Patent application number | Description | Published |
20080216650 | Synthesis of Zeolites and Zeolite Membranes Using Multiple Structure Directing Agents - SAPO-34 membranes and methods for their preparation and use are described. The SAPO-34 membranes are prepared by contacting at least one surface of a porous membrane support with a synthesis gel comprising a first and a second templating agent. SAPO-34 crystals having a narrow size distribution were applied to the surface of the support prior to synthesis. A layer of SAPO-34 crystals is formed on at least one surface of the support. SAPO-34 membranes of the invention can have improved selectivity for certain gas mixtures, including mixtures of carbon dioxide and methane. | 09-11-2008 |
20080296305 | Fluid Storage and Purification Method and System - A method and device for storing and dispensing a fluid includes providing a vessel configured for selective dispensing of the fluid therefrom. Provided within a vessel is a nancomposite material comprising an imidazolium surfactant and an integral solvent that is essential to the formation of the nancomposite material. The fluid is contacted with the nanocomposite material for take-up of the fluid by the polymerized nanocomposite material. The fluid is released from the nanocomposite material and dispensed from the vessel. | 12-04-2008 |
20080319202 | FLUID STORAGE AND DISPENSING METHODS AND APPARATUS - A method and device for storing and dispensing a fluid includes providing a vessel configured for selective dispensing of the fluid therefrom. Provided within a vessel is a nanocomposite material comprising an imidazolium surfactant and an integral solvent that is essential to the formation of the nanocomposite material. The fluid is contacted with the nanocomposite material for take-up of the fluid by the polymerized nanocomposite material. The fluid is released from the nanocomposite material and dispensed from the vessel. | 12-25-2008 |
20090171098 | Heteroaryl Salts and Methods For Producing and Using the Same - The invention provides heteroaryl salts and methods for producing the same. In particular, the invention provides heteroaryl salts of the formula: | 07-02-2009 |
20090173693 | LYOTROPIC LIQUID CRYSTAL MEMBRANES BASED ON CROSS-LINKED TYPE I BICONTINUOUS CUBIC PHASES - The invention provides composite nanofiltration membranes with a lyotropic liquid crystal (LLC) polymer composition embedded in or forming a layer on a porous support. The LLC membranes are prepared from LLC monomers which form a bicontinuous cubic (Q | 07-09-2009 |
20090291872 | Ionic Liquids and Methods For Using the Same - The present invention provides compositions comprising ionic liquids and an amine compound, and methods for using and producing the same. In some embodiments, the compositions of the invention are useful in reducing the amount of impurities in a fluid medium or a solid substrate. | 11-26-2009 |
20090291874 | IONIC LIQUIDS AND METHODS FOR USING THE SAME - The present application discloses compositions comprising ionic liquids and an amine compound, and methods for using and producing the same. In some embodiments, the compositions disclosed herein are useful in reducing the amount of impurities in a fluid medium or a solid substrate. | 11-26-2009 |
20090308752 | Electrochemical Pump - The invention provides electrochemically-based methods and devices for producing fluid flow and/or changes in fluid pressure. In the methods and devices of the invention, current passes through a divided electrochemical cell. Adjacent compartments of the cell are divided by an ionically conducting separator. Each compartment includes an electrode and an electrolyte solution or ionic liquid. The electrolyte solution(s) or ionic liquid(s) and the ionically conducting separator are selected to obtain the desired relationship between the current through the cell and the fluid flowrate and/or change in fluid pressure. | 12-17-2009 |
20100102001 | VALVING AND STORAGE USING MOLECULAR SIEVE MEMBRANES - The invention provides chemically activated valves based on crystalline molecular sieve membranes. Adsorption of a swelling agent within the pores of the molecular sieve crystals limits transport through the membrane. Desorption of the swelling agent can re-establish transport through the membrane. This valving mechanism can be used in methods for storing and dispensing various substances. | 04-29-2010 |
