Oxygen Or Compound Thereof Patents (Class 423/579)
  • Patent number: 4668498
    Abstract: A singlet delta aerosol generator 10 includes a reaction chamber 24 downstream from a supersonic nozzle section 18. A mixture of gaseous chlorine and an inert diluent gas is reacted with liquid basic hydrogen peroxide (BHP) in reaction chamber 24 to form a flow of liquid droplets and gaseous singlet delta oxygen. Separating means, including a deflecting body 30, located within a downstream end of the reaction chamber 24, separates the flow of liquid droplets and gaseous singlet delta oxygen into a primary flow and a secondary flow. The primary flow contains a major amount of the gaseous singlet delta oxygen and a minor amount of the liquid droplets; the secondary flow contains the remainder of the gaseous singlet delta oxygen and of liquid droplets.
    Type: Grant
    Filed: September 27, 1985
    Date of Patent: May 26, 1987
    Inventor: James A. Davis
  • Patent number: 4663144
    Abstract: Water is decomposed to molecular hydrogen and molecular oxygen in a thermochemical cycle which comprises (i) reacting Cl.sub.2, Br.sub.2 or BrCl with water to obtain oxygen and hydrogen halide; (ii) forming a graphite intercalation compound with a hydrogen halide from step (i) and a metal halide selected from MBr.sub.i Cl.sub.3-i, wherein M is aluminum, gallium or indium and i is 0, 1, 2 or 3, and thereby obtaining hydrogen; (iii) decomposing by heating the graphite intercalation compound formed in step (ii); (iv) recycling the halogen produced in step (iii) for use in step (i); and (v) recycling the metal halide and graphite produced in step (iv) for use in step (ii).
    Type: Grant
    Filed: November 25, 1985
    Date of Patent: May 5, 1987
    Assignee: GA Technologies Inc.
    Inventors: Barry W. McQuillan, John H. Norman
  • Patent number: 4643889
    Abstract: A process for generating an excited molecular oxygen by a procedure which comprises causing a mixture of an alkaline aqueous solution with hydrogen peroxide to wet the surface portion of a layer of a hydrophilic and gas-pervious material, causing a molecular chlorine-containing gas to penetrate said layer from the side opposite said surface thereof, enabling said gas during the penetration thereof through said material to react with said mixed aqueous solution which has wetted said surface portion of said material, and thereby inducing generation of said excited molecular oxygen, O.sub.2 (.sup.1 .DELTA.), through said surface portion of said layer wetted by said mixed aqueous solution.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: February 17, 1987
    Assignees: Mitsui Grinding Wheel Co., Ltd., Taro Uchiyama
    Inventors: Taro Uchiyama, Kiwamu Takehisa, Isao Ishizaki
  • Patent number: 4620970
    Abstract: A method for generating oxygen gas by contacting a peroxygen compound in water with a catalyst composed of a cobalt salt and an organic carboxylic acid or a salt thereof wherein the carboxylic acid has at least one hydroxyl group and at least one carboxyl group.
    Type: Grant
    Filed: November 30, 1984
    Date of Patent: November 4, 1986
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Takeo Suzumori, Jun Kokubu, Minoru Kubota
  • Patent number: 4619821
    Abstract: A process to decompose ozone comprises passing an ozone-containing gas with a catalyst comprised of an AMS-1B crystalline borosilicate catalyst.
    Type: Grant
    Filed: December 2, 1985
    Date of Patent: October 28, 1986
    Assignee: Amoco Corporation
    Inventor: Stephen R. Ely
  • Patent number: 4617182
    Abstract: A process for the integration of a chemical absorption separation of oxygen and nitrogen from air with a combustion process is set forth wherein excess temperature availability from the combustion process is more effectively utilized to desorb oxygen product from the absorbent and then the sensible heat and absorption reaction heat is further utilized to produce a high temperature process stream. The oxygen may be utilized to enrich the combustion process wherein the high temperature heat for desorption is conducted in a heat exchange preferably performed with a pressure differential of less than 10 atmospheres which provides considerable flexibility in the heat exchange.
    Type: Grant
    Filed: August 26, 1985
    Date of Patent: October 14, 1986
    Assignee: Air Products and Chemicals, Inc.
    Inventors: William R. Brown, Anthony A. Cassano, Brian R. Dunbobbin, Pradip Rao, Donald C. Erickson
  • Patent number: 4609383
    Abstract: An apparatus for extracting oxygen from an environment surrounding the apparatus, which comprises a container having an interior space isolated from physical contact with the environment at least in part by a gas permeable membrane having a first and a second side, wherein the membrane contacts the environment on the first side of the membrane, a carrier fluid in contact with the second side of the membrane in the first container, and a non-proteinaceous oxygen binding compound contained in the carrier fluid, wherein the compound comprises a tetradentate chelating molecule, a metal ion chelated in the molecule, and a nitrogenous base chelated to the metal ion, is disclosed along with a method for extracting oxygen from environmental fluids.
