Titanium Tetrahalide Patents (Class 423/612)
  • Patent number: 10344107
    Abstract: A styrene based water soluble polymer containing pendant sulfonated calix[4]arene groups has been synthesized by using free radical polymerization combined with post-polymerization sulfonation chemistry. The monomer 25-(4-vinylbenzyl)-26, 27, 28-hydroxy-calix[4]arene was prepared in 3 steps: (1) reduction of 4-vinyl benzoic acid to the respective alcohol (2) formation of the bromide by the Appel reaction and (3) synthesis of the respective ether by Williamson O-alkylation reaction with calix[4]arene. Polymerization was accomplished by azobisisobutyronitrile (AIBN) initiated free radical polymerization technique. Electro-responsive properties of the sulfonated polymer were studied wherein a response to electrochemical stimulus is observed when guest molecules of methyl viologen are incorporated with polymerized 25-(4-vinylbenzyl)-26, 27, 28-hydroxy-calix[4]arene.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: July 9, 2019
    Assignee: NORTH CAROLINA CENTRAL UNIVERSITY
    Inventors: Darlene K. Taylor, Uddhav Balami
  • Patent number: 10193133
    Abstract: The present invention relates to a method for preparing metal oxide nanoparticles and metal oxide nanoparticles prepared thereby. The method includes: dipping a cathode and an anode formed of a metal for forming oxide, in an inorganic electrolyte solution containing halogen salt, and applying voltage to the anode and the cathode to form, on the anode, metal oxide forming an anode surface. According to a method of the present invention, disadvantages of typical nanoparticle synthesizing methods may be solved to cheaply and rapidly manufacture nanoparticles having various structures through a single process without using a surfactant. In practicing a method of the invention, metal oxide nanoparticles may be rapidly formed, nanoparticles having excellent crystallinity may be produced, and factors of the anodizing method, such as voltage, temperature, an electrolyte, and an electrolyte concentration may be changed to simply adjust a shape of the nanoparticles.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: January 29, 2019
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNLOGY
    Inventors: Sung Oh Cho, Ali Ghafar, Yang Jeong Park
  • Patent number: 9242871
    Abstract: The present invention relates to a nanoparticulate composition comprising nanoparticles with a particle-size distribution of d90?10 ?m, and optionally a surface-active agent. The present invention further relates to a method for the production of such a nanoparticulate composition.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: January 26, 2016
    Assignee: Johnson Matthey PLC
    Inventors: Michael Holzapfel, Andreas Laumann, Peter Bauer, Christian Vogler, Guoxian Liang
  • Patent number: 9040444
    Abstract: A semi-continuous process and system thereof, for the synthesis of a narrow particle size distribution Zeigler Natta procatalyst for use in the manufacture of polyolefins. The process comprises: (a) mixing a reaction mixture containing a titanium compound; (b) charging a first reactor with said reaction mixture; (c) removing excess reactants from said first reactor as a filtrate; (d) feeding said filtrate to at least one further reactor; and continuously removing excess reactants from said at least further reactor.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: May 26, 2015
    Assignee: Reliance Industries Limited
    Inventors: Kamlesh Singala, Saurabh Singh, Virendrakumar Gupta
  • Publication number: 20150078985
    Abstract: TiO2 based scrubbing granules, and methods of making and using such TiO2 based scrubbing granules are described. TiO2-based scrubbing granules include granulated TiO2 and about 0.5% to about 20% dry weight inorganic salt binder. Other TiO2 based scrubbing granules include unsintered granulated TiO2 and about 0.5% to about 20% dry weight inorganic salt binder. Inorganic salt binder include sodium aluminate. Methods of making TiO2 based scrubbing granules include i) combining TiO2 particles with inorganic salt binder to form TiO2-binder mixture comprising from about 0.5% to about 20% dry weight binder; ii) granulating the TiO2-binder mixture; and drying the granulated TiO2-binder mixture to form TiO2-based scrubbing granules.
