Aluminosilicate Patents (Class 423/328.1)
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Patent number: 7416714Abstract: The invention is directed to a process and method for forming synthetic hydroxysodalite from nepheline and feldspar and/or nepheline syenite. A caustic material such as a solution of sodium hydroxide is combined with the nepheline and feldspar and/or nepheline syenite to form the synthetic hydroxysodalite.Type: GrantFiled: March 28, 2006Date of Patent: August 26, 2008Assignee: Unimin CorporationInventor: David D. Kragten
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Publication number: 20080160221Abstract: Glasses are disclosed which are used to produce substrates in flat panel display devices. The glasses exhibit a density less than about 2.45 gm/cm3 and a liquidus viscosity greater than about 200,000 poises, the glass consisting essentially of the following composition, expressed in terms of mol percent on an oxide basis: 65-75 SiO2, 7-13 Al2O3, 5-15 B2O3, 0-3 MgO, 5-15 CaO, 0-5 SrO, and essentially free of BaO. The glasses also exhibit a strain point exceeding 650° C.Type: ApplicationFiled: March 10, 2008Publication date: July 3, 2008Inventors: Lisa C. Chacon, Adam J. G. Ellison, George B. Hares, Jeffrey T. Kohli, Josef C. Lapp, Robert Morena
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Patent number: 7338982Abstract: A mesoporous material is described. It includes a network of interconnected pores within an L3 phase structure. The pores include pore walls of a silicate material functionalized with at least one metal cation—usually a transition metal. Articles which include the mesoporous material are also disclosed, along with methods for making the mesoporous material.Type: GrantFiled: June 15, 2004Date of Patent: March 4, 2008Assignee: General Electric CompanyInventors: Sergio Paulo Martins Loureiro, Mohan Manoharan
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Publication number: 20080038176Abstract: The invention relates to unsymmetrical nanoscale or mesoscopic particles, and to a method for preparing the same. Said particles are characterized by a surface F1 and the zone Z2 carries groups F2 different from the groups F1, the zone Z1 being free of groups F2 and the zone Z2 being free of groups F1. The method of preparation comprises the following steps: 1) the zone Z2 of the surface of the initial particles is masked by fixing a polymer nodule thereto; 2) the masked particles obtained at the end of step 1) are treated in order to modify the nonmasked surface zone Z1 thereof; 3) the polymer nodule is removed after modifying the zone Z1; 4) optionally, the surface of the zone Z2 of the particles is modified following the demasking process.Type: ApplicationFiled: November 4, 2004Publication date: February 14, 2008Applicants: Centre National De La Recherche Scientifique, Cpe Lyon Formation Continue Et Recherche, Universite Paul Sabatier, Universite Des Sciences Et TechnologiesInventors: Etienne Duguet, Celine Poncet-Legrand, Serge Ravaine, Elodie Bourgeat-Lami, Stephane Reculusa, Christophe Mingotaud, Marie-Helene Delville, Franck Pereira
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Publication number: 20080011190Abstract: Nepheline syenite powder with a controlled particle size where 99.9% of the particles are less than 6 microns, which powder has a moisture content of less than 0.8% and an Einlehner Abrasive Value of less than 100 and products using this fine grain ultra fine nepheline syenite powder.Type: ApplicationFiled: May 11, 2007Publication date: January 17, 2008Inventors: Scott Van Remortel, Frank Cangelosi, Jerry William Janik
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Patent number: 7297318Abstract: Methods for the removal of lead from a metal silicate during the process of manufacturing of such a material are provided. With the reliance upon lower cost starting silicon dioxide starting materials that are known to exhibit elevated amounts of heavy metal therein for the purpose of producing metal silicates (such as sodium silicate, as one example), it has been realized that removal of significant amounts of such heavy metals is necessary to comply with certain regulatory requirements in order to provide a finished material that exhibits the same low level of heavy metal contamination as compared with finished materials that are made from more expensive, purer starting silicon dioxides. Two general methods may be followed for such decontamination purposes. One entails the introduction of a calcium phosphate material, such as dicalcium phosphate, tricalcium phosphate, and/or hydroxyapatite, to a formed metal silicate solution but prior to filtering.Type: GrantFiled: November 17, 2005Date of Patent: November 20, 2007Assignee: J.M. Huber CorporationInventors: Yung-Hui Huang, John V. Offidani
