Class / Patent application number | Description | Number of patent applications / Date published |
423709000 | Seed used | 28 |
20090220414 | ZEOLITIC SEPARATION MEMBRANE AND PROCESS FOR PRODUCING THE SAME - 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. The production process of the invention yields a zeolite separation membrane that can accomplish reliable and satisfactory separation of alcohol and water even when the water content relative to alcohol is low. | 09-03-2009 |
20090269276 | PROCESS FOR PRODUCING ZEOLITE SEPARATION MEMBRANE - The present invention provides a process for production of a zeolite separation membrane with satisfactory separation performance. The process for production of a zeolite separation membrane according to the invention is comprising: a seed crystal-attaching step in which: a sealed body ( | 10-29-2009 |
20100178241 | NOVEL PROCESS FOR PREPARING EU-1 ZEOLITE - The invention concerns a process for preparing an EU-1 zeolite having a XO | 07-15-2010 |
20100322847 | ORGANOTEMPLATE-FREE SYNTHETIC PROCESS FOR THE PRODUCTION OF A ZEOLITIC MATERIAL - The present invention relates to an organotemplate-free synthetic process for the production of a zeolitic material having a BEA framework structure comprising YO | 12-23-2010 |
20110044891 | High Metal Content Molecular Sieves and Their Manufacture - A process for manufacturing a synthetic porous crystalline molecular sieve requires an aqueous reaction mixture comprising a source of X | 02-24-2011 |
20110243838 | UZM-37 Aluminosilicate Zeolite Method of Preparation - A new family of crystalline aluminosilicate zeolites has been synthesized. These zeolites are represented by the empirical formula. | 10-06-2011 |
20120009120 | THERMAL CRACKING RESISTANT ZEOLITE MEMBRANE AND METHOD OF FABRICATING THE SAME - The present disclosure relates to a thermal cracking resistant zeolite membrane and a method of fabricating the same. The method includes dissolving an alumina-based material, a silica-based material and sodium hydroxide in water to prepare an aqueous solution, stirring the aqueous solution to form a hydrothermal solution, preparing a slurry of zeolite seeds through wet-type vibration pulverization and centrifugal separation of zeolite powder, passing the zeolite seeds through a support by vacuum filtration such that the zeolite seeds can be infiltrated into an inner region of the support ranging from a depth of 3 μm to a depth corresponding to 50% of a total thickness of the support, and immersing the support into the hydrothermal solution for hydrothermal treatment to grow a dense zeolite separation layer not only on the surface of the support but also on the inner region thereof. The zeolite membrane prevents the occurrence of thermal cracking on the zeolite separation layer, thereby providing good thermal stability and separation performance during heating and at a target processing temperature. | 01-12-2012 |
20120269719 | LARGE CRYSTAL, ORGANIC-FREE CHABAZITE, METHODS OF MAKING AND USING THE SAME - There is disclosed a method to synthesize microporous crystalline material comprising a metal containing chabazite having a crystal size greater than 0.5 microns and a silica-to-alumina ratio (SAR) between 5 and 15, wherein the method is carried out without the use of an organic structural directing agent and without requiring calcination. There is also disclosed a large crystal organic free chabazite made according to the disclosed method. In addition, there are disclosed methods of using the disclosed crystalline material, such as in the selective catalytic reduction of NO | 10-25-2012 |
20130064758 | Process For The Organotemplate-Free Synthetic Production Of A Zeolitic Material Using Recycled Mother Liquor - The present invention relates to an organotemplate-free synthetic process for the production of a zeolitic material comprising YO | 03-14-2013 |
20130101503 | Process For The Production Of A Core/Shell Zeolitic Material Having A CHA Framework Structure - The present invention relates to a process for the preparation of a zeolitic material having a CHA framework structure, said zeolitic material comprising zeolite crystals having a core-shell structure, wherein said process comprises the steps of
| 04-25-2013 |
20130129611 | Organotemplate-free Synthetic Process for the Production of a Zeolitic Material of the CHA-Type Structure - The present invention relates to an organotemplate-free synthetic process for the production of a zeolitic material having a CHA-type framework structure comprising YO | 05-23-2013 |
20130142727 | STABILIZED MICROPOROUS CRYSTALLINE MATERIAL, THE METHOD OF MAKING THE SAME, AND THE USE FOR SELECTIVE CATALYTIC REDUCTION OF NOX - There is disclosed a microporous crystalline material having pore opening ranging from 3 to 5 Angstroms, where the material comprises a first metal chosen from alkali earth group, rare earth group, alkali group, or mixtures thereof, and a second metal chosen from iron, copper or mixtures thereof; and has a molar silica to alumina ratio (SAR) from 3 to 10. The microporous crystalline material disclosed herein may comprise a crystal structure having building units of double-6-rings (d6r) and pore opening of 8-rings as exemplified with framework types defined by the Structure Commission of the International Zeolite Association having structural codes of CHA, LEV, AEI, AFT, AFX, EAB, ERI, KFI, SAT, TSC, and SAV. There is also disclosed a method of selective catalytic reduction of nitrogen oxides in exhaust gas, comprising at least partially contacting the exhaust gases with an article comprising the disclosed microporous crystalline material. | 06-06-2013 |
20130156689 | METHOD FOR PRODUCING MTW-TYPE ZEOLITE - The method for producing an MTW-type zeolite according to the present invention includes: mixing a silica source, an alumina source, an alkali source, a lithium source, and water so as to obtain a reaction mixture having a composition represented by specific molar ratios; (2) adding an MTW-type zeolite which has a SiO | 06-20-2013 |
