Forming Silica Gel Patents (Class 502/233)
  • Patent number: 10323108
    Abstract: A polymer having a long chain branching content peaking at greater than about 20 long chain branches per million carbon atoms, and a polydispersity index of greater than about 10 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution. A polymer having a long chain branching content peaking at greater than about 8 long chain branches per million carbon atoms, a polydispersity index of greater than about 20 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution. A polymer having a long chain branching content peaking at greater than about 1 long chain branches per chain, and a polydispersity index of greater than about 10 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: June 18, 2019
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Youlu Yu, Eric D. Schwerdtfeger, Max P. McDaniel, Alan L. Solenberger, Kathy S. Clear
  • Patent number: 10221362
    Abstract: A process for the production of a higher hydrocarbon useful as gasoline component from solid biomass is provided. The process provides for longer ZSM-5 condensation catalyst life by contacting the stable oxygenated hydrocarbon intermediate containing diols produced from digestion and hydrodoxygenation of the solid biomass to an amorphous silica alumina catalyst to reduce the diols content, and optionally removing water, prior to contacting with the ZSM-5 condensation catalyst.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: March 5, 2019
    Assignee: SHELL OIL COMPANY
    Inventors: Kimberly Ann Johnson, Joseph Broun Powell
  • Patent number: 10167243
    Abstract: An improved process for the production of a higher hydrocarbon from solid biomass is provided. Solid biomass that has been digested and hydrodeoxygenated in a liquid digestive solvent in the presence of a hydrothermal hydrocatalytic catalyst is separated to an organic rich phase and an aqueous rich phase containing diols. At least a portion of the aqueous rich phase is contacted with an acidic amorphous silica alumina catalyst producing monooxygenate-containing stream comprising water, organic monooxygenates, and unsaturated aliphatic hydrocarbons. At least a portion of the monooxygenate-containing stream is contacted with a solid acid condensation catalyst to produce a higher hydrocarbons stream. At least a portion of the organic rich phase is also contacted with a solid acid condensation catalyst to produce a higher hydrocarbons stream.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: January 1, 2019
    Assignee: SHELL OIL COMPANY
    Inventors: Joseph Broun Powell, Kimberly Ann Johnson
  • Patent number: 10150921
    Abstract: A process for the production of a higher hydrocarbon useful to produce diesel components from solid biomass is provided. The process provides for improved production of diesel components by contacting the stable oxygenated hydrocarbon intermediate containing diols produced from digestion and hydrodoxygenation of the solid biomass to an amorphous silica alumina catalyst to reduce the diols content, and removing water prior to contacting with the condensation catalyst to produce the higher hydrocarbon.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: December 11, 2018
    Assignee: SHELL OIL COMPANY
    Inventors: Kimberly Ann Johnson, Joseph Broun Powell
  • Patent number: 9879101
    Abstract: A polymer having a long chain branching content peaking at greater than about 20 long chain branches per million carbon atoms, and a polydispersity index of greater than about 10 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution. A polymer having a long chain branching content peaking at greater than about 8 long chain branches per million carbon atoms, a polydispersity index of greater than about 20 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution. A polymer having a long chain branching content peaking at greater than about 1 long chain branches per chain, and a polydispersity index of greater than about 10 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: January 30, 2018
    Assignee: Chevron Phillips Chemical Company, LP
    Inventors: Youlu Yu, Eric D. Schwerdtfeger, Max P. McDaniel, Alan L. Solenberger, Kathy S. Clear
  • Patent number: 9845491
    Abstract: Provided herein is technology relating to isolating nucleic acids. In particular, the technology relates to methods and kits for extracting nucleic acids from problematic samples such as stool.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: December 19, 2017
    Assignee: Exact Sciences Corporation
    Inventors: Janelle J. Bruinsma, Michael J. Domanico, Graham P. Lidgard, Hongzhi Zou, William G. Weisburg, Hemanth D. Shenoi, James P. Light, II, Keith Kopitzke, John Zeis
  • Patent number: 9365891
    Abstract: Disclosed is a technique for binding microparticles to patterned bonding pads of a metal (e.g., gold) formed on a support. The microparticles each carry a nucleic acid synthetase or DNA probe immobilized thereon for capturing a nucleic acid sample fragment. The technique involves forming, on a support surface, a film having a thickness equivalent to that of the bonding pads; controlling the size of microparticles with respect to the size of bonding pads; and thereby immobilizing microparticles each bearing a single nucleic acid sample fragment to the bonding pads in a one-to-one manner in a grid form. This allows high-density regular alignment and immobilization of many types of nucleic acid fragment samples on a support and enables high-throughput analysis of nucleic acid samples. Typically, immobilization of microparticles at 1-micrometer intervals easily provides a high density of 106 nucleic acid fragments per square millimeter.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: June 14, 2016
