Class 205/498 - Halogen containing

Subclass of Class 205 - Electrolysis: processes, compositions used therein, and methods of preparing the compositions
Definition: Subject matter wherein the metal containing compound produced
No. of patents: 28
Last issue date: 04/22/2008

Number	Title	Issue Date
7361276	Apparatus and method for osmotic membrane distillation A method of enhancing the concentration of a first inorganic compound in a first aqueous solution of a first process of a heavy chemical plant, the method comprising (a) feeding the first solution having the first compound at a first concentration and a first water ...	04/22/2008
7238266	Method and apparatus for fluorine generation and recirculation The invention relates to apparatus and methods for generating and recycling fluorine. The applicants recognized that a fluorine separator, used either alone or in combination with a plasma generator can produce sufficient quantities of fluorine at its point of use f...	07/03/2007
7238278	Apparatus for purifying water The invention relates to a method for purifying water by forming in an electrolytic cell molecular halogen, hypohalic acid, hypohalite ions or combinations thereof, from halide ions dissolved in the water; and dissolving one or more soluble metal salts in the water ...	07/03/2007
6929786	Method for separating zirconium and hafnium tetrachlorides with the aid of a melted solvent A method of separating zirconium and hafnium tetrachlorides using a solvent comprising firstly an alkaline metallic solvent comprising a salt made up of an alkali metal chloride and an acidic metal chloride A, for example a chloroaluminate or an alkaline chloroferra...	08/16/2005
6440293	Electrode and electrolyte for use in preparation of nitrogen trifluoride gas, and preparation method of nitrogen trifluoride gas by use of them An electrode for electrolyzing an electrolyte comprising an ammonium fluoride (NH4 F)-hydrogen fluoride (HF)-containing molten salt and having a composition ratio (HF/NH4 F) of 1 to 3 to prepare a nitrogen trifluoride (NF3...	08/27/2002
6428677	Bromide removal A chlorination system in which brine is converted to sodium hypochlorite by an electrolyser. Brine (1) fed to the electrolyser (3) is passed through a filter (2) which is capable of adsorbing bromine or hypobromous acid. Some of the sodium hypochlorite pr...	08/06/2002
6395153	Diaphragm cell The present invention pertains to electrolytic diaphragm cells, particularly for the electrolysis of brine to produce chlorine and caustic. The innovation resides generally in the discovery that electrolytic cell operation can be desirably enhanced by com...	05/28/2002
6039861	Electrochemical reactions The invention provides an electrochemical reaction wherein a controlled amount of a first reagent is generated electrochemically at an electrode in electrical contact with a solution of an electrochemically inert salt, comprising applying a suitable elect...	03/21/2000
5840171	Electrochemical reactions The invention provides an electrochemical reaction wherein a controlled amount of a first reagent is generated electrochemically at an electrode in electrical contact with a solution of an electrochemically inert salt, comprising applying a suitable elect...	11/24/1998
5716512	Method for manufacturing salts of metals Process and equipment for manufacturing salts of metals, particularly nickel hypophosphite, are disclosed....	02/10/1998
5709791	Method for producing oxygen and hydrogen There are provided a method of producing a hydrogen halide and oxygen by reacting water with a halogen using activated carbon as a catalyst, a method of producing hydrogen by thermal decomposition of a hydrogen halide using chromium oxide as a catalyst, a...	01/20/1998
5565080	Preparation of anhydrous magnesium chloride-containing melts from hydrated magnesium chloride In accordance with the present invention, there is now provided a process for the production an anhydrous magnesium chloride-containing melt or electrolyte containing very low levels of MgO, typically less than 0.2% by weight MgO, directly from hydrated m...	10/15/1996
5423960	Method and apparatus for manufacturing iodine-free iodides An electrochemical process and equipment for preparing iodides, e.g. hydriodic acid (HI), iodide salts and other iodide compounds, substantially free of iodine, are disclosed....	06/13/1995
5264088	Catalytic composition for the polymerization of olefins and its process of preparation Process for the preparation of a catalytic composition for the polymerization of olefins. At least partial electrochemical oxidation of aluminum in a solvent of ଱, ω-dihalogeno-alkane and simultaneously the electrochemical reduction of a compound o...	11/23/1993
