In Form Of A Membrane Patents (Class 502/4)
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Patent number: 8772564Abstract: This invention relates to a method wherein a high-purity paraxylene can be produced efficiently by using a catalyst having a molecular sieving action (or shape selectivity) and being excellent in the catalytic activity without isomerization and adsorption-separation steps. More particularly, it relates to a method of producing a high-purity paraxylene, characterized in that MFI type zeolite having a primary particle size of not more than 100 ?m, a structure defining agent and silica material having an average particle size of not less than 10 nm but less than 1.0 ?m are used as a starting material, and a synthetic zeolite catalyst produced by subjecting the MFI type zeolite to a coating treatment with an aqueous solution obtained by mixing so as to satisfy X×Y<0.05 (wherein X is a concentration of the silica material (mol %) and Y is a concentration of the structure defining agent (mol %)) is used in the alkylation or disproportionation of at least one of benzene and toluene as a starting material.Type: GrantFiled: September 29, 2009Date of Patent: July 8, 2014Assignee: JX Nippon Oil & Energy CorporationInventors: Koichi Matsushita, Chikanori Nakaoka, Norikazu Nishiyama
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Patent number: 8765628Abstract: Exemplary embodiments of the present invention relate to the processing of hydrocarbon-containing feedstreams in the presence of an active catalyst component comprising a surface, and a metal oxide film coated on the surface of the active catalyst component. The catalysts and processes of the present invention can improve overall hydrogenation, product conversion, as well as improved resistance to catalytic deactivation due to sulfur and nitrogen compounds present in the hydrocarbon feedstreams.Type: GrantFiled: November 9, 2010Date of Patent: July 1, 2014Assignee: ExxonMobil Research and Engineering CompanyInventors: Chuansheng Bai, Adrienne J. Thornburg, Heather A. Elsen, William G. Borghard, Cody R. Cole
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Patent number: 8753425Abstract: A method of preparing a supported gas separation membrane, comprising: preparing crystalline seeds from a synthesis mixture comprising an aluminum source, a phosphorous source, a silicon source, at least one organic templating agent and water; applying the seeds to a porous support to produce a seeded porous support; contacting the seeded porous support with a synthesis gel under hydrothermal synthesis conditions to produce a coated porous support; and calcining the coated porous support is described. A supported gas separation membrane made by this method is also described.Type: GrantFiled: May 27, 2010Date of Patent: June 17, 2014Assignee: Shell Oil CompanyInventors: Brendan Dermot Murray, Paul Jason Williams
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Patent number: 8747766Abstract: A hydrogen separation membrane comprising a palladium alloy that includes at least palladium, an added metal A, and an added metal B, the added metal A and the added metal B being two different metals other than palladium, each of the added metal A and the added metal B forming a complete solid solution with palladium, and the added metal A and the added metal B having a triple point in an equilibrium diagram and not forming an intermetallic compound. The hydrogen separation membrane exhibits excellent hydrogen permeability and durability.Type: GrantFiled: November 20, 2009Date of Patent: June 10, 2014Assignee: NGK Insulators, Ltd.Inventor: Kenichi Noda
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Patent number: 8710173Abstract: The present invention discloses a new type of polyimide membrane with high permeances and high selectivities for gas separations and particularly for CO2/CH4 and H2/CH4 separations. The polyimide membranes have CO2 permeability of 50 Barrers or higher and single-gas selectivity for CO2/CH4 of 15 or higher at 50° C. under 791 kPa for CO2/CH4 separation. The polyimide membranes have UV cross-linkable functional groups and can be used for the preparation of UV cross-linked polyimide membranes having CO2 permeability of 20 Barrers or higher and single-gas selectivity for CO2/CH4 of 35 or higher at 50° C. under 791 kPa for CO2/CH4 separation.Type: GrantFiled: October 21, 2011Date of Patent: April 29, 2014Assignee: UOP LLCInventors: Chunqing Liu, Travis C. Bowen, Emily G. Harbert, Raisa Minkov, Syed A. Faheem, Zara Osman
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Patent number: 8685143Abstract: A method of making a supported gas separation molecular sieve membrane. In this method a porous support, which is preferably pretreated, is contacted with a molecular sieve synthesis mixture under hydrothermal synthesis conditions. The contacting step is conducted for a shortened crystallization time period. The resulting coated porous support is calcined to yield the supported gas separation molecular sieve membrane having particularly good gas separation characteristics.Type: GrantFiled: May 15, 2009Date of Patent: April 1, 2014Assignees: Shell Oil Company, The Regents of the University of Colorado, a Body CorporateInventors: Moises Abraham Carreon, Zaida Diaz, John Lucien Falconer, Hans Heinrich Funke, Shiguang Li, Brendan Dermot Murray, Richard Daniel Noble, Paul Jason Williams
