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8173094 Method for producing polycrystalline silicon  
The present invention provides a method for producing polycrystalline silicon. The method for producing polycrystalline silicon comprises the steps of (A), (B), and (C), (A) reducing a chlorosilane...
8007759 Process for preparing aluminium species  
A static ion-exchange process for the preparation of a polynuclear Al species comprising the treatment of an aqueous aluminum chloride solution with a hydroxide-form ion-exchange resin at a...
7906097 Processes for treating aluminium dross residues  
There is provided a process for preparing aluminium chloride comprising leaching aluminium dross residues with H2SO4 so as to obtain a leachate; and hydrochlorinating the leachate so as to obtain...
7883680 Method for purifying silicon  
The present invention provides for methods of purifying silicon, methods for obtaining purified silicon, as well as methods for obtaining purified silicon crystals, purified granulized silicon...
7846232 Method of producing titanium  
A method of producing titanium metal from a titanium-containing material includes the steps of producing a solution of M″TiF6 from the titanium-containing material, selectively precipitating M...
7704470 Removal of contaminants from by-product acids  
The present invention is drawn to a method for removing colloidal titanium dioxide and titanium oxychloride from by-product hydrochloric acid. The method includes adding phosphate ion source and...
7651676 Processes for treating aluminium dross residues  
There is provided a process for preparing aluminium chloride comprising: leaching aluminium dross residues with HCl so as to obtain a mixture comprising a solid and a liquid; and hydrochlorinating...
7591990 Processes for preparing chalcopyrite-type compounds and other inorganic compounds  
There is provided a process for preparing compounds of formula M3M1A2. The process comprises reacting a compound of formula M2M1A2 with a compound of formula M3X2, in the presence of at least one...
7592287 Method for the preparation of high surface area metal fluorides  
The present invention is related to a method for preparing an amorphous metal fluoride of the formula MX+FX−δ comprising the steps of a) providing a precursor, whereby the precursor comprises a st...
7588741 Cyclical vacuum chlorination processes, including lithium extraction  
Cyclical batch processes for halogenation, such as chlorination, of minerals in a fixed bed using a plurality of cycles which include the steps of at least partially evacuating the bed, charging...
7300964 Carbon black  
Carbon black having organic groups, the organic group containing a thiocyanate group. Also described is a process for the production of the carbon black, wherein carbon black is reacted with...
7087209 Method for producing a halide brine  
A method for producing halide brine wherein an alkali and a reducing agent are added to an aqueous fluid having a density greater than 8.30 lb/gal., (0.996 kg/L) water, waste water or sea water for...
6808695 Process for continuously producing aluminum from clays  
A process for purifying solid crude aluminum chloride, containing iron impurities, includes the steps of mixing iron with the crude aluminum chloride and reactively subliming and desubliming the...
6803182 Gallium complex composition, process for doping silver halide emulsion grains with gallium complex composition, and gallium-doped silver halide emulsion  
A gallium halide coordination complex is described of the formula (I): [RxNHy]3GaX6wherein R represents a lower alkyl group of from 1-3 carbon atoms; X is Cl, Br, or I; and x is from 1-3, y is from...
6733738 Method and device for the continuous production of NaAlCl4 or NaFeCl4  
The invention relates to a method and a device for the production of NADCl4 in which D is aluminium or iron, where, in a first reaction step, a melt of aluminium or iron is reacted with chlorine...
6602482 Separation of metal chlorides from their suspensions in chlorosilanes  
A process for separating metal chlorides from a suspension of metal chlorides in chlorosilanes, in which the suspension is filtered under pressure in the absence of air and moisture forming a...
6507020 Halide compound mass spectrometry method and mass spectrometry apparatus  
A mass spectrometry apparatus is provided with an emitter for emitting metal ions, a reaction chamber where the detected gas is introduced and ionized by the metal ions, an aperture for guiding...