5254224	Method for increasing the molar ratio of aluminum to chlorine in polyaluminum chloride solutions Disclosed is a method for increasing the molar ratio of aluminum to chlorine in a polyaluminum chloride solution by the electrochemical dissolving of aluminum, including contacting a polyaluminum chloride solution having a molar ratio of aluminum to chlor...	10/19/1993
5181993	Process for converting ferrous ions to ferric ions Enclosed herein is an apparatus for converting an ionic valence number which comprises a gas permeable membrane comprising a catalyst-supporting reaction layer and a hydrophobic gas permeable layer having fine pores; a solution chamber retaining an aqueou...	01/26/1993
5009751	Process for separation of hafnium tetrachloride from zirconium tetrachloride Separation of hafnium tetrachloride from zirconium tetrachloride by introducing zirconium tetrachloride containing about 2-4 wt percent of hafnium tetrachloride into an electrolytic cell filled with a molten salt and dissolving it to make an electrolytic ...	04/23/1991
4992148	Process for the electrolytic manufacture of alkali metal sulphide Process for the manufacture of alkali metal sulphide, in which an electrolysis cell is used in which a membrane which is selectively permeable to cations separates an anode chamber containing an anode from a cathode chamber containing a cathode, an electr...	02/12/1991
4865694	Electrochemical decomposition of complexes of zirconium or hafnium This is an improved method for separating hafnium from zirconium of the type where a complex of zirconium and hafnium chlorides and phosphorus oxychloride is prepared from zirconium-hafnium chloride and the complex is introduced into a distillation column...	09/12/1989
4776930	Process for the preparation of potassium nitrate A process is disclosed for the preparation of potassium nitrate by means of the reaction of nitric acid with potassium carbonate, wherein potassium carbonate is obtained by means of an electrochemical process....	10/11/1988
4707224	Device and method for fluorinating compounds A method and an apparatus are described for fluorinating substances utilizing a fluoride-ion valve....	11/17/1987
4704259	Removal of chromium from cell liquor Soluble hexavalent chromium values are removed from aqueous chlorate solutions by employing a critical effective ratio of OH- :Cr2 O7= ions of at least 3:1 in the aqueous chlorate solution and by employing a di...	11/03/1987
4330377	Electrolytic process for the production of tin and tin products Tin ions are provided to the electrolyte-containing cathode compartment of an electrolysis cell in which the anode and cathode compartments are separated by a cationic permselective membrane. The anolyte is generally a mineral acid or tin salt thereof. Op...	05/18/1982
4220505	Separation of hydrogen sulfide from fluid streams A liquid solution containing a tri-halide from the halogen group consisting of bromine and iodine is passed in countercurrent flow with fluids containing sulfur compounds, including hydrogen sulfide, within a tower. The tri-halide solution removes selecte...	09/02/1980
4162206	Separation of iodine from mercury containing scrubbing solutions Radioactive iodines can be recovered from a nitric acid scrub solution containing mercuric nitrate by passing a current through the scrub solution to react the iodine with the mercuric nitrate to form mercuric iodate which precipitates out. The mercuric i...	07/24/1979
4082631	Absorption of chlorine gas A process for the absorption of chlorine from a chlorine-containing gas, comprising contacting the chlorine-containing gas with an aqueous solution containing about 1 to 400 g/l of iron(II) chloride and at least one of copper (I) and copper(II) ions, the ...	04/04/1978
3980751	Ion exchange chromate removal The present invention relates to removal of chromate from an aqueous solution of an alkali metal chlorate and chloride, particularly sodium chlorate and sodium chloride in a selected ratio which has been obtained by the electrolysis of an aqueous solution...	09/14/1976
3979498	Recovery of cesium and palladium from nuclear reactor fuel processing waste A method of recovering cesium and palladium values from nuclear reactor fission product waste solution involves contacting the solution with a source of chloride ions and oxidizing palladium ions present in the solution to precipitate cesium and palladium...	09/07/1976

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Class 205/498 - Halogen containing