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Patent number: 8679227Abstract: The present invention provides methods for making improved zeolite and crystalline silicoaluminophosphate (SAPO) membranes, in particular SAPO-34 membranes, on a porous support through improved removal of the organic structure-directing templating agent. A calcining step is performed in an oxygen free atmosphere, such as under a vacuum or inert gas, to remove the organic templating agent. By removing the templating agent in the absence of oxygen, the calcination step can remove a greater amount of the templating agent than comparable template removal steps conducted in the presence of oxygen and the calcination step can be conducted at significantly lower temperatures. The membranes of the present invention provide increased permeance while maintaining comparable selectivity for gas separations, particularly carbon dioxide (CO2) and methane (CH4) separations and separations at high temperatures.Type: GrantFiled: April 28, 2011Date of Patent: March 25, 2014Assignee: The Regents of the University of ColoradoInventors: John L. Falconer, Richard D. Noble, Begum Tokay, Yanfeng Zhang
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Patent number: 8673057Abstract: DDR nanocrystals of uniform size and structure were synthesized using hydrothermal secondary growth and then used to make DDR zeolite membranes and for any other use where uniform, small DDR zeolite crystals are beneficial.Type: GrantFiled: September 12, 2012Date of Patent: March 18, 2014Assignee: Georgia Tech Research CorporationInventors: Zhengzhi Zhou, Sankar Nair
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Patent number: 8647997Abstract: A free-standing zeolite membrane and a zeolite membrane supported on a support structure are disclosed. The free-standing zeolite membrane is fabricated by mixing zeolite particles and an optional inorganic binder, forming a green body, and sintering the green body at a sufficiently low temperature so as to prevent damage to the gas selectivity properties of the zeolite particles. The supported composite zeolite membrane is fabricated by mixing a sacrificial binder, an optional inorganic binder, boehmite sol and zeolite particles to form a slurry. The slurry is then coated onto a porous support structure, dried and sintered at a sufficiently low temperature so as to prevent damage to the gas selective properties of the zeolite particles. In both membranes, the zeolite particles span the entire thickness of the membrane to provide a high selectivity path for the flow of gas to pass therethrough.Type: GrantFiled: November 30, 2010Date of Patent: February 11, 2014Assignee: General Electric CompanyInventors: Kevin Paul McEvoy, Hrishikesh Keshavan, Anthony Yu-Chung Ku, Steven Mitchell Kuznicki, Weizhu An, Lan Wu, Paul Donald Swenson
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Patent number: 8637424Abstract: Exemplary embodiments of the present invention relate to the processing of hydrocarbon-containing feedstreams in the presence of an interstitial metal hydride comprising a surface, with a metal oxide integrally synthesized and providing a coating on the surface of the interstitial metal hydride. The catalysts and processes of the present invention can improve overall hydrogenation, product conversion, as well as sulfur and nitrogen reduction in hydrocarbon feedstreams.Type: GrantFiled: November 9, 2010Date of Patent: January 28, 2014Assignee: ExxonMobil Research and Engineering CompanyInventor: Heather A. Elsen
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Patent number: 8637416Abstract: There is provided a zeolite membrane which is thinner than a conventional membrane and which has improved permeability and a method for manufacturing the zeolite membrane. The method includes a surface layer forming step for forming a surface layer by attaching a low polar polymer on a first surface of a porous substrate to cover the surface, a filling step for filling a masking polymer into pores in the porous substrate from a surface different from the first surface of the porous substrate up to the surface layer by impregnating the porous substrate with the masking polymer and solidifying the masking polymer, and a surface layer removing step for removing the surface layer. After the surface layer removing step, a zeolite membrane is formed on the first surface of the porous substrate.Type: GrantFiled: December 13, 2010Date of Patent: January 28, 2014Assignees: NGK Insulators, Ltd., Nagaoka University of TechnologyInventors: Shuji Himeno, Teruaki Takeuchi, Shuichi Yoshida, Kiyoshi Araki, Toshihiro Tomita
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Patent number: 8614288Abstract: The present invention discloses a new type of polyimide membrane with high permeances and high selectivities for gas separations and particularly for CO2/CH4 and H2/CH4 separations. The polyimide membranes have CO2 permeability of 50 Barrers or higher and single-gas selectivity for CO2/CH4 of 15 or higher at 50° C. under 791 kPa for CO2/CH4 separation. The polyimide membranes have UV cross-linkable functional groups and can be used for the preparation of UV cross-linked polyimide membranes having CO2 permeability of 20 Barrers or higher and single-gas selectivity for CO2/CH4 of 35 or higher at 50° C. under 791 kPa for CO2/CH4 separation.Type: GrantFiled: October 21, 2011Date of Patent: December 24, 2013Assignee: UOP LLCInventors: Chunqing Liu, Travis C. Bowen, Emily G. Harbert, Raisa Minkov, Syed A. Faheem, Zara Osman
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Patent number: 8574344Abstract: The present invention relates to template-free clathrasils whose framework comprises essentially SiO2, wherein the crystals of the clathrasils have the platelet-like morphology of a sheet silicate. The present invention further relates to a process for preparing these template-free clathrasils and also to their use as absorbent, as seed crystals for the synthesis of clathrasil membranes of the same zeolite type and in the form of dense layers which function as gas separation membranes having a molecular sieving action.Type: GrantFiled: September 28, 2009Date of Patent: November 5, 2013Assignee: BASF SEInventors: Hartwig Voβ, Jörg Therre, Hermann Gies, Bernd Marler