    Assignee: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Koshin Hamasaki, Toshiro Saito
  • Patent number: 9358528
    Abstract: A catalytic composition useful for the conversion of an olefin selected from the group consisting of propylene, isobutylene or mixtures thereof, to acrylonitrile, methacrylonitrile, and mixtures thereof. The catalytic composition comprises a complex of metal oxides comprising bismuth, molybdenum, iron, cerium and other promoters, wherein the ratio of bismuth to cerium ratio in the composition is greater than or equal to 0.45 and less than or equal to 1.5.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: June 7, 2016
    Assignee: INEOS EUROPE AG
    Inventors: James F. Brazdil, Mark A. Toft, Charles J. Besecker, Michael J. Seely
  • Patent number: 9040448
    Abstract: The present invention relates to a method of preparing a spherical mesoporous silica structure containing silver nanoparticles dispersed therein by adding a silver nitrate solution to an aqueous surfactant solution and performing a sol-gel process and to spherical mesoporous silica prepared thereby. The spherical mesoporous silica is cost-effective compared to a conventional method that uses silver nanoparticles as a raw material, because the silver nitrate solution that is inexpensive compared to silver nanoparticles is used. Also, the spherical mesoporous silica can be with high productivity in large amounts, and thus is easily commercialized. Moreover, because silver nanoparticles are incorporated into the pores of the mesoporous silica, the silver nanoparticles are used stably and do not change color and odor. In addition, the spherical mesoporous silica exhibits various additional effects, including far-infrared ray emission and deodorization, attributable to silica.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: May 26, 2015
    Assignee: THERMOLON KOREA CO., LTD.
    Inventors: Chung Kwon Park, Sang Cheol Han
  • Patent number: 8816113
    Abstract: A novel bidentate catalytic ligand of general formula (I) is described. R represents a hydrocarbyl aromatic structure having at least one aromatic ring to which Q1 and Q2 are each linked, via the respective linking group, if present, on available adjacent atoms of the at least one aromatic ring. The groups X3 and X4 represent radicals joined via tertiary carbon atoms to the respective atom Q1 and the groups X1 and X2 represent radicals joined via primary, or substituted aromatic ring carbon atom(s) to the respective atom Q2. A and B represent an optional lower alkylene linking group. Q1 and Q2 each represent phosphorus, arsenic or antimony. A process for the carbonylation of ethylenically unsaturated compounds comprising reacting the compound with carbon monoxide in the presence of a source of hydroxyl groups, optionally, a source of anions and catalyst system obtainable by combining a metal of Group 8, 9 or 10 or a compound thereof and the bidentate ligand of general formula (I) is also described.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: August 26, 2014
    Assignee: Lucite International UK Limited
    Inventors: Graham Ronald Eastham, Mark Waugh, Paul Pringle, Tamara Fanjul Solares
  • Patent number: 8741595
    Abstract: A process comprises (a) providing (1) at least one sample suspected of comprising at least one coliform strain, (2) at least one culture device comprising at least one culture medium that is hydrated or hydratable, and (3) at least one particulate concentration agent that is substantially optically transparent when in contact with the culture medium in the culture device when the culture medium is hydrated; (b) placing the particulate concentration agent in contact with the sample such that at least a portion of the coliform strain is bound to the particulate concentration agent to form coliform-bound particulate concentration agent; (c) placing the coliform-bound particulate concentration agent in contact with the culture medium; (d) incubating the culture device comprising the coliform-bound particulate concentration agent in contact with the culture medium, the culture medium being hydrated; and (e) optically detecting the presence of the coliform strain without separating the coliform strain from the part
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: June 3, 2014
    Assignee: 3M Innovative Properties Company
    Inventor: Manjiri T. Kshirsagar
  • Patent number: 8722573
    Abstract: The present invention relates to a novel sulfonated carbon silica (SCS) composite material and a process for the preparation thereof. The synthesized SCS composite material on calcination yields the hierarchical mesoporous silica (MS) and further finds application as catalyst in two industrially important reactions namely phenol butylation and glycerol acetalization.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: May 13, 2014
    Assignee: Council of Scientific & Industrial Research
    Inventors: Nagabhatla Viswanadham, Devaki Nandan
  • Patent number: 8501036
