Iron (fe) Containing Patents (Class 423/594.1)
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Publication number: 20120251844Abstract: An aspect of the present invention relates to magnetic recording powder, which comprises hexagonal ferrite magnetic particles, the hexagonal ferrite magnetic particle comprising 0.5 to 5.0 atomic percent of an Fe substitution element in the form of just a divalent element per 100 atomic percent of a content of Fe and having an activation volume ranging from 1,200 to 1,800 nm3.Type: ApplicationFiled: March 27, 2012Publication date: October 4, 2012Applicant: FUJIFILM CORPORATIONInventors: Nobuo YAMAZAKI, Toshio TADA, Hiroyuki SUZUKI
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Patent number: 8277633Abstract: The present invention is to provide a process for producing a scorodite that can shorten the time required for synthesizing the scorodite, and further can improve the yield of arsenic and iron into the scorodite. Accordingly, a process for producing a crystalline scorodite from an acidic aqueous solution containing pentavalent As and trivalent Fe, wherein the synthesis of the crystalline scorodite is performed after the molar ratio of trivalent Fe to pentavalent As contained in the acidic aqueous solution is adjusted to be equal to or more than 0.9 and equal to or less than 1.1 is provided.Type: GrantFiled: June 4, 2008Date of Patent: October 2, 2012Assignee: JX Nippon Mining & Metals CorporationInventors: Yukio Kimura, Shigeo Katsura
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Patent number: 8268286Abstract: Disclosed herein is a spinel article. The article comprises a spinel material, wherein the spinel material has a monomodal grain size distribution with average grain sizes of less than or equal to about 15 micrometers, and a biaxial flexural strength of greater than or equal to about 300 megapascals when measured by a ring-on-ring flexural test as per ASTM Standard C1499-08. Disclosed herein too is a spinel article manufactured by a method comprising calcining a spinel powder; milling the powder in a milling medium; granulating the powder; screening the powder to a mesh size of about 40 to about 200 mesh; pressing the powder to form an article; burning out organics from the article; sintering the article; and hot isostatically pressing the article.Type: GrantFiled: November 6, 2008Date of Patent: September 18, 2012Assignee: General Electric CompanyInventors: Milivoj Konstantin Brun, Anteneh Kebbede, Sean Michael Sweeney, Timothy James Yosenick
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Patent number: 8263241Abstract: A method for producing a secondary cell according to the present invention includes step (A) of putting a solution having an electrochemically reversibly oxidizable/reducible organic compound and a supporting electrolyte dissolved therein into contact with a positive electrode active material, thereby oxidizing or reducing the positive electrode active material; and step (B) of accommodating the oxidized positive electrode active material and a negative electrode active material in a case in the state of facing each other with a separator being placed therebetween, and filling the case with an electrolyte solution. By oxidizing or reducing the positive electrode active material, lithium ions or anions as the support electrode are incorporated into the positive electrode active material.Type: GrantFiled: April 5, 2007Date of Patent: September 11, 2012Assignee: Panasonic CorporationInventors: Yu Ohtsuka, Nobuhiko Hojo
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Patent number: 8236102Abstract: A method of hydrothermally synthesizing sapphire single crystals doped with trivalent metal ions in a crystal-growth autoclave including a crystal-growth zone and nutrient-dissolution zone in fluid communication with the crystal-growth zone is provided. Implementations of the method including situating within the crystal-growth zone at least one sapphire-based seed crystal and situating within the nutrient-dissolution zone an aluminum-containing material to serve as nutrient. An acidic, trivalent-metal-ion-containing growth solution is introduced into the cavity in a quantity sufficient, at least when heated to a predetermined average temperature, to immerse the at least one seed crystal and the nutrient in the growth solution. The growth solution is selected such that sapphire exhibits retrograde solubility therein and the growth process is carried out while maintaining an interior-cavity pressure within a range between and including each of 3.Type: GrantFiled: January 24, 2009Date of Patent: August 7, 2012Assignee: Solid State Scientific CorporationInventors: Buguo Wang, David F. Bliss, Michael J. Callahan
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Patent number: 8236277Abstract: A process comprises (a) combining (1) at least one base and (2) at least one metal carboxylate salt comprising (i) a metal cation selected from metal cations that form amphoteric metal oxides or oxyhydroxides and (ii) a carboxylate anion comprising from one to four alkyleneoxy moieties, or metal carboxylate salt precursors comprising (i) at least one metal salt comprising the metal cation and a non-interfering anion and (ii) at least one carboxylic acid comprising from one to four alkyleneoxy moieties, at least one salt of the carboxylic acid and a non-interfering, non-metal cation, or a mixture thereof; and (b) allowing the base and the metal carboxylate salt or metal carboxylate salt precursors to react.Type: GrantFiled: December 18, 2007Date of Patent: August 7, 2012Assignee: 3M Innovative Properties CompanyInventor: Timothy D. Dunbar