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Patent number: 7229491Abstract: The invention relates to a geopolymeric cement or binder comprising an amorphous vitreous matrix consisting of a poly(sialate-disiloxo)-type geopolymeric compound, having approximation formula (Na, K, Ca)(—Si—O—Al—O—Si—O—Si—O) or (Na, K, Ca)-PSDS. The inventive cement consists of a mixture of different varieties of polysialates in which the atomic ratio Si:Al varies between 2 and 5.5, the average of the Si:Al atomic ratio values as measured with the electronic microprobe being close to between 2.8 and 3. The remaining components of the geopolymeric cement or binder, such as mellilite particles, aluminosilicate particles and quartz particles, are not used in said Si:Al atomic ratio calculation. The geopolymeric structure of type (K, Ca)-Poly(sialate-disiloxo) (K, Ca)-PSDS is between 50% and 60% more mechanically resistant than that of type (K, Ca)-Poly(sialate-siloxo) (K, Ca)—PSS of the prior art.Type: GrantFiled: May 22, 2003Date of Patent: June 12, 2007Assignee: Red Lion Cement Technology LimitedInventors: Joseph Davidovits, Ralph Davidovits
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Patent number: 7201885Abstract: Methods for the removal of lead from a metal silicate during the process of manufacturing of such a material are provided. With the reliance upon lower cost starting silicon dioxide starting materials that are known to exhibit elevated amounts of heavy metal therein for the purpose of producing metal silicates (such as sodium silicate, as one example), it has been realized that removal of significant amounts of such heavy metals is necessary to comply with certain regulatory requirements in order to provide a finished material that exhibits the same low level of heavy metal contamination as compared with finished materials that are made from more expensive, purer starting silicon dioxides. Two general methods may be followed for such decontamination purposes. One entails the introduction of a calcium phosphate material, such as dicalcium phosphate, tricalcium phosphate, and/or hydroxyapatite, to a formed metal silicate solution but prior to filtering.Type: GrantFiled: November 17, 2005Date of Patent: April 10, 2007Assignee: J.M. Huber CorporationInventors: Yung-Hui Huang, John V. Offidani
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Patent number: 7166271Abstract: Disclosed is a composite material comprising a boehmite substrate coated with a precipitated silica, the composite having a BET specific surface area of from 1 m2/g to 50 m2/g, such that the composite material has a % silica coating parameter value of about 5% to about 50%. Also disclosed is a dentifrice comprising this composite material. When included in a dentifrice composition, the composite material not only provides excellent abrasive and cleaning performance but also has compatibility with other ingredients used in dentifrice formulations, such as fluoride, flavors and cationic species.Type: GrantFiled: October 28, 2003Date of Patent: January 23, 2007Assignee: J.M. Huber CorporationInventors: Jason T. Zapf, William C. Fultz, Sung-Tsuen Liu, Mark E. Wozniak
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Patent number: 7166265Abstract: A process for the preparation of mesostructured organofunctional silica and silica-alumina compositions using a hydrolyzable organosilane compound is described. The process uses a water soluble silicate to form the compositions, which have hexagonal, wormhole or foam mesostructures. The compositions are useful for catalytic and sorption applications.Type: GrantFiled: November 20, 2003Date of Patent: January 23, 2007Assignee: Board of Trustees of Michigan State UniversityInventors: Thomas J. Pinnavaia, Jainisha R. Shah, Seong-Su Kim
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Patent number: 7128892Abstract: Mesoporous hexagonal, cubic, lamellar, wormhole, or cellular foam aluminosilicates, gallosilicates and titanosilicates derived from protozeolitic seeds using an ionic structure directing agent are described. The silicon and aluminum, gallium or titanium centers in the structures are stable so that the framework of the structure does not collapse when heated in the presence of water or water vapor (steam). The steam stable compositions can be used as catalysts for hydrocarbon conversions, including the fluidized bed catalytic cracking and the hydrocracking of petroleum oils, and other reactions of organic compounds.Type: GrantFiled: October 2, 2003Date of Patent: October 31, 2006Assignee: Board of Trustees of Michigan State UniversityInventors: Thomas J. Pinnavaia, Wenzhong Zhang, Yu Liu
