Class 423/627 - Reacting metallic aluminum with water or water vapor

Subclass of Class 423 - Chemistry of inorganic compounds
Definition: Processes in which the preparation of the compound includes
No. of patents: 32
Last issue date: 10/21/2008

Number	Title	Issue Date
7438977	Gibbsite type aluminum hydroxide particles having high oil absorption The present invention provides gibbsite type aluminum hydroxide particles having a primary particle diameter of from 0.01 μm to 0.3 μm and a DOP oil absorption of from 90 mL/100 g to 300 mL/100 g. ...	10/21/2008
7390343	Drinking water filtration device The invention is a device for purifying drinking water that has at least one fibrous structure. Preferably, there is an upstream and downstream fibrous structure. Each fibrous structure is a mixture of nano alumina fibers and second fibers arranged in a matrix to cr...	06/24/2008
7311752	Electrostatic air filter The invention is a filter for gaseous media in which nano alumina fibers and second fibers are arranged in a matrix to create asymmetrical pores. The filter is a high efficiency, high capacity particulate filter that intercepts pathogens and other particulate matter...	12/25/2007
7115243	Method for preparing α-alumina nano powder The present invention relates to a preparation method of α-alumina nano powder, and more particularly to a preparation method of α-alumina nano powder that has a uniform particle shape and size distribution, is capable of being produced at a low temperature, and c...	10/03/2006
7022305	Nanoscale corundum powders, sintered compacts produced from these powders and method for producing the same Nanoscale corundum powders are obtained by first producing an Al2O3 precursor by adding seed crystals to an aqueous solution of an aluminium compound and adding a base and then converting the Al2O3 precursor into corundum ...	04/04/2006
7008609	Method for producing hydrogen gas utilizing mechano-corrosive reaction There is provided a method of producing hydrogen gas serving as fuel for a portable fuel cell, whereby hydrogen gas can be provided easily, safely, and at a low cost. To that end, the method of producing hydrogen gas comprises the steps of causing friction and mecha...	03/07/2006
6972096	Chemical-mechanical polishing process A chemical-mechanical polishing process for planarizing at least one or more of thin films formed on a substrate, wherein the chemical-mechanical polishing is performed using a slurry containing abrasive particles mainly made of sialon or boehmite. This process is a...	12/06/2005
6926875	Porous material process of producing the porous material, catalyst for purifying exhaust gas comprising the porous material, method of purifying exhaust gas Disclosed are a porous material comprising particles without substantial fibrous structure and having pores, the pores having a mean pore diameter in a meson-pore region, sharp pore size distribution, and at least a part of the pores being connected three-dimensiona...	08/09/2005
6838005	Nanosize electropositive fibrous adsorbent Aluminum hydroxide fibers approximately 2 nanometers in diameter and with surface areas ranging from 200 to 650 m2/g have been fount to be highly electropositive. When dispersed in water they are able to attach to and retain electronegative particles. Whe...	01/04/2005
6638493	Method for producing hydrogen The process for producing hydrogen gas according to the present invention consists of reacting aluminum with water in the presence of sodium hydroxide as a catalyst. In one aspect of the present invention, there is provided a process for producing hydroge...	10/28/2003
6511642	Porous material, catalyst, method of producing the porous material and method for purifying exhaust gas Disclosed are a porous material comprising particles without substantial fibrous structure and having pores, the pores having a mean pore diameter in a meso-pore region, sharp pore size distribution, and at least a part of the pores being connected three-...	01/28/2003
6506360	Method for producing hydrogen The method for producing hydrogen according to the present invention consists of reacting aluminum with water in the presence of sodium hydroxide as a catalyst. The apparatus for carrying out the method uses the pressure and temperature of the reaction to...	01/14/2003
6403007	Method for manufacturing plate boehmite Method for manufacturing a plate boehmite and a plate alumina having high catalytic activity. The plate boehmite is prepared by subjecting at least one kind of an alkaline earth metal compound, which is selected from calcium, strontium and barium, and alu...	06/11/2002
6143816	Fire retardant plastic mixture and method of producing a filler material A fire-retardant plastic mixture contains 55%-75% by weight of boehmite which has an orthorhombic crystal structure and has the general formula AlOx (OH)3-2x with x-values ranging between 0.8 and 0.99, and has a mean grain diameter d...	11/07/2000
6129904	Aluminum oxide masses with very narrow pore radius distribution An aluminum oxide mass characterized by a specific surface area greater than or equal to 70 m2 /g and a narrow pore radius distribution, with at least 90% of the pore radii being approximately 0.5 to 2.5 nm, preferably approximately 1.7 to 2.2 ...	10/10/2000
