| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 502004000 | IN FORM OF A MEMBRANE | 33 |
| 20090029845 | FAU-structural-type supported zeolite membranes, their process for preparation and their applications - The invention relates to a FAU-type zeolite membrane that comprises a FAU-type zeolite crystal layer incorporated in the surface porosity of at least one selected face of a porous substrate, in which the ratio between the thickness of said zeolite layer incorporated in the surface porosity of said selected face of the substrate and the total thickness of said zeolite layer is at least 70%. It also relates to processes for preparation and application of these membranes. | 01-29-2009 |
| 20090131242 | Method of Making Polymer Functionalized Molecular Sieve/Polymer Mixed Matrix Membranes - The present invention discloses a method of making polymer functionalized molecular sieve/polymer mixed matrix membranes (MMMs) with either no macrovoids or voids of less than several Angstroms at the interface of the polymer matrix and the molecular sieves by incorporating polyethersulfone (PES) or cellulose triacetate (CTA) functionalized molecular sieves into a continuous polyimide or cellulose acetate polymer matrix. The MMMs, particularly PES functionalized AlPO-14/polyimide MMMs and CTA functionalized AlPO-14/CA MMMs have good flexibility and high mechanical strength, and exhibit significantly enhanced selectivity and/or permeability over the polymer membranes made from the corresponding continuous polymer matrices for carbon dioxide/methane (CO | 05-21-2009 |
| 20090149313 | Mixed Matrix Membranes Containing Low Acidity Nano-Sized SAPO-34 Molecular Sieves - The present invention discloses mixed matrix membranes (MMMs) containing polymer-functionalized low acidity, ultra low silica-to-alumina ratio, nano-sized SAPO-34 small pore molecular sieves and a continuous polymer matrix and methods for making and using these membranes. The surface functionalization of these molecular sieves provides a desired interfacial adhesion between SAPO-34 nano-particles and the continuous polymer matrix, which results in either no macrovoids or voids of less than 5 angstroms at the interface of the continuous polymer matrix and SAPO-34 in the MMMs. These MMMs, in the form of symmetric dense film, asymmetric flat sheet membrane, or asymmetric hollow fiber membranes, have good flexibility and high mechanical strength, and exhibit remarkably enhanced CO | 06-11-2009 |
| 20090203515 | Exhaust Gas Purifying Catalyst - To provide an exhaust gas purifying catalyst capable of exhibiting designed characteristics without incurring a material loss. | 08-13-2009 |
| 20090264277 | Picoscale catalysts for hydrogen catalysis - A catalyst for hydrogen generation from an alkaline aqueous solution of hydrogen containing salts comprising a silicon-based ceramic surface covered with a mixture of metals known as transition metals and noble metals. The silicon-based ceramic surface may be self-supporting or may be deposited as a thin film on a carbonaceous substrate. The carbonaceous surface may be self-supporting or be in the form of a film that is supported on a substrate of a fourth material, where the fourth material has the function of providing physical support to the substrate. The said carbonaceous substrate can be made from a solid material or from a porous structure, of which carbon nanotube paper, also known as Bucky paper, is one example. | 10-22-2009 |
| 20090318282 | Zeolite-Like Membranes from Nano-Zeolitic Particles - A silicate-based microporous ceramic molecular sieve membrane zeolite-like properties with an ordered stack of nanometre-sized slab-shaped building blocks having zeolite framework. A method for producing a membrane does not involve a hydrothermal treatment step, hence avoiding the formation of zeolite crystals. | 12-24-2009 |
| 20100075827 | CATALYTIC NANOPOROUS MEMBRANES - 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. The membrane has a high flow rate of material with 100% selectivity. Also provided is a method for producing a catalytic membrane having flow-through pores and discreet catalytic clusters adhering to the inside surfaces of the pores. | 03-25-2010 |