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Patent number: 7125532Abstract: Process for the manufacture of high-purity alumino-silicates which are dispersible in aqueous and/or aqueous-acidic media by hydrolysis of aluminum compounds and organosilicon compounds.Type: GrantFiled: January 23, 2002Date of Patent: October 24, 2006Assignee: Sasol Germany GmbHInventors: Andrea Brasch, Klaus Diblitz, Arnold Meyer
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Patent number: 7097818Abstract: Precipitated silica or silicates, obtainable by acid precipitation of aqueous silicate solutions while maintaining a constant alkali number of at least 1.Type: GrantFiled: January 31, 2005Date of Patent: August 29, 2006Assignee: Degussa AGInventors: Gottlieb-Georg Lindner, Robert Kuhlmann, Claus-Peter Drexel
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Patent number: 7060239Abstract: The present invention relates to an icosahedral, quasicrystalline compound or compound present in the form of an approximant having the nominal composition: TivCrwAlxSiyOz, in which v=60-65; w=25-30; x=0-6; Y=8-15; z=8-20; and in which the atom percent of oxygen is in the range of between 8 and 15%, and that of aluminum in the range of between 2 to 5%. Due to their layered structure and ceramic intermediate layers, compounds of this type exhibit excellent properties, in particular for use as coatings for gas turbine components, such as for example, rotor blades or guide vanes.Type: GrantFiled: March 31, 2003Date of Patent: June 13, 2006Assignee: Alstom Technology Ltd.Inventors: Valery Shklover, Maxim Konter, Anton Kaiser, Kenneth Franklin Kelton
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Patent number: 7052665Abstract: Highly ordered mesoporous silica molecular materials are prepared using sodium silicate as a silica source, sulfuric acid and nonionic poly(alkylene oxide) surfactants or nonionic amphiphilic bloc copolymers as structure-directing agents. The mesoporous silica materials obtained have hexagonal and cubic structures, uniform pore size and high surface areas.Type: GrantFiled: November 1, 2002Date of Patent: May 30, 2006Assignee: Silicycle Inc.Inventors: Luc Fortier, Pierre Fournier, Serge Kaliaguine, Do Trong On
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Patent number: 7005118Abstract: This invention relates to a new composition of high surface area materials suitable for adsorption of both organic and inorganic species and as a component of catalysts useful for the transformation of hydrocarbons into a variety of products. These materials are composed by mesoporous spherical particles that have large sorption capacity, as demonstrated by the uptake of nitrogen at 78 K having a diameter of 0.1 to 1.0 microns, a mean pore diameter of 2.0 nm to 4.0 nm, a surface area of 750 to 1050 m2/g and a mean pore volume of 0.75 to 1.0 ml/g. The typical inner structure is composed of nanotubes having diameters around 3.5 nm aligned along the radius of the spherical particles, with surface areas around 1,000 m2/g, depending on the surfactant (C16H33N(CH3)3Br) to co-solvent (CnH2n+1OH, where n=2,3, or CH3COCH3) molar ratio.Type: GrantFiled: July 17, 2003Date of Patent: February 28, 2006Assignee: Instituto Mexicano del PetroleoInventors: Eduardo Terres Rojas, Jose Manuel Dominguez Esquivel
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Patent number: 6939825Abstract: It is to provide a catalyst carrier having large pore size and porosity and a small pressure loss. The catalyst carrier is characterized by covering a surface of each particle in a silicon-containing ceramic carrier with alumina thin film, and is produced by immersing a carrier having an oxide film of a silicide in its surface in a solution of aluminum containing metal compound, drying by heating, calcining, subjecting to an immersion treatment in hot water and thereafter firing.Type: GrantFiled: June 22, 2000Date of Patent: September 6, 2005Assignee: Ibiden Co., Ltd.Inventors: Kazushige Ohno, Teruo Komori, Akira Hasegawa, Noriyoshi Kakuta
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Patent number: 6908604Abstract: There is provided macrostructures of porous inorganic material which can have controlled size, shape, and/or porosity and a process for preparing the macrostructures. The macrostructures comprise a three-dimension network of particles of porous inorganic materials. The process for preparing the macrostructures involves forming an admixture containing a porous organic ion exchanger and a synthesis mixture capable of forming the porous inorganic material and then converting the synthesis mixture to the porous inorganic material. After formation of the composite material, the porous organic ion exchanger can be removed from the composite material to obtain the macrostructures.Type: GrantFiled: April 5, 2002Date of Patent: June 21, 2005Assignee: ExxonMobil Chemical Patents Inc.Inventors: Per Johan Sterte, Lubomira Borislavova Tosheva, Valentin Panov Valtchev, Svetlana Ivanova Mintova