6436362 Process for preparing aluminum fluoride  
Process for preparing aluminum fluoride which comprises fluorination of alumina with gaseous HF, characterized in that the alumina is fluorinated with HF at an initial temperature lower than 300° ...
6432392 Antiperspirant salts, and methods of their preparation  
An antiperspirant active salt made by treating an aluminum salt of general formula; Al2(OH)6−aXawherein X is Cl, Br or I, and a is 0.3 to 4.0, with an effective amount of a phosphorus containing m...
6187280 Process for the preparation of aluminum fluoride  
Process for preparing aluminum fluoride having an high surface area and high pore volume comprising the fluorination with HF of alumina having surface area of at least 150 m2 /g and pore volume not...
6153164 Method for producing uranium oxide from uranium tetrafluoride and a phyllosilicate mineral  
A method for producing uranium oxide includes combining uranium tetrafluoride and a phyllosilicate mineral containing a solid oxidizing agent within the mineral's structure having a lower...
6004519 Aluminum promoted hydrogenation of alkylation sludge for aluminum chloride recovery  
The recovery of aluminum chloride from deactivated alkylation catalyst complexes by hydrogenation using hydrogen gas and an aluminum catalyst is disclosed. Using aluminum to catalyze the...
5918106 Method for producing uranium oxide and a non-radioactive fluorine compound from uranium tetrafluoride and a solid oxide compound  
A method for producing uranium oxide includes combining uranium tetrafluoride and a solid oxidizing agent having a lower thermodynamic stability than the uranium oxide; heating the combination...
5861133 Synthetic chalcoalumite compounds and process for producing thereof  
A synthetic chalcoalumite compound represented by the formula (1) (Zna-x2+ Mx2+)Al43+ (OH)b (An-)c.mH2 O (1)wherein M2+ represents at least one of Cu, Ni, Co and Mg; a represents 0.3
5824227 Method for removing fluoride from water  
A process for removing dissolved fluorides from an aqueous stream using at least two reactors wherein the dissolved fluoride containing aqueous feed and an unreacted aluminum containing sludge are...
5776496 Ultrasmall porous particles for enhancing ultrasound back scatter  
This invention relates to the preparation, composition and applications of suspensions of ultra-small, substantially non-aggregated, non-crystalline particles of predetermined uniform size which,...
5741522 Ultrasmall, non-aggregated porous particles of uniform size for entrapping gas bubbles within and methods  
This invention relates to the preparation, composition and applications of suspensions of ultra-small, substantially non-aggregated, non-crystalline particles of predetermined uniform size which,...
5683669 Metal chloride generator and improved process for the production of metal chlorides used in the manufacture of titanium dioxide by the chloride process  
In the preparation of metal chlorides from their elements to be used as additives in processes of making titanium dioxide by the chloride process, a titanium tetrachloride stream is directed to...
5625054 DNA purification by solid phase extraction using fluorinated celite  
The present invention relates to fluorinated surfaces which exhibit sufficient hydrophilicity and sufficient electropositivity to bind DNA from a suspension containing DNA and permit elution of the...
5460795 Crystalline phases of AlFk (OH)3-k and HAlF4  
New crystalline phases of the fluoroaluminum compound AlFk (OH)3-k and processes for their preparation and conversion to conventional phases, as well as isolation of solid HAlF4 are disclosed.
5300273 Process for producing a vapor mixture of titanium tetrachloride and aluminum trichloride  
An improved process is provided for producing titanium tetrachloride vapor admixed with a desired particular amount of aluminum trichloride vapor for use in the production of rutile titanium...
5286473 Process for the production of hydrogen  
In accordance with the invention an alkali metal is reacted with an ionizable hydrogen compound selected from the group consisting of hydrochloric acid, water or mixtures thereof to produce...
5277889 Method for depositing pure metal halide compositions  
Metal halide compositions of enhanced purity are produced by vapor phase deposition via reactions involving organometallic starting materials in a process wherein a carbon getter is provided in the...
