Alkali Metal Containing (li, Na, K, Rb, Or Cs) Patents (Class 423/332)
  • Patent number: 10329153
    Abstract: The present invention relates to a method for purifying raw phosphoric acid by adding ashes originating from waste incineration plants, as well as calcium hydroxide and at least one sulfide, and by wet-chemical digestion for obtaining (producing) calcium sulfate, pure phosphoric acid, metal salt solution and/or calcium hydrogen phosphates (e.g. triple superphosphate).
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: June 25, 2019
    Assignee: REMONDIS AQUA GMBH & CO. KG
    Inventors: Josef Lehmkuhl, Martin Lebek
  • Patent number: 10272423
    Abstract: Uses for a new crystalline molecular sieve designated SSZ-105 are disclosed. SSZ-105 is synthesized using N,N-dimethylpiperidinium cations as a structure directing agent. SSZ-105 is a disordered aluminosilicate molecular sieve comprising at least one intergrown phase of an ERI framework type molecular sieve and an LEV framework type molecular sieve.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: April 30, 2019
    Assignee: Chevron U.S.A. Inc.
    Inventors: Dan Xie, Christopher Michael Lew
  • Patent number: 9890050
    Abstract: A molecular sieve material, EMM-17, has in its as-calcined form an X-ray diffraction pattern including the following peaks in Table 11: TABLE 11 Relative Intensity d-spacing (?) [100 × I/I(?)] % 17.4-16.4 1-10 12.6-12.1 1-20 11.8-11.4 60-100 11.2-10.8 5-30 10.7-10.3 30-80? 8.62-8.38 10-40? 6.09-5.96 1-20 5.71-5.61 1-20 4.23-4.17 1-20 4.09-4.03 1-10 3.952-3.901 10-40? 3.857-3.809 5-30 3.751-3.705 1-20 3.727-3.682 1-20 3.689-3.644 1-10 3.547-3.506 ?1-20.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: February 13, 2018
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Simon C. Weston, Karl G. Strohmaier, Hilda B. Vroman
  • Patent number: 9754693
    Abstract: Treatment of a radioactive waste stream is provided by adding sodium hydroxide (NaOH) and/or potassium hydroxide (KOH) together with a rapidly dissolving form of silica, e.g., fumed silica or fly ash. Alternatively, the fumed silica can be first dissolved in a NaOH/KOH solution, which is then combined with the waste solution. Adding a binder that can be a mixture of metakaolin (Al2O3.2SiO2), ground blast furnace slag, fly ash, or other additives. Adding an “enhancer” that can be composed of a group of additives that are used to further enhance the immobilization of heavy metals and key radionuclides such as 99Tc and 129I. An additional step can involve simple mixing of the binder with the activator and enhancer, which can occur in the final waste form container, or in a mixing vessel prior to pumping into the final waste form container, depending on the particular application.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: September 5, 2017
    Assignee: Atkins Global Solutions, LLC
    Inventors: Weiliang Gong, Werner Lutze, Ian L. Pegg
  • Patent number: 9556035
    Abstract: A particle formed of silica and carbon having a low impurity content and an excellent reactivity is provided. Also provided is a method of producing a silica and carbon-containing material including: (B) a carbon mixing step of mixing an aqueous alkali silicate solution having a silicon concentration within the liquid portion of at least 10 wt % with carbon so as to obtain a carbon-containing aqueous alkali silicate solution; and (C) a silica recovery step of mixing the carbon-containing aqueous alkali silicate solution with a mineral acid so as to cause carbon and silicon within the liquid portion to precipitate as particles formed of silica and carbon and thus obtaining a particle-containing liquid substance, then solid-liquid separating the liquid substance so as to obtain a solid portion of a silica and carbon-containing material which is an assembly of particles formed of silica and carbon and a liquid portion containing impurities.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: January 31, 2017
    Assignee: TAIHEIYO CEMENT CORPORATION
    Inventors: Kouki Ichitsubo, Kenta Masuda, Masakazu Suzuki, Kohei Kawano, Jun Kumasaka
  • Patent number: 9371398
    Abstract: Provided is a method for efficiently preparing alkali cellulose having a uniform alkali distribution. More specifically, provided are a methods for preparing alkali cellulose comprising a contact filtration step of bringing a pulp into contact with an alkali metal hydroxide solution on a moving filtration plane for vacuum filtration to collect a contact product remaining on the filtration plane, and a draining step of draining the contact product; and a method of preparing cellulose ether by using the alkali cellulose. Also provided is an apparatus for preparing alkali cellulose comprising a continuous horizontal vacuum filter type contactor.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: June 21, 2016
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventor: Mitsuo Narita
  • Patent number: 9337478
    Abstract: The specification relates to a composite particle for storing lithium. The composite particle is used in an electrochemical cell. The composite particle includes a metal oxide on the surface of the composite particle, a major dimension that is approximately less than or equal to 40 microns and a formula of MM?Z, wherein M is from the group of Si and Sn, M? is from a group of Mn, Mg, Al, Mo, Bronze, Be, Ti, Cu, Ce, Li, Fe, Ni, Zn, Co, Zr, K, and Na, and Z is from the group of O, Cl, P, C, S, H, and F.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: May 10, 2016