    Type: Grant
    Filed: September 24, 1984
    Date of Patent: September 2, 1986
    Assignee: Aquanautics Corporation
    Inventors: Joseph Bonaventura, Celia Bonaventura, Joseph C. Van Ryzin, Bruce D. Zenner
  • Patent number: 4602987
    Abstract: A method for extracting oxygen from a fluid environment, which comprises the steps of (1) contacting a first fluid environment containing oxygen with a first surface of a first oxygen permeable membrane having a first and a second surface, wherein the membrane separates the environment from an interior space of a closed container, (2) transporting a carrier fluid into contact with the second surface of the membrane, wherein the carrier fluid is confined in the closed container and the carrier fluid contains a binding-state oxygen carrier, whereby oxygen which diffuses through the membrane binds to the carrier to give a bound oxygen complex, (3) transporting the carrier fluid containing the bound oxygen complex to a first electrode compartment of an electrochemical cell which forms a second portion of the closed container, (4) electrochemically modifying the binding-state oxygen carrier to an oxidation state having less binding affinity for oxygen, thereby releasing free oxygen into the carrier fluid and produ
    Type: Grant
    Filed: September 24, 1984
    Date of Patent: July 29, 1986
    Assignee: Aquanautics Corporation
    Inventors: Joseph Bonaventura, Celia Bonaventura, Joseph C. Van Ryzin, Bruce D. Zenner, C. William Anderson
  • Patent number: 4601884
    Abstract: An appliance for continuous production of a gaseous product (12), and a liquid byproduct (16), at the same time by reacting a liquid reagent in a reactor (4). The positive difference between the pressure at an entrance to and the pressure at an outlet of the reactor (4) is kept constant. The appliance is used to generate oxygen by decomposition of hydrogen peroxide and this oxygen can be used in welding and cutting sets. The appliance includes a reactor comprising a horizontal reaction zone connected to a horizontal gas collection zone, located above the reaction zone, by vertical conduits.
    Type: Grant
    Filed: June 26, 1984
    Date of Patent: July 22, 1986
    Assignee: Interox (Societe Anonyme)
    Inventors: Paul Coeckelberghs, Willy Depoorter
  • Patent number: 4565685
    Abstract: A chemical absorbent air separation process is set forth which uses a temperature swing absorption-desorption cycle in combination with a pressure swing wherein the pressure is elevated in the desorption stage of the process.
    Type: Grant
    Filed: September 14, 1984
    Date of Patent: January 21, 1986
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Anthony A. Cassano
  • Patent number: 4558451
    Abstract: A generating device for producing a laser energizing gas in the singlet delta, electronic state comprising a vacuum chamber; a tubular reaction chamber positioned within said vacuum chamber, said reaction chamber having a closed end and an oppositely disposed open end; means positioned in said closed end for introducing a flow of a gaseous reactant into said reaction chamber; means positioned adjacent said closed end at an angle perpendicular to the position of said gas introducing means for introducing a stream of a liquid reactant into said gas flow to effect a chemical reaction therebetween and the generation of a laser energizing, singlet delta gas; and means for interconnection to a lasing device for directing a flow of said generated, singlet delta gas to a lasing cavity.
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: December 10, 1985
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: William E. McDermott, David E. Ellis, Nicholas R. Pchelkin, George W. Miller, David J. Benard, Ralph J. Richardson
  • Patent number: 4542010
    Abstract: Process and apparatus for the separation and purification of oxygen and nitrogen as well as a novel membrane useful therein are disclosed. The process utilizes novel facilitated transport membranes to selectively transport oxygen from one gaseous stream to another, leaving nitrogen as a byproduct. In the method, an oxygen carrier capable of reversibly binding molecular oxygen is dissolved in a polar organic membrane which separates a gaseous feed stream such as atmospheric air and a gaseous product stream. The feed stream is maintained at a sufficiently high oxygen pressure to keep the oxygen carrier in its oxygenated form at the interface of the feed stream with the membrane, while the product stream is maintained at a sufficiently low oxygen pressure to keep the carrier in its deoxygenated form at the interface of the product stream with the membrane.
    Type: Grant
    Filed: June 30, 1982
    Date of Patent: September 17, 1985
    Assignee: Bend Research, Inc.