    Abstract: The invention relates to Group 1 metal/silica gel compositions comprising silica gel and an alkali metal or alloy, wherein Group 1 metals or alloys are absorbed into the silica gel pores. The invention relates to producing hydrogen gas comprising contacting a Group 1 metal/silica gel composition with water, and further relates to an alkali metal reduction of an organic compound, the improvement comprising contacting the organic compound with a Group 1 metal/silica gel composition. In these embodiments, the Group 1 metal/silica gel composition reacts with dry O2. The invention also relates to producing hydrogen gas comprising contacting a Group 1 metal/silica gel composition with water, and further relates to an alkali metal reduction of an organic compound, the improvement comprising contacting the organic compound with a Group 1 metal/silica gel composition. In these embodiments, the Group 1 metal/silica gel composition produced does not react with dry O2.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: August 6, 2013
    Assignees: SiGNa Chemistry, Inc., Board of Trustees of Michigan State University
    Inventors: Michael Lefenfeld, James L. Dye
  • Patent number: 8222470
    Abstract: A process for oligomerizing an olefinic hydrocarbon feed is described which consists of bringing said feed into contact with a catalyst comprising a silica-alumina, the silica content of said catalyst being in the range 5% to 95% by weight, said catalyst being prepared using a process comprising at least: a) mixing at least one alumina compound which is partially soluble in an acid medium with either at least one silica compound which is completely soluble in the reaction mixture or a combination formed by at least one silica compound and at least one alumina compound, said silica and alumina compounds being completely soluble in the reaction mixture, in order to form a solid precursor of said catalyst; b) hydrothermal treatment of the solid derived from step a) by calcining in moist air for a period in the range 4 to 7 hours.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: July 17, 2012
    Assignee: IFP Energies nouvelles
    Inventors: Vincent Coupard, Alexandra Chaumonnot, Laurent Simon
  • Patent number: 8183173
    Abstract: A method of preparing a catalyst comprising aging a silica support in an alkaline solution to produce an alkaline aged silica support, removing at least a portion of the alkaline solution from the alkaline aged silica support to produce a dried silica support, and activating the silica support to produce a catalyst composition, wherein alkaline aging lowers the surface area of the silica support to less than about 50% of the original value and wherein activation of the silica support is carried out in batches of equal to or greater than about 500 lbs for a time period of less than about 8 hours.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: May 22, 2012
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Elizabeth A. Benham, Ted Cymbaluk, George Neil
  • Patent number: 8137651
    Abstract: A method for preparing a silica aerogel in the form of permanently hydrophobic powder in a short time, wherein the silica aerogel has a high specific surface area and high functionality, and is prepared by subjecting a wet gel to a solvent exchange process and a silylizing process in a mixture solvent including a silylizing agent at the same time, the wet gel being prepared using a water glass as a raw material and adding a surfactant at a room temperature.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: March 20, 2012
    Inventor: Dong Jin Yeo
  • Patent number: 8076262
    Abstract: Broad molecular weight polyethylene and polyethylene having a bimodal molecular weight profile can be produced with chromium oxide based catalyst systems employing alkyl silanols. The systems may also contain various organoaluminum compounds. Catalyst activity and molecular weight of the resulting polyethylene may also be tuned using the present invention.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: December 13, 2011
    Assignee: Univation Technologies, LLC
    Inventors: Kevin J. Cann, Minghui Zhang, John H. Moorhouse, Maria A. Apecetche
  • Patent number: 8007762
    Abstract: The invention relates to Group 1 metal/silica gel compositions comprising silica gel and an alkali metal or alloy, wherein Group 1 metals or alloys are absorbed into the silica gel pores. The invention relates to producing hydrogen gas comprising contacting a Group 1 metal/silica gel composition with water, and further relates to an alkali metal reduction of an organic compound, the improvement comprising contacting the organic compound with a Group 1 metal/silica gel composition. In these embodiments, the Group 1 metal/silica gel composition reacts with dry O2. The invention also relates to producing hydrogen gas comprising contacting a Group 1 metal/silica gel composition with water, and further relates to an alkali metal reduction of an organic compound, the improvement comprising contacting the organic compound with a Group 1 metal/silica gel composition. In these embodiments, the Group 1 metal/silica gel composition produced does not react with dry O2.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: August 30, 2011
    Assignees: SiGNa Chemistry, Inc., Board of Trustees of Michigan State University
    Inventors: Michael Lefenfeld, James L. Dye
  • Publication number: 20110160042
    Abstract: The present invention provides a method for constructing a fractal network structure in hydrogen storage material to improve the hydrogen uptake at room temperature, the method including the following steps: providing a hydrogen storage material comprising a source and a receptor of hydrogen atoms, wherein the source is disposed above the receptor, and a chemical bridge is disposed between the source and the receptor, wherein the chemical bridge is composed of precursor material; and treating the hydrogen storage material to construct a fractal network structure of mesopores and micropores in the receptor, so as to enhance the hydrogen storage capacity of the hydrogen storage material at room temperature.