    Type: Application
    Filed: April 26, 2013
    Publication date: March 19, 2015
    Inventors: Venkata Ramana Reddy Sama, Kit Stacey Eremchuk, Mark D. Pomponi, Gabor Feher, Alexandre Jean Fines
  • Patent number: 8926938
    Abstract: A method of manufacturing crystalline titanium dioxide (TiO2) powder, a method of a negative active material, and a negative active material and a rechargeable lithium battery including the crystalline titanium dioxide (TiO2) powder are provided. The method of manufacturing the crystalline titanium dioxide powder may include: preparing a titanyl chloride (TiOCl2) aqueous solution by adding titanium tetrachloride (TiCl4) to water at a temperature ranging from 0° C. to 10° C.; adding alcohol, urea, and a sphere-shaping agent to the titanyl chloride aqueous solution to prepare a mixture; and hydrothermally synthesizing the mixture under a pressure ranging from 1.5 atm to 5 atm at a temperature ranging from 80° C. to 155° C.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: January 6, 2015
    Assignee: IUCF-HYU (Industry-University-Cooperation Foundation Hanyang University)
    Inventors: Yang-Kook Sun, Ce Jin, Hun-Gi Jung, Sung-Woo Oh
  • Publication number: 20140363367
    Abstract: A process for the preparation of Li4Ti5O12 by a novel, low-cost route from titanium tetrachloride is described. In the process disclosed herein, conditions have been discovered which result in the preparation of Li4Ti5O12 having a high purity and a high surface area. These properties are useful for good performance in a lithium ion battery.
    Type: Application
    Filed: June 5, 2013
    Publication date: December 11, 2014
    Inventor: SANG-HWAN KIM
  • Publication number: 20140363368
    Abstract: The present invention relates to titanium dioxide nanoparticles, titanate, lithium titanate nanoparticles, and preparation methods thereof. According to the present invention, titanium dioxide nanoparticles having a quasicrystalline phase corresponding to an intermediate form between a crystalline phase and an amorphous phase may be provided.
    Type: Application
    Filed: December 27, 2012
    Publication date: December 11, 2014
    Inventors: Dong Hyun Kim, Jhi-Yong Kim, Juno Seok, Seok-Mo Chung, Jong Son
  • Publication number: 20140296060
    Abstract: The invention provides a photocatalytic structure comprising a carrier and a photocatalytic film formed on the carrier, in which the photocatalytic film comprises titanium dioxide with shape of rhombus particles. The titanium dioxide particle has anatase structure. The titanium dioxide particle is rhombus with a major axis 10-15 nm and minor axis 3-6 nm. The photocatalytic film which is formed by titanium dioxide with shape of rhombus particles has a high overall photocatalytic activity so that the effects of stainproofing and self-cleaning can be improved. The invention also relates to a method for manufacturing photocatalytic sol-gels.
    Type: Application
    Filed: March 28, 2014
    Publication date: October 2, 2014
    Applicant: JM MATERIAL TECHNOLOGY INC.
    Inventor: Yu-Wen CHEN
  • Publication number: 20140227168
    Abstract: This disclosure relates to a process for producing titanium dioxide, comprising: a) reacting an alloy comprising a metal selected from the group consisting of aluminum, titanium and mixtures thereof, wherein either aluminum or titanium is a major component of the alloy, and an element selected from the group consisting of Li, Be, B, Na, Mg, Al, P, S, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Rb, Sr, Y, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Te, Cs, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb, and Bi, with chlorine gas to form chlorides of aluminum, titanium or mixtures thereof and chlorides of the element selected from the group consisting of Li, Be, B, Na, Mg, Al, P, S, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Rb, Sr, Y, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Te, Cs, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, TI, Pb, and Bi, at or above the boiling p
    Type: Application
    Filed: April 15, 2014
    Publication date: August 14, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: JOHN DAVIS BOLT, EUGENE MICHAEL MCCARRON, III, CHARLES DAVID MUSICK
  • Patent number: 8791044
    Abstract: Methods for preparing and using a photocatalyst are described. The catalyst is prepared by oxidation of a metal salt which has been doped in situ to form a photocatalyst active in visible light. The photocatalyst is used for degrading toxic and irritating compounds and infectious agents.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: July 29, 2014
    Assignee: The United States of America as Represented by the Administrator of the U.S. Environmental Protection Agency
    Inventors: Rajender S. Varma, Babita Baruwati, Jurate Virkutyte
  • Patent number: 8765094
    Abstract: The present invention relates to a mesoporous titania bead and the preparation method thereof, wherein said mesoporous titania bead has a diameter of 200-1000 nm, specific surface area of 50-100 m2/g, porosity of 40-60%, pore radius of 5-20 nm, pore volume of 0.20-0.30 cm3/g, and the titania comprised in the bead is anatase titania.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: July 1, 2014
    Assignee: National Cheng Kung University