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Publication number: 20130274087Abstract: MOF (metal organic framework)-modified materials and methods of making and methods of using same. The MOFs are covalently bound to the materials. Examples of suitable materials include fibers and thin films. The MOF-modified materials can be made by forming MOFs in situ such that they are covalently bound to the materials. The MOF-modified materials can be used in methods where gases and/or toxic chemicals are absorbed.Type: ApplicationFiled: August 25, 2011Publication date: October 17, 2013Applicant: CORNELL UNIVERSITYInventors: Marcia da Silva Pinto, Cesar Augusto Sierra Avilla, Juan Paulo Hinestroza
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Patent number: 8540800Abstract: The present invention discloses microporous UZM-5 zeolite membranes, methods for making the same, and methods of separating gases, vapors, and liquids using the same. The small-pore microporous UZM-5 zeolite membrane is prepared by two different methods, including in-situ crystallization of one or more layers of UZM-5 zeolite crystals on a porous membrane support, and a seeding method by in-situ crystallization of a continuous second layer of UZM-5 zeolite crystals on a seed layer of UZM-5 zeolite crystals supported on a porous membrane support. The membranes in the form of disks, tubes, or hollow fibers have superior thermal and chemical stability, good erosion resistance, high CO2 plasticization resistance, and significantly improved selectivity over polymer membranes for gas, vapor, and liquid separations.Type: GrantFiled: March 21, 2011Date of Patent: September 24, 2013Assignee: UOP LLCInventors: Chunqing Liu, Jaime G. Moscoso, Stephen T. Wilson
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Publication number: 20130244861Abstract: A composite catalytic membrane applied to catalytic esterification and preparation method thereof are provided. The composite catalytic membrane is porous, and includes nonwoven fabric as base membrane and catalytic coating which is formed on the surface of nonwoven fabric and in the pores and gaps between the nonwoven fabric fibers. The catalytic coating uses solid acid as catalyst and polymer or modified sulfonated polymer as membrane-forming material. The membrane is formed by coating or immersion method, and the composite catalytic membrane is obtained by cross-linking after forming. The greenization and high efficiency of catalytic esterification and preparation of biodiesel can be achieved owing to the microporous structure and huge specific surface area of the composite catalytic membrane. The composite catalytic membrane has high mechanical strength, good reproducibility and stability and easily enables continuous repetitive production of catalytic esterification.Type: ApplicationFiled: March 4, 2011Publication date: September 19, 2013Applicant: TIANJIN POLYTECHNIC UNIVERSITYInventors: Jianxin Li, Benqiao He, Wenying Shi, Yu Cheng
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Patent number: 8518845Abstract: A nanoporous catalytic membrane which displays several unique features Including pores which can go through the entire thickness of the membrane. The membrane has a higher catalytic and product selectivity than conventional catalysts. Anodic aluminum oxide (AAO) membranes serve as the catalyst substrate. This substrate is then subjected to Atomic Layer Deposition (ALD), which allows the controlled narrowing of the pores from 40 nm to 10 nm in the substrate by deposition of a preparatory material. Subsequent deposition of a catalytic layer on the inner surfaces of the pores reduces pore sizes to less than 10 nm and allows for a higher degree of reaction selectivity. The small pore sizes allow control over which molecules enter the pores, and the flow-through feature can allow for partial oxidation of reactant species as opposed to complete oxidation. A nanoporous separation membrane, produced by ALD is also provided for use in gaseous and liquid separations.Type: GrantFiled: November 2, 2009Date of Patent: August 27, 2013Assignee: UChicago Argonne, LLCInventors: Michael J. Pellin, John N. Hryn, Jeffrey W. Elam
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Patent number: 8511483Abstract: A method of making a porous membrane is disclosed. One such method optionally includes: forming a plurality of pillars in an array form over a substrate; and forming a layer with a mixture of a porous material precursor and a surfactant over the substrate. The method optionally includes removing the pillars to leave cavities in the layer; filling the cavities in the layer with a cavity filler; and removing the surfactant from the layer. The porous membrane can be used as, for example, a sieve for separating molecules from a chemical reaction.Type: GrantFiled: November 8, 2011Date of Patent: August 20, 2013Assignee: Korea University Research and Business FoundationInventor: Kwangyeol Lee
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Publication number: 20130206002Abstract: A separation membrane including an alloy wherein the alloy includes at least one Group 5 element and at least one Group 14 element, wherein the at least one Group 5 element and the at least one Group 14 element of the alloy define a body centered cubic structure.Type: ApplicationFiled: February 15, 2013Publication date: August 15, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: SAMSUNG ELECTRONICS CO., LTD.