    Type: Application
    Filed: October 15, 2010
    Publication date: June 30, 2011
    Applicant: Institute of Nuclear Energy Research Atomic Energy Council, Executive Yuan
    Inventors: CHENG-SI TSAO, Ming-Sheng Yu, Yi-Ren Tzeng, Tsui-Yun Chung, Hsiu-Chu Wu, Haw-Yeu Chuang, Chien-Hung Chen, Kang-Ning Lee, Hua-Wen Chang, Huan-Hsiung Tseng
  • Patent number: 7964525
    Abstract: A stable catalyst with low volumetric shrinkage and a process for making the stable catalyst with low volumetric shrinkage is disclosed. The catalyst is made by sulfiding a catalyst precursor containing at least a Group VIB metal compound; at least a promoter metal compound selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, having an oxidation state of either +2 or +4; optionally at least a ligating agent; optionally at least a diluent. In the process of making the catalyst, the catalyst precursor is first shaped then heat treated at a temperature of 50° C. to 200° C. for about 15 minutes to 12 hours, wherein the catalyst precursor still has a low (less than 12%) volumetric shrinkage after exposure to a temperature of at least 100° C. for at least 30 minutes, e.g., in sulfidation or in a hydrotreating reactor.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: June 21, 2011
    Assignee: Chevron U.S.A. Inc.
    Inventors: Dennis Dykstra, Theodorus Maesen, Alexander E. Kuperman, Soy Uckung, Darren Fong
  • Patent number: 7964526
    Abstract: A method for preparing a bulk multi-metallic suitable for hydrotreating heavy oil feeds is provided. In the process of preparing the catalyst precursor which is subsequently sulfided to form the bulk catalyst, a catalyst precursor filter cake is treated with at least a chelating agent, resulting in a catalyst precursor with optimum porosity with at least 90% of the pores being macropores, and having a total pore volume of at least 0.12 g/cc.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: June 21, 2011
    Assignee: Chevron U.S.A. Inc.
    Inventors: Theodorus Maesen, Alexander E. Kuperman, Dennis Dykstra, Soy Uckung, Darren Fong
  • Patent number: 7959728
    Abstract: A process for wet pulverizing mesoporous silica particles while a surfactant exists in mesopores, and mesoporous silica particles having an average particle diameter of 1 ?m or less, wherein the volume of mesopores having a diameter of 2 to 50 nm is 0.7 mL/g or more and the geometric standard deviation of a mesopore distribution is 2.0 or less. Mesoporous silica particles having a particle diameter in a submicron order can be obtained at a high yield without causing the marked collapse of mesopores and can be produced efficiently by using an ordinary pulverizer and safely by using an aqueous medium. The mesoporous silica particles having an average particle diameter of 1 ?m or less are useful as an ink absorbent for ink jet recording paper, low-dielectric film, catalyst support, separating agent, adsorbent and medical carrier for medicines.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: June 14, 2011
    Assignee: Tokuyama Corporation
    Inventors: Kentaro Fukuda, Kenji Fukunaga, Hiroya Yamashita
  • Patent number: 7754646
    Abstract: Highly functionalized, porous organosilica particles and methods of their synthesis are described that employ high amounts of functional silane such as 3-mercaptopropyl trimethoxysilane. Silane particle diameters are controlled from less than 1 ?m to over 100 ?m. The particles have a high surface area due to their advantageous internal structures, which consist of large pores, typically up to 10 ?m that are linked by small channels of typically about 20 nm diameter. Isothiocyanate modified fluorescent dyes can enter and react with thiol groups inside the pores. The invention also provides clear silica shells of controlled thicknesses to protect fluorescent signals and provide an independent parameter for distinguishing particle types based on light scattering off different sized particles. The particles are stable and useful for many purposes, particularly for optical bar coding in combinatorial synthesis of polymers such as nucleic acid, polypeptide, and other synthesized molecules.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: July 13, 2010
    Assignee: Nanomics Biosystems Pty Ltd
    Inventors: Mathias Trau, Angus Johnston
  • Patent number: 7709410
    Abstract: The invention relates to Group 1 metal/silica gel compositions comprising silica gel and an alkali metal or an alkali metal alloy. The compositions of the inventions are described as Stage 0, I, II, and III materials. These materials differ in their preparation and chemical reactivity. Each successive stage may be prepared directly using the methods described below or from an earlier stage material. Stage 0 materials may, for example, be prepared using liquid alloys of Na and K which are rapidly absorbed by silica gel (porous SiO2) under isothermal conditions, preferably at or just above room temperature, to form loose black powders that retain much of the reducing ability of the parent metals. When the low melting Group 1 metals are absorbed into the silica gel, a mild exothermic reaction produces Stage I material, loose black powders that are indefinitely stable in dry air. Subsequent heating to 400° C. produces Stage II materials, which are also loose black powders. Further heating above 400° C.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: May 4, 2010
    Assignee: SiGNa Chemistry, Inc.