    Inventors: Ian C. Roman, Richard W. Baker
  • Patent number: 4529577
    Abstract: Method of separating oxygen or nitrogen from air using as an oxygen acceptor composition a molten solution of alkali metal salt of a cation composition of sodium and potassium cations and an anion composition of 50 to 94% nitrate, 4 to 25% nitrite and combined oxide, peroxide and superoxide wherein said oxides are present in less than 1 mol % based on sodium peroxide.
    Type: Grant
    Filed: July 11, 1984
    Date of Patent: July 16, 1985
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Michael S. Chen, Michael T. Heffelfinger
  • Patent number: 4526775
    Abstract: A continuous chemical air separation is performed wherein oxygen is recovered with a molten alkali metal salt oxygen acceptor in a series of absorption zones which are connected to a plurality of desorption zones operated in separate parallel cycles with the absorption zones. A greater recovery of high pressure oxygen is achieved at reduced power requirements and capital costs.
    Type: Grant
    Filed: February 23, 1984
    Date of Patent: July 2, 1985
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Anthony A. Cassano
  • Patent number: 4521398
    Abstract: A continuous process is set forth for the production of oxygen from an oxygen containing gas stream, such as air, by contacting a feed gas stream with a molten solution of an oxygen acceptor to oxidize the acceptor and cyclically regenerating the oxidized acceptor by releasing oxygen from the acceptor wherein the oxygen-depleted gas stream from the contact zone is treated sequentially to temperature reduction by heat exchange against the feed stream so as to condense out entrained oxygen acceptor for recycle to the process, combustion of the gas stream with fuel to elevate its temperature and expansion of the combusted high temperature gas stream in a turbine to recover power.
    Type: Grant
    Filed: July 18, 1983
    Date of Patent: June 4, 1985
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Donald C. Erickson
  • Patent number: 4508700
    Abstract: A method of generating oxygen for emergency use, wherein a mixture of solid material prepared by binding a catalyst such as the powder of manganese dioxide with a water-soluble binding agent such as a gum arabic solution and an addition compound of sodium carbonate and hydrogen peroxide is intermixed with water, so that the solid material is dissolved allowing the catalyst to gradually come into contact with a solution of hydrogen peroxide resulting from the decomposition of the addition compound of sodium carbonate and hydrogen peroxide, thereby generating oxygen gradually and continuously for an extended period of time.
    Type: Grant
    Filed: April 25, 1983
    Date of Patent: April 2, 1985
    Assignee: Hoshiko Medical Laboratories, Inc.
    Inventor: Yoshinori Hoshiko
  • Patent number: 4507285
    Abstract: The invention provides a stabilized activated oxygen in matrix of chlorite ions and pharmaceutical compositions containing this stabilized activated oxygen. The stabilized activated oxygen is present in the form of a solution. The medication can be used for the treatment of skin diseases or wound healing disorders.
    Type: Grant
    Filed: April 7, 1983
    Date of Patent: March 26, 1985
    Inventor: Friedrich-Wilhelm Kuhne
  • Patent number: 4491674
    Abstract: A process for the safe supply of molecular oxygen or gas containing molecular oxygen to an oxidation of hydrocarbons in the liquid phase, wherein, immediately before the point of entry into the liquid hydrocarbon, the oxygen, or gas containing oxygen, to be supplied is at least 20.degree. C. colder than the hydrocarbon, and wherein, as soon as the oxygen, or gas containing oxygen, which is to be supplied exceeds the predetermined temperature at the supply orifice, the supply ceases.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: January 1, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Norbert Rieber, Hans Hellbach, Gerhard Hunziker, Guenter Mueller
  • Patent number: 4488951
    Abstract: The integrated electrochemical/chemical oxygen generating system of the invention includes a water electrolyzer combined with a chemical oxygen generating subsystem which converts hydrogen from the electrolyzer to a decomposable oxygen source such as hydrogen peroxide. The total oxygen output of such a system is greater than that possible from the electrolyzer alone while safely disposing of the electrochemically generated hydrogen.
    Type: Grant
    Filed: November 4, 1983
    Date of Patent: December 18, 1984
    Assignee: General Electric Company
    Inventors: Mary E. Nolan, Anthony B. LaConti
  • Patent number: 4476105
    Abstract: The invention is an improved process for producing gaseous hydrogen and oxygen from water. The process is conducted in a photolytic reactor which contains a water-suspension of a photoactive material containing a hydrogen-liberating catalyst. The reactor also includes a volume for receiving gaseous hydrogen and oxygen evolved from the liquid phase. To avoid oxygen-inactivation of the catalyst, the reactor is evacuated continuously by an external pump which circulates the evolved gases through means for selectively recovering hydrogen therefrom. The pump also cools the reactor by evaporating water from the liquid phase. Preferably, product recovery is effected by selectively diffusing the hydrogen through a heated semipermeable membrane, while maintaining across the membrane a magnetic field gradient which biases the oxygen away from the heated membrane. This promotes separation, minimizes the back-reaction of hydrogen and oxygen, and protects the membrane.