| 20100137124 | High Performance Cross-Linked Polybenzoxazole and Polybenzothiazole Polymer Membranes - In the present invention high performance cross-linked polybenzoxazole and polybenzothiazole polymer membranes and methods for making and using these membranes have been developed. The cross-linked polybenzoxazole and polybenzothiazole polymer membranes are prepared by: 1) first synthesizing polyimide polymers comprising pendent functional groups (e.g., —OH or —SH) ortho to the heterocyclic imide nitrogen and cross-linkable functional groups in the polymer backbone; 2) fabricating polyimide membranes from these polymers; 3) converting the polyimide membranes to polybenzoxazole or polybenzothiazole membranes by heating under inert atmosphere such as nitrogen or vacuum; and 4) finally converting the membranes to high performance cross-linked polybenzoxazole or polybenzothiazole membranes by a crosslinking treatment, preferably UV radiation. The membranes can be fabricated into any convenient geometry. The high performance cross-linked polybenzoxazole and polybenzothiazole polymer membranes of the present invention are suitable for a variety of liquid, gas, and vapor separations. | 06-03-2010 |
| 20100144512 | METHOD FOR PRODUCTION OF DDR TYPE ZEOLITE MEMBRANE - A method for producing a DDR type zeolite membrane, which method comprises 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 (SiO | 06-10-2010 |
| 20100298115 | METHOD FOR MANUFACTURING A STRUCTURE PROVIDED WITH DDR ZEOLITE MEMBRANE - 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. | 11-25-2010 |
| 20100304953 | Zeolite Membranes for Separation of Mixtures Containing Water, Alcohols, or Organics - Zeolite membrane sheets for separation of mixtures containing water, alcohols, or organics are provided, as well as methods for making the same. Thin, but robust, zeolite membrane sheets having a zeolite membrane layer formed directly on a thin porous metal support sheet provide improved separations performance. The zeolite membrane layers have a thickness less than 3 μm and are formed on a thin porous metal support sheet having a thickness less than or equal to approximately 200 μm. The porous metal support sheet comprises an average pore size of less than 3 μm, a porosity between 25% and 75%, and a thickness of less than or equal to 200 μm. | 12-02-2010 |
| 20100311565 | MICROPOROUS ALUMINOPHOSPHATE MOLECULAR SIEVE MEMBRANES FOR HIGHLY SELECTIVE SEPARATIONS - The present invention discloses microporous aluminophosphate (AlPO | 12-09-2010 |
| 20110160039 | METHOD FOR MANUFACTURING ZEOLITE MEMBRANE, AND ZEOLITE MEMBRANE - 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. | 06-30-2011 |
| 20110294653 | Fabrication of Catalyzed Ion Transport Membrane Systems - 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). | 12-01-2011 |
| 20110301017 | PROCESS FOR THE PRODUCTION OF DDR-TYPE ZEOLITE MEMBRANES - 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. | 12-08-2011 |
| 20120264589 | POLYMERS OF INTRINSIC MICROPOROSITY CONTAINING TETRAZOLE GROUPS - 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. | 10-18-2012 |
| 20120322646 | BLEND POLYMER GAS SEPARATION MEMBRANE - The present invention discloses a new type of polyimide membrane with high permeances and high selectivities for gas separations and particularly for CO | 12-20-2012 |
| 20130005561 | COMPOSITE MEMBRANE WITH INTEGRAL RIM - 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. | 01-03-2013 |
| 20130035225 | ORGANIC/INORGANIC HYBRID CATALYTIC MATERIALS, THEIR PREPARATION, USE IN SELECTIVE PROCESSES AND REACTORS CONTAINING THEM - 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 α,β unsaturated acids or esters. | 02-07-2013 |
| 20130059722 | ONE-STEP SYNTHESIS OF MESOPOROUS PENTASIL ZEOLITE WITH SINGLE-UNIT-CELL LAMELLAR STRUCTURAL FEATURES - 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. | 03-07-2013 |