    Inventors: Michael Lefenfeld, James L. Dye
  • Patent number: 7704914
    Abstract: A photocatalyst which has high catalytic activity, is nontoxic, has a long life, can utilize visible light as it is for photocatalytic reactions, and is useful especially for hydrogen generation; and a process for producing the same. The photocatalyst comprises cadmium sulfide, has a capsule structure, wherein platinum is supported thereto. It can be obtainable by bubbling H2S gas into a liquid to which particles of cadmium oxide have been added.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: April 27, 2010
    Assignees: Nittetsu Mining Co., Ltd., Japan Sience and Technology Agency
    Inventors: Kazuyuki Tohji, Akira Kishimoto, Takafumi Atarashi
  • Patent number: 7700513
    Abstract: Disclosed are catalyst systems and methods of making the catalyst systems for the polymerization of an olefin containing a solid titanium catalyst component containing an inorganic titanium compound, a magnesium alcohol adduct made from an inorganic magnesium compound and an alcohol, and a porous support having at least one of a certain specific surface area, a certain pore volume, and a certain median particle size. The catalyst system may further contain an organoaluminum compound and optionally an organosilicon compound. Also disclosed are methods of making polyolefins.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: April 20, 2010
    Assignee: BASF Catalysts LLC
    Inventors: Zhidong Zhu, Main Chang
  • Patent number: 7648939
    Abstract: The invention provides an unsupported catalyst composition which comprises one or more Group VIb metals, one or more Group VIII metals, one or more zeolites, and, optionally, a refractory oxide material. A (co)precipitation preparation process is described and also use of the composition in hydrocracking.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: January 19, 2010
    Assignee: Shell Oil Company
    Inventors: László Domokos, Hermanus Jongkind, Marcello Stefano Rigutto, Willem Hartman Jurriaan Stork, Beatrijs Anna Stork-Blaisse, legal representative, Esther Hillegarda Carola Van De Voort
  • Patent number: 7598201
    Abstract: The invention relates to a process for preparing an essentially spherical support for olefin polymerization catalysts, which comprises the steps: preparation of a hydrogel comprising a cogel of silicon oxide and at least one further metal oxide, if appropriate, washing of the hydrogel until the content of alkali metal ions is less than 0.1% by weight, based on the weight of solids, extraction of the water from the hydrogel until the water content is less than 5% by weight, based on the total content of liquid, and drying of the hydrogel to form a xerogel. According to the invention, the extraction step comprises at least one first extraction with a first organic solvent which is at least partially miscible with water down to a water content of 50% by weight, followed by at least one second extraction with a second organic solvent which is at least partially miscible with water.
    Type: Grant
    Filed: December 4, 2006
    Date of Patent: October 6, 2009
    Assignee: Basell Polyolefine GmbH
    Inventors: Christoph Kiener, Ingo Treffkorn, Guido Funk
  • Publication number: 20090163357
    Abstract: An oxidation catalyst system is formed by particles of an oxidation catalyst dispersed in a porous sol-gel binder. The oxidation catalyst system can be applied by brush or spray painting while the sol-gel binder is in its sol state.
    Type: Application
    Filed: February 12, 2009
    Publication date: June 25, 2009
    Applicant: USA as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Anthony N. Watkins, Bradley D. Leighty, Donald M. Oglesby, JoAnne L. Patry, Jacqueline L. Schryer
  • Patent number: 7473666
    Abstract: A particulate porous ammoxidation catalyst for use in producing acrylonitrile or methacrylonitrile by reacting propylene, isobutene or tert-butyl alcohol with molecular oxygen and ammonia in a fluidized-bed reactor, the catalyst comprising a metal oxide and a silica carrier having supported thereon the metal oxide, wherein the metal oxide contains at least two elements selected from the group consisting of molybdenum, bismuth, iron, vanadium, antimony, tellurium and niobium, and the catalyst having a particle diameter distribution wherein the amount of catalyst particles having a particle diameter of from 5 to 200 ?m is from 90 to 100% by weight, based on the weight of the catalyst, and having a pore distribution wherein the cumulative pore volume of pores having a pore diameter of 80 ? or less is not more than 20%, based on the total pore volume of the catalyst and wherein the cumulative pore volume of pores having a pore diameter of 1,000 ? or more is not more than 20%, based on the total pore volume of the
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: January 6, 2009
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Hiroyuki Yanagi, Hideo Midorikawa, Tutomu Ueda
  • Patent number: 7427579
    Abstract: The present invention relates to a hydrogenation catalyst represented by the following formula 1, a method for the preparation thereof, and a method for preparing gamma-butyrolactone using this catalyst. The method for preparing gamma-butyrolactone from maleic anhydride using the catalyst of the invention prepared by stabilizing the precursor particles of copper oxide, zinc oxide, and manganese oxide with a silica exhibits high selectivity, high yield, and high productivity under the operation conditions of a low molar ratio of hydrogen with regard to the reactants, and enables the preparation of gamma-butyrolactone from maleic anhydride with long-term stability without requiring frequent re-activation of the catalyst: Formula (I) CuO(a)ZnO(b)MnO2(c)SiO2(d) wherein a, b, c, and d are represented on the basis of weight, wherein a is 20 to 90, b is 0.01 to 10, c is 0.01 to 5, and d is 5 to 50.