    Inventors: Jyh-Ming Ting, Chun-Ren Ke
  • Patent number: 8741257
    Abstract: This disclosure relates to a process for producing titanium dioxide, comprising: a) reacting a alloy comprising silicon and aluminum having a melting point of about 482° C. to about 660° C., with chlorine gas at temperatures above 190° C. to form chlorides of silicon and aluminum; b) adding titanium tetrachloride to the chlorides of silicon and aluminum of step (a); c) oxidizing the chlorides of silicon and aluminum and titanium tetrachloride of step (b); and d) forming titanium dioxide.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: June 3, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Charles David Musick, Kenneth Paul Klein
  • Patent number: 8734756
    Abstract: A process for producing titanium dioxide, comprising: a) reacting an alloy comprising a metal selected from the group consisting of aluminum, titanium and mixtures thereof, wherein one metal is a major component of the alloy, and an element, with chlorine gas to form chlorides of aluminum, titanium or mixtures thereof and chlorides of the element, at or above the boiling point of the chloride of the major component of the alloy; with the proviso that the element does not comprise Ti when the metal is Ti and does not comprise Al when the metal is Al; (b) adding titanium tetrachloride to the chlorides formed in step (a); (c) oxidizing the chlorides formed in step (a), and titanium tetrachloride of step (b); and (d) forming titanium dioxide.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: May 27, 2014
    Assignee: E I Du Pont de Nemours and Company
    Inventors: John Davis Bolt, Eugene Michael McCarron, III, Charles David Musick
  • Patent number: 8734755
    Abstract: This disclosure relates to a process for producing titanium dioxide, comprising: reacting aluminum and an alloy comprising silicon and titanium having a silicon content of at least 5%, based on the weight of the ahoy, with chlorine gas at temperatures above 190° C. to form chlorides of silicon, aluminum and titanium; adding titanium tetrachloride to the chlorides of silicon, aluminum and titanium; oxidizing the chlorides of silicon, aluminum and titanium and titanium tetrachloride; and forming titanium dioxide.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: May 27, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventor: Charles David Musick
  • Patent number: 8679449
    Abstract: Provided is a method for producing decahedral titanium oxide particles, wherein the decahedral titanium oxide particles are produced by allowing a reaction gas containing titanium tetrachloride to flow into a reaction pipe having a partial double-pipe structure in which a hollow internal cylinder is inserted into an upstream portion of a hollow external cylinder, the method comprising: performing a preheating on the reaction gas containing titanium tetrachloride and a barrier gas not containing metal chlorides in a region on the upstream side of a downstream end of the hollow internal cylinder, while allowing the reaction gas to flow into the hollow internal cylinder and the barrier gas to flow between the hollow internal cylinder and the hollow external cylinder; and performing a main heating on the reaction gas in a downstream region apart from the downstream end of the hollow internal cylinder to thermally decompose the titanium tetrachloride.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: March 25, 2014
    Assignees: National University Corporation Hokkaido University, Showa Denko K.K.
    Inventors: Bunsho Ohtani, Yasushi Kuroda, Noriyuki Sugishita
  • Patent number: 8636974
    Abstract: It is an object to provide a method for producing titanium dioxide superfine particles, which produces monodispersed titanium dioxide superfine particles depending on its purpose, causes no clogging with a product due to self-dischargeability, requires no great pressure, and is excellent in productivity. In the method for producing titanium dioxide superfine particles in a fluid containing a titanium compound by separation, the fluid is formed into a thin film fluid between two processing surfaces arranged so as to be able to approach to and separate from each other, at least one of which rotates relative to the other, and the titanium dioxide superfine particles are separated in the thin film fluid.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: January 28, 2014
    Assignee: M. Technique Co., Ltd.
    Inventor: Masakazu Enomura
  • Patent number: 8557217
    Abstract: A process for synthesizing nano-sized rutile, anatase, or a mixture of rutile and anatase TiO2 powder. The process includes the steps of: 1) forming a Ti-peroxo complex by mixing H2O2 with a Ti compound, and 2) heating the Ti-peroxo complex at a temperature of above 50° C. A primary particle size of TiO2 particles, synthesized by the method, is below 50 nm, and an agglomerated particle size thereof after a washing/dry process is below about 10 ?m. The major characteristics of the present invention are that it is a low temperature process, a highly concentrated synthesis, and high production yield of above 90%.
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: October 15, 2013
    Assignee: Tokusen, U.S.A., Inc.
    Inventors: Insoo Kim, Woo Jin Lee, Young Jin Kim, Charles E. Smith, Jr.