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Publication number: 20120177902Abstract: Multiferroic articles including highly resistive, strongly ferromagnetic strained thin films of BiFe0.5Mn0.5O3 (“BFMO”) on (001) strontium titanate and Nb-doped strontium titanate substrates were prepared. The films were tetragonal with high epitaxial quality and phase purity. The magnetic moment and coercivity values at room temperature were 90 emu/cc (H=3 kOe) and 274 Oe, respectively. The magnetic transition temperature was strongly enhanced up to approximately 600 K, which is approximately 500 K higher than for pure bulk BiMnO3.Type: ApplicationFiled: September 1, 2011Publication date: July 12, 2012Inventors: Judith L. Driscoll, Quanxi Jia
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Patent number: 8216543Abstract: Methods of making unique water treatment compositions are provided. In one embodiment, a method of making a doped metal oxide or hydroxide for treating water comprises: disposing a metal precursor solution and a dopant precursor solution in a reaction vessel comprising water to form a slurry; and precipitating the doped metal oxide or hydroxide from the slurry.Type: GrantFiled: June 14, 2007Date of Patent: July 10, 2012Assignees: Inframat Corporation, University of HoustonInventors: Huimin Chen, Dennis A. Clifford, Meidong Wang, T. Danny Xiao
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Patent number: 8183174Abstract: A method for preparing a metal-doped ruthenium oxide material by heating a mixture of a doping metal and a source of ruthenium under an inert atmosphere. In some embodiments, the doping metal is in the form of iridium black or lead powder, and the source of ruthenium is a powdered ruthenium oxide. An iridium-doped or lead-doped ruthenium oxide material can perform as an oxygen evolution catalyst and can be fabricated into electrodes for electrolysis cells.Type: GrantFiled: October 15, 2009Date of Patent: May 22, 2012Assignee: California Institute of TechnologyInventors: Thomas I. Valdez, Sekharipuram R. Narayanan
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Patent number: 8153097Abstract: A method for manufacturing ferrite powder comprises a step (a) of causing a precursor, obtained by a liquid-phase reaction method, to pass through a sieve with openings of 2 mm or less, and a step (b) of causing free fall, through the interior of a furnace tube heated to the range 750 to 1250° C. by a heater, of the precursor which has passed through the sieve. In the process of causing free fall through the interior of the furnace tube heated by the heater, ferrite powder, which is a single phase of hexagonal ferrite, is obtained by heating the precursor to a prescribed temperature and holding the precursor at the prescribed temperature.Type: GrantFiled: September 25, 2008Date of Patent: April 10, 2012Assignee: TDK CorporationInventor: Mamoru Satoh
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Publication number: 20120080638Abstract: An aspect of the present invention relates to a magnetic recording medium comprising a magnetic layer comprising ferromagnetic powder and a binder, wherein the ferromagnetic powder is magnetic powder comprised of gathering magnetic particles, the magnetic particles are a reduction product of hexagonal ferrite magnetic particles wherein a ratio Dc/Dtem of a crystallite size Dc obtained from a diffraction peak of a (220) plane to a particle diameter Dtem in a direction perpendicular to a (220) plane as determined by a transmission electron microscope ranges from 0.90 to 0.75.Type: ApplicationFiled: September 23, 2011Publication date: April 5, 2012Applicant: FUJIFILM CORPORATIONInventor: Yasushi HATTORI
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Patent number: 8147779Abstract: To provide a method of generating, with good reproducibility and ease and without complicated operations, scorodite which satisfies the elution standard (in accordance with Notification of No. 13 of Japanese Environment Agency) and which has good filterbility and stability for processing arsenic contained in a non-ferrous smelting intermediate, particularly, for processing a diarsenic trioxide form. A method of processing diarsenic trioxide, including: a leaching step of adding water and alkali to a non-ferrous smelting intermediate that contains diarsenic trioxide to produce slurry, heating the slurry, and leaching arsenic; a solution adjusting step of adding an oxidizing agent to the leachate to oxidize trivalent arsenic to pentavalent arsenic so as to obtain an adjusted solution; and a crystallizing step of converting arsenic in the adjusted solution to scorodite crystal.Type: GrantFiled: July 11, 2008Date of Patent: April 3, 2012Assignee: Dowa Metals & Minning Co., Ltd.Inventors: Mitsuo Abuyima, Yusuke Sato, Hironobu Mikami, Masami Oouchi, Tetsuo Fujita, Masayoshi Matsumoto
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Patent number: 8137844Abstract: A method for manufacturing a cathode active material for a lithium rechargeable battery, including: selecting a first metal compound from a group consisting of a halide, a phosphate, a hydrogen phosphate and a sulfate of Mg or Al; selecting a second metal compound from a group consisting of an oxide, a hydroxide and a carbonate of Mg or Al; combining the first metal compound and the second metal compound to obtain a metal compound, the metal compound containing either Mg or Al atoms; mixing a lithium compound, a transition metal compound and the metal compound to obtain a mixture; and sintering the mixture.Type: GrantFiled: November 16, 2007Date of Patent: March 20, 2012Assignee: Nippon Chemical Industrial Co., Ltd.Inventors: Hidekazu Awano, Minoru Fukuchi, Yuuki Anbe
