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| Number | Title | Issue Date |
| 7560093 | Process for preparing detergent builder Zeolite-A from Kimberlite tailings The present invention provides a process for the preparation of detergent builder Zeolite-A from Kimberlite tailing generated as solid waste during diamond mining is disclosed. The process comprises, reacting an acid treated Kimberlite tailing with alkali solution t... | 07/14/2009 |
| 7344695 | In-situ ZSM-5 synthesis A novel method of forming ZSM-5 comprises reacting calcined kaolin microspheres with silicate and a seed solution used for forming zeolite Y under conditions of pH, temperature, and time to yield ZSM-5 crystals formed in-situ on said calcined kaolin microspheres. Th... | 03/18/2008 |
| 7341707 | Method for in-situ synthesis of crystalline microporous metalloaluminophosphate in a formed body The invention concerns a method for production of microporous crystalline metalloaluminium phosphates (ELAPO) based adsorbents or catalysts by in-situ crystallisation of ELAPO inside a formed body. First the formed body containing aluminium phosphate (AIPO) and bind... | 03/11/2008 |
| 7341706 | Method of synthesising crystalline microporous metalloaluminophosphate for a solid body The invention concerns a simple and cheap method for production of microporous crystalline metalloaluminiumphosphates (ELAPO) for use as adsorbent or catalyst by wholly or partially filling the pores of particles containing aluminum phosphate (AIPO) with an aqueous ... | 03/11/2008 |
| 7267812 | Crystalline inorganic porous material and production process therefor A crystalline inorganic porous material having two different types of pores which are macropores having a diameter in the micrometer range and micropores having a diameter in the angstrom range, at least part of the skeleton thereof having a zeolite structure. The c... | 09/11/2007 |
| 7141232 | Preparation of molecular sieves involving spray drying Molecular sieves are prepared by forming a reaction mixture slurry, spray drying the reaction mixture slurry to form particles, and heating the spray dried reaction mixture at a temperature and pressure sufficient to cause crystallization of the molecular sieve. The... | 11/28/2006 |
| 7132095 | Method and device for manufacturing zeolite from ashes resulting from the incineration of combustible waste To provide a substance separating/recovery method using a superconductive magnetic field that separate and recover substances efficiently, to make the ashes harmless, and to generate zeolite. The method of the present invention includes: (1) a step, wherein the ashe... | 11/07/2006 |
| 7101473 | Method of enhancing the activity of FCC catalysts An additive to enhance the activity of an FCC catalyst containing zeolite and matrix components comprises zeolite microspheres having a novel morphology comprising a macroporous matrix and crystallized zeolite freely coating the walls of the pores of the matrix. The... | 09/05/2006 |
| 7014837 | Process for the production of nan-sized zeolite A Described is a process to synthesize nano-size Zeolite A from an amorphous gel precursor which can be synthesized via reaction of NaAlO2, NaOH, and tetraethoxysilane (TEOS). Zeolite A with particle sizes of ˜150 nm was made by transformation of the amorp... | 03/21/2006 |
| 6991678 | Process for preparing microporous crystalline titanium silicate A process for the preparation of crystalline microporous titanium silicates using ethylsilicate-40 and titanium peroxide as silicon and titanium sources respectively is described. The process permits a significant decrease in the production cost of titanium silicate... | 01/31/2006 |
| 6908603 | In-situ ZSM-5 synthesis A novel method of forming ZSM-5 comprises reacting calcined kaolin microspheres with silicate and a seed solution used for forming zeolite Y under conditions of pH, temperature, and time to yield ZSM-5 crystals formed in-situ on said calcined kaolin microspheres. Th... | 06/21/2005 |
| 6835369 | Molecular sieve CIT-6 The present invention relates to new crystalline, molecular sieve CIT-6 that has the topology of zeolite beta. CIT-6 can be in an all-silica form, in a form wherein zinc is in the crystal framework, or a form containing silicon oxide and non-silicon oxides. In a pre... | 12/28/2004 |
| 6821502 | Method of making aluminum-containing zeolite with IFR structure Zeolites having the IFR structure and containing aluminum in their crystal structure can be made by preparing a reaction mixture comprising a zeolite which is an active source of aluminum oxide, an active source of alkali metal oxide, an active source of an oxide of... | 11/23/2004 |
| 6709644 | Small crystallite zeolite CHA The present invention relates to zeolites having the crystal structure of chabazite (CHA) and having small crystallite size, to processes using the small crystallite CHA as a catalyst, and to gas separation processes using the small crystallite CHA. ... | 03/23/2004 |
| 6692722 | Manufacturing method of zeolite from waste The present invention provides a zero emission type method for effective use permitting economical and effective manufacture of zeolite effectively applicable in various sectors of industry by using silicon-containing waste comprising at least one of exha... | 02/17/2004 |
| 6685910 | Macroscopic aggregates of microcrystalline zeolites for static water softening applications Novel morphologies are provided for aluminosilicate zeolite ion-exchange materials useful for static water softening. The zeolites are provided in the form of large aggregates composed of submicron zeolite crystals. Rapid exchange rates, high hardness ion... | 02/03/2004 |