    Type: Grant
    Filed: January 28, 1982
    Date of Patent: October 9, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Elias Greenbaum
  • Patent number: 4461756
    Abstract: A method and apparatus for producing molecular oxygen in the excited singlet delta oxygen electronic state for use as an excited species reactant in a high energy, continuous-wave, chemically pumped laser. In this invention, small amounts of sodium hydroxide and hydrogen peroxide are continuously mixed, reacted, cooled and then combined with chlorine to form a mixture which is injected into a mixing chamber as very fine droplets to provide an efficient means for effecting a reaction which produces excited molecular oxygen.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: July 24, 1984
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: John D. Rockenfeller
  • Patent number: 4460444
    Abstract: Hydrogen is recovered from aqueous hydriodic acid in the presence of sulfuric acid, in an electrolysis cell having an anode and cathode compartment separated by a hydrogen ion permeable membrane, by electrochemically liberating iodine in the anode compartment by anodization of iodide anions, and electrochemically generating hydrogen in the cathode compartment from hydrogen cations that migrate across the membrane.
    Type: Grant
    Filed: April 6, 1983
    Date of Patent: July 17, 1984
    Assignee: Westinghouse Electric Corp.
    Inventor: Nicholas J. Maskalick
  • Patent number: 4457898
    Abstract: There are disclosed manganese compounds of the formulaMn.sup.II LX.sub.2 (Q).sub.n (I)wherein L is a monodentate ligand of the formulaPR.sup.1 R.sup.2 R.sup.3 (II)whereinR.sup.1, R.sup.2, and R.sup.3 are identical or different and are substituted or unsubstituted alkyl, cycloalkyl, alkenyl, alkynyl, or aryl or hydrogen providing that no more than two of the R.sup.1, R.sup.2, and R.sup.3 groups are substituted or unsubstituted aryl groups and that at least one of R.sup.1, R.sup.2 and R.sup.3 is a substituted or unsubstituted alkyl, cycloalkyl, alkenyl, alkynyl, or aryl group,X is a species capable of existing as an anion, e.g., Cl, Br,Q is a solvento molecule capable of forming a chemical bond to the manganese, andn is 1, 2, or 3 solvent donor atoms.The manganese compounds are useful in the separation of a gas such as oxygen, hydrogen, sulfur dioxide, an alkene, and carbon monoxide from fluids containing these gases.
    Type: Grant
    Filed: April 30, 1982
    Date of Patent: July 3, 1984
    Assignee: Facilitated Separations, Ltd.
    Inventors: William E. Hill, Charles A. McAuliffe
  • Patent number: 4436715
    Abstract: This invention relates to production of singlet oxygen and includes means and methods for storage and retrieval thereof as well as continuous production from ground state oxygen. With respect to storage and retrieval of singlet oxygen, certain aromatic acceptor compounds are oxidized to yield solid endoperoxides which, in turn, are decomposed to yield singlet oxygen and regenerate the acceptor. Continuous production of singlet oxygen occurs through irradiation of dye sensitizers with electromagnetic radiation causing activation thereof and excitation of flowing ground state oxygen.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: March 13, 1984
    Assignee: KMS Fusion, Inc.
    Inventors: A. Paul Schaap, George E. Busch, Robert L. Nolen, Jr.
  • Patent number: 4430315
    Abstract: Hypochlorite ions in aqueous solution are catalytically decomposed by the action of a poly-metal spinel of cobalt preferably coated on an inert, stable support. The spinel catalyst may contain dispersed therein, optionally, other "modifier" metal oxides which contribute better adherence of the spinel to the substrate and improve the toughness of the spinel coating. The substituted cobalt spinel conforms generally to the empirical formulaM.sub.x N.sub.y Co.sub.3-(x+y) O.sub.4where zero<x.ltoreq.1; zero.ltoreq.y.ltoreq.0.5; M is at least one metal of Periodic Table Groups IB, IIA, and IIB; N is at least one metal from Group IA; and zero<(x+2y).ltoreq.1.