    Type: Grant
    Filed: April 18, 2003
    Date of Patent: September 23, 2008
    Assignees: Ackyung Petrochemical Co., Ltd., Korea Research Institute of Chemical Technology
    Inventors: Jung-Ho Lee, Hyung-Rok Kim, Yo-Han Han, Suk-Jong Jeong, Nak-Mo Choi, Hang-Soo Woo, In-Ki Kim
  • Patent number: 7354981
    Abstract: The present invention discloses a polyethylene catalyst and a process for preparing the same, said catalyst being composed of a main component of catalyst and a cocatalyst, wherein the main component of catalyst is prepared by reacting: (1) a magnesium-alcohol complex, (2) an alkyl aluminum compound having a formula R3nAlCl3-n supported on silica, and (3) a titanium compound having a formula Ti(OR2)mCl4-m, and the cocatalyst is an organic aluminum compound. The catalyst of the present invention has advantages including high polymerization activity, less difference between the polymerization activities at low hydrogen level condition and at high hydrogen level condition, stable polymerization reaction, good particle morphology of catalyst, and less fine powder of polymer product.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: April 8, 2008
    Assignees: China Petroleum & Chemical Corporation, Shanghai Research Institute of Chemical Industry
    Inventors: Mingwei Xiao, Shijiong Yu, Xiaofeng Ye
  • Patent number: 7341973
    Abstract: The present invention relates to solid base catalysts consisting of an amorphous material obtained from a silica or alumina gel containing an alkaline, earth-alkaline or transition metal (M), characterized by a molar ratio between metal (M) and Si or Al ranging from 30:1 to 0.0001:1, a surface area ranging from 100 to 600 m2/g, an overall pore volume ranging from 0.1 to 1.1 ml/g, an average channel diameter ranging from 30 to 150 ? and a density of the base sites ranging from 10 to 900 ?mol/g. Said catalysts can be conveniently used in base catalysis reactions.
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: March 11, 2008
    Assignees: Polimeri Europa S.p.A., Enitecnologie S.p.A.
    Inventors: Cristina Flego, Mauro Palazzina, Ugo Romano
  • Patent number: 7326757
    Abstract: Disclosed are catalyst systems and methods of making the catalyst systems for the polymerization of an olefin containing a solid titanium catalyst component containing an inorganic titanium compound, a magnesium alcohol adduct made from an inorganic magnesium compound and an alcohol, and a porous support having at least one of a certain specific surface area, a certain pore volume, and a certain median particle size. The catalyst system may further contain an organoaluminum compound and optionally an organosilicon compound. Also disclosed are methods of making polyolefins.
    Type: Grant
    Filed: July 20, 2005
    Date of Patent: February 5, 2008
    Assignee: BASF Catalysts LLC
    Inventors: Zhidong Zhu, Main Chang
  • Publication number: 20070249493
    Abstract: A novel porous honeycomb structure highly functionalized as compared with the conventional example, manufacturing method thereof and an air cleaner using the structure are provided. The functionalized porous honeycomb structure is a silica gel form, and fine powder for adding the function is dispersed in the form. Further the method of manufacturing in accordance with the present invention includes the steps of (a) preparing silica sol by mixing ion exchange resin in sodium silicate aqueous solution; (b) removing said ion exchange resin and adjusting pH; (c) dispersing fine powder for adding a function to the silica sol; (d) gelating the silica sol to provide silica wet gel; and (e) freezing the silica wet gel.