20100219067 | Electrochemical High Pressure Pump - The invention provides electrochemically-based methods and devices for producing fluid flow and/or changes in fluid pressure. In the methods and devices of the invention, current is passed through a divided electrochemical cell. Adjacent compartments of the cell are divided by a separator which comprises an ionically conducting separator. Each compartment includes an electrode and an electrolyte solution or ionic liquid. The electrolyte solution(s) or ionic liquid(s) and the ionically conducting separator are selected to obtain the desired relationship between the current through the cell and the fluid flowrate and/or change in fluid pressure. | 09-02-2010 |
20110015057 | MEMBRANES FOR HIGHLY SELECTIVE SEPARATIONS - The present invention provides modified molecular sieve membranes with improved CO | 01-20-2011 |
20110284063 | HIGH EFFICIENCY DYE-SENSITIZED SOLAR CELL WITH LAYERED STRUCTURES - A dye-sensitized solar cell (DSSC) is provided. The DSSC anode includes a first electron-collecting layer deposited on a substrate and a first electron-transporting layer deposited on the first electron-collecting layer, the first electron-transporting layer containing light-absorbing dye. The DSSC anode also includes a second nanoporous electron-collecting layer deposited on the first electron-transporting layer; and a second electron-transporting layer deposited on the second porous electron-collecting layer, the second electron-transporting layer containing light-absorbing dye. Methods of fabricating the DSSC anode are also provided. | 11-24-2011 |
20120006194 | HIGH FLUX SAPO-34 MEMBRANES FOR CO2/CH4 SEPARATION AND TEMPLATE REMOVAL METHOD - 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 (CO | 01-12-2012 |
20120186446 | IMIDAZOLIUM-BASED ROOM-TEMPERATURE IONIC LIQUIDS, POLYMERS, MONOMERS, AND MEMBRANES INCORPORATING SAME - The present invention provides gels, solutions, films, membranes, compositions, and other materials containing polymerized and/or non-polymerized room-temperature ionic liquids (RTILs). These materials are useful in catalysis, gas separation and as antistatic agents. The RTILs are preferably imidazolium-based RTILs which are optionally substituted, such as with one or more hydroxyl groups. Optionally, the materials of the present invention are composite materials comprising both polymerized and non-polymerized RTILs. The RTIL polymer is formed from polymerized RTIL cations typically synthesized as monomers and polymerized in the presence of the non-polymerized RTIL cations to provide a solid composite material. The non-polymerized RTIL cations are not covalently bound to the cationic polymer but remain as free cations within the composite material able to associate with charged subunits of the polymer. These composite materials are useful in catalysis, gas separation, and antistatic applications. | 07-26-2012 |
20140154499 | Method and Membrane for Nanoporous, Bicontinuous Cubic Lyotropic Liquid Crystal Polymer Membranes that Enable Facile Film Processing and Pore Size Control - A method of forming a nanoporous membrane includes preparing a solution of a gemini Imidazolium Lyotropic Liquid Crystal (LLC) monomer, a polar low-volatility organic solvent, and a radical photo-initiator in a volatile organic solvent; solvent-casting the solution onto a porous material, evaporating the volatile organic solvent; heating such that the gemini imidazolium monomer forms a Q-phase material and photopolymerizing the imidazolium monomer by exposing the radical photo-initiator to UV light; and exchanging the polar low-volatility organic solvent. Also disclosed is a membrane composed of polymerized gemini imidazolium LLC monomers, and a thin-film composite membrane having the Q-phase material supported on a porous supporting membrane. | 06-05-2014 |
20140352533 | SEEDED-GEL SYNTHESIS OF HIGH FLUX AND HIGH SELECTIVITY SAPO-34 MEMBRANES FOR CO2/CH4 SEPARATIONS - The invention provides methods for making silicoaluminophosphate-34 (SAPO-34) membranes comprising interlocking SAPO-34 crystals. In the methods of the invention, the SAPO-34 membranes are formed through in situ crystallization on a porous support using a synthesis mixture initially including a SAPO-34 forming gel and a plurality of SAPO-34 crystals dispersed in the gel. The invention also provides supported SAPO-34 membranes made by the methods of the invention. The invention also provides methods for separating a first gas component from a gas mixture, the methods comprising the step of providing a membrane of the invention. | 12-04-2014 |