5268337 Ceramic oxide powders and the formation thereof  
Ceramic oxide powders and a method for their preparation. Ceramic oxide powders are obtained using a flame process whereby two or more precursors of ceramic oxides are introduced into a counterflow...
5075092 Process for preparation of silane  
A process for continuously preparing silane and a coproduct by reacting a metal hydride such as NaAlH4 with a silicon halide such as SiF4, utilizing, in conducting the reaction, equipment which...
4997454 Method for making uniformly-sized particles from insoluble compounds  
The invention involves a method for making uniformly sized particles from solid compounds. First, a suitable solid compound is dissolved in a suitable solvent. Then, a precipitating liquid is...
4956159 Process for recovering gallium trichloride from gallium-containing waste  
Gallium-containing waste is chlorinated in the presence of gallium trichloride from the beginning. By this procedure, gallium is more efficiently chlorinated and gallium trichloride is more easily...
4925454 Aluminum chloride granules and process to obtain them  
A process for obtaining essentially cone-shaped aluminum chloride granules free of fines from a gas current containing aluminum chloride, comprising contacting said gas current with a surface whose...
4919913 Process for the production of solar silicon  
The process for producing silicon suitable for use in solar cells is improved by reacting a gaseous silicon compound with aluminum wherein a finely dispersed molten surface of pure aluminum or an...
4910009 Ultra high purity halides and their preparation  
The process for purifying a contaminated chloro, bromo or iodo precursor salt of zirconium, hafnium or aluminum by means of providing a molten thermal body of one or more alkali or alkaline earth...
4900521 Process for purifying aluminum chloride  
A process for purifying anhydrous aluminum chloride containing organochlorine impurities, comprising contacting said impure aluminum chloride with a bath containing at least one chloroaluminate for...
4891204 Purification of aluminum chloride  
Aluminium chloride contaminated with iron chloride is purified by contacting it in vapor form with a bed of particles of aluminium metal interspersed with particles of a chemically inert material....
4853205 Supercritical fluid metal halide separation process  
Process of using supercritical fluid to selectively separate, purify and recover metal halides.
4847061 Process for preparation of silane  
A continuous method for preparing silane and a co-product by reacting a metal hydride such as NaAlH4 with a silicon halide such as SiF4. The method involves a reactor loop comprising a primary...
4832934 Process for preparing halogen magnesium alanate and use thereof  
The present invention relates to [Mg2 X3 (Ether)y]+ [AlH4 ]- in which X is halogen, ether is an aliphatic or cyclic ether, and y is from 0 to 6.
4778668 Preparation of silane and metal aluminum halide co-product  
Silicon halides and silicon hydrohalides, such as SiCl4, SiBr4, and SiHCl3 react with alkali metal aluminum hydrides such as NaAlH4 and LiAlH4 in the presence of a hydrocarbon reaction medium;...
4766103 Preparation of 1,4-dichlorobenzene  
1,2-dichlorobenzene is isomerized to 1,4-dichlorobenzene in the presence of a catalyst comprising (a) at least one of AlCl3 and AlBr3 and (b) at least one of iodine, alkaline earth metal halides...
4699770 Production of a purified alumina-silica product and substantially pure aluminum chloride from bauxites, bauxitic clays, kaolinitic clays and mixtures thereof  
The invention is primarily directed to the production of a substantially iron free alumina-silica product and substantially iron free aluminum chloride from bauxites, bauxitic clays and kaolinitic...
4695447 Destruction of inorganic hazardous wastes  
Hazardous waste containing inorganic compounds which contain heavy metals or particular hazardous anionic groups or which are hazardous halides or non-metal oxides or sulfides is contacted with...
4681697 Process for producing solid aluminum chloride compositions  
A process for producing a solid, cold-water soluble, sulfate containing aluminum chloride composition suitable for use as a waste water clarifying agent comprising introducing alkali aluminate,...
Matches 1 - 50 out of 203 1 2 3 4 5 >