Class 423/402 - Utilizing catalyst

Subclass of Class 423 - Chemistry of inorganic compounds
Definition: Processes in which a catalyst is used.
No. of patents: 31
Last issue date: 09/02/2008

Number	Title	Issue Date
7419647	Hydrothermally stable Ag-zeolite traps for small olefin hydrocarbon molecules A hydrocarbon trap comprises an Ag-zeolite which is heated by a unique steaming regimen. ...	09/02/2008
7323343	Nitrogen monoxide, nitrogen dioxide and ozone determination in air An analytical system is provided for determining nitrogen monoxide, nitrogen dioxide and ozone concentrations in air samples. An ultraviolet light source 4 is used to alter the equilibrium between nitrogen dioxide and oxygen on the one hand and nitrogen monox...	01/29/2008
6955799	High temperature decomposition of hydrogen peroxide Nitric oxide (NO) is oxidized into nitrogen dioxide (NO2) by the high temperature decomposition of a hydrogen peroxide solution to produce the oxidative free radicals, hydroxyl and hydroperoxyl. The hydrogen peroxide solution is impinged upon a heated sur...	10/18/2005
6916457	Preparation and use of non-chrome catalysts for Cu/Cr catalyst applications A non-chrome, copper-containing catalyst, Cu—Al—O and method of preparing the same are provided wherein the Cu—Al—O catalyst is prepared by the co-precipitation of copper nitrate (Cu(NO3)2) and sodium aluminate (Na2Al2	07/12/2005
6793903	High temperature decomposition of hydrogen peroxide Nitric oxide (NO) is oxidized into nitrogen dioxide (NO2) by the high temperature decomposition of a hydrogen peroxide solution to produce the oxidative free radicals, hydroxyl and hydroperoxyl. The hydrogen peroxide solution is impinged upon a heated sur...	09/21/2004
6676912	Method for removal of nitrogen oxides from stationary combustion sources A method for removing NOX from gas streams emanating from stationary combustion sources and manufacturing plants utilizes the injection of hydrogen peroxide into the gas stream for rapid gas-phase oxidation of NO to NO2 and water-sol...	01/13/2004
6517797	Process for separation of NOx from N2O in a mixture The present invention is a reactive adsorption process for separating NOx (NO and NO2 /N2 O4) from N2 O in a mixture. The process comprises (A) selectively converting NO to NO2 /N2 ...	02/11/2003
6482376	Process for the catalytic removal of polycyclic aromatic nitro, nitroso and/or amino compounds A process is provided for the catalytic removal of polycyclic aromatic nitro, nitroso and/or amino compounds from the exhaust gas of a combustion system, in particular a diesel engine. The exhaust gas is brought into contact with a catalytic converter whi...	11/19/2002
6210649	Metal oxide catalysts for nitric oxide reduction The invention relates to compositions of matter that can be used in NOx reduction. The compositions include non-zeolitic materials such as Group IIIB metal oxides which have high surface areas to promote high catalytic activity. In particular, ...	04/03/2001
6002059	Process for upgrading natural gas The invention discloses a method for converting methane to higher order hydrocarbons. This method includes synthesizing ammonia from natural gas and nitrogen in the presence of a source of hydrogen. The ammonia is converted to nitrous oxide in the presenc...	12/14/1999
5633170	Method and apparatus for nitrogen oxide analysis A method and apparatus for the chemiluminescent determination of NO/NOx in a sample gas is disclosed in which the NOx portion of the gas stream is catalytically converted in a preconditioned vitreous carbon bed at a relatively low te...	05/27/1997
5368940	Carbon composite material reinforced with carbon fiber and inorganic fiber A carbon composite material reinforced with a carbon fiber and an inorganic fiber. The composite material has a core formed of a carbon fiber-reinforced carbon composite comprising a carbon fiber reinforcement and a carbon matrix, The core is externally c...	11/29/1994
5082642	Method for catalyzing oxidation/reduction reactions of simple molecules This invention relates to a method for catalyzing the reactions QZ+H2 X?QZX (1) and QZX?QZ+H2 X (2) wherein Q=C or N; Z=O or S; X=O, S, NH or NR; R=C1 to...	01/21/1992
4877589	Nitrogen fixation by electric arc and catalyst The fixation of nitrogen by electric arc process is made more efficient by this system which combines a low frequency electric discharge and a catalyst in such a way that an electric arc is formed entirely within a catalyst bed when the reactant gases to ...	10/31/1989
4873061	Fixation of nitrogen by solar energy Mixtures of reactant gases containing nitrogen ar reacted by being raised to very high temperatures at the focal plane of a solar concentrator when radiant energy is absorbed by a metal screen or other porous material in contact with the reactants at the ...	10/10/1989
4824646	Removing NOX from cryogenic systems A process for the removal of NOx impurities from a gas stream which comprises treating the gas stream containing NOx impurities under cryogenic conditions with oxygen and an unsaturated hydrocarbon, removing solid N2 O	04/25/1989