  • Patent number: 8551909
    Abstract: A visible light activatable mesoporous titanium dioxide photocatalyst having a surface area of from 100 m2/g to 400 m2/g. The photocatalyst may have a rate of decomposition greater than 0.005 min?1. The photocatalyst may have a band gap width less than 2.95 eV. The photocatalyst may comprise undoped titanium dioxide or doped titanium dioxide. A hydrothermal process for synthesising a photocatalyst is also described.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: October 8, 2013
    Assignee: Dublin Institute of Technology Intellectual Property Ltd
    Inventors: Vinodkumar Etacheri, Surresh C. Pillai, John Colreavy
  • Publication number: 20130164532
    Abstract: The present invention relates to a mesoporous titania bead and the preparation method thereof, wherein said mesoporous titania bead has a diameter of 200-1000 nm, specific surface area of 50-100 m2/g, porosity of 40-60%, pore radius of 5-20 nm, pore volume of 0.20-0.30 cm3/g, and the titania comprised in the bead is anatase titania.
    Type: Application
    Filed: June 27, 2012
    Publication date: June 27, 2013
    Applicant: National Cheng Kung University
    Inventors: Jyh-Ming TING, Chun-Ren KE
  • Patent number: 8435480
    Abstract: Disclosed herein are a method for synthesizing one-dimensional helical mesoporous structure, in which a self-assembled structure of a glycine-derived surfactant is used as a template at room temperature to synthesize the one-dimensional helical mesoporous silica structures having a uniform pore size and a method for synthesizing a glycine-derived surfactant for synthesizing the helical nanoporous structures, in which relatively expensive surfactant can be easily recovered using an organic solvent and reused, which provides economical and environment friendly effects and the glycine-derived surfactant is synthesized by homogeneously heating a reaction product of glycine and phthalic anhydride by dielectric heating with irradiation of microwave, whereby it is possible to realize high yield of the glycine-derived surfactant, shortened synthesis time and increase in energy efficiency, leading to improvement in productivity and reduction in production cost.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: May 7, 2013
    Assignee: Thermolon Korea Co., Ltd.
    Inventors: Sang Cheol Han, Yang Kim, Chung Kwon Park
  • Patent number: 8398954
    Abstract: It is disclosed a process for the production of titanium dioxide comprising the following steps: (a) a titanium ore containing iron, preferably ilmenite, is reacted with an aqueous NH4F solution; (b) the aqueous suspension thus obtained is filtered with consequent separation of a sludge fraction, which contains ammonium fluoroferrates, and a filtrate fraction, which contains ammonium fluorotitanates; (c) the filtrate fraction thus obtained is subjected to an hydrolysis reaction; (d) the thus-obtained solid component is subjected to a thermal hydrolysis reaction. The plant and the reactors for performing the above process are also disclosed.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: March 19, 2013
    Assignee: Breton Spa
    Inventor: Pavel S. Gordienko
  • Patent number: 8377414
    Abstract: This disclosure provides a process for preparing mesoporous amorphous hydrous oxide of titanium, comprising formation of a precipitate comprising an ionic porogen and a hydrolyzed compound comprising titanium from an aqueous mixture in the pH range of 5 to 10; and removing the ionic porogen from the precipitate to recover a mesoporous hydrous oxide of titanium, the ionic porogen being in sufficient amount and the conditions of precipitating being effective for producing a mesoporous hydrous oxide of titanium having a surface area of at least about 400 m2/g and a pore volume of at least 0.4 cc/g.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: February 19, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventor: Carmine Torardi
  • Publication number: 20120288437
    Abstract: This disclosure relates to a process for producing titanium dioxide, comprising: a) reacting a alloy comprising silicon and aluminum having a melting point of about 482° C. to about 660° C., with chlorine gas at temperatures above 190° C. to form chlorides of silicon and aluminum; b) adding titanium tetrachloride to the chlorides of silicon and aluminum of step (a); c) oxidizing the chlorides of silicon and aluminum and titanium tetrachloride of step (b); and d) forming titanium dioxide.