    Inventor: Shailesh Upreti
  • Patent number: 9315882
    Abstract: The present invention relates to a method for preparing an anode active material, comprising (S1) forming a shell being a coating layer comprising a carbon material on the surface of a core comprising silicon oxide particles, to obtain a silicon oxide-carbon composite having a core-shell structure; (S2) mixing the silicon oxide-carbon composite with an oxygen-containing lithium salt, followed by heat treatment to produce a silicon oxide-lithium alloy, thereby obtaining a (SiOx—Liy)—C (0<x<1.5, 0<y<4) composite having a core-shell structure; and (S3) washing the surface of the (SiOx—Liy)—C composite having a core-shell structure and drying the composite, and an anode active material prepared by the method.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: April 19, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Mi-Rim Lee, Yong-Ju Lee, Je-Young Kim, Hye-Ran Jung
  • Patent number: 9133061
    Abstract: A method for making a ceramic body, the method including: mixing inorganic ceramic-forming ingredients to form a batch; adding a rapidly hydratable cellulosic binder and a liquid vehicle to the batch and further mixing to form a plasticized mixture; extruding the plasticized mixture to form a green body. The green body can then be heated sufficiently to produce a predominant ceramic phase, thereby transforming the green body into the ceramic body.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: September 15, 2015
    Assignee: Corning Incorporated
    Inventors: Gregg William Crume, Robert John Locker, Earl James Sanford
  • Patent number: 9114340
    Abstract: A liquid removal apparatus adapted to separate liquid from a composite slurry of liquid and solids. The apparatus includes a movable, permeable membrane having opposing first and second sides. A ‘loaded belt portion’ of the second side is configured to receive the slurry. A permeable membrane support system is configured to provide movable support for the loaded belt portion and includes a transport deck located in contact with the first side of the permeable membrane below the loaded belt portion. The liquid removal apparatus has a housing with a low-pressure chamber in sealing contact with the first side of the permeable membrane. A pressure conditioning system applies a differential pressure via the housing to generate a lower pressure on the first filter belt side than on the second side. The transport deck is located within the low pressure chamber.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: August 25, 2015
    Assignee: Stevenson Group Limited
    Inventor: Gary Lewis Smith
  • Publication number: 20150094197
    Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.
    Type: Application
    Filed: December 11, 2014
    Publication date: April 2, 2015
    Inventors: Elke Signer-Apel, Wolfram Höland, Marcel Schweiger, Christian Ritzberger, Harald Bürke, Volker Rheinberger
  • Publication number: 20150056106
    Abstract: Provided is an exhaust gas purification catalyst having high catalytic activity enabling combustion of PM (particulate matter) at low temperatures and excellent thermal resistance, an exhaust gas purification device and filter having high combustion efficiency of PM and excellent durability, and a method for producing the catalyst. The exhaust gas purification catalyst of the present invention is composite oxide particles containing at least one alkali metal, Si, and Zr.
    Type: Application
    Filed: February 28, 2013
    Publication date: February 26, 2015
    Applicant: OTSUKA CHEMICAL CO., LTD.
    Inventors: Masatoshi Uetani, Takahiro Mishima
  • Publication number: 20150030932
    Abstract: A method for producing an alkali-metal-including active material by pre-doping an active material with an alkali metal ion includes: mixing the alkali metal, an organic solvent with which the alkali metal is solvated, and a ligand having an electrophilic substitution reactivity to produce an alkali metal complex; and contacting and reacting the alkali metal complex and the active material with each other to pre-dope the active material with the alkali metal ion.
    Type: Application
    Filed: July 23, 2014
    Publication date: January 29, 2015
    Inventors: Shuhei Yoshida, Daisuke Shibata
  • Publication number: 20140342237
    Abstract: Disclosed are a separator for an electrochemical device substantially comprising inorganic particles to provide an excellent mechanical strength, an electrochemical device comprising the same, and a method of manufacturing the separator using a high internal phase emulsion (RIPE).
    Type: Application
    Filed: July 31, 2014
    Publication date: November 20, 2014
    Inventors: Jin-Woo Kim, Joo-Sung Lee, Jong-Hun Kim
  • Publication number: 20140220446
    Abstract: A cathode material for a lithium ion secondary battery is a composite grain including an oxide and a carbon material. The oxide includes, as constituent elements, Li, Si and at least one of Fe and Mn. According to a measurement by an X-ray diffraction method using Cu-K? as an X-ray source, a diffraction peak exists within a range of 2?=33±2° and a half width of the diffraction peak is 0.55° or more. A size of the grain is 1 ?m or more and 20 ?m or less.