20130156690 | ZEOLITE PRODUCTION METHOD - Disclosed is a method for readily and inexpensively producing zeolite without using an organic structure-directing agent (organic SDA). Specifically disclosed is a method whereby a gel containing a silica source, an alumina source, an alkaline source and water is reacted with zeolite seed crystals, to produce a zeolite with the same kind of skeletal structure as the zeolite. The gel used is a gel of a composition whereby, when a zeolite is synthesized from this gel only, the synthesized zeolite comprises at least one of the kinds of composite building units of the target zeolite. | 06-20-2013 |
20130202524 | Iron- And Copper-Containing Zeolite Beta From Organotemplate-Free Synthesis And Use Thereof In The Selective Catalytic Reduction Of NOx - Provided is a process for the production of a zeolitic material having a BEA-type framework structure comprising YO | 08-08-2013 |
20130343986 | METHOD FOR PRODUCING MTW-TYPE ZEOLITE - Provided is a method for producing an MTW-type zeolite. The reaction mixture contains a silica source, an alumina source, an alkali source, and water is reacted with a seed crystal of a zeolite to produce an MTW-type zeolite. The reaction mixture has a composition, which makes a synthesized zeolite contain an MFI-type zeolite when the zeolite is synthesized solely from the reaction mixture, is used. As the seed crystal, a beta-type zeolite which has a ratio of SiO | 12-26-2013 |
20140056805 | METHOD FOR PREPARATION OF MESOPOROUS ZEOLITES - The provided is a preparation method of a mesoporous zeolite, particularly a method for preparing mesoporous zeolite through a simple process without using costly materials such as an organic amine template or a surfactant. | 02-27-2014 |
20140241981 | METHODS FOR SYNTHESIZING MICROPOROUS CRYSTALS AND MICROPOROUS CRYSTAL MEMBRANES - This disclosure provides methods of making microporous crystals and microporous crystal membranes. | 08-28-2014 |
20150078994 | NOVEL COPPER SILICATE MOLECULAR SIEVE, AND METHOD FOR PRODUCING THE SAME - The present disclosure relates to a novel copper silicate molecular sieve, and a novel method for producing the molecular sieve, which is capable of synthesizing the copper silicate molecular sieve with a high yield. | 03-19-2015 |
20150086474 | METHOD FOR PRODUCING PAU ZEOLITE - Provided is a method that is for producing a PAU zeolite and that can have an environmental impact that is reduced while, as much as possible, not using a structure-defining agent. The method for producing a PAU zeolite produces by means of (1) mixing a silica source, an alumina source, an alkali source, and water in a manner so as to result in a reaction mixture having a composition represented by a specific mole ratio, (2) using as the seed crystal a PAU zeolite that does not contain organic compounds and has a SiO | 03-26-2015 |
20150118151 | SEEDED SYNTHESIS OF ALUMINOSILICATE MOLECULAR SIEVES - A process for producing an aluminosilicate molecular sieve comprises crystallizing a reaction mixture comprising water, a source of silica and seeds of a silicoaluminophosphate and/or an aluminophosphate molecular sieve. The resultant aluminosilicate molecular sieve product can advantageously be substantially free of framework phosphorus. | 04-30-2015 |
20150298983 | Organotemplate-Free Solid-State Synthetic Method For Zeolite Molecular Sieves - Described is a preparation method for zeolite molecular sieves by means of solid-state reactions without the usage of organic templates. The method comprises the following steps: grinding and mixing the solid raw materials comprising the silicon source, the aluminum source and the alkali source, transferring the obtained mixture into an autoclave, conducting the crystallization for a period of 5 hours-20 days at a temperature of 50-200° C. After filtering and drying the crystallized products, molecular sieves in a powder form can be obtained. The method provides different molecular sieves, including ZSM-5 zeolite, Beta zeolite, FAU zeolite, MOR zeolite, LTA zeolite, and GIS zeolite, with a high crystallinity and an adjustable Si/Al ratio within a certain range. The obtained products exhibit a high crystallinity and a high purity, and the method does not require the use of organic templates and solvents, which avoids unnecessary consumptions during the production, simplifies the synthetic process, and also increases the yield from the autoclave reactor. | 10-22-2015 |
20150360963 | PROCESS FOR PRODUCING VET-TYPE ZEOLITE - A process for producing a VET-type zeolite is provided in which the use of a structure-directing agent is minimized and the environmental burden can be minimized. This process for producing a VET-type zeolite comprises (1) mixing a zinc source, an element M | 12-17-2015 |
20160023912 | SYNTHESIS OF HIGH SILICA ZEOLITE VIA INTERZEOLITE TRANSFORMATION WITHOUT OSDAs - Provided is a method for preparing a zeolite having a Si/Al ratio of at least 10 by interzeolite transformation in the absence of an organic structure directing agent. The method is more cost effective and less equipment intensive as it eliminates the costly organic structure directing agent and the waste treatment at the plant. | 01-28-2016 |
20160023913 | INTERZEOLITE TRANSFORMATION AND METAL ENCAPSULATION IN THE ABSENCE OF AN SDA - Provided is a method of encapsulating a metal in a zeolite. The method comprises inserting a metal precursor into a parent zeolite, and then converting the parent zeolite to a zeolite having a higher framework density than the parent zeolite. The conversion is achieved without the need of an organic structure directing agent. | 01-28-2016 |
20160200585 | METHOD FOR PRODUCING MTW-TYPE ZEOLITE | 07-14-2016 |
20180022611 | PROCESS FOR THE PREPARATION OF A DEALUMINATED ZEOLITIC MATERIAL HAVING THE BEA FRAMEWORK STRUCTURE | 01-25-2018 |
20180022612 | METHOD FOR PRODUCING BETA ZEOLITE | 01-25-2018 |