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Patent number: 8497223Abstract: A process for production of a DDR-type zeolite membrane, which comprises: both a seed crystal-forming step of immersing a porous substrate in a seed crystal-forming raw material solution which contains a DDR-type zeolite powder dispersed therein and performing hydrothermal synthesis to form plural DDR-type zeolite crystal particles on surface of the porous substrate, and a membrane-forming step of immersing the resulting porous substrate with DDR-type zeolite crystal particles on the surface in a membrane-forming raw material solution which is free from DDR-type zeolite powder and performing hydrothermal synthesis to form a DDR-type zeolite membrane on the surface of the porous substrate. According to the process, a dense DDR-type zeolite membrane can be formed, and the vessel used in the synthesis can be prevented from being damaged.Type: GrantFiled: August 22, 2011Date of Patent: July 30, 2013Assignee: NGK Insulators, Ltd.Inventors: Makiko Niino, Kenji Yajima
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Publication number: 20130184144Abstract: In one aspect, a method of making non-covalently bonded carbon-titania nanocomposite thin films includes: forming a carbon-based ink; forming a titania (TiO2) solution; blade-coating a mechanical mixture of the carbon-based ink and the titania solution onto a substrate; and annealing the blade-coated substrate at a first temperature for a first period of time to obtain the carbon-based titania nanocomposite thin films. In certain embodiments, the carbon-based titania nanocomposite thin films may include solvent-exfoliated graphene titania (SEG-TiO2) nanocomposite thin films, or single walled carbon nanotube titania (SWCNT-TiO2) nanocomposite thin films.Type: ApplicationFiled: January 18, 2013Publication date: July 18, 2013Applicant: NORTHWESTERN UNIVERSITYInventor: Northwestern University
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Publication number: 20130184145Abstract: The present invention provides a porous material which has continuous pores and comprises a polymethyl methacrylate as a main component, wherein the continuous pores have a diameter of 0.001 ?m to 500 ?m and at least one surface of the porous material has a porosity of 10% to 80%; a separation membrane composed of the same; an adsorbent composed of the same; and a method production of the same. A porous material whose surface porosity and pore diameter are each controlled in a specific range can be obtained. The porous material has a fine and uniform porous structure in which the pore diameter can be controlled in the order of nanometers to micrometers; therefore, it can be advantageously used as a separation membrane such as a blood component separation membrane of an artificial kidney or the like or as an adsorbent.Type: ApplicationFiled: September 22, 2011Publication date: July 18, 2013Applicant: Toray Industries, Inc.Inventors: Hiroshi Takahashi, Sadayuki Kobayashi
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Tetratopic phenyl compounds, related metal-organic framework materials and post-assembly elaboration
Patent number: 8470075Abstract: Disclosed are tetratopic carboxylic acid phenyl for use in metal-organic framework compounds. These compounds are useful in catalysis, gas storage, sensing, biological imaging, drug delivery and gas adsorption separation.Type: GrantFiled: September 10, 2012Date of Patent: June 25, 2013Assignee: Northwestern UniversityInventors: Omar K. Farha, Joseph T. Hupp -
Publication number: 20130143728Abstract: A crosslinked superabsorbent polymer can be formed on a nonwoven or woven substrate by a method comprising: a) providing an aqueous composition having a pH >7, e.g. ?pH 8, comprising a dispersion of a sodium or potassium salt of a hydrophilic organic polymer comprising carboxyl functionality and having a weight average molecular weight of at least 200,000 (according to ASTM D4001-93(2006)), a base having a boiling point no greater than the boiling point of water, and a water soluble crosslinking agent capable of crosslinking the polymer in the absence of the base; b) providing a nonwoven or woven substrate; c) coating said nonwoven or woven substrate with said aqueous composition; d) heating the coated substrate to a temperature above the boiling point of water to volatilize the base, initiate crosslinking of the polymer, and remove the water, so as to form the crosslinked superabsorbent polymer on the nonwoven or woven substrate.Type: ApplicationFiled: January 26, 2011Publication date: June 6, 2013Applicant: H&R CHEMPHARM (UK) LTD.Inventors: Christopher Mark Lyons, Gavin Leslie Morland
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Patent number: 8455382Abstract: Process for fabricating a catalyzed ion transport membrane (ITM). In one embodiment, an uncatalyzed ITM is (a) contacted with a non-reducing gaseous stream while heating to a temperature and for a time period sufficient to provide an ITM possessing anion mobility; (b) contacted with a reducing gaseous stream for a time period sufficient to provide an ITM having anion mobility and essentially constant oxygen stoichiometry; (c) cooled while contacting the ITM with the reducing gaseous stream to provide an ITM having essentially constant oxygen stoichiometry and no anion mobility; and (d) treated by applying catalyst to at least one of (1) a porous mixed conducting multicomponent metallic oxide (MCMO) layer contiguous with a first side of a dense layer of MCMO and (2) a second side of the dense MCMO layer. In another embodiment, these steps are carried out in the alternative order of (a), (d), (b), and (c).Type: GrantFiled: May 25, 2010Date of Patent: June 4, 2013Assignee: Air Products and Chemicals, Inc.Inventors: Michael Francis Carolan, Charles Leonard Kibby