    Type: Application
    Filed: August 31, 2012
    Publication date: August 7, 2014
    Applicant: Shoei Chemical Inc.
    Inventors: Masahiko Miyahara, Atsushi Nemoto, Hirokazu Sasaki
  • Patent number: 8734750
    Abstract: Sodium silicate solutions of modulus 3.0 to 3.8 are provided. In some embodiments, the solution is made by a process that uses two specific principal reaction stages. A sodium silicate solution having a low SiO2:Na2O molar ratio, in the range from 2.0 to 2.8, is first produced by reaction of the SSS, as a cost-effective SiO2 source, with aqueous caustic soda. The conversion of this intermediate sodium silicate solution of low modulus to a high SiO2:Na2O molar ratio is made possible by using a SiO2 source that is prepared as precipitated amorphous silica from the intermediate sodium silicate solution produced above.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: May 27, 2014
    Assignee: The National Titanium Dioxide Co. Ltd. (CRISTAL)
    Inventors: Fadi Mohammed Saeed Trabzuni, Hassan Moenes El Dekki, Chathangat Cheroolil Gopalkrishnan
  • Patent number: 8715525
    Abstract: One object is to provide a manufacturing method of an electrode material with which a characteristic of a power storage device can be improved. In a manufacturing method of an electrode material comprising a compound represented by a general formula A2-aMSiO4 (A represents an alkali metal, M represents a transition metal, and a represents 0?a<2), a mixed material is formed by mixing a compound that is a supply source of A, a compound that is a supply source of M, and a compound that is a supply source of Si; a flux is mixed into the mixed material after the mixed material is subjected to a heat treatment at a temperature of 400° C. or lower and pulverized; and the mixed material into which the flux is mixed is subjected to a heat treatment at a temperature of 700° C. or lower in an inert gas atmosphere.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: May 6, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Masaki Yamakaji, Takuya Miwa
  • Patent number: 8709370
    Abstract: The present invention relates generally to production of a fluoride gas and equivalents thereof, and fluorine-doped sodium silicate glass, glass ceramics, vitro ceramics and equivalents thereof. In one embodiment, the method includes providing a salt and an oxide in a reactor, heating the reactor to produce a vapor and the vitro ceramic and removing the vapor.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: April 29, 2014
    Assignee: SRI International
    Inventors: Angel Sanjurjo, Kai-Hung Lau, Xiaobing Xie, Gopala Krishnan
  • Patent number: 8709298
    Abstract: A compound of the general formula (I) AaMbPcOd??(I) in which the variables are each defined as follows: M is at least one transition metal selected from Co, Ni, Mn, Fe and Cr, A is Li or LixNa1-x where x is in the range from 0.2 to 1.0, a is in the range from 3.5 to 4.5, b is in the range from 0.8 to 1.2, c is in the range from 1.8 to 2.2 and d is in the range from 7.2 to 8.8.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: April 29, 2014
    Assignee: BASF SE
    Inventors: Martin Schulz-Dobrick, Hartmut Hibst, Jordan Keith Lampert, Robert Glaum, Helmut Ehrenberg, Katharina Gerber, Markus Herklotz, Frieder Scheiba
  • Publication number: 20140011086
    Abstract: Lithium-iron molecular precursor compounds, compositions and processes for making a cathode for lithium ion batteries. The molecular precursor compounds are soluble and provide processes to make stoichiometric cathode materials with solution-based processes. The cathode material can be, for example, a lithium iron oxide, a lithium iron phosphate, or a lithium iron silicate. Cathodes can be made as bulk material in a solid form or in solution, or in various forms including thin films.
    Type: Application
    Filed: June 27, 2013
    Publication date: January 9, 2014
    Inventors: Kyle L. Fujdala, Zhongliang Zhu, Paul R. Markoff Johnson
  • Patent number: 8621889
    Abstract: The invention relates to a process for manufacturing compounds based on one or more silicates of alkali metals and/or of alkaline-earth metals, optionally in the form of mixed silicates that combine at least two of these elements, said process involving: (i) preferably a conversion reaction (1) in which halides of said alkali metals and/or of said rare earths and/or of said alkaline-earth metals are converted into the corresponding sulfates; (iii) a conversion reaction (2) in which said sulfates together with silica are converted into the corresponding silicates, the heat supply needed for this conversion being provided, at least in part, by a combustion reaction (3) using a submerged burner or a plurality of submerged burners.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: January 7, 2014
    Assignee: Saint-Gobain Glass France
    Inventors: Pierre Jeanvoine, Arnaud Le Verge
  • Publication number: 20140004422
    Abstract: The purpose of the present invention is to provide a magnesium secondary battery, which can be charged with electricity and can discharge electricity to be used as a magnesium secondary battery and is capable of improving characteristics of magnesium secondary batteries The positive electrode active material for a magnesium secondary battery is expressed by compositional formula of MgMSiO4, where M contains at least one element selected from among Co, Ni and Fe.