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Patent number: 8128904Abstract: A process for preparing a multielement oxide composition comprising the element iron in oxidic form, in which the source of the elemental constituent of iron used is an aqueous iron nitrate solution whose preparation comprises the melting of a solid hydrate of iron nitrate.Type: GrantFiled: January 14, 2008Date of Patent: March 6, 2012Assignee: BASF AktiengesellschaftInventors: Andreas Raichle, Holger Borchert, Klaus Joachim Müller-Engel, Ulrich Cremer
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Patent number: 8123973Abstract: A method of manufacturing magnetic material is described hereinafter. Firstly, Fe(NO3)3.9H2O and other metal nitrate compounds are dissolved in an alcohol solvent to form a mixed solution. Secondly, the mixed solution is heated to 60˜100 degrees Centigrade. Next, citric acid is added into the mixed solution for being reacted with each other under the temperature of 60˜100 degrees Centigrade so that can make the alcohol solvent volatilized and further obtain brown solid powder. Lastly, the solid powder is further heated for a period of time so as to obtain the magnetic material having a fluffy powdery form.Type: GrantFiled: December 10, 2008Date of Patent: February 28, 2012Assignee: Cheng Uei Precision Industry Co.Inventor: Chih-Hao Huang
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Publication number: 20120045382Abstract: Scorodite-type iron-arsenic compound particles in which the particle surface layer part comprise an iron-rich layer having an Fe/As molar ratio of at least 1.24. The particles can be obtained in a reaction process of feeding an oxygen-containing gas to an aqueous solution containing an arsenic(V) ion and an iron(II) ion to precipitate a scorodite-type iron-arsenic compound crystal at a pH of at most 2, in which an oxidizing agent is further added to the liquid before the end of the reaction (treatment A). The particles may also be obtained by a method comprising keeping a scorodite-type iron-arsenic compound particle of good crystallinity in contact with an iron ion-containing aqueous solution having a controlled pH of from 2 to 9 at 0 to 90° C. (treatment B). The scorodite-type iron-arsenic particles have good filterability and excellent arsenic release-preventing effect.Type: ApplicationFiled: May 12, 2010Publication date: February 23, 2012Inventors: Kenichi Inoue, Haruhiro Otani, Yoshihiro Hanma
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Patent number: 8110162Abstract: Provided is a method of easily producing scorodite which is stable and has excellent filtering properties with excellent reproducibility and without using complex operations, when processing arsenic that is included in non-ferrous smelting intermediates, and particularly when processing copper arsenic compounds in the form of an intermetallic compound. Scorodite is produced by a leaching step of leaching arsenic from a non-ferrous melting intermediate containing a copper arsenic compound in the form of an intermetallic compound in the presence of a sulfidizing agent and an oxidizing agent, a solution adjusting step of oxidizing trivalent arsenic to pentavalent arsenic by adding the oxidizing agent to the leaching solution, and a crystallizing step of converting the arsenic in the adjusted solution to scorodite crystals.Type: GrantFiled: July 11, 2008Date of Patent: February 7, 2012Assignee: Dowa Metals & Mining Co., Ltd.Inventors: Mitsuo Abumiya, Yusuke Sato, Hironobu Mikami, Masami Oouchi, Tetsuo Fujita, Masayoshi Matsumoto
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Patent number: 8110174Abstract: Disclosed is a reactive working material for use in a process of producing hydrogen by splitting water based on a two-step thermochemical water-splitting cycle through the utilization of solar heat, industrial waste heat or the like, which comprises a ferrite fine powder and a cubic zirconia supporting the ferrite fine powder. This reactive working material makes it possible to prevent scaling off of the ferrite fine powder from the zirconia fine powder due to volumetric changes of the ferrite fine powder during repeated use, and suppress growth of FeO grains due to repetition of melting and solidification when used as a reactive working material for a cyclic reaction under a high temperature of 1400° C. or more.Type: GrantFiled: November 12, 2009Date of Patent: February 7, 2012Assignee: Krosakiharima CorporationInventor: Tatsuya Kodama
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Publication number: 20120027513Abstract: An asphalt concrete pavement containing a wave absorbing material and a maintenance process thereof are provided. The asphalt concrete pavement includes: 1. a coarse materials consisted of small stone with a grain size of 10-15 mm, macadam with a grain size of 5-10 mm and stone chip with a grain size of 0.1-5 mm; 2. fine materials consisted of sand; 3. a mineral powder containing a wave absorbing material which accounts for 10%-100% of the mineral powder by weight percentage. Furthermore, an asphalt concrete material for making asphalt concrete pavement, a mineral powder containing a wave absorbing material, and a use of the mineral powder or wave absorbing material in making the asphalt concrete pavement are provided.Type: ApplicationFiled: April 9, 2010Publication date: February 2, 2012Inventors: Houliang Wang, Wanzhong Guan, Bin Yuan