    Type: Application
    Filed: November 9, 2010
    Publication date: November 15, 2012
    Applicant: E. I DU PONT DE NEMOURS AND COMPANY
    Inventors: Charles David Musick, Kenneth Paul Klein
  • Patent number: 8295786
    Abstract: The present invention provides a magnetic sheet with improved resistance to folding while maintaining good magnetic characteristics and reliability; a method for producing the magnetic sheet; an antenna; and a portable communication device. A magnetic sheet of the present invention includes a flat magnetic powder, and a resin binder capable of dissolving in a solvent, wherein the magnetic sheet has a gradient of the content ratio of the magnetic powder to the resin binder in a thickness direction thereof, wherein, in use, the magnetic sheet is folded so that, of the front and back surfaces thereof, one surface whose magnetic powder content is lower than that of the other is folded inward, and wherein the difference in glossiness measured at a light-incident angle of 60° between the front and back surfaces is 9.4 or more.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: October 23, 2012
    Assignee: Sony Chemical & Information Device Corporation
    Inventors: Keisuke Aramaki, Junichiro Sugita, Morio Sekiguchi
  • Publication number: 20120219493
    Abstract: This disclosure relates to a process for producing titanium dioxide, comprising: a) reacting an alloy comprising a metal selected from the group consisting of aluminum, titanium and mixtures thereof, wherein one metal is a major component of the alloy, and an element selected from the group consisting of Li, Be, B, Na, Mg, Al, P, S, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Rb, Sr, Y, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Te, Cs, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb, and Bi, with chlorine gas to form chlorides of aluminum, titanium or mixtures thereof and chlorides of the element selected from the group consisting of Li, Be, B, Na, Mg, Al, P, S, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Rb, Sr, Y, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Te, Cs, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb, and Bi, at or above the boiling point of the chlori
    Type: Application
    Filed: November 9, 2010
    Publication date: August 30, 2012
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: John Davis Bolt, Eugene Michael McCarron, III, Charles David Musick
  • Publication number: 20120097071
    Abstract: This invention pertains to a mesoporous amorphous oxide of titanium and processes of making a mesoporous amorphous oxide of titanium.
    Type: Application
    Filed: December 21, 2011
    Publication date: April 26, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: CARMINE TORARDI
  • Patent number: 8147794
    Abstract: The invention relates to manufacturing titanium dioxide by oxidizing titanium tetrachloride by a multi-stage method, where liquid titanium tetrachloride is used in a first and gaseous titanium tetrachloride is used in a second stage. The process is energetically more favorable and offers the possibility, to a certain extent, of controlling the mean particle size of the end product.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: April 3, 2012
    Assignee: Kronos International, Inc.
    Inventor: Rainer Gruber
  • Patent number: 8114376
    Abstract: The manufacture of titanium dioxide by oxidation of titanium tetrachloride in a multistage method, where both oxygen and titanium tetrachloride are added in several stages. In the first stage gaseous TiCl4 is introduced into a preheated oxygen-containing gaseous stream in a stoichiometric or hyper-stoichiometric amount to produce a TiO2 containing gas suspension. In the second or further stages liquid TiCl4 and oxygen-containing gas is introduced into the TiO2 containing gas suspension to produce further TiO2.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: February 14, 2012
    Assignee: Kronos International, Inc.
    Inventor: Rainer Gruber
  • Patent number: 8106101
    Abstract: This invention relates to methods of making single phase nanocrystalline titanium dioxide. It is hereby provided a method for preparing single-phase anatase type titanium dioxide photocatalyst having a particle size of nano level at near room temperatures without the need for a sintering process at high temperatures.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: January 31, 2012
    Assignee: The Hong Kong Polytechnic University
    Inventors: Walid Abdelhamld Daoud, John Haozhong Xin, Kaihong Qi
  • Patent number: 8101152
    Abstract: A titanium halide, preferably titanium tetrachloride, is reacted with suitable reductant, preferably an alkali metal or alkaline earth metal, under ultrasonic excitation in a liquid reaction medium to form nanometer size particles of titanium which may incorporate unreacted reductant. The nanosized titanium particles may be a precursor for nanosized titanium oxide which is formed by oxidizing the titanium, preferably with a low molecular weight alcohol. When the titanium particles incorporate unreacted reductant the oxidation reaction will yield nanometer sized titanates. The nanosized particles, whether titanium oxide or titanates may be extracted by first filtering them from the reaction medium, followed by washing with water to remove any water-soluble reaction products followed by spray drying.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: January 24, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Ion C. Halalay, Michael P. Balogh
  • Patent number: 8083950
    Abstract: The present invention relates to a method for recovering an organic-inorganic element-doped metal oxide from a hydrolysable metal compound, accompanied with contaminated water treatment. The present invention comprises steps of: a) adding a hydrolysable metal compound as a coagulant to a contaminated water to form a separable floc between the hydrolysable metal compound and contaminants present in contaminated water; b) separating the separable floc and the pre-treated water after flocculation treatment; and c) calcinating the separated floc over 500° C. to produce an organic-inorganic element-doped metal oxide. More preferably, the present invention further comprises subjecting the pre-treated water of the step b) to a microwave treatment to cause a photocatalytic degradation of an organic contaminant that remains in the pre-treated water, with the assistance of the remaining hydrolysable metal compound.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: December 27, 2011
    Assignees: Photo & Environmental Technology Co., Ltd., University of Technology, Sydney
    Inventors: Hokyong Shon, Vigneswaran Saravanamuthu, Erdei Laszlo, Jong Ho Kim, Jong Beom Kim, Dong Lyun Cho, Byung Chul Choi, Kun Jung Kim, Myung Wan Kim, Sung Jung Song, Hee Ju Park, Jaeweon Cho, In-soo Kim, Seung-hyun Kim
  • Publication number: 20110301270
    Abstract: The invention provides a dispersion of particles of rutile titanium oxide wherein the particles of rutile titanium oxide have a D50 in a range of 1 to 15 nm and a D90 of 40 nm or less in particle size distribution as determined by a dynamic light scattering method; a specific surface area in a range of 120 to 180 m2/g as determined by a BET method; and a rate of weight loss of 5% or less as obtained by heating the particles of rutile titanium oxide from 105° C. to 900° C.