    Type: Application
    Filed: March 27, 2012
    Publication date: January 2, 2014
    Applicant: SHOEI CHEMICAL INC.
    Inventors: Jun Yang, Yanna Nuli
  • Patent number: 8596468
    Abstract: New silica gel materials and novel methods of producing such are provided. The method itself entails a manner of mixing the reactants together in a one-pot process such that the time required for aging is reduced without compromising the ability to target pore size production. In such a way, the pH of the reaction drives pore size development, thereby permitting a more efficient process to be followed in terms of expensive drying/heating steps being reduced timewise, if not altogether. Furthermore, in one embodiment, the resultant gel materials exhibit a certain pore size minimum while simultaneously exhibiting a degree of softness heretofore unavailable. As such, not only is this novel method more efficient in silica gel manufacture, but the resultant materials are completely novel as well. The gel materials made therefrom may be utilized in a variety of different end uses, such as cooking oil filtration, soft skin cleansers, dental abrasives, and the like.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: December 3, 2013
    Assignee: J.M. Huber Corporation
    Inventors: Duen-Wu Hua, Gary W. Loock
  • Publication number: 20130284974
    Abstract: Sodium silicate solutions of modulus 3.0 to 3.8 are provided. In some embodiments, the solution is made by a process that uses two specific principal reaction stages. A sodium silicate solution having a low SiO2:Na2O molar ratio, in the range from 2.0 to 2.8, is first produced by reaction of the SSS, as a cost-effective SiO2 source, with aqueous caustic soda. The conversion of this intermediate sodium silicate solution of low modulus to a high SiO2:Na2O molar ratio is made possible by using a SiO2 source that is prepared as precipitated amorphous silica from the intermediate sodium silicate solution produced above.
    Type: Application
    Filed: June 28, 2013
    Publication date: October 31, 2013
    Inventors: Fadi Mohammed Saeed TRABZUNI, Hassan Moenes EL DEKKI, Chathangat Cheroolil GOPALKRISHNAN
  • Publication number: 20130243681
    Abstract: A process for the production of Li2MSiO4 where M is selected from the group Fe, Mn, Co, and Ni, is disclosed. The process uses an atmospheric-pressure solvothermal synthesis and a calcining step wherein the solvent is selected to be stable from decomposition over the solvothermal process conditions. The solvothermal solvent is recoverable and reusable. The process also relies on an excess of lithium in the starting materials mix to promote phase-purity of the Li2MSiO4 crystalline phase. The Li2MSiO4 material is used as a cathode material in a lithium ion battery cell.
    Type: Application
    Filed: March 19, 2013
    Publication date: September 19, 2013
    Applicant: Cerion Enterprises, LLC
    Inventor: Peter Jerome Cowdery-Corvan
  • Patent number: 8512664
    Abstract: A method is provided for treating silica sand scrubs (SSS) generated and accumulated as waste in the chloride manufacturing process of titanium dioxide pigment. A hydrothermal process is used to produce sodium silicate solutions of modulus 3.0 to 3.8, and precipitated silicas. In some embodiments, the process uses two specific principal reaction stages. A sodium silicate solution having a low SiO2:Na2O molar ratio, in the range from 2.0 to 2.8, is first produced by reaction of the SSS, as a cost-effective SiO2 source, with aqueous caustic soda. The conversion of this intermediate sodium silicate solution of low modulus to a high SiO2:Na2O molar ratio is made possible by using a SiO2 source that is prepared as precipitated amorphous silica from the intermediate sodium silicate solution produced above.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: August 20, 2013
    Assignee: The National Titanium Dioxide Co. Ltd. (CRISTAL)
    Inventors: Fadi Mohammed Saeed Trabzuni, Hassan Moenes El Dekki, Chathangat Cheroolil Gopalkrishnan
  • Publication number: 20130194348
    Abstract: The present invention provides an image forming method and an ink composition whereby deterioration of a head plate, which is formed of silicon, is suppressed, and an image with higher precision is formed stably, the ink composition including an inorganic silicate compound and being ejected to form an image from an ink-jet head having a nozzle plate where a C8F17C2H4SiCl3 film (fluorocarbon film) is provided on the surface thereof at a side toward the ink ejection direction of a nozzle.