    Type: Grant
    Filed: December 28, 1981
    Date of Patent: February 7, 1984
    Assignee: The Dow Chemical Company
    Inventor: Donald L. Caldwell
  • Patent number: 4427512
    Abstract: This invention relates to the decomposition of water into oxygen and hydrogen by the effect of ionization by collision among the water molecules. Water of liquid dielectric characteristics is contained within a solid dielectric container having higher dielectric constant relative to that of the water, the solid dielectric also having thermostability. A high voltage is then applied to the solid dielectric, creating a strong enough electric field, exceeding the covalent bond of the liquid dielectric, to decompose the water, while the solid dielectric container maintains its stability.
    Type: Grant
    Filed: August 2, 1982
    Date of Patent: January 24, 1984
    Inventor: Tay-Hee Han
  • Patent number: 4424352
    Abstract: Preparation of palladium(II) bis(hexafluoroacetylacetonate) and adducts derived therefrom are disclosed, said adducts having the formulaPd(F.sub.6 ACAC).sub.2 .multidot.L.sub.nwherein L is a Lewis base selected from certain classes, and n is an integer from 1 to 4. These compounds are useful in preparing catalytic and primer surfaces of elemental palladium.
    Type: Grant
    Filed: June 13, 1980
    Date of Patent: January 3, 1984
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Allen R. Siedle
  • Patent number: 4405594
    Abstract: A system for the thermal dissociation of gaseous matter into its component parts using solar energy and a molecular beam skimmer.
    Type: Grant
    Filed: September 21, 1981
    Date of Patent: September 20, 1983
    Assignee: Chevron Research Center
    Inventor: Walter R. Pyle
  • Patent number: 4402924
    Abstract: A method is described for the preparation of high surface area metal fluorides and metal oxyfluorides comprising reacting high surface area metal oxides with a fluorocarbon vapor wherein the fluorocarbon is selected from the group consisting of CH.sub.4-Q F.sub.Q wherein Q is 1 to 3 and totally or partially fluorinated C.sub.2 -C.sub.6 alkanes, alkenes and alkynes and C.sub.5 -C.sub.6 cyclic alkanes, preferably fluoroform (CHF.sub.3) wherein the metal oxides and the fluorocarbon vapors are contacted at a temperature of from about 300.degree. to about 800.degree. C., for a time sufficient to effect the essentially complete conversion of the metal oxides into metal fluorides or the partial conversion of the metal oxides into metal oxyfluorides.
    Type: Grant
    Filed: November 3, 1980
    Date of Patent: September 6, 1983
    Assignee: Exxon Research and Engineering Co.
    Inventors: Gary B. McVicker, Joseph J. Eggert
  • Patent number: 4391793
    Abstract: Plant for thermochemically dissociating water by solar energy, the improvement therein including at least one substance enclosed in electromagnetic fields and heatable by solar energy absorption to a temperature above 1.100.degree. C., and method of operation of the plant.
    Type: Grant
    Filed: February 8, 1980
    Date of Patent: July 5, 1983
    Assignee: Interatom, Internationale Atomreaktorbau GmbH
    Inventor: Friedrich-Karl Boese
  • Patent number: 4368169
    Abstract: Improved closed-loop pyrochemical processes for the decomposition of water in which at least one of the reaction steps in each process is carried out pyrochemically within the central reaction chamber of a thermonuclear reactor during and immediately after a thermonuclear reaction, and in which one of the reagents in or products of the chamber reaction is a metal having a boiling temperature which is higher than the decomposition temperature of the associated metal oxide. The product of the pyrochemical reaction which includes the metal element is in the condensed phase after completion of the reaction and may thus be easily separated from the remaining gaseous reaction products.
    Type: Grant
    Filed: April 16, 1975
    Date of Patent: January 11, 1983
    Assignee: Texas Gas Transmission Corporation
    Inventors: Ralph H. Kummler, Charles B. Leffert, Robert G. Ozarski, Robert A. Piccirelli, Theodor Teichmann
  • Patent number: 4356163
    Abstract: A process is provided for producing hydrogen by combining an alkali metal with H.sub.2 O to produce hydrogen and an alkali metal hydroxide. The alkali metal hydroxide is then combined with an alkali metal to produce hydrogen and an alkali metal monoxide. The alkali metal monoxide is then processed through a series of reactions to reclaim the alkali metal for reuse in the hydrogen producing steps of the process.
    Type: Grant
    Filed: December 28, 1981
    Date of Patent: October 26, 1982
    Assignee: Davidson Research Ltd.
    Inventor: James G. Davidson
  • Patent number: 4343715
    Abstract: An oxygen carrier, capable of reversibly binding and releasing oxygen, immobilized in a polymer matrix and a method of recovering dissolved oxygen from fluids utilizing the same.