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Patent number: 6890503Abstract: The present development is a silica additive for use in rubbers and similar cross-linked materials having a silicon atom intercalated within an oxygenated framework. The additive may be prepared starting with crystalline, fused or amorphous silica powder, thereby reducing the cost of the additive as compared to using precipitated silica.Type: GrantFiled: April 30, 2002Date of Patent: May 10, 2005Assignee: Minop Co.Inventors: Joseph A. Mula, Harvey Kaufman, Thomas A. Cole
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Patent number: 6800266Abstract: Hybrid mesoporous molecular sieve silica compositions which have intergrown wormhole domains and lamellar or hexagonal domains and prepared from mixtures of water soluble silicate precursors and amine surfactant templates through a neutralization reaction are described. The silica compositions are stable above 600° C.Type: GrantFiled: January 18, 2001Date of Patent: October 5, 2004Assignee: Board of Trustees of Michigan State UniversityInventors: Thomas J. Pinnavaia, Thomas R. Pauly, Seong-Su Kim
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Patent number: 6770258Abstract: Mesoporous hexagonal, cubic or wormhole aluminosilicates derived from zeolite seeds using an ionic structure directing agent are described. The aluminum in the structures is stable so that the framework of the structures does not collapse when heated in the presence of water or water vapor (steam). The steam stable aluminosilicates can be used as acid catalysts for hydrocarbon conversions, including the fluidized bed catalytic cracking and the hydrocracking of petroleum oils, and other cracking of organic compounds.Type: GrantFiled: April 23, 2002Date of Patent: August 3, 2004Assignee: Board of Trustees of Michigan State UniversityInventors: Thomas J. Pinnavaia, Wenzhong Zhang, Yu Liu
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Patent number: 6767858Abstract: The invention is directed to a method of synthesizing aluminophosphate and silicoaluminophosphate molecular sieves and in particular to the synthesis of aluminophosphate and silicoaluminophosphate molecular sieves using N-methylethanolamine as template with or without a source of fluoride. The use of N-methylethanolamine as template results in good quality AlPO4 of CHA framework type and SAPO molecular sieves of CHA framework type with low levels of silicon in high yield.Type: GrantFiled: February 20, 2003Date of Patent: July 27, 2004Assignee: ExxonMobil Chemical Patents Inc.Inventors: Guang Cao, Matu J. Shah
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Patent number: 6746659Abstract: Mesoporous hexagonal, cubic, lamellar, wormhole, or cellular foam aluminosilicates, gallosilicates and titanosilicates derived from protozeolitic seeds using an ionic structure directing agent are described. The silicon and aluminum, gallium or titanium centers in the structures are stable so that the framework of the structure does not collapse when heated in the presence of water or water vapor (steam). The steam stable compositions can be used as catalysts for hydrocarbon conversions, including the fluidized bed catalytic cracking and the hydrocracking of petroleum oils, and other reactions of organic compounds.Type: GrantFiled: February 21, 2001Date of Patent: June 8, 2004Assignee: Board of Trustees of Michigan State UniversityInventors: Thomas J. Pinnavaia, Wenzhong Zhang, Yu Liu
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Publication number: 20040087433Abstract: The invention relates to synthetic aluminum silicates having a nepheline or carnegieite structure which have a thickening effect in aqueous systems of suspensions and solutions. The invention further relates to the preparation of such synthetic aluminum silicates and their use as thickeners and suspending and thixotropic agents for ceramic bodies, glazes and enamels. Finally, glaze and enamel slips, ceramic bodies, colors and pastes containing the above mentioned synthetic aluminum silicates are also provided.Type: ApplicationFiled: January 14, 2003Publication date: May 6, 2004Inventor: Hans Herold
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Publication number: 20040082466Abstract: The invention is directed to a method of synthesizing a molecular sieve. In particular, the invention is directed to a method for synthesizing a molecular sieve, especially a silicoaluminophosphate molecular sieve, in the presence of a templating agent and a polymeric base. The invention is also directed to formulating the molecular sieve into a catalyst useful in a process for producing olefin(s), preferably ethylene and/or propylene, from a feedstock, preferably an oxygenate containing feedstock.Type: ApplicationFiled: October 22, 2003Publication date: April 29, 2004Inventors: Guang Cao, Matu J. Shah