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Patent number: 8435327Abstract: A carbon dioxide permeable membrane is described. In some embodiments, the membrane includes a body having a first side and an opposite second side; a plurality of first regions formed from a molten carbonate having a temperature of about 400 degrees Celsius to about 1200 degrees Celsius, the plurality of first regions forming a portion of the body and the plurality of first regions extending from the first side of the body to the second side of the body; a plurality of second regions formed from an oxygen conductive solid oxide, the plurality of second regions combining with the plurality of first regions to form the body and the plurality of second regions extending from the first side of the body to the second side of the body; and the body is configured to allow carbon dioxide to pass from the first side to the second side.Type: GrantFiled: April 23, 2012Date of Patent: May 7, 2013Assignee: The Trustees of Columbia University in the City of New YorkInventors: Klaus S. Lackner, Alan C. West, Jennifer L. Wade
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Patent number: 8426333Abstract: A process of producing a structure for molecular separations includes providing a plurality of template materials. The template materials are selected from biomolecules, biopolymers, polymers, or combinations thereof. A sieve material, suitable for producing a structure for molecular separations, is provided around the template materials. The template materials are positioned in an arrangement for leaving pores suitable for molecular separations. The template materials are removed to leave pores in the sieve material and produce the structure suitable for molecular separations. The structure so produced can be used for molecular separation. In some embodiments, methods for molecular separation include situating in a feed stream an array of pores each approximating a double-stranded DNA molecule; flowing the feed stream into the pores; and allowing the pores to transport therethrough molecules within the feed stream, so as to separate the molecules from the feed stream.Type: GrantFiled: November 10, 2011Date of Patent: April 23, 2013Assignee: Cerahelix, Inc.Inventors: Karl D. Bishop, Tyler J. Kirkmann
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Patent number: 8415073Abstract: The present invention specifies the physical property valves of a catalytic layer correlating with the performance of a fuel cell, and provides the catalytic layer having the physical proper values and a fuel cell. Specifically, in a fuel cell having a membrane-electrode assembly provided with a catalytic layer 13 on each side of an electrolyte membrane 10, an electrode powder constituting the catalytic layer 13 shall have an amount of adsorbed water vapor in a range of 52 to 70 cm3(STP)/g by a value measured when the water-vapor partial pressure is 0.6, which is determined from the adsorption isotherm of water. The fuel cell having the catalytic layer with the use of the electrode powder having the amount of adsorbed water vapor in this range has the output performance of 0.6 A/cm2 or higher by current density at 0.6 V, in a less humidified condition and a more humidified condition.Type: GrantFiled: July 18, 2008Date of Patent: April 9, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Tetsuo Nagami, Sozaburo Ohashi, Yuichiro Sugiyama, Mikihiro Hori
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Publication number: 20130064747Abstract: DDR nanocrystals of uniform size and structure were synthesized using hydrothermal secondary growth and then used to make DDR zeolite membranes and for any other use where uniform, small DDR zeolite crystals are beneficial.Type: ApplicationFiled: September 12, 2012Publication date: March 14, 2013Applicant: Georgia Tech Research CorporationInventors: Zhengzhi Zhou, Sankar Nair
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Publication number: 20130058862Abstract: It is provided that the catalyst shows a high activity in an ammonia decomposition reaction and can efficiently decompose ammonia into hydrogen and nitrogen. The catalyst for decomposing ammonia of the present invention comprises at least one element (component (A)) selected from the elements of groups 6 to 10 of the long-form periodic table, and an oxide and/or complex oxide of at least one element (component (B)) selected from the elements of groups 2 to 5 and groups 12 to 15 of the long-form periodic table, wherein the calculated specific surface area (S2) of the component (A) is 20 m2/g or larger, and the ratio (S2/S1) of the calculated specific surface area (S2) of the component (A) to the specific surface area (S1) of the catalyst per se is 0.15 to 0.85.Type: ApplicationFiled: March 29, 2011Publication date: March 7, 2013Inventors: Junji Okamura, Toshitaka Horiuchi, Hideaki Tsuneki, Masanori Yoshimune, Masami Ichinose
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ONE-STEP SYNTHESIS OF MESOPOROUS PENTASIL ZEOLITE WITH SINGLE-UNIT-CELL LAMELLAR STRUCTURAL FEATURES