    Type: Application
    Filed: February 15, 2010
    Publication date: December 8, 2011
    Inventors: Atsushi Nomura, Kenichi Nakagawa, Takanori Morita
  • Patent number: 8071070
    Abstract: Provided is a crystalline TiO2 powder in the form of aggregated primary particles having a variable sintering stability at a BET surface area of 70-100 m2/g and a rutile content of greater than 10% but less than or equal to 40%, and a process for preparing the crystalline TiO2 powder, which involves: introducing a TiCl4 vapor and, separately therefrom, H2 and a primary air into a mixing chamber to produce a gaseous mixture; igniting the gaseous mixture in a burner to produce a flame, which is burned into a reaction chamber to produce the crystalline TiO2 powder and gaseous substances; and separating the crystalline TiO2 powder from the gaseous substances, wherein the relative amounts of TiCl4 vapor, H2 and primary air are selected to provide crystalline TiO2 powder having the aforementioned BET surface area and rutile content, with the proviso that factor A has a value of 0.1-0.4 g/m2 in accordance within the following formula: factor A=105{[(TiCl4 vapor×H2)/(amount of air×gaseous mixture)]/BET]}.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: December 6, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Christian Schulze-Isfort, Kai Schumacher, Nina Schuhardt, Oswin Klotz, Rainer Golchert
  • Patent number: 8062622
    Abstract: A crystalline titanium dioxide powder, containing aggregated primary particles, wherein a BET surface area of the aggregated primary particles is from 30 to 65 m2/g, and a rutile content of a sum of crystalline modifications in the crystalline titanium dioxide is from of 50-70%.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: November 22, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Christian Schulze-Isfort, Oswin Klotz, Rainer Golchert, Uwe Diener, Kai Schumacher
  • Publication number: 20110189081
    Abstract: A method for synthesizing high quality crystalline anatase titanium dioxide having a substantial occurrence of (001) facets. Including the steps of combining a source of fluoride anions with a titanium precursor and subjecting the mixture to hydrolysis. A solvent can be combined with the source of fluoride anions and the titanium precursor prior to hydrolysis. The crystalline anatase titanium dioxide can be produced to have the highly reactive (001) facets predominant by area in a variety of crystal structures, such as nanosheets.
    Type: Application
    Filed: March 25, 2009
    Publication date: August 4, 2011
    Inventors: Gao Qing Lu, Shizhang Qiao, Huagui Yang
  • Patent number: 7988947
    Abstract: This invention pertains to mesoporous oxide of titanium and processes of making mesoporous oxide of titanium particularly crystalline oxide of titanium.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: August 2, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Carmine Torardi
  • Patent number: 7988780
    Abstract: A method of predicting photostability of coatings with various dopants on titanium dioxide pigment particles is disclosed. Calculations of the density of states show that a doped coating which reduces the density of states near the band edge or increases the density of states within the band gap of the pigment particles increases the photostability of the doped pigment.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: August 2, 2011
    Assignee: Kronos International Inc
    Inventors: Siegfried Bluemel, Lydia Drews-Nicolai
  • Patent number: 7939591
    Abstract: The present disclosure relates to a resin composition having excellent thermal stability, light reflectivity and color, and, preferably, flame retardancy. The present disclosure also relates to a method for producing a resin composition which comprises mixing 60 to 99.9 parts by weight of polycarbonate resin (component A) with 0.1 to 40 parts by weight of titanium dioxide pigment (component B), wherein component B (i) satisfies 0.05?(b)?(a)?0.6, when weight. reduction at 23 to 100° C. by thermogravimetric analysis (TGA) is (a) wt % and weight reduction at 23 to 300° C. by TGA is (b) wt %, and (ii) satisfies 0.001?(d)/(c)?0.01 and 0.001?(e)/(c)?0.02, when weight percentages derived from Ti, Al and Si elements in X-ray fluorescence analysis are (c) wt %, (d) wt % and (e) wt %, respectively.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: May 10, 2011
    Assignee: Teijin Chemicals, Ltd.