    Type: Grant
    Filed: October 10, 1980
    Date of Patent: August 10, 1982
    Assignee: Duke University
    Inventors: Joseph Bonaventura, Celia Bonaventura
  • Patent number: 4342738
    Abstract: A feasible and economic method of producing hydrogen and oxygen as potential fuels, from water. The process employs as the energy source, sunlight, which is separated into its infrared portion and its ultraviolet light portion. These are concentrated, and in a first stage the infrared is used to heat the water, under pressure to a superheated steam which is contacted with a steam decomposition catalyst in a chamber which is subjected to concentrated ultraviolet light. The result is separation of the water by a combination of thermal energy and photolytic effect into its component elements, hydrogen and oxygen, which can be collected individually and used as fuel sources.
    Type: Grant
    Filed: August 21, 1981
    Date of Patent: August 3, 1982
    Inventor: Paul W. Burgund
  • Patent number: 4342116
    Abstract: An improved method and apparatus for producing dry excited singlet delta oxygen for use in iodine lasers.
    Type: Grant
    Filed: March 11, 1980
    Date of Patent: July 27, 1982
    Assignee: The Garrett Corporation
    Inventors: Allen K. MacKnight, A. Colin Stancliffe
  • Patent number: 4340578
    Abstract: A continuous process for separating oxygen from air by means of a reversible chemical reaction wherein air is reacted with an oxygen acceptor which is subsequently decomposed to yield the product oxygen, and then recycled. The only energy input required is a conventional combustible fuel, and one object of the process is to reduce the amount of fuel energy required for oxygen production.The oxygen acceptor is a molten solution of alkali metal salt comprised predominantly of sodium nitrate and potassium nitrate. An efficient process is achieved with this salt by conducting oxygen absorption in multiple countercurrent stages. The compression energy requirement is minimized by combining isothermal and adiabatic compression, and the recovery of compression energy is maximized by processing the exhaust in the sequence combustion, partial expansion, heat exchange, and completion of expansion. Salt-to-salt heat exchange between reaction regions minimizes the pumping requirements.
    Type: Grant
    Filed: July 15, 1980
    Date of Patent: July 20, 1982
    Inventor: Donald C. Erickson
  • Patent number: 4332775
    Abstract: Hydrogen is produced by dissociation of water in a rotary tubular reactor (1) having a receiving end covered by a cap (2) transparent to solar radiation and provided with a small window (12) connecting a collecting chamber (3) to an opaque insulated heating chamber (5).The tubular reactor (1) constitutes a "black chamber" provided with two series of tubes (7, 8) for heating and dissociating the water. Tubes (7) have a porous section (7a) for separating hydrogen by molecular diffusion according to Knudsen's principle.The concentrated solar radiation entering through the small window (12) falls on one end of the tubes (7, 8) and is largely absorbed by multiple reflections on these tubes.A slow rotation of the reactor (1) enables the bending forces and stresses due to the weight to be compensated.
    Type: Grant
    Filed: July 3, 1980
    Date of Patent: June 1, 1982
    Assignee: Battelle Memorial Institute
    Inventors: Pierre Genequand, Daniel M. Gross
  • Patent number: 4332650
    Abstract: A thermoelectrochemical process for production of hydrogen and oxygen from water providing a closed cycle reactant regenerative process wherein the primary energy input is thermal and a smaller electrical energy input is required for an electrolysis step. The process is a hybrid copper oxide-copper sulfate water splitting cycle using copper oxide reactant in the reactions producing both hydrogen and oxygen providing two phase reaction products in each step.
    Type: Grant
    Filed: January 21, 1981
    Date of Patent: June 1, 1982
    Assignee: Gas Research Institute
    Inventors: Stephen E. Foh, Mono M. Mazumder, Jon B. Pangborn
  • Patent number: 4330523
    Abstract: Water is decomposed into hydrogen and oxygen by reacting it with iodine and sulfurous acid to produce hydrogen iodide and sulfuric acid. The hydrogen iodide is decomposed to produce the hydrogen product and the iodine. The sulfuric acid is decomposed to produce water and sulfur trioxide. The sulfur trioxide is decomposed to produce sulfur dioxide and the oxygen product. The sulfur dioxide is reacted with water to produce the sulfurous acid.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: May 18, 1982
    Assignee: Westinghouse Electric Corp.
    Inventors: Lee E. Brecher, Christopher K. Wu
  • Patent number: 4324777
    Abstract: A material and method for the decomposition/dissociation of water into hydrogen and oxygen is disclosed. The material comprises an amalgam of an alkali metal, mercury, and aluminum combined with a catalytically effective amount of an alloy comprising platinum and at least one metal selected from the group consisting of germanium, antimony, gallium, thallium, indium, cadmium, bismuth, lead, zinc and tin, and with an extender metal to control the rate of dissociation of the water while being non-reactive with the amalgam during dissociation.