4751068	Method for catalyzing oxidation/reduction reactions of simple molecules This invention relates to a method for catalyzing the reactions and wherein Q=C or N; Z=O or S; X=O, S, NH or NR; R=C1 to C8 alkyl which may be linear, branched or cyclized, which comprises: contacting at least one polydentate nitrogen-containing c...	06/14/1988
4623680	Aqueous epoxy resin dispersions for can coating use Aqueous dispersions useful as can coating compositions are made from the ammonia or amine salt of a carboxyl functional acrylic copolymer blended with phenolplast resins, polyepoxide resins partially reacted with a monofunctional acid and, optionally, an ...	11/18/1986
4522851	Process for coating aqueous dispersion of epoxy resin and blocked polyisocyanate containing chemically incorporated anionic hydrophilic groups The present invention is directed to an aqueously dispersed, heat-curable coating composition comprising (a) a water-dispersible epoxy resin component containing external and/or chemically incorporated non-ionic emulsifiers and (b) a water-dispersible, blocked...	06/11/1985
4474739	Method for removing gaseous pollutants in highly dilute concentrations from air at room temperatures Hydrogen sulfide and hydrogen cyanide are catalytically removed from air at room temperatures. Air containing H2 S and HCN in dilute concentrations is contacted with a dry, activated catalyst formed of palladium (II) and copper (II) salts such ...	10/02/1984
4451436	Nitrogen fixation by plasma and catalyst A system and a method of nitrogen fixation is disclosed in which nitrogen and other gases such as oxygen are electrically activated and reacted on a catalyst-like material to provide a fixed nitrogen product in such a way that the reactant gases are first...	05/29/1984
4426367	Fixation of nitrogen in the presence of water vapor A process for the fixation of nitrogen is disclosed which comprises combining a mixture of nitrogen, oxygen, metal oxide and water vapor, initially heating the combination to initiate a reaction which forms nitrate, but at a temperature and pressure range...	01/17/1984
4351811	Process for reducing an eliminating nitrogen oxides in an exhaust gas The concentrations of NO and NO2 in nitrogen oxides contained in an exhaust gas are adjusted to substantially equal mol concentrations, whereupon the exhaust gas is held in contact with a metallic oxide catalyst together with ammonia. Owing to ...	09/28/1982
4325932	Method of producing nitrous oxide Nitrous oxide can be produced by reacting nitric oxide and carbon monoxide in the presence of a catalyst in an anhydrous system. The preferred catalyst is a mixture of PdCl2, CuCl2 and LiCl, which is dissolved in anhydrous methanol....	04/20/1982
4308246	Fixation of nitrogen using silicon oxide catalysts A process for the fixation of nitrogen comprising, combining a gaseous nitrogen and oxygen at a total pressure of above 100 atmospheres with a solid oxide which can produce a nitrate, in the presence of an oxide of silicon catalyst for the acceleration of...	12/29/1981
4271137	Fixation of nitrogen A process for the fixation of nitrogen comprising, combining a gaseous nitrogen and oxygen at a total temperature of about 100 atmospheres with a solid oxide which can produce a nitrate, in the presence of a catalyst for the acceleration of a reaction bet...	06/02/1981
4267027	Process and apparatus for the preparation of nitrogen oxides The present invention relates to a process for the preparation of nitrogen oxides (NO and NO2) by the reaction of nitrogen and oxygen in a plasma furnace. According to this process, a plasma of oxygen and nitrogen is introduced into the reactio...	05/12/1981
4160013	Process for the oxidation of nitric oxide to nitrogen dioxide A process for the oxidation of nitric oxide to nitrogen dioxide in the presence of elemental nitrogen with minimal oxidation thereof which comprises combining the nitric oxide with a predetermined amount of oxygen containing gas to give at least 1% stoich...	07/03/1979
4102986	Process for the continuous manufacture of nitrous oxide Nitrous oxide (laughing gas) is produced by continuous decomposition of ammonium and nitrate ions fed into an aqueous, strongly acid reaction liquor containing chloride ion as catalyst. N2 O and water are continuously removed. Preferred paramet...	07/25/1978
4081517	Nitrogen oxide conversion process The present invention provides a novel process for treating a fluid stream carrying various components including nitrogen oxides, wherein the stream is subjected to oxidative reactions under gaseous and absorptive conditions to convert a portion of the ni...	03/28/1978
3949057	Air pollution control of oxides of nitrogen Process for removing nitrogen oxides from a gaseous mixture comprises contacting the mixture with an aqueous liquid in the presence of a knitted wire mesh packing material of stainless steel containing at least 8% Ni and having a diameter of from 0.003 to...	04/06/1976

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Class 423/402 - Utilizing catalyst