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Patent number: 6723297Abstract: An acidic amorphous silica-alumina having large specific surface area and a large pore volume, a carrier complex and a hydrotreating catalyst containing said acidic amorphous silica-alumina, in particular a hydrocracking catalyst containing said acidic amorphous silica-alumina in combination with a modified zeolite-Y for treating petroleum hydrocarbon materials to produce middle distillates, and processes for the preparation thereof. Said amorphous silica-alumina has a SiO2 content of 10-50 wt %, a specific surface area of 300-600 m2/g, a pore volume of 0.8-1.5 ml/g and an IR acidity of 0.25-0.60 mmol/g. The catalyst according to the present invention shows a relatively high activity and mid-distillate selectivity and can be particularly used in hydrocracking process for producing mid-distillates in a higher yield.Type: GrantFiled: April 25, 2002Date of Patent: April 20, 2004Assignees: China Petrochemical Corp., Fushun Research Institute of Petroleum & Petrochemical, SINOPECInventors: Song Chen, Tingyu Li, Guangwei Cao, Minghua Guan
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Publication number: 20040052714Abstract: This invention relates to a new composition of high surface area materials suitable for adsorption of both organic and inorganic species and as a component of catalysts useful for the transformation of hydrocarbons into a variety of products. These materials are composed by mesoporous spherical particles that have large sorption capacity, as demonstrated by the uptake of nitrogen at 78 K having a diameter of 0.1 to 1.0 microns, a mean pore diameter of 2.0 nm to 4.0 nm, a surface area of 750 to 1050 m2/g and a mean pore volume of 0.75 to 1.0 ml/g. The typical inner structure is composed of nanotubes having diameters around 3.5 nm aligned along the radius of the spherical particles, with surface areas around 1,000 m2/g, depending on the surfactant (C16H33N(CH3)3 Br) to co-solvent (CnH2n+1OH, where n=2,3, or CH3COCH3) molar ratio.Type: ApplicationFiled: July 17, 2003Publication date: March 18, 2004Applicant: Instituto Mexicano del PetroleoInventors: Eduardo Terres Rojas, Jose Manuel Dominguez Esquivel
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Patent number: 6702993Abstract: Mesoporous hexagonal, cubic or wormhole aluminosilicates derived from zeolite seeds using an ionic structure directing agent are described. The aluminum in the structures is stable so that the framework of the structures does not collapse when heated in the presence of water or water vapor (steam). The steam stable aluminosilicates can be used as acid catalysts for hydrocarbon conversions, including the fluidized bed catalytic cracking and the hydrocracking of petroleum oils, and other cracking of organic compounds.Type: GrantFiled: April 23, 2002Date of Patent: March 9, 2004Assignee: Board of Trustees of Michigan State UniversityInventors: Thomas J. Pinnavaia, Wenzhong Zhang, Yu Liu
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Patent number: 6699451Abstract: An inorganic polymeric aluminosilicate material and a method for preparing the same, are disclosed. Instead of having a fibrous structure, the material has a structure consisting of spindles with a length in the range of from 10 to 100 &mgr;m and a width in the range of from 2 to 20 &mgr;m. This polymeric alumino-silicate can be used for the production of antistatic layers.Type: GrantFiled: June 21, 2001Date of Patent: March 2, 2004Assignee: Eastman Kodak CompanyInventors: Jeannine Rigola, Olivier J. Poncelet, Didier J. Martin
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Publication number: 20040035751Abstract: The present invention relates to new mesoporous inorganic solids in the form of primary and/or secondary inorganic particles of D10≧1 &mgr;m and D50≧3 &mgr;m, preferably from D10≧2 &mgr;m and D50≧10 &mgr;m the size of which can go up to 10 mm, wherein the microporous volume (pores of size less than or equal to 2 &mgr;m) represents at most 10% of the total porous volume up to 300 nm.Type: ApplicationFiled: May 14, 2003Publication date: February 26, 2004Applicant: CECA, S.A.Inventor: Dominique Plee