    Type: Application
    Filed: March 12, 2013
    Publication date: August 1, 2013
    Applicant: FUJIFILM CORPORATION
    Inventor: FUJIFILM CORPORATION
  • Patent number: 8475757
    Abstract: Amine stabilizing agents containing an azeotrope comprising water, an alcohol, and sodium hydride. Amine stabilizing agents containing water and a liquid silica hydroxide compound. Methods of making of amine stabilizing agents where solid silicon rock and sodium hydroxide are mixed with an ammonium/water solution to produce a green liquid in a first stage of the reaction. Alcohol is added and the alcohol fraction is separated from the non-alcohol fraction to produce an alcohol fraction product and a bottom fraction that is not soluble in alcohol or organics. The agents can be added to amines for stabilizing amines in anime processing of gases, in CO2 capture, in CO2 abatement systems and in other systems where amines are utilized to remove contaminants.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: July 2, 2013
    Assignee: Pro-Con International, LLC
    Inventor: Mark Owen Bublitz
  • Patent number: 8460453
    Abstract: The invention relates to a process for preparing clear aqueous solutions of silicates, remaining stable at 20° C. on storage for at least 6 months, containing 20% to 40% by weight SiO2, 10% to 20% by weight M2O, where M is a cation from the group consisting of Li+, Na+, K+ and NY4+ and Y is an alkyl or alkenyl radical having 1 to 6 C atoms, 0.5% to 6% by weight Al2O3 and 100% by weight water, by introducing an aqueous solution of a silicate of the general formula M2O x nSiO2, in which M is a cation from the group consisting of Li+, Na+, K+ and NY4+, and where Y is an alkyl or alkenyl radical having 1 to 6 C atoms, and n is a number in the range from 1 to 5, and metering in an aluminium compound in such a way that the viscosity of the reaction mixture remains below 10 000 mPas, and the reaction being carried out in a temperature range from 20 to 140° C.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: June 11, 2013
    Assignee: Cognis IP Management GmbH
    Inventor: Ralf Bohlander
  • Publication number: 20130130886
    Abstract: A matrix for a thermostructural fibrous composite material obtained by geopolymer synthesis based on nanocrystalline cristobalite resulting from the crystallization of geopolymer micelles of potassium polysiloxonate K—(Si—O—Si—O)n. The nanocrystalline cristobalite is in the form of micelles and/or microspheres having dimensions of less than 1 micron, preferably of less than 500 nanometers, connected together by an amorphous phase. The matrix 4 contains at least 85 percent by weight of oxide SiO2 with at most 15%, preferably at most 10%, by weight of alkali metal oxide K2O. The nanocrystalline cristobalite results from the crystallization of geopolymer micelles of potassium polysiloxonate by a heat treatment at a temperature preferably between 600° C. and 800° C., for a time of less than 30 minutes. The fibrous composite material impregnated with this matrix is thermostructural.
    Type: Application
    Filed: March 28, 2011
    Publication date: May 23, 2013
    Applicant: PYROMERAL SYSTEMS S.A.
    Inventor: M. Michel Davidovics
  • Publication number: 20130078519
    Abstract: A production process for lithium-silicate-based compound according to the present invention is characterized in that: a lithium-silicate compound being expressed by Li2SiO3 is reacted with a transition-metal-element-containing substance including at least one member being selected from the group consisting of iron and manganese at 550° C. or less within a molten salt including at least one member being selected from the group consisting of alkali-metal nitrates as well as alkali-metal hydroxides in an atmosphere in the presence of a mixed gas including carbon dioxide and a reducing gas. In accordance with the present invention, it is possible to produce lithium-silicate-based materials, which are useful as a positive-electrode active material for lithium-ion secondary battery, and the like, at low temperatures by means of relatively easy means.
    Type: Application
    Filed: June 17, 2011
    Publication date: March 28, 2013
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Toshikatsu Kojima, Takuhiro Miyuki, Tetsuo Sakai, Akira Kojima, Junichi Niwa, Hitotoshi Murase, Kazuhito Kawasumi
  • Publication number: 20130052544
    Abstract: An object of the present invention is to provide a cathode active material which contains small-particle sized and low-crystalline lithium transition metal silicate and which undergoes charge-discharge reaction at room temperature. The cathode active material for a non-aqueous electrolyte secondary battery is characterized by containing a lithium transition metal silicate and exhibits diffraction peaks having half widths of 0.175 to 0.6°, the peaks observed through powder X-ray diffractometry within a 2? range of 5 to 50°.
    Type: Application
    Filed: August 30, 2012
    Publication date: February 28, 2013
    Applicants: THE FURUKAWA BATTERY CO., LTD, FURUKAWA ELECTRIC CO., LTD.