    Type: Application
    Filed: October 31, 2006
    Publication date: October 25, 2007
    Applicants: SHARP KABUSHIKI KAISHA, Hajime TAMON, Shin MUKAI
    Inventors: Tomohisa Kawata, Jun Kudo, Hajime Tamon, Shin Mukai
  • Patent number: 7265242
    Abstract: A process for the carbonylation of unsaturated compounds by contacting the unsaturated compound with carbon monoxide in the presence of a catalyst system comprising: (a) a source of palladium and/or platinum; and (b) an unsymmetrical bidentate diphosphine ligand of formula I, R1R2>P1?R3?P2<R4R5??(I) wherein P1 and P2 represent phosphorus atoms; R3 represents a divalent organic bridging group; and R1, R2, R4 and R5 each individually, or R1 and R2 jointly, and/or R4 and R5 jointly represent organic groups that are covalently linked to the phosphorus; and wherein R1, R2, R4 and R5 are chosen in such way, that the phosphino group R1R2>P1 differs from the phosphino group P2<R4R5.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: September 4, 2007
    Assignee: Shell Oil Company
    Inventors: Eit Drent, Willem Wabe Jager, Robert Ian Pugh
  • Patent number: 7211539
    Abstract: The invention relates to Group 1 metal/silica gel compositions comprising silica gel and an alkali metal or an alkali metal alloy. The compositions of the inventions are described as Stage 0, I, II, and III materials. These materials differ in their preparation and chemical reactivity. Each successive stage may be prepared directly using the methods described below or from an earlier stage material. Stage 0 materials may, for example, be prepared using liquid alloys of Na and K which are rapidly absorbed by silica gel (porous SiO2) under isothermal conditions, preferably at or just above room temperature, to form loose black powders that retain much of the reducing ability of the parent metals. When the low melting Group 1 metals are absorbed into the silica gel, a mild exothermic reaction produces Stage I material, loose black powders that are indefinitely stable in dry air. Subsequent heating to 400° C. produces Stage II materials, which are also loose black powders. Further heating above 400° C.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: May 1, 2007
    Assignees: SIGNa Chemistry, LLC, Board of Trustees of Michigan State University
    Inventors: Michael Lefenfeld, James L. Dye
  • Patent number: 7148179
    Abstract: A catalyst support is produced by mixing particulate synthetic silica with 0.5–10 parts by weight of one or more particulate oxides or phosphates of the elements of group IIA, IIIB, IVB, VA, VIB, VIIB, VIII, IB, IIB, IIIA, IVA and lanthanides or precursors thereof, shaping the mixture and then calcining the shaped mixture to form the finished support. The formed support has improved stability relative to aging resistance under hydrothermal conditions. The catalyst support is used together with phosphoric acid in the production of alcohols from olefins by hydration. The resultant hydration catalysts have excellent activity and selectivity.
    Type: Grant
    Filed: May 9, 2005
    Date of Patent: December 12, 2006
    Assignee: Degussa AG
    Inventors: Hermanus Gerhardus Jozef Lansink Rotgerink, Heike Reidemann, Helmfried Krause
  • Patent number: 7135429
    Abstract: The present invention is directed to an attrition resistant carrier product such as silica. Further, this invention is directed to the use of a binder to improve the attrition resistance or reduce the friability of a carrier product such as silica. In an embodiment, the median particle size is from 125 to 300 microns. Selection of the binder is such that the presence and/or addition of the binder does not result in substantial modification of the physical properties of the silica. Suitable binders include Group I and Group II silicates, Group I and Group II aluminates, and mixtures thereof, as identified by the Period Table of Elements.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: November 14, 2006
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Narayan K. Raman, Thomas G. Krivak, Robert C. Dilmore, Paul A. Beauregard
  • Patent number: 7045106
    Abstract: A process for producing an inorganic porous material, comprising the steps of preparing an aqueous medium solution containing water-glass as a silica source, a water-soluble polymer and an acid, causing phase separation and gelation in the solution at the same time to form a wet gel, and washing and drying the gel. According to the present invention, use of water-glass which is easily acquired as a silica source makes it possible to produce porous silica having mutually continuous through holes with macro-pores. According to the present invention, the diameter of each macro-pore can be controlled to a desired value.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: May 16, 2006
    Assignee: Tokuyama Corporation
    Inventors: Ryoji Takahashi, Satoshi Sato, Akiyuki Yachi
  • Patent number: 6989345
    Abstract: A catalyst support is produce by mixing particulate synthetic silica with 0.5–10 parts by weight of one or more particulate oxides or phosphates of the elements of group IIA, IIIB, IVB, VA, VIB, VIIB, VIII, IB, IIB, IIIA, IVA and lanthanides or precursors thereof, shaping the mixture and then calcining the shaped mixture to form the finished support. The formed support has improved stability relative to aging resistance under hydrothermal conditions. The catalyst support is used together with phosphoric acid in the production of alcohols from olefins by hydration. The resultant hydration catalysts have excellent activity and selectivity.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: January 24, 2006
    Assignee: Degussa AG
    Inventors: Hermanus Gerhardus Jozef Lansink Rotgerink, Heike Reidemann, Helmfried Krause
  • Patent number: 6958137
    Abstract: The present invention relates to a method for preparing a composite silica membrane with thermal stability by a soaking-rolling method, and more particularly to a method for preparing a composite silica membrane with improved thermal stability by rolling the surface of a porous support with silica xerogel, soaking-rolling the surface with ?-alumina, coating, drying, and sintering the porous support surface, thereby forming a fine coating membrane on the porous support surface.
    Type: Grant
    Filed: October 3, 2003
    Date of Patent: October 25, 2005
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Kew-Ho Lee, Dong-Wook Lee, Yoon-Kyu Lee, Bong-Kuk Sea, Seung-Eun Nam
  • Patent number: 6956006
    Abstract: The invention relates to a composite material comprising silicon and titanium dioxide characterized by an enhanced thermal and hydrothermal stability of the pore structure. The composite is obtainable by precipitating titanium hydroxide from an aqueous solution containing sulfate salts and urea, followed by an hydrothermal treatment in the mother liquor, and by reacting the precipitate with a basic silica sol. The composite has a specific surface area of up to 228 m2/g for a material calcined at 800° C. for 3 hours, and is suitable for catalyzing a variety of reactions, including Claus reaction and degradation of organic impurities.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: October 18, 2005
    Assignee: Rotem Amfert Negev Ltd.
