Patent application number | Description | Published |
20080214686 | PROCESS FOR PRODUCTION OF ZEOLITE FILM - A process for producing a zeolite membrane comprising a seed crystal forming step of placing, in a pressure-resistant vessel, a seeding sol containing silica, water and a structure-directing agent and a support in a state that the support is immersed in the seeding sol and heating the heat-resistant vessel to form a zeolite seed crystal on the surface of the support, and a membrane formation step of allowing the zeolite seed crystal to grow to form a zeolite membrane on the surface of the support. In the seed crystal forming step, the molar ratio of water/silica in the seeding sol is set 10 to 50 and the heating of the pressure-resistant vessel is conducted at 90 to 130° C. The crystal c-axis of the present zeolite membrane is oriented in a direction vertical to the surface of the support and its thickness is uniform. | 09-04-2008 |
20080217240 | ORIENTED ZEOLITE FILM-PROVIDED STRUCTURE - An oriented zeolite membrane-provided structure comprising a support and a membrane-like, MFI type zeolite crystal (an oriented zeolite membrane) provided on the surface of the support, wherein, in the zeolite crystal, the proportion of zeolite crystals whose c-axes are oriented at an angle of 90°±33.76° relative to the surface of the support, is 90% or more of the whole zeolite crystals and the oriented zeolite membrane has a thickness of 1 to 30 μm. The present invention provides an oriented zeolite membrane-provided structure comprising a support and an oriented zeolite membrane provided thereon, wherein the c-axes of zeolite crystals of the membrane are oriented in a direction vertical to the surface of the support and the thickness of the membrane is small. | 09-11-2008 |
20080217247 | METHOD OF SEPARATNG LIQUID MIXTURE - A method of separating a liquid mixture selectively separate a substance having a molecular weight of 90 or more from a liquid mixture | 09-11-2008 |
20090007780 | METHOD OF DEHYDRATION, DEHYDRATING APPARATUS, AND MEMBRANE REACTOR - A dehydration method by which water is selectively separated from a water-containing mixture | 01-08-2009 |
20100072127 | SEPARATION MEMBRANE COMPLEX, AND METHOD FOR MANUFACTURING THE SEPARATION MEMBRANE COMPLEX - A separation membrane complex | 03-25-2010 |
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 |
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 |
20120000358 | STRUCTURE PROVIDED WITH ZEOLITE SEPARATION MEMBRANE, METHOD FOR PRODUCING SAME, METHOD FOR SEPARATING MIXED FLUIDS AND DEVICE FOR SEPARATING MIXED FLUIDS - There is provided a zeolite separation membrane-provided article having gaps or pores larger than pores inherent to zeolite crystals and controlled within an appropriate range and being capable of achieving both high permeability and high separability for components with small difference in adsorption properties or a component having a smaller molecular diameter than the diameter of the pores, a method for producing the same, a method for separating mixed fluids, and a device for separating mixed fluids. The zeolite separation membrane-provided article is provided with a zeolite membrane having an N | 01-05-2012 |
20130059213 | SELECTIVELY OXYGEN-PERMEABLE SUBSTRATE, METAL-AIR BATTERY POSITIVE ELECTRODE AND METAL-AIR BATTERY - A selectively oxygen-permeable substrate has a magnetic material dispersion layer having carbon as the main component and a magnetic material dispersed therein. The magnetic material dispersion layer has a gas introduction face for introducing gas into the inside thereof, and the magnetic material dispersion layer is preferably a layer where a magnetic material is dispersed in a porous carbon membrane and can be used as a substrate for a metal-air battery positive electrode. More preferably, the selectively oxygen-permeable substrate has the magnetic material dispersion layer and a porous substrate. A selectively oxygen-permeable substrate can selectively introduce oxygen in the air and have high durability against an electrolytic solution. | 03-07-2013 |
20130106359 | METAL-AIR BATTERY SYSTEM INCLUDING CO2 SELECTIVE ABSORBER AND OPERATING METHOD THEREFOR | 05-02-2013 |