    Type: Grant
    Filed: October 16, 1979
    Date of Patent: April 13, 1982
    Inventor: Eugene R. Anderson
  • Patent number: 4323543
    Abstract: Compounds of formula I are useful in the separation of a gas such as oxygen, hydrogen, sulphur dioxide, alkenes and carbon monoxide from a fluid comprising the gas.Mn.sup.11 LX.sub.2 IIn formula I: L represents a monodentate ligand of formula IA and X is a species capable of existing as an anionPR.sup.1 R.sup.2 R.sup.3 IAwherein R.sup.1, R.sup.2 and R.sup.3 which may be identical or different represent substituted or unsubstituted alkyl, cycloalkyl or aryl groups or hydrogen and X represents --Cl, --Br, --I, --CN, --NO.sub.2, --NO.sub.3, --OH, --NCS or --NCO, provided that no more than two of the groups R.sup.1 R.sup.2 and R.sup.3 are substituted or unsubstituted aryl groups and that at least one of the groups R.sup.1, R.sup.2 and R.sup.3 is a substituted or unsubstituted alkyl, cycloalkyl or aryl group.
    Type: Grant
    Filed: May 16, 1980
    Date of Patent: April 6, 1982
    Assignee: National Research Development Corporation
    Inventors: Charles A. McAuliffe, William Levason, Francis P. McCullough
  • Patent number: 4318895
    Abstract: A process and apparatus are provided for producing singlet molecular oxygen, O.sub.2 (.sup.1 .DELTA.). A nitrogen containing base such as NH.sub.3, diethylamine, ethanolamine, propylamine, triethylene diamine, phenethylamine, methyl amine, or dipropylamine is mixed with hydrogen peroxide. Chlorine gas is bubbled through the mixture which reacts therewith to produce singlet molecular oxygen. A preferred embodiment of the reaction is illustrated by the following example:2RNH.sub.2 +H.sub.2 O.sub.2 +Cl.sub.2 .fwdarw.O.sub.2 (.sup.1 .DELTA.)+2RNH.sub.3 Clwhere RNH.sub.2 is an amine.The apparatus for producing the singlet molecular oxygen is a reactor vessel with the hydrogen peroxide and nitrogen containing base solution as a liquid mixture in the bottom thereof through which chlorine gas is bubbled. The vessel is maintained at a pressure range of 1 to 20 Torr, a temperature range of -30.degree. to 35.degree. C., a pH range of 7 to 12, and the O.sub.2 (.sup.1 .DELTA.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: March 9, 1982
    Assignee: McDonnell Douglas Corporation
    Inventors: Ralph J. Richardson, Harvey V. Lilenfeld
  • Patent number: 4314984
    Abstract: The direct fluid contact heat exchange with H.sub.2 SO.sub.4 at about 330.degree. C. prior to high temperature decomposition at about 830.degree. C. in the oxygen release step of several thermochemical cycles for splitting water into hydrogen and oxygen provides higher heat transfer rates, savings in energy and permits use of cast vessels rather than expensive forged alloy indirect heat exchangers. Among several candidate perfluorocarbon liquids tested, only perfluoropropylene oxide polymers having a degree of polymerization from about 10 to 60 were chemically stable, had low miscibility and vapor pressure when tested with sulfuric acid at temperatures from 300.degree. C. to 400.degree. C.
    Type: Grant
    Filed: April 30, 1980
    Date of Patent: February 9, 1982
    Inventors: Robert A. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Frosch, Daniel D. Lawson, Gene R. Petersen
  • Patent number: 4313925
    Abstract: A thermochemical closed cyclic process for the decomposition of water and/or carbon dioxide to hydrogen and/or carbon monoxide begins with the reaction of ceric oxide (CeO.sub.2), titanium dioxide (TiO.sub.2) and sodium titanate (Na.sub.2 TiO.sub.3) to form sodium cerous titanate (NaCeTi.sub.2 O.sub.6) and oxygen. Sodium cerous titanate (NaCeTi.sub.2 O.sub.6) reacted with sodium carbonate (Na.sub.2 CO.sub.3) in the presence of steam, produces hydrogen. The same reaction, in the absence of steam, produces carbon monoxide. The products, ceric oxide and sodium titanate, obtained in either case, are treated with carbon dioxide and water to produce ceric oxide, titanium dioxide, sodium titanate, and sodium bicarbonate. After dissolving sodium bicarbonate from the mixture in water, the remaining insoluble compounds are used as starting materials for a subsequent cycle. The sodium bicarbonate can be converted to sodium carbonate by heating and returned to the cycle.