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Patent number: 8097228Abstract: To provide a method of generating, with good reproducibility and ease and without complicated operations, scorodite which satisfies the elution standard (in accordance with Notification of No. 13 of Japanese Environment Agency) and which has good filterbility and stability for processing arsenic contained in a diarsenic trioxide form. A method of processing diarsenic trioxide, including: a leaching step of adding water to diarsenic trioxide to produce slurry, heating the slurry, and leaching arsenic while adding an oxidant to obtain leachate; a deoxidization step of removing the oxidant so as to obtain an adjusted solution; and a crystallizing step of converting arsenic in the adjusted solution to scorodite crystal.Type: GrantFiled: July 11, 2008Date of Patent: January 17, 2012Assignee: Dowa Metals and Mining Co., Ltd.Inventors: Mitsuo Abumiya, Yusuke Sato, Hironobu Mikami, Masami Oouchi, Tetsuo Fujita, Masayoshi Matsumoto
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Patent number: 8092765Abstract: To extract arsenic from intermediates containing arsenic, to outside the system in stable form. A method of processing non-ferrous smelting intermediate containing arsenic in sulfide form and a non-ferrous smelting intermediate containing arsenic and copper as metal; a solution adjusting step of adding an oxidation agent to the leaching solution to oxidize trivalent arsenic to pentavalent arsenic and obtain an adjusting solution; and a crystallization step of converting arsenic in the adjusted solution to scorodite crystals.Type: GrantFiled: July 11, 2008Date of Patent: January 10, 2012Assignee: Dowa Metals and Mining Co., Ltd.Inventors: Mitsuo Abumiya, Yusuke Sato, Hironobu Mikami, Masami Oouchi, Tetsuo Fujita, Masayoshi Matsumoto
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Patent number: 8088349Abstract: Disclosed is a clean method for preparing layered double hydroxides (LDHs), in which hydroxides of different metals are used as starting materials for production of LDHs by atom-economical reactions. The atom efficiency of the reaction is 100% in each case because all the atoms of the reactants are converted into the target product since only M2+(OH)2, M3+(OH)3, and CO2 or HnAn? are used, without any NaOH or other materials. Since there is no by-product, filtration or washing process is unnecessary. The consequent reduction in water consumption is also beneficial to the environment.Type: GrantFiled: September 11, 2007Date of Patent: January 3, 2012Assignee: Beijing University of Chemical TechnologyInventors: Xue Duan, Dianqing Li, Zhi Lv, Yanjun Lin, Xiangyu Xu
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Publication number: 20110303869Abstract: The present invention relates to cubic or octahedral ferrite nanoparticles and a method for preparing the same. In particular, the present invention is directed to a ferrite nanocube which is superparamagnetic or ferromagnetic, and a method for preparing a ferrite nanocube, comprising heating a mixture of a metal precursor, a surfactant and a solvent.Type: ApplicationFiled: September 25, 2009Publication date: December 15, 2011Applicant: SNU R&DB FOUNDATIONInventors: Taeghwan Hyeon, Dokyoon Kim
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Patent number: 8066969Abstract: This invention relates, in general, to a method of producing magnetic oxide nanoparticles or metal oxide nanoparticles and, more particularly, to a method of producing magnetic or metal oxide nanoparticles, which comprises (1) adding a magnetic or metal precursor to a surfactant or a solvent containing the surfactant to produce a mixed solution, (2) heating the mixed solution to 50-6001 C to decompose the magnetic or metal precursor by heating so as to form the magnetic or metal oxide nanoparticles, and (3) separating the magnetic or metal oxide nanoparticles. Since the method is achieved through a simple process without using an oxidizing agent or a reducing agent, it is possible to simply mass-produce uniform magnetic or metal oxide nanoparticles having desired sizes compared to the conventional method.Type: GrantFiled: November 26, 2004Date of Patent: November 29, 2011Assignee: Industry-Academic Cooperation Foundation, Yonsei UniversityInventors: Jin-Woo Cheon, Jung-Wook Seo, Jae-Hyun Lee
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Patent number: 8048398Abstract: Process for preparing a mixed metal oxide powder, in which oxidizable starting materials are evaporated and oxidized, the reaction mixture is cooled after the reaction and the pulverulent solids are removed from gaseous substances, wherein as starting materials, at least one pulverulent metal and at least one metal compound, the metal and the metal component of the metal compound being different and the proportion of metal being at least 80% by weight based on the sum of metal and metal component from metal compound, together with one or more combustion gases, are fed to an evaporation zone of a reactor, where metal and metal compound are evaporated completely under nonoxidizing conditions, subsequently, the mixture flowing out of the evaporation zone is reacted in the oxidation zone of this reactor with a stream of a supplied oxygen-containing gas whose oxygen content is at least sufficient to oxidize the starting materials and combustion gases completely.Type: GrantFiled: May 9, 2007Date of Patent: November 1, 2011Assignee: Evonik Degussa GmbHInventors: Stipan Katusic, Guido Zimmermann, Michael Kraemer, Peter Kress, Horst Miess
