By Reacting A Nitrogenous Or Halogenous Compound Patents (Class 423/643)
  • Publication number: 20080267852
    Abstract: Process for preparing pulverulent solids, in which one or more oxidizable and/or hydrolysable metal compounds are reacted in a high-temperature zone in the presence of oxygen and/or steam, the reaction mixture is cooled after the reaction, and the pulverulent solid is removed from gaseous substances, wherein at least one metal compound is introduced into the high-temperature zone in solid form and the evaporation temperature of the metal compound is below the temperature of the high-temperature zone.
    Type: Application
    Filed: November 29, 2006
    Publication date: October 30, 2008
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Kai Schumacher, Stefan Fiedler, Roland Schilling, Ronald Ihmig, Stipan Katusic
  • Publication number: 20080260612
    Abstract: Multi-step metal compound oxidation process to produce compounds and enhanced metal oxides from various source materials, e.g. metal sulfides, carbides, nitrides and other metal containing materials with metal oxides from secondary reaction steps being utilized as an oxidation agent in the first reactions.
    Type: Application
    Filed: April 18, 2008
    Publication date: October 23, 2008
    Applicant: Orchard Material Technology, LLC
    Inventor: Lawrence F. McHugh
  • Patent number: 6713039
    Abstract: A lithium-manganese oxide for use in a lithium secondary cell cathode, having a spinel structure expressed by a chemical compositional formula of LixMn2O4-zFz (1.12≦X≦1.20, 0<Z<0.16) and having a lattice constant ranging from 8.220 to 8.230 Å, the lithium-manganese oxide including electrolytic or chemically synthesized manganese dioxide, lithium salt, and fluoride.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: March 30, 2004
    Assignee: Kyushu Ceramics Industry Co., Ltd.
    Inventors: Hiroyuki Tabata, Kazue Matsui, Noriko Anan
  • Patent number: 6555078
    Abstract: The present invention provides an inexpensive process for the preparation of lithium salts of formula LiX having a desired or required level of purity using lithium chloride and lithium sulfate. In the process of the invention, a lithium salt selected from lithium chloride, lithium sulfate, and combinations thereof is reacted with NaX or KX in a aqueous, semiaqueous, or organic solution and the precipitated salts are removed to obtain the LiX solution of desired purity. Preferably, a semiaqueous solution containing water and an organic solvent is used at some point in the reaction. The process of the invention eliminates the use of highly acidic materials and thus reduces the cost of raw materials and the need for specialized equipment.
    Type: Grant
    Filed: September 16, 1997
    Date of Patent: April 29, 2003
    Assignee: FMC Corporation
    Inventor: Vijay Chandrakant Mehta
  • Patent number: 6383235
    Abstract: A process of preparation capable of easily preparing cathode materials having a homogeneous composition in a good mass productivity, a cathode material obtained by this process, and a secondary lithium ion battery using the cathode material. Aqueous solutions of each of a lithium salt, a transition metal salt, and a complexing agent are prepared and mixed in a stoichiometric ratio of a cathode material, and therefrom water is removed by spray-drying to give a precursor which is then sintered. High performance secondary lithium ion batteries are obtained by using the obtained cathode material in the positive electrode.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: May 7, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takeyuki Maegawa, Ayumi Nozaki, Fusaoki Uchikawa
  • Patent number: 5855862
    Abstract: A method for preparing an oxide (P), which includes the steps of (i) forming a solid phase compound (O) based on an oxide containing molecular entities (1) chosen from optionally substituted ammonium, diammonium, diazan-ium or diazandium, the entities being distributed within the solid matrix, and (ii) eliminating the entities (1) from the solid phase compound (O) by reacting the solid phase compound (O) with a gaseous stream containing a break-down reactant for the entities (1), and isolating the resulting solid material (P).