    Inventors: Yaacov W. Mirsky, Marina N Gorlova
  • Patent number: 6897181
    Abstract: The invention relates to a process for preparing a catalyst for the polymerization of olefins, which comprises: a) preparation of a finely divided silica xerogel, b) loading of the xerogel with chromium from a solution of chromium trioxide or a chromium compound which is converted into chromium trioxide under the conditions of step c), and c) activation of the resulting product at from 400 to 1100° C. in a water-free gas stream comprising oxygen in a concentration of above 10% by volume, wherein a fluoride doping with a fluorinating agent is carried out in step b) or in step c). Furthermore, the invention relates to a catalyst for the polymerization of olefins which is obtainable by the process of the invention and to a process for the polymerization of olefins in which an olefin or an olefin mixture is polymerized in the presence of a catalyst according to the invention.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: May 24, 2005
    Assignee: Basell Polyolefine GmbH
    Inventors: Shahram Mihan, Martin Lux, Wolfgang Rohde, Andreas Deckers, Peter Kölle, Heinz Vogt
  • Patent number: 6787497
    Abstract: The invention concerns a catalyst carrier comprising a fibre paper impregnated with a slurry comprising silica sol, micro fibres and a filler, wherein said micro fibres have an equivalent average particle size, measured with sedigraph method, from about 200 nm to about 30000 nm and said filler has an average equivalent particle size, measured with sedigraph method, from about 300 to about 10000 nm. The invention further concerns a method of its preparation, a slurry useful therefore, a catalyst comprising such a catalyst carrier and use of the catalyst.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: September 7, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Anna-Carin Dellve, Bozena Tokarz, Mats Nyström
  • Patent number: 6670302
    Abstract: High melt index polyolefins have been obtained with chromium silica catalysts under conventional polymerization conditions without the use of titanium or other additives. The useful chromium silica catalysts have a pore volume in the range of 1.9-2.9 cc/g and a narrow pore size distribution. The silica is a silica gel preferably obtained from a low solids, rapid gelation process.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: December 30, 2003
    Assignee: W. R. Grace & Co.-Conn
    Inventors: Rimantas Glemza, Dean A. Denton
  • Publication number: 20030162917
    Abstract: A chromium containing catalyst wherein the chromium atom is in one of its higher valence states and is immobilized to a support-agglomerate composed of at least one inorganic oxide component and at least one ion-containing layered component.
    Type: Application
    Filed: April 10, 2002
    Publication date: August 28, 2003
    Inventors: Keng-Yu Shih, Dean Alexander Denton, Rimantas Glemza
  • Publication number: 20030091493
    Abstract: It is described a process based on sol-gel chemistry suitable to the production of nanocomposite materials being photoluminescent at ambient temperature, comprising silicon grains of dimension of nanometers embedded in a silica matrix.
    Type: Application
    Filed: November 5, 2001
    Publication date: May 15, 2003
    Inventors: Lorenzo Costa, Pier Paolo Costa, Fulvio Costa
  • Patent number: RE40140
    Abstract: The invention relates to a process for preparing a catalyst for the polymerization of olefins, which comprises: a) preparation of a finely divided silica xerogel, b) loading of the xerogel with chromium from a solution of chromium trioxide or a chromium compound which is converted into chromium trioxide under the conditions of step c), and c) activation of the resulting product at from 400 to 1100° C. in a water-free gas stream comprising oxygen in a concentration of above 10% by volume, wherein a fluoride doping with a fluorinating agent is carried out in step b) or in step c). Furthermore, the invention relates to a catalyst for the polymerization of olefins which is obtainable by the process of the invention and to a process for the polymerization of olefins in which an olefin or an olefin mixture is polymerized in the presence of a catalyst according to the invention.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: March 4, 2008
    Assignee: Basell Polyolefine GmbH
    Inventors: Shahram Mihan, Martin Lux, Wolfgang Rohde, Andreas Deckers, Peter Kölle, Heinz Vogt
  • Patent number: RE44693
    Abstract: Novel compositions comprised of at least one bead conjugated to a solid support and further conjugated to at least one nucleic acid and preferred methods for making the novel compositions are described. As compared to “flat” surfaces, beads linked to a solid support provide an increased surface area for immobilization of nucleic acids. Furthermore, by selecting a bead with the desired functionality, a practitioner can select a functionalization chemistry for immobilizing nucleic acids, which is different from the chemistry of the solid support.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: January 7, 2014
    Assignee: Sequenom, Inc.
    Inventors: Hubert Köster, David M. Lough