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Patent number: 8034253Abstract: Method and composition for decomposing and detoxifying chemical warfare agents, organic toxic compounds (e.g., pesticides), and for removal of contaminants in materials including fuels. The method and composition are based on ferrate (VI). The ferrate is typically applied to a contaminated surface or volume with a phase transfer catalyst and/or with a carrier.Type: GrantFiled: November 14, 2005Date of Patent: October 11, 2011Assignee: Battelle Memorial InsituteInventors: Bruce F. Monzyk, Russell R. Greene, Chad M. Cucksey, John A. McArthur, F. Michael Von Fahnestock, Steven C. Lorence, Michael J. Murphy, Brian J. Blackstone, Thomas A. Malloy, IV
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Publication number: 20110221302Abstract: Provided is a lead-free dielectric ceramics having a low leakage current value, and a bismuth iron oxide powder as a raw material thereof. The bismuth iron oxide powder includes at least: (A) grains including a bismuth iron oxide having a perovskite-type crystal structure; (B) grains including a bismuth iron oxide having a crystal structure classified to a space group Pbam; and (C) grains including a bismuth iron oxide or a bismuth oxide having a crystal structure that is classified to a space group I23. The dielectric ceramics are made of bismuth iron oxide in which the bismuth iron oxide crystals having the crystal structure classified to the space group Pbam are distributed at a grain boundary of crystal grains of the bismuth iron oxide crystals having the perovskite-type crystal structure.Type: ApplicationFiled: March 10, 2011Publication date: September 15, 2011Applicants: CANON KABUSHIKI KAISHA, FUJI CHEMICAL CO., LTD.Inventors: Hisato Yabuta, Makoto Kubota, Mikio Shimada, Kenji Takashima, Fumio Uchida, Kenji Maeda, Chiemi Shimizu
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Publication number: 20110207069Abstract: The invention relates to a novel type of active mass and to the use thereof in chemical loopping combustion processes. Said active mass contains a spinel which corresponds to the formula AxA?x?ByB?y?O4. The active masses according to the invention have a high oxygen transfer capacity and oxidation and reduction rates which allow their advantageous use in the looping combustion process.Type: ApplicationFiled: October 8, 2009Publication date: August 25, 2011Inventor: Arnold Lambert
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Publication number: 20110200754Abstract: A corrosion resistant primer coating comprises one or more corrosion inhibiting additives; and one or more nonaqueous resins, and the method of making and using the primer coating. The corrosion inhibiting additive comprises metal ferrate(IV) compounds, metal ferrate(V) compounds, metal ferrate(VI) compounds, or a mixture thereof (collectively called the ferrate compound). The ferrate compound has a low solubility in water in the range of about 0.001 ppm to about 2000 ppm at a temperature in the range of about 0° C. to 71° C.Type: ApplicationFiled: October 19, 2009Publication date: August 18, 2011Applicant: BATTELLE MEMORIAL INSTITUTEInventors: Bruce F. Monzyk, Jerad A. Ford, John T. Stropki, David N. Clark, Vinay V. Gadkari, Katherine P. Mitchell
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Patent number: 7968070Abstract: Process for the production of a metal oxide powder having a BET surface area of at least 20 m2/g by reacting an aerosol with oxygen in a reaction space at a reaction temperature of more than 700° C. and then separating the resulting powder from gaseous substances in the reaction space, wherein the aerosol is obtained by atomisation using a multi-component nozzle of at least one starting material, as such in liquid form or in solution, and at least one atomising gas, the volume-related mean drop diameter D30 of the aerosol is from 30 to 100 ?m and the number of aerosol drops larger than 100 ?m is up to 10%, based on the total number of drops, and metal oxide powder obtainable by this process.Type: GrantFiled: February 19, 2009Date of Patent: June 28, 2011Assignee: Evonik Degussa GmbHInventors: Stipan Katusic, Michael Kraemer, Michael Kroell, Peter Kress, Edwin Staab
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Patent number: 7964175Abstract: A procedure for obtaining mixed multimetallic oxides derived from hydrotalcite type compounds, characterized in that the laminar metallic hydroxides obtained are constituted by three or four metallic cations, forming part of the sheets of the hydrotalcite type material represented by the formula: [M(II)1?x?y?zM(II)?xM(III)yM(III)?z(OH)2](An?y+z/n).mH2O. by a process comprising: (1) preparing an aqueous or organic solution containing three or more cations; (2) preparing an alkaline solution; (3) slowly combining solutions (1) and (2) to cause the co-precipitation of the cations in the form of hydroxides; (4) washing the precipitate containing the hydrotalcites with water, until removal of the non-precipitated ions; (5) drying; and (6) calcining the hydrotalcites.Type: GrantFiled: January 6, 2006Date of Patent: June 21, 2011Assignee: Instituto Mexico del PetroleoInventors: Jaime Sánchez Valente, Esteban López Salinas, Manuel Sánchez Cantú, Francisco Hernández Beltrán
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Patent number: 7959885Abstract: A solvothermal process for making inorganic nanoparticles is described. Inorganic nanoparticles can be produced by forming a suspension or solution comprising at least one group II-IV and lanthanide metal inorganic salt in a first medium, disposing the suspension or solution in a sealed chamber having an interior pressure, elevating the interior pressure of the sealed chamber to an initial interior pressure prior to the heating, heating the suspension or solution to a peak temperature higher than the normal boiling point of the first medium, optionally adding a second medium to the suspension or solution after the heating.Type: GrantFiled: February 15, 2008Date of Patent: June 14, 2011Assignee: Nitto Denko CorporationInventors: Sheng Li, Jesse Dan Froehlich, Toshitaka Nakamura, Amane Mochizuki