    Inventor: Takuya Tomoda
  • Patent number: 7935329
    Abstract: The present invention relates to a titania sol, a method of preparing the same, and a coating composition including the same. More specifically, it relates to a titania sol prepared by elevating the temperature of a reactant solution including a precursor of titania in a solvent for a reaction temperature, adding an acid catalyst to the reactant solution and conducting a sol-gel reaction while removing the solvent for reaction therefrom, and drying the prepared titania sol and re-dispersing the dried titania in a solvent for dispersion, a method of preparing the same, and a coating composition including the same.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: May 3, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Sang-Hyuk Im, Seung-Heon Lee, Young-Jun Hong, Won-Yong Choi
  • Patent number: 7932208
    Abstract: A method of preparing stable, transparent photocatalytic titanium dioxide sots is disclosed which involves thermal treatment of a suspension of amorphous titanium dioxide in the presence of certain alpha-hydroxy acids. The sots comprise titanium dioxide particles in the anatase form having a crystallite size less than about 10 nm and exhibit excellent stability and transparency at basic, neutral, and acid pH.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: April 26, 2011
    Assignee: Millennium Inorganic Chemicals, Inc.
    Inventors: Guoyi Fu, Billiejo M. Monk, Robert McIntyre
  • Patent number: 7910515
    Abstract: Silicon titanium mixed oxide powder having the following features: BET surface area of 5 to 300 m2/g, silica content, based on the total amount of the mixed oxide powder, of ?0.1 to <0.5% by weight, titanium dioxide content, based on the total amount of the mixed oxide powder, of ?99.0% by weight, sum of the proportions of silica and titanium dioxide, based on the total amount of the mixed oxide powder, ?99.5% by weight, titanium dioxide content of the primary particles comprising intergrown rutile and anatase phases, silica content of the primary particles amorphous, is prepared by allowing the vapours of one or more, in each case oxidizable and/or hydrolyzable titanium and silicon compounds to react in a high temperature zone with oxygen and/or steam, cooling the reaction mixture after the reaction and separating off the pulverulent solid from gaseous substances.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: March 22, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Reinhard Vormberg, Kai Schumacher
  • Patent number: 7887780
    Abstract: Provided is a process which includes slowly adding dropwise chilled distilled water to titanium tetrachloride to prepare solution of titanium oxychloride; adding basic solution thereto to maintain pH of the titanium oxychloride solution within a range from 3.5 to 4, thereby providing a suspension of titanium oxyhydroxide precipitate; adding basic solution thereto to adjust the suspension of titanium oxyhydroxide precipitate to be weakly basic, and heating and stirring the mixture at 80 to 100° C.; isolating and collecting dihydroxy-oxotitanium from the heated and stirred suspension of titanium oxyhydroxide precipitate, and washing it with weakly basic aqueous solution; and adding distilled water and 20 to 500 folds of hydrogen peroxide on the basis of 1 mole of Ti4+ in titanium oxyhydroxide to the washed titanium oxyhydroxide, and heat-treating the mixture at a temperature of 90 to 100° C. for 1 to 7 days to prepare titania nanorods having the mean length of 100 nm to 300 nm.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: February 15, 2011
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Sang Il Seok, In Chan Baek, Jeong Ah Chang
  • Patent number: 7858066
    Abstract: The disclosure provides a process for preparing nanocrystalline titanium dioxide, in particular rutile nanocrystalline titanium dioxide, comprising: (a) precipitating a mixture comprising hydrated titanium oxide and a separable filtering agent; (b) filtering the precipitated mixture to form a filter cake comprising the precipitated hydrated titanium dioxide and a separable filtering agent, (c) calcining the precipitated hydrated titanium oxide and separable filtering agent at a temperature of greater than about 300° C.; and (d) removing the separable filtering agent thereby recovering titanium dioxide particles.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: December 28, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Carmine Torardi
  • Patent number: 7846864
    Abstract: New types of photocatalyst materials are disclosed together with methods for preparing and using these materials, as well as air treatment systems incorporating such materials. The photocatalyst materials of this invention consist essentially of very small particles of a first-metal oxide, the first-metal being a metal that exhibits photo-induced semiconductor properties, having ions of a second-metal dispersed throughout its lattice structure, the second-metal being selected from the group of dopant metals. Such photocatalyst materials are prepared by the steps of mixing first-metal and second-metal precursors, removing nonessential ions from the mixture, drying the resulting product, and calcinating the dried product to produce the completed photocatalyst material.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: December 7, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong Seok Ham, Son Ki Ihm, Joo Il Park, Kwang Min Choi, Kwang Eun Jeong
  • Publication number: 20100266487
    Abstract: This disclosure relates to a process for making titanium dioxide in an anatase crystalline form which is stable at temperatures above 1000° C., comprising: precipitating a halide salt and a hydrolyzed compound comprising titanium from a reaction mixture comprising a titanium starting material selected from the group consisting of titanium tetrachloride, titanium oxychloride, and mixtures thereof, a base selected from the group consisting of ammonium hydroxide, ammonium carbonate, ammonium bicarbonate, tetramethyl ammonium hydroxide or tetraethyl ammonium hydroxide or mixture thereof, a solvent selected from the group consisting of ethanol, n-propanol, i-propanol, dimethyl acetamide, alcoholic ammonium halide and aqueous ammonium halide and mixtures thereof, a source of aluminum and a source of silicon to form a precipitate; and removing the halide salt from the precipitate to recover a oxide of titanium in a predominantly anatase crystalline form.