Publication number: 20130059722Abstract: A method for making a pentasil zeolite material includes forming an aqueous solution that includes a structure directing agent and a silica precursor; and heating the solution at a sufficient temperature and for sufficient time to form a pentasil zeolite material from the silica precursor, wherein the structure directing agent includes a quaternary phosphonium ion.Type: ApplicationFiled: November 3, 2011Publication date: March 7, 2013Applicant: Regents of the University of MinneapolisInventors: Michael Tsapatsis, Xueyi Zhang -
Patent number: 8377838Abstract: A method is provided for producing a DDR type zeolite membrane, including a membrane formation step of immersing a porous substrate having a DDR type zeolite seed crystal adhered thereon, in a raw material solution containing 1-adamantaneamine, silica (SiO2) and water, and conducting a hydrothermal synthesis of DDR type zeolite to form a 1-adamantaneamine-containing DDR type zeolite membrane on the porous substrate to produce a precursor of DDR type zeolite membrane-containing body, and a burning step of heating the precursor at 400° C. or above and at 550° C. or below to burn and remove the 1-adamantaneamine contained in the DDR type zeolite membrane.Type: GrantFiled: December 3, 2009Date of Patent: February 19, 2013Assignee: NGK Insulators, Ltd.Inventors: Tetsuya Uchikawa, Kenji Yajima, Hisayoshi Nonaka, Toshihiro Tomita
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Publication number: 20130040227Abstract: A Pt—Ni catalyst is provided which demonstrates an unusually high oxygen reduction mass activity. In some embodiments, the Pt—Ni catalyst is a Pt—Ni binary alloy. In some embodiments, the catalyst may be characterized as having a Pt fcc lattice parameter of less than 3.71 Angstroms or 0.371 nm. In some embodiments the catalyst has a Pt fcc lattice parameter of between 3.69 Angstroms (or 0.369 nm) and 3.73 Angstroms (or 0.373 nm). In some embodiments, the catalyst may be characterized as having a composition of close to PtxNi(1-x), where x is between 0.2 and 0.4. In some embodiments the catalyst comprises nanostructured elements comprising microstructured support whiskers bearing a thin film of nanoscopic catalyst particles comprising a catalyst material described above. The catalyst may be particularly useful as a fuel cell catalyst and more specifically as a fuel cell cathode catalyst.Type: ApplicationFiled: April 26, 2011Publication date: February 14, 2013Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Mark K. Debe, George D. Vernstrom, Andrew J. L. Steinbach
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Publication number: 20130035225Abstract: A low cost, viable and modular method to prepare new, highly selective catalytic materials, especially “catalytic membranes”, is described. A method for the engineering and use of various types of reactors based on these catalytic membranes, even in a one-pot procedure, is also disclosed. The catalytic membranes are versatile, in terms of variety of chemical reactions promoted, and can be easily reused with negligible catalysts leaching. They are particularly useful, but not limited to, the asymmetric hydrogenation of substituted ?,? unsaturated acids or esters.Type: ApplicationFiled: March 31, 2010Publication date: February 7, 2013Applicant: NIPPON KODOSHI CORPORATIONInventors: Pierluigi Barbaro, Claudio Bianchini, Francesca Liguori, Haruo Sawa, Francesco Vizza
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Patent number: 8357228Abstract: A gas purification method of the present invention uses a carbon membrane having a molecular sieving action to purify at least one selected from the group consisting of a hydride gas, a hydrogen halide gas, and a halogen gas, each gas containing an impurity at 10 ppm or less. The present invention can be used for a recovery unit that recoveries a used gas to reuse it as an ultrapure semiconductor material gas, and a unit or equipment that produces or charges an ultrapure semiconductor material gas.Type: GrantFiled: October 9, 2008Date of Patent: January 22, 2013Assignee: Taiyo Nippon Sanso CorporationInventors: Yuzuru Miyazawa, Yoshihiko Kobayashi, Kenji Haraya, Miki Yoshimune
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Publication number: 20130005561Abstract: Composite membranes that are adapted for separation, purification, filtration, analysis, reaction and sensing. The composite membranes can include a porous support structure having elongate pore channels extending through the support structure. The composite membrane also includes an active layer comprising an active layer material, where the active layer material is completely disposed within the pore channels between the surfaces of the support structure. The active layer is intimately integrated within the support structure, thus enabling great robustness, reliability, resistance to mechanical stress and thermal cycling, and high selectivity. Methods for the fabrication of composite membranes are also provided.Type: ApplicationFiled: February 29, 2012Publication date: January 3, 2013Applicant: Synkera Technologies, Inc.Inventors: Dmitri Routkevitch, Oleg G. Polyakov
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Patent number: 8337588Abstract: Supported zeolite Y membranes exhibiting exceptionally high CO2 selectivities when used in CO2/N2 gas separations are produced by a seeding/secondary (hypothermal) growth approach in which a structure directing agent such as tetramethylammonium hydroxide is included in the aqueous crystal-growing composition used for membrane formation.Type: GrantFiled: April 12, 2010Date of Patent: December 25, 2012Assignee: The Ohio State University Research FoundationInventors: Krenar Shqau, Jeremy C. White, Prabir K. Dutta, Hendrik Verweij
