange membrane fuel cell that employs an improved catalyst. The catalyst is a mixture of a first catalyst and a second catalyst. The first catalyst is a 50 wt % Pt formed on Vulcan XC72 carbon having a BET surface area of about 250 m2/g. The second catalyst is a 50 wt % Pt formed on Ketjen Black carbon having a BET surface area of about 800 m2/g. The ratio of the first catalyst to the second catalyst is 1:1.
    Type: Application
    Filed: February 7, 2003
    Publication date: August 12, 2004
    Inventors: Susan G. Yan, Brian A. Litteer
  • Patent number: 6770589
    Abstract: An improved catalyst for producing carbon fibrils is made by incorporating an effective yield-enhancing amount of a carboxylate into a fibril-forming catalyst. Alternatively, such a catalyst is made by coprecipitating a compound of a metal having fibril-forming catalytic properties and an aluminum and/or magnesium compound, optionally in the presence of carbon particles or carbon fibril aggregates. The catalyst may also be made by incorporating a compound of a fibril-forming metal onto magnesia particles in carbon particles or carbon fibril aggregates. The catalysts, methods of using them to form carbon fibrils and those carbon fibrils are also disclosed.
    Type: Grant
    Filed: February 14, 2001
    Date of Patent: August 3, 2004
    Assignee: Hyperion Catalysis International, Inc.
    Inventors: David Moy, Asif Chishti
  • Publication number: 20040133045
    Abstract: A catalyst particle containing an active metal and a carrier composed of a carbon material, wherein the active metal being supported by cavities on a surface of the carrier and their edge portions. The active metal is fixedly attached to the carrier for a long period of time, so that the catalyst particle stably shows a high catalytic activity, which is hardly reduced by a reaction. The catalyst particle is usable for the dehydrogenation of alcohols.
    Type: Application
    Filed: August 26, 2003
    Publication date: July 8, 2004
    Inventors: Hitoshi Okanobori, Atsushi Kamachi
  • Publication number: 20040121221
    Abstract: A catalytic material and electrode of the present invention are characterized in that the catalyst carrier constituting the above-mentioned catalytic material and electrode includes at least one member selected from the group consisting of nitrogen atoms, oxygen atoms, phosphor atoms, and sulfur atoms. Since the cohesion or growth of catalyst grains can hereby be suppressed, it is possible to provide a highly active catalyst, a high-performance electrode, and a high-output-density fuel cell which uses the same.
    Type: Application
    Filed: December 12, 2003
    Publication date: June 24, 2004
    Inventors: Shuichi Suzuki, Chahn Lee, Yuichi Satsu, Kishio Hidaka, Mitsuo Hayashibara, Yoshiyuki Takamori, Tomoichi Kamo, Yasuhisa Aono
  • Patent number: 6753290
    Abstract: The present invention relates to catalyst compositions for purifying terephthalic acid from p-carboxybenzaldehyde, based on Group VIII metals, comprising crystallites of catalytically active palladium or of palladium and at least one metal of Group VIII of the Periodic Table of Elements, applied to the surface of a carbon material, wherein a mesoporous graphite-like material with the average mesopore size in the range of from 40 to 400 Å, the proportion of the mesopores in the total pore volume of at least 0.5, and the degree of graphite-similarity of at least 20% is used as the carbon material, in which metal crystallites are distributed in the volume of the carbon material granules in such a manner that the distribution peaks of these crystallites should be at a distance from the outer surface of the granule corresponding to 1-30% of its radius.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: June 22, 2004
    Assignees: Institut Kataliza Imeni G.K. Boreskova Sibirskogo Otdelenia Rossiiskoi Akademii Nauk, Samsung General Chemicals Co., Ltd.
    Inventors: Anatoly Vladimirovich Romanenko, Vladimir Alexandrovich Likholobov, Maria Nikolaevna Timofeeva, Jhung Sung Hva, Park Jun Seok