| Entries |
| Document | Title | Date |
|---|
| 20080267860 | Crystalline Microporous Material Of Zeolitic Nature - A crystalline microporous material of zeolitic nature (ITQ-41) having in its calcined form a chemical composition represented by the empirical formula: | 10-30-2008 |
| 20100260664 | Process for Preparing Nano Size Zeolites - A process has been developed to synthesize various zeolites with nano size crystals. The process involves forming an aluminosilicate initiator which exhibits the Tyndall effect and contains no appreciable filterable solids. This initiator is then mixed with a clear solution comprising reactive sources of Al, Si, M and R plus water. M is an alkali or alkaline earth metal while R is an organoammonium compound. The resultant reaction mixture is reacted at a temperature and for a time sufficient to produce a zeolite such as zeolite Y with average crystallite size less than 500 nm or preferably less than 300 nm. | 10-14-2010 |
| 20110033375 | CRYSTALLIZED MATERIAL WITH HIERARCHICAL POROSITY CONTAINING SILICON - Hierarchical porosity material consisting of at least two elementary spherical particles having a maximum diameter of 200 microns, at least one of said spherical particles comprises at least one matrix based on silicon oxide and exhibiting crystallized walls, said material having a macropore volume measured by mercury porosimetry ranging between 0.05 and 1 ml/g, a mesopore volume measured by nitrogen volumetric analysis ranging between 0.01 and 1 ml/g and a micropore volume measured by nitrogen volumetric analysis ranging between 0.03 and 0.4 ml/g. The preparation of said material and use of same as adsorbent or as acidic solid is also described. | 02-10-2011 |
| 20120213696 | PROCESS FOR PRODUCTION OF DDR-TYPE ZEOLITE - There is provided a process for producing a DDR-type zeolite having: a raw material solution preparation step of preparing a raw material solution containing 1-adamantaneamine hydrochloride, silica (SiO | 08-23-2012 |
| 20120230910 | METHOD OF PREPARING ZSM-5 ZEOLITE USING NANOCRYSTALLINE ZSM-5 SEEDS - Disclosed herein is a method of preparing ZSM-5, including: providing a nanocrystalline ZSM-5 seed having a size of 70˜300 nm; adding the nanocrystalline ZSM-5 seed to a stock solution including water glass as a silica source, an alumina source, a neutralizer and water to form a reaction mixture; and maintaining the reaction mixture at 150˜200° C. to crystallize the reaction mixture. The method is advantageous in that ZSM-5 having small and uniform crystal sizes and including no impurities can be synthesized in a short period of time. | 09-13-2012 |
| 20130156688 | Process of Producing Zeolite-Based Catalysts for Converting Oxygenates to Lower Olefins - A process of producing a catalyst based on pentasil-type crystalline aluminosilicate is described, including the steps of (a) treating hydrous aluminium oxide with an aqueous, acid-containing medium, (b) mixing the hydrous aluminium oxide treated with aqueous, acid-containing medium from step (a) with an H-zeolite and (c) calcining the mixture obtained in step (b). In addition, a catalyst is disclosed which is obtained by such a process, as well as its use in CMO and OTO processes. | 06-20-2013 |
| 20130171058 | PROCESS FOR ALTERING THE PHYSICO-CHEMICAL PROPERTIES OF FAUJASITE Y-TYPE ZEOLITES - The present invention relates to a process for modifying the physical and chemical properties of Faujasite Y-type zeolites (FAU), mainly used as a base material of catalyst used in the Fluid Catalytic Cracking (FCC) process, for the interest of the oil refining industry, in which the conversion of oil heavy fractions into lighter fractions, with a higher commercial value, is carried out. | 07-04-2013 |
| 20130183230 | INTRODUCTION OF MESOPOROSITY INTO LOW SILICA ZEOLITES - Mesoporous X and A zeolites and methods for production thereof are disclosed herein. Such mesoporous zeolites can be prepared by contacting an initial zeolite with an acid in conjunction with a mesopore forming agent. The initial zeolite can have a framework silicon-to-aluminum content in the range of from about 1 to about 2.5. Additionally, such mesoporous zeolites can have a total 20 to 135 Å diameter mesopore volume of at least 0.05 cc/g. | 07-18-2013 |