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Publication number: 20120322646Abstract: The present invention discloses a new type of polyimide membrane with high permeances and high selectivities for gas separations and particularly for CO2/CH4 and H2/CH4 separations. The polyimide membranes have CO2 permeability of 50 Barrers or higher and single-gas selectivity for CO2/CH4 of 15 or higher at 50° C. under 791 kPa for CO2/CH4 separation. The polyimide membranes have UV cross-linkable functional groups and can be used for the preparation of UV cross-linked polyimide membranes having CO2 permeability of 20 Barrers or higher and single-gas selectivity for CO2/CH4 of 35 or higher at 50° C. under 791 kPa for CO2/CH4 separation.Type: ApplicationFiled: October 21, 2011Publication date: December 20, 2012Applicant: UOP LLCInventors: Chunqing Liu, Travis C. Bowen, Emily G. Harbert, Raisa Minkov, Syed A. Faheem, Zara Osman
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Patent number: 8298976Abstract: A pathogen-resistant fabric comprising one or more photocatalysts capable of generating singlet oxygen from ambient air. The pathogen-resistant fabric may optionally include one or more singlet oxygen traps.Type: GrantFiled: March 29, 2011Date of Patent: October 30, 2012Inventor: John L. Lombardi
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Publication number: 20120264589Abstract: The invention provides a tetrazole-containing polymer of intrinsic microporosity comprising (10) or more subunits, wherein one or more of the subunits comprise one or more tetrazolyl moieties. In one embodiment, a polymer of intrinsic microporosity (PIM-1) was modified using a “click chemistry” [2+3] cycloaddition reaction with sodium azide and zinc chloride to yield new PIMs containing tetrazole units. Polymers of the present invention are useful as high-performance materials for membrane-based gas separation, materials for ion exchange resins, materials for chelating resins, materials for superabsorbents, materials for ion conductive matrixes, materials for catalyst supports or materials for nanoparticle stabilizers.Type: ApplicationFiled: October 28, 2010Publication date: October 18, 2012Inventors: Naiying Du, Michael D. Guiver
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Patent number: 8279435Abstract: Metal-polyaniline (PANI) composites are provided together with a process of preparing such composites by an electrodeless process. The metal of the composite can have nanoscale structural features and the composites can be used in applications such as catalysis for hydrogenation reactions and for analytical detection methods employing SERS.Type: GrantFiled: November 16, 2009Date of Patent: October 2, 2012Assignee: Los Alamos National Security, LLCInventors: Hsing-Lin Wang, Wenguang Li, James A. Bailey, Yuan Gao
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Publication number: 20120240763Abstract: The present invention discloses microporous UZM-5 zeolite membranes, methods for making the same, and methods of separating gases, vapors, and liquids using the same. The small-pore microporous UZM-5 zeolite membrane is prepared by two different methods, including in-situ crystallization of one or more layers of UZM-5 zeolite crystals on a porous membrane support, and a seeding method by in-situ crystallization of a continuous second layer of UZM-5 zeolite crystals on a seed layer of UZM-5 zeolite crystals supported on a porous membrane support. The membranes in the form of disks, tubes, or hollow fibers have superior thermal and chemical stability, good erosion resistance, high CO2 plasticization resistance, and significantly improved selectivity over polymer membranes for gas, vapor, and liquid separations.Type: ApplicationFiled: March 21, 2011Publication date: September 27, 2012Applicant: UOP LLCInventors: Chunqing Liu, Jaime G. Moscoso, Stephen T. Wilson
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Patent number: 8273922Abstract: A process utilising the gases carbon monoxide, carbon dioxide and hydrogen to produce alcohols directly, comprises the steps of bringing a fluid mixture comprising carbon monoxide, carbon dioxide and hydrogen into contact with the surfaces of a supported tubular porous catalyst membrane having a range of pore sizes including micropores, mesopores and macropores, controlling the temperature of the said catalyst membrane, maintaining a pressure over said catalyst membrane of from 88 to 600 kPa, and recovering alcohol containing product formed by contact of the fluid mixture with said catalyst membrane.Type: GrantFiled: September 19, 2008Date of Patent: September 25, 2012Assignee: The Robert Gordon UniversityInventors: Edward Gobina, Reuben Mfon Umoh
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Patent number: 8262779Abstract: The present invention discloses microporous aluminophosphate (AlPO4) molecular sieve membranes and methods for making and using the same. The microporous AlPO4 molecular sieve membranes, particularly small pore microporous AlPO-14 and AlPO-18 molecular sieve membranes, are prepared by three different methods, including in-situ crystallization of a layer of AlPO4 molecular sieve crystals on a porous membrane support, coating a layer of polymer-bound AlPO4 molecular sieve crystals on a porous membrane support, and a seeding method by in-situ crystallization of a continuous second layer of AlPO4 molecular sieve crystals on a seed layer of AlPO4 molecular sieve crystals supported on a porous membrane support.Type: GrantFiled: August 16, 2010Date of Patent: September 11, 2012Assignee: UOP LLCInventors: Chunqing Liu, Stephen T. Wilson, David A. Lesch
