Sulfur Containing Organic Compound Patents (Class 502/508)
  • Spinel based high temperature shift catalysts
    Patent number: 7427580
    Abstract: A method is described for producing a high temperature shift catalyst, not requiring a reduction step prior to use, by precipitating a composition containing divalent and trivalent iron compounds and a modifier metal selected from trivalent chromium and/or manganese compounds from an aqueous solution containing iron and modifier metal salts with a base, and forming the resultant precipitate into shaped catalyst units, without exposing said precipitate to an oxidizing atmosphere at temperatures above 200° C.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: September 23, 2008
    Assignee: Johnson Matthey PLC
    Inventors: Andrew Mark Ward, Sean Alexander Axon, Paul John Murray
  • Ionic liquids as addenda in photothermographic systems
    Patent number: 6586166
    Abstract: This invention involves use of ionic liquids as addenda in a photothermographic system. The presence of an ionic liquid was found to increase image density. A preferred ionic liquid comprises an organic cation associated with a suitable anion, which ionic liquid melts at a temperature of 50° C. or less.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: July 1, 2003
    Assignee: Eastman Kodak Company
    Inventors: Leif P. Olson, James H. Reynolds
  • GAS DIFFUSION ELECTRODE, SOLID POLYMER ELECTROLYTE MEMBRANE, METHOD OF PRODUCING THEM, AND SOLID POLYMER ELECTROLYTE TYPE FUEL CELL USING THEM
    Publication number: 20020004159
    Abstract: A gas diffusion electrode for solid polymer electrolyte fuel cell comprising a gas diffusion electrode and a catalyst layer, characterized in that said catalyst layer is provided with a catalytic substance and an ion exchange resin having pores. In this arrangement, a three-phase boundary can be provided also inside the catalyst layer while maintaining sufficient electron conductivity, capability of supplying reaction gas and protonic conductance, making it possible to enhance the polarization characteristics and power density thereof.
    Type: Application
    Filed: June 28, 1999
    Publication date: January 10, 2002
    Inventor: KAZUHIDE TOTSUKA
  • Cerium oxides, zirconium oxides, Ce/Zr mixed oxides and Ce/Zr solid solutions having improved thermal stability and oxygen storage capacity
    Patent number: 6133194
    Abstract: The production of cerium oxides, zirconium oxides, (Ce,Zr)O.sub.2 mixed oxides and (Ce,Zr)O.sub.2 solid solutions having improved particle size distribution, surface area, oxygen storage capacity and pore volume by the addition of an additive, such as anionic surfactants, nonionic surfactants, polyethylene glycols, carboxylic acids, and carboxylate salts, during the formation of the oxides or precursors thereof.
    Type: Grant
    Filed: April 21, 1997
    Date of Patent: October 17, 2000
    Assignee: Rhodia Rare Earths Inc.
    Inventors: Jean-Pierre Cuif, Julie Lynn Shreeve Keyer, Steven Eric Deutsch
  • Nanoscale solid superacid catalysts with pendant fluoroalkylsulfonic acid or fluoro, perfluoroalkylsulfonic acid groups
    Patent number: 5922635
    Abstract: A solid superacid catalyst composition of a carrier material having a particle size of between 0.5 and 5000 nm and at least one pendant fluoroalkylsulfonic acid or fluoro, perfluoroalkylsulfonic acid group attached thereto. Also, methods for making this catalysts by attaching pendant fluoroalkylsulfonic acid or fluoro, perfluoroalkylsulfonic acid groups to the carrier material by various procedures to form the catalyst composition.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: July 13, 1999
    Inventors: George A. Olah, G. K. Surya Prakash
  • Process for the pretreatment of a catalyst by a mixture of a sulphur agent and an organic reducing agent
    Patent number: 5153163
    Abstract: The invention relates to a pretreatment of a petrochemical or refining catalyst containing at least one metal in metallic or metallic oxide form, deposited on a support.The catalyst is impreganted by a solution or a suspension containing on the one hand a specific sulphur agent, e.g., diethanol disulfide and on the other an organic reducing agent, e.g., formic acid.
    Type: Grant
    Filed: July 12, 1991
    Date of Patent: October 6, 1992
    Assignee: Europeenne de Retraitement de Catalyseurs Eurecat
    Inventors: Raymond Roumieu, Jean-Paul Boitiaux
  • Process for the preparation of anthraquinone
    Patent number: 4781862
    Abstract: Anthraquinone is produced by reacting phthalic anhydride in the vapor phase over a catalyst which may be an oxide of the Group 4b metals zirconium, hafnium, and titanium, the Group 5b metals niobium, tantalum, and vanadium, or the rare earths cerium and thorium such oxides, preferably being treated with sulfuric acid and calcined. Substituted anthraquinones may be produced by employing the corresponding substituted phthalic anhydrides.
    Type: Grant
    Filed: July 8, 1986
    Date of Patent: November 1, 1988
    Assignee: Montvale Process Company, Inc.
    Inventor: Alan E. Goliaszewski
  • Process for the preparation of anthraquinone
    Patent number: 4666632
    Abstract: Anthraquinone is produced by reacting phthalic anhydride with benzene in the liquid phase over a super acid catalyst which may be an oxide of the Group 4b metals zirconium, hafnium, and titanium, or the Group 5b metals niobium, tantalum, and vanadium, preferably zirconium oxide, such oxides being treated with sulfuric acid and calcined. The process may also be applied to substituted equivalents, such as methyl phthalic anhydride and toluene.
    Type: Grant
    Filed: July 8, 1986
    Date of Patent: May 19, 1987
    Assignee: The Halcon SD Group, Inc.
    Inventors: Alan E. Goliaszewski, Richard F. Salinaro