5989515	Process for producing an acidic aqueous alumina sol A process for producing a stable acidic aqueous alumina sol containing 50 to 300 nm of elongate secondary particles which are elongated in only one plane and formed by edge-to-edge coagulation of rectangular plate-like primary particles having a length of...	11/23/1999
5964936	Oxidized colored aluminium pigments, process for their production and their use The invention concerns oxidised aluminium or aluminium alloy pigments having a content of metallic aluminium of not more than 90% by weight with respect to the total weight, wherein the pigments are colored, flake-like, shiny and non-agglomerated, a proce...	10/12/1999
5435986	Method for preparing high purity aluminum hydroxide An improved process for making high purity aluminum hydroxide [Al(OH)3.3H.sub.2 O] of the hydrargillite form containing the steps of: (a) adding a non-powdered aluminum solid, preferably aluminum ingots, into a hot water bath at about 70° C. t...	07/25/1995
5290535	Process for recycling saltcake Saltcake generated by the aluminum industry is completely recycled through a process that simultaneously liberates the contained aluminum metal and dissolves the soluble salt fluxes to recover aluminum metal, aluminum oxide and salt fluxes by temperature ...	03/01/1994
5225229	Aluminum hydroxide production A method for the production of aluminum hydroxide, including reacting water in the liquid phase and aluminum at a pH above about 12.4. In this pH range, aluminum hydroxide is produced at acceptable rates both for aluminum surface areas above 75,000 mm	07/06/1993
5026612	Structures fabricated from aluminum components and processes involved in making these structures A process for forming a structure of aluminium components comprises pre-treating aluminium sheet to produce an inorganic non-metallic surface coating thereon, forming the pre-treated sheet to produce components of desired shape and applying adhesive to th...	06/25/1991
4822592	Producing alpha alumina particles with pressurized acidic steam Alumina particles having average particle size of about 1-20 microns are converted to alpha alumina in a steam-fluidized bed maintained at about 380°-600° C. and a pressure greater than about 1000 psig. Acidifying the steam reduces average crystallite s...	04/18/1989
4755374	Aluminum hydroxide production A method for the production of aluminum hydroxide, including reacting water in the liquid phase and aluminum at a pH above about 12.4. In this pH range, aluminum hydroxide is produced at acceptable rates both for aluminum surface areas above 75,000 mm	07/05/1988
4746503	Method of treating alumina to increase slurry life A process for treating dry, particulate alumina for use in preparing alumina slurries which are resistant to gellation in which the particulate alumina is contacted with a carbon dioxide rich gaseous medium for a suitable time....	05/24/1988
4732741	Method of making beta"-alumina A method of making beta"-alumina comprises dispersing in a precursor of aluminum oxide a member of the group comprising sodium oxide and its precursors, and dispersing in the precursor of aluminum oxide a spinel stabilizer which is a member of the group c...	03/22/1988
4615875	Process for preparing high purity alpha-alumina High purity alumina with a low sodium content and with a friable, easily ball milled structure is produced in this invention through a modified sol-gel procedure which includes digestion of the contaminant containing aluminum metal with hydrochloric acid ...	10/07/1986
4447351	Preparation of alumina hydrosol from aluminum sulfate solution The present invention relates to a method of preparing an alumina hydrosol from an aluminum sulfate solution. The subject method comprises the steps of admixing a stoichiometric amount of a metal selected from the group consisting of calcium, strontium an...	05/08/1984
4348366	Process for the production of alumina and alumina compounds from wastes A process for the recovery of substantially all of the aluminum from aluminum bearing waste products which includes a method for the commercial production of alumina and compounds of alumina....	09/07/1982
4291011	Method for production of aluminum oxide High purity aluminum oxide is produced by continuously reacting high purity metallic aluminum, either solid or liquid, with high purity oxygen, present in stoichiometrically excessive amount, within a vertically oriented cylindrical vessel closed at the t...	09/22/1981
4252776	Aluminum dross processing There is disclosed a method for the elimination of the chief impurities in aluminum dross tailings. The dross tailings, which are chiefly particles of aluminum oxide, are suspended in an aqueous slurry and the slurry is heated to a temperature from 185°-...	02/24/1981
4151267	Process for producing alumina Pure alumina is produced from aluminum metal by steps of activation by stripping the oxide layer in an acidic aqueous medium; washing in a neutral medium; reacting in a neutral, acidic or alkaline medium to give hydrated alumina; and igniting the hydrated...	04/24/1979
3962407	Process of preventing corrosion of a metal walled system containing molten fluoride A method of manufacturing an airtight-sealed system comprising one or more molten alkalifluorides in the operating condition. The corrosive action of oxygen present in the melt is prevented by adding metallic aluminium and/or zinc to the melt....	06/08/1976

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Class 423/627 - Reacting metallic aluminum with water or water vapor