    Inventors: Michio OHKUBO, Michihiro SHIMADA, Naoki UNO, Yosuke HIRAYAMA, Toshio TANI, Hidetoshi ABE, Miyu AITA
  • Patent number: 8287833
    Abstract: A method is provided for treating silica sand scrubs (SSS) generated and accumulated as waste in the chloride manufacturing process of titanium dioxide pigment. A hydrothermal process is used to produce sodium silicate solutions of modulus 3.0 to 3.8, and precipitated silicas. In some embodiments, the process uses two specific principal reaction stages. A sodium silicate solution having a low SiO2:Na2O molar ratio, in the range from 2.0 to 2.8, is first produced by reaction of the SSS, as a cost-effective SiO2 source, with aqueous caustic soda. The conversion of this intermediate sodium silicate solution of low modulus to a high SiO2:Na2O molar ratio is made possible by using a SiO2 source that is prepared as precipitated amorphous silica from the intermediate sodium silicate solution produced above.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: October 16, 2012
    Assignee: The National Titanium Dioxide Co. Ltd. (CRISTAL)
    Inventors: Fadi Mohammed Saeed Trabzuni, Hassan Moenes El Dekki, Chathangat Cheroolil Gopalkrishnan
  • Patent number: 8257486
    Abstract: The present invention provides a composition and a process for the preparation of chemical activated cold setting fly ash building construction materials. The chemical activator is an alkaline aqueous solution of 11.2 to 13.6 in pH and 1.25 to 1.40 gm/cc in density which contains admixtures of different concentrations of hydroxyl, sulfate, acetate and chloride bearing chemical salts of calcium, magnesium, sodium, potassium and aluminum in water medium. The reaction of chemical activator solution and the mineral constituents of fly ash mix develop binding property. The binding matrix of chemical activated fly ash mix is mostly hydrous silica and silicate group of phases which on setting under atmospheric condition attains strength suitable for building construction application. Utilization of fly ash of any source by weight ranges from 80 to 99% in manufacture of building materials including heat and acid resistance and toxic waste disposal products.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: September 4, 2012
    Assignee: Council of Scientific & Industrial Research
    Inventors: Banshidhar Nayak, Barada Kanta Mishra, Snehasis Behera, Rajeev, Vimal Kumar
  • Patent number: 8148434
    Abstract: A process for producing an aqueous silica-based sol is disclosed wherein a cationic ion exchange resin having part of its ion exchange capacity in hydrogen form is contacted with an aqueous alkali metal silicate to form a slurry having a pH from 5.0 to 11.5 and/or having particle aggregation or microgel formation corresponding to a S value up to 45%; adjusting the pH using a material comprising an aluminum compound; and separating the resin from the slurry. Silica-based sols having an S value from 15 to 25%, mole ratio Si:Al from 20:1 to 50:1, mole ratio Si:X, where X=alkali metal, from 5:1 to 17:1, SiO2 content of at least 5% by weight and containing silica-based particles having a specific surface area of at least 300 m2/g, as well as the use of such silica-based sols in producing paper are disclosed.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: April 3, 2012
    Assignee: Akzo Nobel N.V.
    Inventors: Johan Nyander, Glenn Mankin
  • Patent number: 8133618
    Abstract: A process for preparing an at least partially lithiated transition metal oxyanion-based lithium-ion reversible electrode material, which includes providing a precursor of said lithium-ion reversible electrode material, heating said precursor, melting same at a temperature sufficient to produce a melt including an oxyanion containing liquid phase, cooling said melt under conditions to induce solidification thereof and obtain a solid electrode that is capable of reversible lithium ion deinsertion/insertion cycles for use in a lithium battery. Also, lithiated or partially lithiated oxyanion-based-lithium-ion reversible electrode materials obtained by the aforesaid process.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: March 13, 2012
    Assignees: Universite de Montreal, Centre National de la Recherche Scientifique, Phostech Lithium Inc.
    Inventors: Laurent Gauthier, Michel Gauthier, Donald Lavoie, Christophe Michot, Nathalie Ravet
  • Publication number: 20120001120
    Abstract: One object is to provide a manufacturing method of an electrode material with which a characteristic of a power storage device can be improved. Another object is to provide a power storage device to which the above-mentioned electrode material is applied, and an application mode thereof. In a manufacturing method of an electrode material comprising a compound represented by a general formula A2-aMSiO4 (A represents an alkali metal, M represents a transition metal, and a represents 0?a<2), a mixed material is formed by mixing a compound that is a supply source of A of the general formula, a compound that is a supply source of M of the general formula, and a compound that is a supply source of Si of the general formula; a flux is mixed into the mixed material after the mixed material is subjected to a heat treatment at a temperature of 400° C. or lower and pulverized; and the mixed material into which the flux is mixed is subjected to a heat treatment at a temperature of 700° C.
    Type: Application
    Filed: June 28, 2011
    Publication date: January 5, 2012
    Inventors: Masaki Yamakaji, Takuya Miwa
  • Publication number: 20120003139
    Abstract: It is an object to provide a material for an electrode with improved electron conductivity and a power storage device using the material for an electrode. In a process for manufacturing a material for an electrode including a lithium phosphate compound represented by a general formula LiMPO4 having an olivine structure or a lithium silicate compound represented by a general formula Li2MSiO4 having an olivine structure, a metal element having a valence different from that of a metal element represented by M is added. The metal element having a different valence serves as a carrier generation source in the material for an electrode, whereby the electron conductivity of the material for an electrode is improved. By using the material for an electrode with improved electron conductivity as a positive electrode active material, a power storage device with larger discharge capacity is provided.