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Publication number: 20110104469Abstract: Provided here is a method of producing a monolithic body from a porous matrix, comprising: (i) providing a porous matrix having interstitial spaces and comprising at least a first reactant; (ii) contacting the porous matrix with an infiltrating medium that carries at least a second reactant; (iii) allowing the infiltrating medium to infiltrate at least a portion of the interstitial spaces of the porous matrix under conditions that promote a reaction between the at least first reactant and the at least second reactant to provide at least a first product; and (iv) allowing the at least first product to form and fill at least a portion of the interstitial spaces of the porous matrix, thereby producing a monolithic body, wherein the monolithic body does not comprise barium titanate.Type: ApplicationFiled: January 4, 2011Publication date: May 5, 2011Inventors: Richard E. Riman, Vahit Atakan
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Patent number: 7935328Abstract: The present invention provides a method for manufacturing scorodite in which scorodite may be obtained at high production efficiency and a high As concentration ratio. The present invention provides a method for manufacturing crystalline scorodite from acidic aqueous solution containing pentavalent As and trivalent Fe, the method comprising a step for adding a basic sodium compound to the acidic aqueous solution such that the sodium concentration in the acidic aqueous solution becomes larger than 0 g/L and equal to or less than 4 g/L.Type: GrantFiled: January 24, 2008Date of Patent: May 3, 2011Assignee: JX Nippon Mining & Metals CorporationInventors: Yukio Kimura, Shigeo Katsura
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Patent number: 7931886Abstract: According to the present invention there is provided a process for the agglomeration of titania slag particles comprising providing titania slag at a d50 particle size of below 106 ?m; mixing the slag particles with an organic binder; and agglomerating the mixture of the slag particles and organic binder into agglomerated particles with a d50 particle size in the range from 106 ?m to 1000 ?m. The agglomerated particles have a (TiO2 and FeO)/C mass ratio of more than 3.4. The invention also relates to such agglomated slag particles and a chloride process for the production of TiO2 wherein such agglomerated titania slag particles are used.Type: GrantFiled: September 14, 2005Date of Patent: April 26, 2011Assignee: Kumba Resources LimitedInventors: Pieter Adriaan Botha, Gert Hendrik Jacobus Coetzee, legal representative, Deon Bessinger, Benjamin Alexander Dippenaar
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Publication number: 20110091371Abstract: Soluble homo and heterometallic coordination polymers based on the oxalate ligand and method for obtaining spinels from them. Homo or heterometallic coordination polymers comprising at least one oxalate ligand are characterised by comprising also at least one organic molecule that can stabilise extended structures of metal complexes by the formation of supramolecular interactions so that this polymer is substantially water-soluble and insoluble in organic solvents.Type: ApplicationFiled: April 24, 2009Publication date: April 21, 2011Applicant: Universitat De Valencia, Estudi GeneralInventors: Eugenio Coronado Miralles, Carlos Marti Gastaldo, Jose Ramon Galan Mascaros
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Patent number: 7923615Abstract: The present invention relates to a catalyst system for the selective conversion of hydrocarbons into multi-walled carbon nanotubes and hydrogen comprising a compound of the formula: (Ni,Co)FeyOz(Al2O3)w wherein ‘y’ represents the molar fraction of Fe relative to Co and Ni and wherein 0.11?y?9.0, 1.12?z?14.5, and 1.5?w?64.Type: GrantFiled: August 25, 2006Date of Patent: April 12, 2011Assignee: Nanocyl S.A.Inventors: Ricardo Prada Silvy, Christophe Pirlot, Benedicte Culot
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Patent number: 7910084Abstract: A compound oxide manufacturing method includes: dispersing micelles, in each of which an aqueous phase is formed, in an oil phase; producing primary particles of a precursor of compound oxide in the aqueous phases in the micelles; synthesizing secondary particles by causing the primary particles to aggregate; and causing the secondary particles to aggregate by breaking the dispersion state of the micelles, or by causing the micelles to coalesce. In particular, polarization is produced in each of the micelles with the use of a cation having an ionic radius larger than that of a metal ion at least when the secondary particles are synthesized in the micelles.Type: GrantFiled: August 29, 2007Date of Patent: March 22, 2011Assignee: Toyota Jidoshi Kabushiki KaishaInventors: Shinichi Takeshima, Akio Koyama
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Patent number: 7901657Abstract: The invention relates to amphiphilic, nanoscalar particles comprising lipophilic hydrolyzable groups on their surface. The invention also relates to methods for producing amphiphilic, nanoscalar particles and to compositions containing said particles.Type: GrantFiled: February 25, 2005Date of Patent: March 8, 2011Assignee: Leibniz-Institut Fuer Neue Materialien Gemeinnuetzige GmbHInventors: Ertugrul Arpac, Helmut Schmidt, Murat Akarsu