| 20130143728 | Method Of Forming A Crosslinked Superabsorbent Polymer On A Substrate And Uses Thereof - A crosslinked superabsorbent polymer can be formed on a nonwoven or woven substrate by a method comprising:
| 06-06-2013 |
| 20130184144 | METHODS OF MAKING NON-COVALENTLY BONDED CARBON-TITANIA NANOCOMPOSITE THIN FILMS AND APPLICATIONS OF THE SAME - In one aspect, a method of making non-covalently bonded carbon-titania nanocomposite thin films includes: forming a carbon-based ink; forming a titania (TiO | 07-18-2013 |
| 20130184145 | POROUS BODY AND PRODUCTION METHOD THEREFOR - 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 μm to 500 μm 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. | 07-18-2013 |
| 20130244861 | COMPOSITE CATALYTIC MEMBRANE APPLIED TO CATALYTIC ESTERIFICATION AND PREPARATION METHOD THEREOF - 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. The process is simple and easy to control and scale-up. | 09-19-2013 |
| 20130274087 | METAL ORGANIC FRAMEWORK MODIFIED MATERIALS, METHODS OF MAKING AND METHODS OF USING SAME - 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. | 10-17-2013 |
| 20140315709 | SELECTIVE SONICATION-ASSISTED DEPOSITION METHOD OF INORGANIC PARTICLES AND CHA ZEOLITE MEMBRANES GROWN FROM SEEDED LAYERS ON SUBSTRATES USING THE METHOD AND PLATE-LIKE SI-CHA ZEOLITE PARTICLES USED FOR SEED LAYER FORMATION AND MANUFACTURING METHOD OF THE SAME - Provided is a selective sonication-assisted deposition method of inorganic particles and CHA zeolite membranes grown from seeded uniform layers on substrates using the method and plate-like Si-CHA zeolite particles used for seed layer formation and manufacturing method of the same, in which thin inorganic particles may be selectively deposited on a substrate or on a support, and even a physical interaction between the deposited particles and supports (or substrates) alone allows for obtaining high surface coverage to form a uniform layer, which is critical in reproducible production of membranes of inorganic materials, such as zeolite, by secondary growth. | 10-23-2014 |
| 20150298102 | CATALYTIC HOLLOW FIBERS - A hollow fiber for use in production of hydrogen gas. The hollow fiber contains a porous support layer having an outer surface and an inner surface, a catalyst layer coated on the outer surface, and a selection layer coated on the inner surface. Also disclosed is a method of preparing such a hollow fiber. | 10-22-2015 |
| 20160059215 | MANGANESE OXIDES/GRAPHENE NANOCOMPOSITES, FILMS, MEMBRANES AND METHODS OF MAKING THE SAME - Graphene/manganese oxide-based structures (e.g., nanocomposites, films and membranes) are described herein, as well as methods of making the same. | 03-03-2016 |
| 20160149230 | MULTILAYERED NANOSTRUCTURED FILMS - Processes for forming films comprising multiple layers of nanostructured support elements are described. A first layer of nanostructured support elements is formed by depositing a base material on a substrate and annealing. Further growth of the first layer of nanostructures is then inhibited. Additional layers of nanostructured support elements may be grown on the first layer of nanostructures through additional deposition and annealing steps. The multilayer films provide increased surface area and are particularly useful in devices where catalyst activity is related to the surface area available to support catalyst particles. | 05-26-2016 |
| 20160193571 | SEPARATION MEMBRANE, HYDROGEN SEPARATION MEMBRANE INCLUDING THE SEPARATION MEMBRANE, AND METHOD OF MANUFACTURING THE SEPARATION MEMBRANE | 07-07-2016 |
| 20160376716 | METHOD FOR IMPROVING SOLAR ENERGY CONVERSION EFFICIENCY OF SEMICONDUCTOR METAL OXIDE PHOTOCATALYSIS USING H2/N2 MIXED GAS PLASMA TREATMENT - Disclosed is a method for improving solar energy conversion efficiency of a metal oxide semiconductor photocatalyst, which includes rapidly performing hydrogenation and nitrogenation of a metal oxide semiconductor material through an H | 12-29-2016 |
| 20170232430 | METHOD OF FORMING A SELF-CLEANING FILM SYSTEM | 08-17-2017 |
| 20190143300 | Methods for Treating Filled Microporous Membranes | 05-16-2019 |