    Type: Application
    Filed: June 6, 2011
    Publication date: January 5, 2012
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Takahiro KAWAKAMI, Takuya MIWA
  • Patent number: 8057770
    Abstract: A method is provided for treating silica sand scrubs (SSS) generated and accumulated as waste in the chloride manufacturing process of titanium dioxide pigment. A hydrothermal process is used to produce sodium silicate solutions of modulus 3.0 to 3.8, and precipitated silicas. In some embodiments, the process uses two specific principal reaction stages. A sodium silicate solution having a low SiO2:Na2O molar ratio, in the range from 2.0 to 2.8, is first produced by reaction of the SSS, as a cost-effective SiO2 source, with aqueous caustic soda. The conversion of this intermediate sodium silicate solution of low modulus to a high SiO2:Na2O molar ratio is made possible by using a SiO2 source that is prepared as precipitated amorphous silica from the intermediate sodium silicate solution produced above.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: November 15, 2011
    Assignee: The National Titanium Dioxide Co., Ltd. (CRISTAL)
    Inventors: Fadi Mohammed Saeed Trabzuni, Hassan Moenes El Dekki, Chathangat Cheroolil Gopalkrishnan
  • Patent number: 7981211
    Abstract: Surface-modified, fumed silica having the data: BET surface area, m2/g: 25-400; Average primary particle size, nm: 5-50; pH: 3-10; Carbon content, % by weight: 0.1-10; Potassium content (calculated as potassium oxide), % by weight: 0.000001-40; is prepared by subjecting a fumed silica to surface modification in the presence of potassium compounds. It can be used in LSR silicone rubber compositions as a filler.
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: July 19, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Juergen Meyer, Mario Scholz
  • Publication number: 20110171095
    Abstract: A method is provided for the synthesis of a mesoporous lithium transition metal compound, the method comprising the steps of (i) reacting a lithium salt with one or more transition metal salts in the presence of a surfactant, the surfactant being present in an amount sufficient to form a liquid crystal phase in the reaction mixture (ii) heating the reaction mixture so as to form a sol-gel and (iii) removing the surfactant to leave a mesoporous product. The mesoporous product can be an oxide, a phosphate, a borate or a silicate and optionally, an additional phosphate, borate or silicate reagent can be added at step (i). The reaction mixture can comprise an optional chelating agent and preferably, the reaction conditions at steps (i) and (ii) are controlled so as to prevent destabilisation of the liquid crystal phase. The invention is particularly suitable for producing mesoporous lithium cobalt oxide and lithium iron phosphate.
    Type: Application
    Filed: October 19, 2009
    Publication date: July 14, 2011
    Applicant: QINETIQ LIMITED
    Inventors: Gary Owen Mepsted, Emmanuel Imasuen Eweka
  • Publication number: 20110112330
    Abstract: Catalyst used in a process for preparing acrolein and acrylic acid at higher yield to convert glycerin to valuable other chemical raw materials. The glycerin dehydration catalyst consists mainly of a compound containing at least one element selected from Mo, W and V, in which protons in the heteropolyacid are exchanged at least partially with at least one cation selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements.
    Type: Application
    Filed: April 14, 2009
    Publication date: May 12, 2011
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Yasuhiro Magatani, Kimito Okumura
  • Patent number: 7932203
    Abstract: A method for producing an oil-binding agent of granular open-porous structure with a silicate ceramic matrix by using recovered paper material and clay. The method is characterized in that, in each case based on the entire raw material, 35 to 60 wt.-% sewage sludge with a water content of between 70 and 85 wt.-%, 25 to 55 wt.-% recovered paper material with a water content of between 35 and 55 wt.-%, 10 to 25 wt.-% clay and optionally 1 to 3 wt.-% zeolite, 1 to 2 wt.-% quicklime and/or up to 3 wt. % fly ash are mixed to a homogeneous mixture. The raw material thus obtained is subsequently processed in order to form particles having an average diameter of 4 to 6 mm. The particles are then dried and subsequently burnt at 950 to 1050° C. The oil-binding agents produced according to said method have a bulk density of between 0.4 and 0.75 kg/1 and a oil-binding capability of 0.7 to 1.0 1 oil per oil-binder.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: April 26, 2011
    Assignee: Commerzialbank Mattersburg im Burgenland AG
    Inventor: Franz Josef Philipp
  • Publication number: 20110064918
    Abstract: A novel sizing-adhesive composition for corrugating characterised in that it comprises at least one low molecular weight, water soluble polymer such as a maltodextrin, corrugating boards prepared therewith and methods of producing them.