    Type: Grant
    Filed: April 24, 1980
    Date of Patent: February 2, 1982
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Carlos E. Bamberger
  • Patent number: 4313916
    Abstract: A process is disclosed for the purification of an inert or non-reacting gas such as lower mono-olefins by the removal of trace amounts of reacting impurities such as carbon dioxide therefrom, comprising passing said gas through an essentially non-aqueous liquid solution of alkali or alkaline earth metal hydroxides and/or weak acid salts and certain selected liquid polyhydric alcohols.
    Type: Grant
    Filed: April 17, 1980
    Date of Patent: February 2, 1982
    Assignee: Union Carbide Corporation
    Inventors: Robert A. Jones, Jr., Arthur E. Marcinkowsky, George E. Keller, II
  • Patent number: 4310502
    Abstract: A singlet delta oxygen generator 10 comprises a static or motionless mixer 12 having a gas inlet 14 through which chlorine gas reactant is introduced into the static mixer and a liquid inlet 16 through which the basic sodium hydroxide/hydrogen peroxide solution is introduced. As the reactants pass through static mixer 12, the gaseous products and liquid by-products are formed. The product stream passes through liquid/gas separator 26 wherein the liquid by-product stream is diverted to sump 28 and the gaseous product stream is conveyed to a low volume trap 30. The temperature of trap 30 is maintained at approximately -80.degree. C. so as to solidify and thereby remove any water or hydrogen peroxide vapor which might remain in the product stream. From the low volume trap 30, the product stream is then conveyed to chlorine trap 34 wherein any excess chlorine gas present in the system is retained.
    Type: Grant
    Filed: May 29, 1980
    Date of Patent: January 12, 1982
    Assignee: Rockwell International Corporation
    Inventor: Ross I. Wagner
  • Patent number: 4309403
    Abstract: A thermochemical cyclic process for the production of hydrogen exploits the reaction between sodium manganate (NaMnO.sub.2) and titanium dioxide (TiO.sub.2) to form sodium titanate (Na.sub.2 TiO.sub.3), manganese (II) titanate (MnTiO.sub.3) and oxygen. The titanate mixture is treated with sodium hydroxide, in the presence of steam, to form sodium titanate, sodium manganate (III), water and hydrogen. The sodium titanate-manganate (III) mixture is treated with water to form sodium manganate (III), titanium dioxide and sodium hydroxide. Sodium manganate (III) and titanium dioxide are recycled following dissolution of sodium hydroxide in water.
    Type: Grant
    Filed: November 14, 1980
    Date of Patent: January 5, 1982
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Paul R. Robinson, Carlos E. Bamberger
  • Patent number: 4308248
    Abstract: A material and method to decompose/dissociate water into hydrogen and oxygen. The material comprises a reactive alloy of an alkali metal and aluminum combined with a catalytically effective amount of an alloy comprising a metal selected from the platinum metal family and at least one metal selected from the group consisting of germanium, antimony, gallium, thallium, indium and bismuth.
    Type: Grant
    Filed: January 8, 1980
    Date of Patent: December 29, 1981
    Assignee: Horizon Manufacturing Corporation
    Inventor: Eugene R. Anderson
  • Patent number: 4304628
    Abstract: Combustible synthetic fuel is produced by radiolytic separation of a raw material gas such as CO.sub.2 having a combustible element CO by exposure to neutron radiation in the presence of an intermixed inert gas such as helium. The helium serves both to absorb radiation energy for transfer to the raw material gas thereby increasing available energy and also serves as a dilutant which decreases possibilities of explosive recombination of dissociated elements thereof, and the mixture provides a convenient carrier vehicle from which the desired synthetic fuel element can be separated efficiently by methods known in the existing state of technology.
    Type: Grant
    Filed: February 26, 1979
    Date of Patent: December 8, 1981
    Assignee: Texas Gas Transmission Corporation
    Inventors: Ralph H. Kummler, Charles B. Leffert
  • Patent number: 4297333
    Abstract: Disclosed is a hypochlorite decomposition catalyst of nickel (II) oxide and NiCo.sub.2 O.sub.4 spinel, a hypochlorite destruction process using the catalyst, and a method of synthesizing the catalyst on a porous support.
    Type: Grant
    Filed: July 7, 1980
    Date of Patent: October 27, 1981
    Assignee: PPG Industries, Inc.
    Inventors: Roger A. Crawford, Robert B. Simmons