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Patent number: 6660682Abstract: The invention is directed to a method of synthesizing a molecular sieve. In particular, the invention is directed to a method for synthesizing a molecular sieve, especially a silicoaluminophosphate molecular sieve, in the presence of a templating agent and a polymeric base. The invention is also directed to formulating the molecular sieve into a catalyst useful in a process for producing olefin(s), preferably ethylene and/or propylene, from a feedstock, preferably an oxygenate containing feedstock.Type: GrantFiled: November 30, 2001Date of Patent: December 9, 2003Assignee: Exxon Mobil Chemical Patents Inc.Inventors: Guang Cao, Matu J. Shah
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Patent number: 6596665Abstract: A mullite composition is comprised substantially of mullite grains that are essentially chemically bound wherein the composition has at least two adjoining regions that have substantially different microstructures. The composition may be produced by forming a mixture of one or more precursor compounds having the elements present in mullite; shaping the mixture into a porous green shape applying a nucleation control agent to a portion of the porous green shape and then heating the porous green shape under an atmosphere and to a temperature sufficient to form the mullite composition.Type: GrantFiled: August 29, 2001Date of Patent: July 22, 2003Assignee: Dow Global Technologies Inc.Inventors: Sten A. Wallin, John R. Moyer, Arthur R. Prunier, Jr.
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Patent number: 6585952Abstract: Mesoporous hexagonal, cubic or wormhole aluminosilicates derived from zeolite seeds using an ionic structure directing agent are described. The aluminum in the structures is stable so that the framework of the structures does not collapse when heated in the presence of water or water vapor (steam) The steam stable aluminosilicates can be used as acid catalysts for hydrocarbon conversions, including the fluidized bed catalytic cracking and the hydrocracking of petroleum oils, and other cracking of organic compounds.Type: GrantFiled: May 25, 2000Date of Patent: July 1, 2003Assignee: Board of Trustees operating Michigan State UniversityInventors: Thomas J. Pinnavaia, Wenzhong Zhang, Yu Liu
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Patent number: 6569400Abstract: The invention involves a process for production of macrostructures of a microporous material. The process is characterized by the fact that seeds formed in or introduced by ion exchange or adsorption to a porous organic ion exchanger with the desired size, shape and porosity are made to grow and form a continuous structure by further deposition of inorganic material from a synthesis solution under hydrothermal conditions. The organic ion exchanger can be eliminated by chemical destruction or dissolution and, in so doing, leaves behind an inorganic microporous structure with the size and shape of the employed organic ion exchanger.Type: GrantFiled: May 17, 1999Date of Patent: May 27, 2003Assignee: Exxon Mobil Chemical Patents Inc.Inventors: Per Johan Sterte, Lubomira Borislavova Tosheva, Valentin Panov Valtchev
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Publication number: 20030091492Abstract: Aerogels having a high density of hydroxyl groups and a more uniform pore size with fewer bottlenecks are described. The aerogel is exposed to a mixture of a supercritical fluid and water, whereupon the aerogel forms a high density of hydroxyl groups. The process also relaxes the aerogel into a more open uniform internal structure, in a process referred to as hydroetching. The hydroetching process removes bottlenecks from the aerogels, and forms the hydrogels into more standard pore sizes while preserving their high surface area.Type: ApplicationFiled: October 26, 2001Publication date: May 15, 2003Inventors: Glen Fryxell, Thomas S. Zemanian
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Publication number: 20030078159Abstract: Disclosed is a method for the manufacture of silicoaluminophosphate (SAPO) and/or aluminophosphate (ALPO) molecular sieves. The method includes maintaining the slurry of the as crystallized molecular sieve under substantially static conditions when stored after substantially complete crystallization and prior to recovery of the product.Type: ApplicationFiled: October 23, 2001Publication date: April 24, 2003Inventors: Machteld Maria Mertens, Brita Engels
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Patent number: 6531552Abstract: An olefin polymerization catalyst comprising the following components (A) and (B): Component (A): an ion-exchange layered silicate having an acid site of at most −8.2 pKa, the amount of the acid site is equivalent to at least 0.05 mmol/g of 2,6-dimethylpyridine consumed for neutralization; and Component (B): a compound of a transition metal belonging to Group 3 to Group 12 of the Periodic Table.Type: GrantFiled: January 10, 2001Date of Patent: March 11, 2003Assignee: Japan Polychem CorporationInventors: Hiroshi Nakano, Takao Tayano, Hideshi Uchino, Tadashi Takahashi