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Patent number: 8263516Abstract: A method for manufacturing a DDR zeolite membrane element including the steps of: immersing a porous substrate in a raw material solution, forming a DDR zeolite membrane containing 1-adamanthanamine on a surface of the porous substrate by subjecting a DDR zeolite to hydrothermal synthesis in the presence of DDR zeolite seed crystals, applying a glass paste onto the surface of the porous substrate so as to contact the membrane, and heating the membrane at 500 to 800° C., thereby burning away the 1-adamanthanamine contained in the membrane and melting the glass paste to form a membrane-like glass seal contacting the membrane on the surface of the porous substrate. The method for manufacturing a DDR zeolite membrane element can inhibit the permeation of the DDR zeolite membrane from being hindered in a contact portion between the membrane and the glass seal and inhibit poor seal of the glass seal.Type: GrantFiled: July 29, 2010Date of Patent: September 11, 2012Assignee: NGK Insulators, Ltd.Inventors: Kenji Yajima, Hisayoshi Nonaka, Toshihiro Tomita
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Tetratopic phenyl compounds, related metal-organic framework materials and post-assembly elaboration
Patent number: 8262775Abstract: Disclosed are tetratopic carboxylic acid phenyl for use in metal-organic framework compounds. These compounds are useful in catalysis, gas storage, sensing, biological imaging, drug delivery and gas adsorption separation.Type: GrantFiled: October 13, 2009Date of Patent: September 11, 2012Assignee: Northwestern UniversityInventors: Omar K. Farha, Joseph T. Hupp -
Patent number: 8258069Abstract: The invention provides a process for production of a zeolite separation membrane having a porous support and a zeolite layer formed on the porous support, the process comprising: a seed crystal attaching step in which zeolite seed crystals are attached to the porous support; a layer forming step in which: the porous support to which the zeolite seed crystals have been attached is contacted with a reaction solution containing zeolite raw material, and the temperature of the reaction solution is raised to a prescribed temperature to form a zeolite layer on the porous support; and a support separating step in which the porous support on which the zeolite layer has been formed is separated from the reaction solution; wherein in the layer forming step, after the start of contact between the porous support and reaction solution, the temperature of the reaction solution is held at or below 40° C. for at least 30 minutes before being raised to the prescribed temperature.Type: GrantFiled: August 17, 2006Date of Patent: September 4, 2012Assignee: Mitsubishi Chemical CorporationInventor: Takehito Mizuno
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Publication number: 20120219483Abstract: A carbon dioxide permeable membrane is described. In some embodiments, the membrane includes a body having a first side and an opposite second side; a plurality of first regions formed from a molten carbonate having a temperature of about 400 degrees Celsius to about 1200 degrees Celsius, the plurality of first regions forming a portion of the body and the plurality of first regions extending from the first side of the body to the second side of the body; a plurality of second regions formed from an oxygen conductive solid oxide, the plurality of second regions combining with the plurality of first regions to form the body and the plurality of second regions extending from the first side of the body to the second side of the body; and the body is configured to allow carbon dioxide to pass from the first side to the second side.Type: ApplicationFiled: April 23, 2012Publication date: August 30, 2012Inventors: Klaus S. Lackner, Alan C. West, Jennifer L. Wade
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Patent number: 8221525Abstract: A method of oxygen enrichment in which a gaseous mixture containing O2 molecules and N2 molecules is provided to a feed side of a SAPO molecular sieve, oxygen enrichment membrane having pore sizes suitable for discriminating between O2 molecules and N2 molecules, resulting in selective transport of the O2 molecules through the membrane to a permeate side of the membrane. Also disclosed is a method for producing the membrane.Type: GrantFiled: July 16, 2010Date of Patent: July 17, 2012Assignee: Gas Technology InstituteInventors: Shiguang Li, Qinbai Fan
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Patent number: 8196755Abstract: A process for the production of a composite membrane, one or more microporous separation layers comprising a zeolite of the MFI type being produced by hydrothermal synthesis on a porous substrate, wherein one or more additives from the group consisting of linear (C1-C4)-alcohols, ammonia, primary, secondary and tertiary amines having in each case (C1-C4)-alkyl radicals, (C1-C4)-aminoalcohols and (C3-C4)-ketones are added to the synthesis solution for the hydrothermal synthesis.Type: GrantFiled: May 21, 2007Date of Patent: June 12, 2012Assignee: BASF SEInventors: Armin Diefenbacher, Hartwig Voss, Gunter Schuch, Manfred Noack, Ingolf Voigt, Hannes Richter, Juergen Caro