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Patent number: 7897135Abstract: The present invention is generally directed to a novel, economic synthesis of oxide ceramic composites. Methods of the present invention, referred to as carbon combustion synthesis of oxides (CCSO), are a modification of self-propagating high-temperature synthesis (SHS) methods in which the heat needed for the synthesis is generated by combustion of carbon in oxygen rather than that of a pure metal. This enables a more economic production of the ceramic material and minimizes the presence of intermediate metal oxides in the product. The reactant mixture generally comprises at least one oxide precursor (e.g., a metal or non metal oxide, or super oxide, or nitride, or carbonate, or chloride, or oxalate, or halides) as a reactant, but no pure metal. Pure carbon in the form of graphite or soot is added to the reactant mixture to generate the desired heat (upon ignition). The mixture is placed in a reactor and exposed to gaseous oxygen.Type: GrantFiled: September 21, 2005Date of Patent: March 1, 2011Assignee: University of HoustonInventors: Karen S. Martirosyan, Dan Luss
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Patent number: 7897136Abstract: A method is described for the manufacture of hydrotalcites by using at least one compound of a bivalent metal (Component A) and at least one compound of a trivalent metal (Component B), wherein at least one of these components is not used in the form of a solution, characterized in that a) at least one of the Components A and/or B which is not used in the form of a solution, shortly before or during mixing of the components, and/or b) the mixture containing the Components A and B is subjected to intensive grinding until an average particle size (D50) in the range of approx. 0.1 to 5 ?m is obtained, and optionally, after aging treatment or hydrothermal treatment, the resulting hydrotalcite product is separated, dried, and optionally calcinated.Type: GrantFiled: April 30, 2007Date of Patent: March 1, 2011Assignee: Sud-Chemie AGInventors: Max Eisgruber, Jürgen Ladebeck, Jürgen Koy, Hubert Schiessling, Wolfgang Buckl, Herrmann Ebert
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Publication number: 20110033368Abstract: Methods of forming a nanocrystal are provided. The nanocrystal may be a binary nanocrystal of general formula M1A or of general formula M1O, a ternary nanocrystal of general formula M1M2A, of general formula M1AB or of general formula M1M2O or a quaternary nanocrystal of general formula M1M2AB. M1 is a metal of Groups II-IV, Group VII or Group VIII of the PSE. A is an element of Group VI or Group V of the PSE. O is oxygen. A homogenous reaction mixture in a non-polar solvent of low boiling point is formed, that includes a metal precursor containing the metal M1 and, where applicable M2. For an oxygen containing nanocrystal the metal precursor contains an oxygen donor. Where applicable, A is also included in the homogenous reaction mixture. The homogenous reaction mixture is under elevated pressure brought to an elevated temperature that is suitable for forming a nanocrystal.Type: ApplicationFiled: October 3, 2008Publication date: February 10, 2011Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCHInventors: Enyi Ye, Yin Win Khin, Mingyong Han
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Publication number: 20110027167Abstract: There is provided an iron arsenate powder which is produced from an arsenic containing solution and wherein the concentration of arsenic eluted or released from the powder is very low. The iron arsenate powder is a powder of dihydrate of iron arsenate, which has a crystal structure of rhombic system and which has lattice constants of a=0.8950 to 0.8956 nm, b=1.0321 to 1.0326 nm and c=1.0042 to 1.0050 nm at room temperatures and atmospheric pressure. The iron arsenate powder can be produced by a method comprising the steps of: adding ferrous ions to an arsenic containing solution to cause the molar ratio (Fe/As) of iron to arsenic in the solution to be not lower than 1; adding an oxidizing agent to the solution; heating the solution to a temperature of not lower than 70° C. while stirring the solution, to allow a reaction; and carrying out a solid-liquid separation to wash the obtained solid part.Type: ApplicationFiled: August 22, 2008Publication date: February 3, 2011Applicants: DOWA METALS & MINING CO., LTD., TOHOKU UNIVERSITYInventors: Tetsuo Fujita, Takashi Nakamura, Shigeru Suzuki, Kozo Shinoda
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Publication number: 20110008245Abstract: Provided are methods for producing nanostructures and nanostructures obtained thereby. The methods include heating a certain point of a substrate dipped into a precursor solution of the nanostructures so that the nanostructures are grown in a liquid phase environment without evaporation of the precursor solution. The methods show excellent cost-effectiveness because of the lack of a need for precursor evaporation at high temperature. In addition, unlike the vapor-liquid-solid (VLS) process performed in a vapor phase, the method includes growing nanostructures in a liquid phase environment, and thus provides excellent safety and eco-friendly characteristics as well as cost-effectiveness. Further, the method includes locally heating a substrate dipped into a precursor solution merely at a point where the nanostructures are to be grown, so that the nanostructures are grown directly at a desired point of the substrate. Therefore, it is possible to grow and produce nanostructures directly in a device.Type: ApplicationFiled: April 28, 2010Publication date: January 13, 2011Applicant: KAIST (Korea Advanced Institute of Science and Technology)Inventors: Inkyu PARK, Seung Hwan KO