    Type: Grant
    Filed: January 8, 1997
    Date of Patent: January 5, 1999
    Assignee: Rhone-Poulenc Chimie
    Inventors: Jean-Claude Grenier, Jean-Pierre Doumerc, Stephane Petit
  • Patent number: 5676919
    Abstract: High-purity, sintered spherical Li.sub.2 O granules is produced by a gel precipitation technique. Li.sub.2 CO.sub.3 powder is dispersed in an aqueous solution of a water-soluble resin, whose drops are transferred through a nozzle into a solidifying acetone bath. Spherical gel particles in which Li.sub.2 CO.sub.3 is dispersed are formed in the acetone bath. The spherical gel particles are dried, calcined, thermally decomposed and sintered.
    Type: Grant
    Filed: November 27, 1995
    Date of Patent: October 14, 1997
    Assignees: Japan Atomic Energy Research Institute, Genshi Nenryo Kogyo Kabushiki Kaisha
    Inventors: Hiroshi Kawamura, Shigeharu Yoshimuta
  • Patent number: 5089248
    Abstract: Metal oxides prepared by exchange reactions between organosemiconductor oxides (such as disiloxanes) and metal coordination compounds (such as neutral metal complexes, metal chelates and chlorometalates), metallic halides (such as zinc chloride), or organometallic compounds (such as methylithium) in inert environments and anhydrous solvents.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: February 18, 1992
    Inventor: Masud Akhtar
  • Patent number: 4837002
    Abstract: Chlorate is removed from aqueous caustic soda by reducing with iron pentacarbonyl and separating off the resulting iron oxide containing precipitate.
    Type: Grant
    Filed: February 22, 1988
    Date of Patent: June 6, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Dieter Schlaefer, Wolfgang Kochanek, Bernd Leutner
  • Patent number: 4724132
    Abstract: A continuous process for the manufacture of a metal salt solution is described which provides more economical products with higher quality than current processes. The process is safer, both to operating personnel and to the environment, than currently used processes. The process comprises feeding an aqueous metal compound slurry, e.g., a metal oxide/hydroxide slurry and a mineral acid, e.g., nitric acid, and water to a reactor which includes a zone of extreme mixing and agitation, most preferably a cross-pipe reactor provided with an optional static in-line mixer. A cross-pipe reactor provides complete and efficient reaction by providing greater surface area, high agitation and a long reaction time.
    Type: Grant
    Filed: September 4, 1986
    Date of Patent: February 9, 1988
    Inventor: Carl J. Fabry
  • Patent number: 4372924
    Abstract: A method to purify an aqueous solution of an alkali metal hydroxide by countercurrently contacting the ammonia and hydroxide, in a volume ratio of about 0.6 to 1 to about 1 to 1, in a packed bed. The temperature in the lower portion of an extractor in which the process is carried out is controlled and maintained within a range of at least about 155.degree. to about 170.degree. F.
    Type: Grant
    Filed: May 27, 1980
    Date of Patent: February 8, 1983
    Assignee: The Dow Chemical Company
    Inventor: David L. Porter
  • Patent number: 4073741
    Abstract: A substantially fuel-free oxygen-generating composition consisting essentially of an alkali metal chlorate which may contain a small amount of perchlorate, in combination with a catalytic amount in the order of about 0.5 to 5.0% by weight of cobalt oxide.
    Type: Grant
    Filed: March 5, 1976
    Date of Patent: February 14, 1978
    Assignee: A-T-O Inc.
    Inventor: Clifford E. Heintz
  • Patent number: 4072501
    Abstract: Metal powders, metal oxide powders, and mixtures thereof of controlled particle size are provided by reacting an aqueous solution containing dissolved metal values with excess urea. Upon heating, urea reacts with water from the solution leaving a molten urea solution containing the metal values. The molten urea solution is heated to above about 180.degree. C. whereupon metal values precipitate homogeneously as a powder. The powder is reduced to metal or calcined to form oxide particles. One or more metal oxides in a mixture can be selectively reduced to produce metal particles or a mixture of metal and metal oxide particles.
    Type: Grant
    Filed: April 13, 1977
    Date of Patent: February 7, 1978
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Thomas C. Quinby