| 20130183231 | INTRODUCTION OF MESOPOROSITY INTO ZEOLITE MATERIALS WITH SEQUENTIAL ACID, SURFACTANT, AND BASE TREATMENT - Compositions and methods for introducing mesoporosity into zeolitic materials employing sequential acid, surfactant, and base treatments are disclosed herein. Mesopores can be introduced into zeolitic materials, such as zeolites, by treatment with an acid and surfactant followed by treatment with a base. The resulting mesoporous zeolitic materials can have a total 20 to 135 Å diameter mesopore volume of at least 0.05 cc/g. Additionally, the resulting mesoporous zeolitic materials can have a total 0 to 20 Å micropore volume of at least 0.10 cc/g. | 07-18-2013 |
| 20130183232 | GLYCOXY SILANES AS A SOURCE OF SILICA AND SILICATE PRECIPITATES - The present invention discloses glycoxy silanes as a source of silica and silica precipitated by advantageous chemical reactions preferably beginning with biogenic silica. Alkoxy C—O—S | 07-18-2013 |
| 20130230450 | Catalysts Useful for the Alkylation of Aromatic Hydrocarbons - A catalyst useful for the alkylation or transalkylation of aromatic compounds is disclosed. The catalyst is an acid-treated zeolitic catalyst produced by a process including contacting an acidic zeolitic catalyst comprising surface non-framework aluminum and framework aluminum with an organic dibasic acid at a catalyst to acid weight ratio in the range from about 2:1 to about 20:1 and at a temperature in the range from about 50° C. to about 100° C. to selectively remove at least a portion of the surface non-framework aluminum. The resulting catalyst may have a measured first-order rate constant, k | 09-05-2013 |
| 20140301942 | PROCESS FOR MODIFYING TS-1 BASED ON MIXED SOLUTION OF QUATERNARY AMMONIUM SALT AND INORGANIC BASE - This invention belongs to the technical field of inorganic chemical synthesis, relating to a modification method for titanium-silicalite zeolite (TS-1). The feature of the invention is pretreating the TS-1, after that the TS-1 is modified by the mixture of quaternary ammonium salts and inorganic base. The quaternary ammonium salts mentioned above include tetrapropylammonium fluoride, tetrapropylammonium chloride, tetrapropylammonium iodide and their mixture. The inorganic base include that LiOH, NaOH and KOH and their mixture. TS-1 after the modification is aftertreated at last. The benefit of the invention is universal capable to modify the TS-1 synthesized by any method, specially the TS-1 with low cost method, the modification can enhance the catalytic performance on both gas and liquid phase epoxidation of propylene. | 10-09-2014 |
| 20140356279 | METHOD FOR MODIFYING TITANIUM SILICON MOLECULAR SIEVES - This invention belongs to the technical field of inorganic chemical synthesis, relating to a modification method for titanium-silicalite zeolite (TS-1). The feature of the invention is pretreating on the TS-1, the TS-1 after pretreatment is modified by the mixture of TPAOH and alkali salts, the alkali salts can be the compounds containing lithium, sodium and potassium element, and then the modification is performed at last. The benefit of the invention is universal capable to modify the TS-1 synthesized by any method, specially the TS-1 with low cost one, the modification can enhance the catalytic performance on both gas and liquid phase epoxidation of propylene. | 12-04-2014 |
| 20150118148 | NOVEL OXIDE MATERIALS AND SYNTHESIS BY FLUORIDE/CHLORIDE ANION PROMOTED EXFOLIATION - The present invention is directed to the synthesis of novel delaminated layered zeolite precursor materials prepared by fluoride/chloride anion-promoted exfoliation. The method comprises, for example, using a combination of fluoride and chloride anions at a mild pH in a non-aqueous solution to affect delamination of a layered zeolite precursor, generally comprising an organic solvent. The method may be used in conjunction with either acidification or sonication, or both. The resulting delaminated zeolite precursors are then isolated. Precursors that are then isolated lack amorphous silica content. The UCB-1 product is an example of such a novel oxide material and is obtained in yields in excess of 90% without the need for sonication. | 04-30-2015 |
| 20160031715 | A METHOD FOR PRODUCING ZEOLITE CRYSTALS AND/OR ZEOLITE-LIKE CRYSTALS - The present invention pertains to a method for producing zeolite or zeolite-like crystals using a composition comprising one or more fluorine-containing compounds as a mineralizing agent. Crystals produced by such a method are smaller in size than crystals available in the art and contain few defects. The invention also relates to zeolite and/or zeolite-like crystals obtainable by a method as provided herein as well as crystals defined by any of the structural characteristics provided herein, and the usage thereof such as in the manufacture of thin films and membranes, absorbents, catalysts etc. | 02-04-2016 |