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Publication number: 20030027708Abstract: A method of exploring for a primary kaolin and producing products therefrom.Type: ApplicationFiled: July 18, 2001Publication date: February 6, 2003Inventors: Michael Ginn, Peter Akerley
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Publication number: 20020192155Abstract: There is provided macrostructures of porous inorganic material which can have controlled size, shape, and/or porosity and a process for preparing the macrostructures. The macrostructures comprise a three-dimension network of particles of porous inorganic materials. The process for preparing the macrostructures involves forming an admixture containing a porous organic ion exchanger and a synthesis mixture capable of forming the porous inorganic material and then converting the synthesis mixture to the porous inorganic material. After formation of the composite material, the porous organic ion exchanger can be removed from the composite material to obtain the macrostructures.Type: ApplicationFiled: April 5, 2002Publication date: December 19, 2002Inventors: Per Johan Sterte, Lubomira Borislavova Tosheva, Valentin Panov Valtchev, Svetlana Ivanova Mintova
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Patent number: 6485702Abstract: A composition of matter is provided including an inorganic porous material having wall portions defining mesopore-sized channels having a mean diameter of between about 15 Å and about 100 Å and a narrow diameter distribution of less than or equal to about 30 Å, the material having a void volume from the mesopore-sized channels of at least about 0.1 cc/g and a surface area of at least about 500 m2/g and having a number of hydroxyl groups of at least about 1.5 mmol of hydroxyl groups per gram of material, and exhibiting thermal and hydrothermal stability at temperatures up to about 500° C. Catalytic materials incorporating aluminum and other active metals, as well as a process for preparing the composition, are also disclosed.Type: GrantFiled: May 9, 2000Date of Patent: November 26, 2002Assignee: Intevep, S.A.Inventors: Juan Lujano, Jose Carrazza, Norma Valencia de Zapata
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Alkali earth aluminate silicate photoluminescent pigment which is activated by rare - earth elements
Publication number: 20020153510Abstract: An alkali earth aluminate-silicate photoluminescent pigment which is activated by rare-earth elements according to the invention has excellent luminescent properties such as high initial intensity and long afterglow time. The pigment may readily be used in the manufacture of luminescent plastics; rubbers, coatings and ceramic glazes because it appears neutral in aqueous medium and the sinters are easily crushed into powder. The pigment has the composition formula of MO.aAl2O3bSiO2cL:fX, in which MO is represented by at least one oxide selected from alkali earth metals such as SrO, CaO and MgO; L is a mineraliser selected from minerals, X is an activator selected from rare-earth elements; and a, b, c and f are variable factors having values in mole. The pigment is produced by firing selected ingredient materials in a controlled environment of a reducing atmosphere, filled with selected gases or elements, at a temperature of 1200-1450° C.Type: ApplicationFiled: June 7, 2001Publication date: October 24, 2002Inventors: Zhao Sun, Shi Min Su, Yu Jun Zhang, Zhong Li Zhu -
Patent number: 6468500Abstract: An aluminosilicate in an acicular form, a platy form, or a columnar form and having the composition represented by aM2O.bAl2O3.cSiO2.dRmAn.yH2O, wherein M is at least one of Na and K; R is one or more elements selected from the group consisting of Na, K, Ca and Mg; A is one or more members selected from the group consisting of CO3, SO4, NO3, OH and Cl; a is from 1 to 6; b is from 2 to 8; c is from 2 to 12; d is from 0 to 4; m is from 1 to 2; n is from 1 to 3; and y is from 0 to 32; a polishing agent including the aluminosilicate; and a detergent composition including the aluminosilicate.Type: GrantFiled: April 28, 2000Date of Patent: October 22, 2002Assignee: Kao CorporationInventors: Mikio Sakaguchi, Takanori Kotera, Masaharu Jyono, Ichiro Sakamoto
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Patent number: 6468492Abstract: The invention relates to a method to prepare an aluminosilicate polymer of the imogolite type. The method consists in treating an aluminium halide, with an alkyl orthosilicate, with an aqueous alkali in the presence of glass or silica particles, letting the mixture ripen at ambient temperature, and then heating it at 96-98° C. for long enough for the reaction to go to completion. The conditions of synthesis of the aluminosilicate polymer are thereby improved.Type: GrantFiled: January 4, 2001Date of Patent: October 22, 2002Assignee: Eastman Kodak CompanyInventor: Olivier J. Poncelet