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Publication number: 20110002831Abstract: A sol-gel process for preparing a mixture of metal-oxide-metal compounds wherein at least one metal oxide precursor is subjected to a hydrolysis treatment to obtain one or more corresponding metal oxide hydroxides, the metal oxide hydroxides so obtained are subjected to a condensation treatment to form the metal-oxide-metal compounds, which process is carried out in the presence of an encapsulated catalyst, whereby the catalytically active species is released from the encapsulating unit by exposure to an external stimulus, and wherein the catalytically active species released after exposure to such external stimulus is capable of catalyzing the condensation of the metal-hydroxide groups that are present in the metal oxide hydroxides so obtained.Type: ApplicationFiled: December 15, 2008Publication date: January 6, 2011Inventors: Nanning Joerg Arfsten, Pascal Jozef Paul Buskens, Jens Christoph Thies
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Patent number: 7837972Abstract: A production method of barium titanate according to the present invention comprises steps of preparing powder mixture of barium carbonate powder and titanium oxide powder and firing the powder mixture. The temperature of the powder mixture is raised to firing temperature at 100° C./minute or more in the range of 400° C. to 700° C.; and maximum temperature at firing is 700° C. or more. The present invention aims at providing a production method, wherein grain growth of barium carbonate particle can be controlled in temperature rising process when producing barium titanate by a solid phase reaction of barium carbonate and titanium oxide; and homogeneous barium titanate powder with small particle size can be produced with excellent energy efficiency.Type: GrantFiled: October 27, 2008Date of Patent: November 23, 2010Assignee: TDK CorporationInventors: Shinsuke Hashimoto, Tomoaki Nonaka, Hiroshi Sasaki
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Publication number: 20100266484Abstract: To provide a method of generating, with good reproducibility and ease and without complicated operations, scorodite which satisfies the elution standard (in accordance with Notification of No. 13 of Japanese Environment Agency) and which has good filterbility and stability for processing arsenic contained in a diarsenic trioxide form. A method of processing diarsenic trioxide, including: a leaching step of adding water to diarsenic trioxide to produce slurry, heating the slurry, and leaching arsenic while adding an oxidant to obtain leachate; a deoxidization step of removing the oxidant so as to obtain an adjusted solution; and a crystallizing step of converting arsenic in the adjusted solution to scorodite crystal.Type: ApplicationFiled: July 11, 2008Publication date: October 21, 2010Inventors: Mitsuo Abumiya, Yusuke Sato, Hironobu Mikami, Masami Oouchi, Tetsuo Fujita, Masayoshi Matsumoto
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Publication number: 20100266485Abstract: A process comprises (a) combining (1) at least one base and (2) at least one metal carboxylate salt comprising (i) a metal cation selected from metal cations that form amphoteric metal oxides or oxyhydroxides and (ii) a lactate or thiolactate anion, or metal carboxylate salt precursors comprising (i) at least one metal salt comprising the metal cation and a non-interfering anion and (ii) lactic or thiolactic acid, a lactate or thiolactate salt of a non-interfering, non-metal cation, or a mixture thereof; and (b) allowing the base and the metal carboxylate salt or metal carboxylate salt precursors to react.Type: ApplicationFiled: December 16, 2008Publication date: October 21, 2010Inventor: Timothy D. Dunbar
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Patent number: 7811545Abstract: The present invention is directed to a process for making nanoparticles of metals, metal alloys, metal oxides and multi-metallic oxides, which comprises the steps of reacting a metal salt dissolved in water with an alkali metal salt of C4-25 carboxylic acid dissolved in a first solvent selected from the group consisting of C5-10 aliphatic hydrocarbon and C6-10 aromatic hydrocarbon to form a metal carboxylate complex; and heating the metal carboxylate complex dissolved in a second solvent selected from the group consisting of C6-25 aromatic, C6-25 ether, C6-25 aliphatic hydrocarbon and C6-25 amine to produce the nanoparticles.Type: GrantFiled: November 23, 2005Date of Patent: October 12, 2010Assignee: Seoul National University Industry FoundationInventors: Taeg-Hwan Hyeon, Jong-Nam Park
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Publication number: 20100254875Abstract: A material comprising a plurality of nanoparticles. Each of the plurality of nanoparticles includes at least one of a metal phosphate, a metal silicate, a metal oxide, a metal borate, a metal aluminate, and combinations thereof. The plurality of nanoparticles is substantially monodisperse. Also disclosed is a method of making a plurality of substantially monodisperse nanoparticles. The method includes providing a slurry of at least one metal precursor, maintaining the pH of the slurry at a predetermined value, mechanically milling the slurry, drying the slurry to form a powder; and calcining the powder at a predetermined temperature to form the plurality of nanoparticles.Type: ApplicationFiled: October 5, 2006Publication date: October 7, 2010Inventors: Kalaga Murali Krishna, Sergio Paulo Martins Loureiro, Mohan Manoharan, Geetha Karavoor, Shweta Saraswat