    Type: Application
    Filed: July 19, 2010
    Publication date: March 17, 2011
    Applicant: CARGILL, INCORPORATED
    Inventors: Freddy Johannes Martina ANDRIESSEN, Leonard JANNUSCH, Peter OBRADOVIC-SANDMANN
  • Patent number: 7892510
    Abstract: Stable, aqueous dispersion containing silicon dioxide powder having a hydroxyl group density of 2.5 to 4.7 OH/nm2, which is obtained from a silicon dioxide powder produced by a flame hydrolysis process under acid conditions. The dispersion is produced by incorporating the silicon dioxide powder into an aqueous solution by means of a dispersing device. The dispersion can be used to produce glass articles.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: February 22, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Kai Schumacher, Monika Oswald
  • Publication number: 20110038777
    Abstract: The present invention relates to a production method, of water glass, comprising dissolving a sodium-based byproduct which is by-produced in the process of enhancing the purity of silicone and not only contains silicon but also contains sodium silicate as a main component, in water to produce crude water glass, at the same time, dissolving the silicon to generate a hydrogen gas, and then filtering the crude water glass to produce water glass. An object of the present invention is to provide a production method of water glass, ensuring that in utilizing, as water glass, a sodium-based byproduct which is by-produced in the process of enhancing the purity of silicon and not only contains silicon but also contains sodium silicate as a main component, the problem of hydrogen gas generation attributable to silicon contained in the byproduct can be solved, a safe and stable operation is possible, and effective utilization as transparent water glass can be achieved.
    Type: Application
    Filed: April 3, 2009
    Publication date: February 17, 2011
    Inventors: Jiro Kondo, Nobuyuki Ono, Hiroshi Onodera, Tsutomu Saito
  • Patent number: 7879303
    Abstract: Described is a method for the production of metal salts, wherein the cationic metal is preferably selected from Group I to IV metals and mixtures thereof and the anionic group is selected from phosphates, silicates, sulfates, carbonates, hydroxides, fluorides and mixtures thereof, and wherein said method comprises forming a mixture of at least one metal source that is a metal carboxylate with a mean carbon value per carboxylate group of at least 3 and at least one anion source into droplets and oxiding said droplets in a high temperature environment, preferably a flame. This method is especially suited for the production of calcium phosphate biomaterials such as hydroxyapatite (HAp,Cal0(P04)6(OH)2) and tricalcium phosphate (TCP,Ca3(P04)2) that exhibit excellent biocompatibility and osteoconductivity and therefore are widely used for reparation of bony or periodontal defects, coating of metallic implants and bone space fillers.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: February 1, 2011
    Assignee: Eidgenossische Technische Hochschule Zurich
    Inventors: Wendelin Jan Stark, Sotiris-Emmanuel Pratsinis, Marek Maciejewski, Stefan Fridolin Loher, Alfons Baiker
  • Publication number: 20110009254
    Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools.
    Type: Application
    Filed: July 9, 2010
    Publication date: January 13, 2011
    Applicant: Ivoclar Vivadent AG
    Inventors: Marcel Schweiger, Volker Rheinberger, Harald Burke, Wolfram Holand, Elke Apel, Christian Ritzberger, Dmitri Brodkin
  • Patent number: 7867464
    Abstract: A process for the reversible storage of hydrogen, comprising bringing an alloy of alkaline metal and silicon into contact with gaseous hydrogen leading to the formation of the hydride or corresponding hydrides, comprises the use of at least one balanced system that corresponds to the formula: MXMSi?MXMSiHn ?where M is selected from among Li, Na, or K and in which atomic ratios XM take on the following values: XLi=1 1?XNa?3 1?XK?2 ?n is the number of hydrogen atoms corresponding to the stoichiometry of the hydride or formed hydrides. or to the formula MSiXSi?MSiXSiH2XSi+1 ?where M is selected from among Li, Na, or K and in which the atomic ratio XSi=Si/M takes on a value of 1 to 4.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: January 11, 2011
    Assignee: IFP Energies Nouvelles
    Inventors: Pascal Raybaud, François Ropital
  • Patent number: 7851513
    Abstract: A process for producing aqueous silica-based sols, having an S value from 15 to 25%, mole ratio Si:Al from 20:1 to 50:1, mole ratio Si:X, where X=alkali metal, from 5:1 to 17:1, SiO2 content of at least 5% by weight and containing silica-based particles having a specific surface area of at least 300 m2/g, are disclosed wherein a cationic ion exchange resin having part of its ion exchange capacity in hydrogen form is contacted with an aqueous alkali metal silicate to form a slurry having a pH from 5.0 to 11.5 and/or having particle aggregation or microgel formation corresponding to a S value up to 45%; adjusting the pH using a material comprising an aluminium compound; and separating the resin from the slurry. Further, the use of such silica-based sols in producing paper is disclosed.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: December 14, 2010
    Assignee: Akzo Nobel N.V.
    Inventors: Johan Nyander, Glenn Mankin