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Patent number: 6430966Abstract: The present invention is a glass-ceramic material and method of making useful for joining at least two solid ceramic parts. The seal is a blend of MAO—MBOy—SiO2 that substantially matches a coefficient of thermal expansion of the solid electrolyte. According to the present invention, a series of glass ceramics in the MAO—MBOy—SiO2 system can be used to join or seal both tubular and planar ceramic solid oxide fuel cells, oxygen electrolyzers, and membrane reactors for the production of syngas, commodity chemicals and other products.Type: GrantFiled: July 30, 1999Date of Patent: August 13, 2002Assignee: Battelle Memorial InstituteInventors: Kerry D. Meinhardt, John D. Vienna, Timothy R. Armstrong, Larry R. Pederson
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Publication number: 20020098142Abstract: Process for the manufacture of high-purity alumino-silicates which are dispersible in aqueous and/or aqueous-acidic media by hydrolysis of aluminum compounds and organosilicon compoundsType: ApplicationFiled: January 23, 2002Publication date: July 25, 2002Inventors: Andrea Brasch, Klaus Diblitz, Arnold Meyer
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Patent number: 6418661Abstract: A hydrotalcite compound which has the excellent ability to absorb infrared rays and has excellent light transmission when contained in an agricultural film; a process for producing the compound; and an infrared absorber and an agricultural film both containing the compound. The hydrotalcite compound is characterized by retaining as the interlayer anions at least one kind of anions selected among ions of silicon-, phosphorus-, and boron-containing polymeric oxyacids and another kind of anions.Type: GrantFiled: August 1, 2000Date of Patent: July 16, 2002Assignee: Kyowa Chemical Industry Co LtdInventors: Hideo Takahashi, Akira Okada
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Publication number: 20020085972Abstract: The invention relates to a method to prepare an aluminosilicate polymer of the imogolite type. The method consists in treating an aluminium halide, with an alkyl orthosilicate, with an aqueous alkali in the presence of glass or silica particles, letting the mixture ripen at ambient temperature, and then heating it at 96-98° C. for long enough for the reaction to go to completion. The conditions of synthesis of the aluminosilicate polymer are thereby improved.Type: ApplicationFiled: January 4, 2001Publication date: July 4, 2002Inventor: Olivier J. Poncelet
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Patent number: 6413493Abstract: The invention describes a process for preparing P zeolites in which aluminate and silicate solutions are reacted in the presence of a P-zeolite seed.Type: GrantFiled: August 10, 1994Date of Patent: July 2, 2002Assignee: Unilever Patent Holdings B.V.Inventor: Abraham Araya
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Patent number: 6409978Abstract: A process for removing impurities contained in the crystal lattice of minerals, comprising the steps of forming a mixture of a mineral capable of structurally reorganizing its crystal lattice which contains an impurity in its crystal lattice and a halogen anion, and water; heating the mixture to the mineral's structural reorganization transition temperature; holding the mixture at the structural reorganization transition temperature for a sufficient period of time to allow the impurity to freely migrate from the lattice to combine with the halogen anion; and separating the combined impurity and anion from the mixture to render the mineral essentially free of the impurity. The process is applicable to numerous minerals and impurities, but is especially useful to remove arsenic from fluorspar. Numerous halogen anions can be employed, such as chlorides, fluorides, bromides and iodides, but the preferred halogen anion is a metal chloride such as calcium chloride.Type: GrantFiled: July 13, 2000Date of Patent: June 25, 2002Assignee: Svedala Industries, Inc.Inventors: Bobby P. Faulkner, John M. Paustian
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Publication number: 20020076374Abstract: The invention describes a process for preparing P zeolites in which aluminate and silicate solutions are reacted in the presence of a P-zeolite seed.Type: ApplicationFiled: August 10, 1994Publication date: June 20, 2002Inventor: ABRAHAM ARAYA