    Type: Application
    Filed: November 4, 2008
    Publication date: October 21, 2010
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Carmine Torardi
  • Publication number: 20100226851
    Abstract: A process for synthesizing nano-sized rutile, anatase, or a mixture of rutile and anatase TiO2 powder. The process includes the steps of: 1) forming a Ti-peroxo complex by mixing H2O2 with a Ti compound, and 2) heating the Ti-peroxo complex at a temperature of above 50° C. A primary particle size of TiO2 particles, synthesized by the method, is below 50 nm, and an agglomerated particle size thereof after a washing/dry process is below about 10 ?m. The major characteristics of the present invention are that it is a low temperature process, a highly concentrated synthesis, and high production yield of above 90%.
    Type: Application
    Filed: September 11, 2007
    Publication date: September 9, 2010
    Inventors: Insoo Kim, Woo Jin Lee, Young Jin Kim, Charles E. Smith, JR.
  • Patent number: 7785560
    Abstract: Process for removing halide compounds adhering to finely divided metal oxide particles by means of steam, wherein the metal oxide particles are applied to the upper part of an upright column and migrate downwards by means of gravity, the steam is applied at the bottom end of the column, the metal oxide particles and the steam are fed counter-currently, the metal oxide particles freed of halide residues are removed at the base of the column, steam and halide residues are removed at the head of the column, wherein the column is heated in such a manner that the temperature difference Tbottom?Ttop between the lower part and the upper part of the column is at least 20° C. and a maximum temperature of 500° C. prevails in the column, and the metal oxide particles have a residence time in the column of from 1 second to 30 minutes.
    Type: Grant
    Filed: June 22, 2004
    Date of Patent: August 31, 2010
    Assignee: EVONIK DEGUSSA GmbH
    Inventors: Kai Schumacher, Juergen Flesch, Volker Hamm
  • Publication number: 20100202960
    Abstract: It is an object to provide a method for producing titanium dioxide superfine particles, which produces monodispersed titanium dioxide superfine particles depending on its purpose, causes no clogging with a product due to self-dischargeability, requires no great pressure, and is excellent in productivity. In the method for producing titanium dioxide superfine particles in a fluid containing a titanium compound by separation, the fluid is formed into a thin film fluid between two processing surfaces arranged so as to be able to approach to and separate from each other, at least one of which rotates relative to the other, and the titanium dioxide superfine particles are separated in the thin film fluid.
    Type: Application
    Filed: September 11, 2008
    Publication date: August 12, 2010
    Applicant: M. Technique Co., Ltd.
    Inventor: Masakazu Enomura
  • Patent number: 7771666
    Abstract: The present invention provides a method and apparatus for the controlled synthesis of nanoparticles using a high temperature process. The reactor chamber includes a high temperature gas heated by means such as a plasma torch, and a reaction chamber. The homogenizer includes a region between the reactant inlets and the plasma (the spacer zone) to ensure that feeds from the reactant inlets are downstream of the recirculation zone induced by the high temperature gas. It also includes a region downstream of the reactant inlets that provides a nearly I dimensional (varying only in the axial direction) flow and concentration profile in the reaction zone to produce nanoparticles with narrow size distribution.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: August 10, 2010
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Stephan Claude De La Veaux, Lu Zhang