| 6662951 | Process for extracting and purifying naturally occurring zeolite A process for extracting and purifying naturally occurring zeolite from ores in the presence of other mineral phases by using mechanical dispersion and differential suspension to remove a majority of the clay content of the ore. The process continues by r... | 12/16/2003 |
| 6663845 | Method and apparatus for producing zeolite A composition comprising an incineration ash or an aluminosilicate as a raw material is added with an aqueous alkaline solution from an alkali storage tank (3) and heated. The resultant pre-mixture is then mixed and kneaded by a kneader (4) to prepare a k... | 12/16/2003 |
| 6599494 | Process for preparing artificial zeolite by a slurry reaction method A process is provided for the preparation of artificial zeolite comprising the steps of (a) mixing x kilograms of incineration ash or any other aluminosilicate-containing substance with y liters of an aqueous solution of alkali metalhydroxide having a con... | 07/29/2003 |
| 6555089 | Zeolite SSZ-58 composition of matter and synthesis thereof The present invention relates to new crystalline zeolite SSZ-58 prepared using a N-butyl-N-cyclooctylpyrrolidinium cation or N-propyl-N-cyclooctylpyrrolidinium cation templating agent, and processes employing SSZ-58 as a catalyst.... | 04/29/2003 |
| 6544495 | Zeolite SSZ-57 composition of matter and synthesis thereof The present invention relates to a new crystalline zeolite SSZ-57. The present invention also relates to crystalline zeolites prepared by using N-butyl-N-cyclohexylpyrrolidinium cation, N-propyl-N-cycloheptylpyrrolidinium cation or N-butyl-N-cyclooct... | 04/08/2003 |
| 6517807 | Preparation of high silica zeolites bound by zeolite and use thereof This invention relates to a process for producing zeolite-bound high silica zeolites and the use of the zeolite-bound high silica zeolite produced by the process for hydrocarbon conversion. The process is carried out by forming an extrudable paste compris... | 02/11/2003 |
| 6451282 | Process for production of zeolites from raw materials containing alkali alumino hydro-silicates The invention relates to a process for production of zeolites from raw materials with alkali alumino-hydrosilicate content comprising converting the alkali alumino-hydrosilicate content of the raw material into an amorphous state by acidic treatment, sepa... | 09/17/2002 |
| 6451283 | Macroscopic aggregates of microcrystalline zeolites This invention relates to zeolitic molecular sieve compositions and hybrid zeolite-silica compositions characterized by novel morphology in which the zeolite is present as macroscopic aggregates of microcrystalline zeolite. The zeolitic compositions of th... | 09/17/2002 |
| 6436364 | Hydrothermal conversion of Y-zeolite using alkaline earth cations Hydrothermal synthesis of the natural, alkaline earth zeolites via the alteration of Y-zeolite is presented. Synthetic versions of the zeolites harmotome, heulandite, brewsterite and gmelinite are synthesized from Y-zeolite using alkaline earth cations co... | 08/20/2002 |
| 6423295 | Synthesis of aluminum rich AFI zeolite A low silica AFI zeolite and a high purity gmelinite zeolite that have a SiO2 /Al2 O3 ratio of about 10 or less are provided.... | 07/23/2002 |
| 6416732 | Method of forming aluminosilicate zeolites Aluminosilicate zeolites are formed in a novel reaction medium which contains a silicate source and an aluminum source in an aqueous alkaline solution and which reaction medium further includes an additional electrolyte salt. The addition of the electroly... | 07/09/2002 |
| 6413492 | Method of forming high aluminum aluminosilicate zeolites The present invention relates to a method of forming an aluminosilicate zeolite having a Si/Alࣘ1.1. The method comprises forming a reaction mixture by mixing a source of silica, and a source of aluminum in an aqueous alkaline solution having a pH of at ... | 07/02/2002 |
| 6379646 | Crystalline phosphorus-containing molecular sieves Molecular sieves comprising (1) phosphorus oxide; (2) a first oxide comprising an oxide of silicon, germanium or mixtures thereof; and (3) a second oxide comprising an oxide of aluminum, boron or mixtures thereof, said molecular sieve having a mole ratio ... | 04/30/2002 |
| 6368571 | ZSM-5 made from siliceous ash The present invention relates in general to a method of making ZSM-5 zeolite. More specifically, the present invention relates to using plant waste material such as rice hull ash or any siliceous waste containing amorphous SiO2 as a source for ... | 04/09/2002 |
| 6350428 | Preparation of zeolite-bound FAU structure type zeolite and use thereof This invention relates to a process for producing zeolite-bound FAU structure type zeolite having excellent mechanical strength and containing reduced amounts of zeolite P and the use of the zeolite-bound FAU structure type zeolites produced by the proces... | 02/26/2002 |
| 6350429 | Method for making molecular sieves and novel molecular sieve compositions This invention relates to the synthesis of large pore composite molecular sieves and to the synthetic large pore composite molecular sieves so produced. The molecular sieves of the invention have the same general utilities of the comparable molecular siev... | 02/26/2002 |
| 6299854 | Method of producing artificial zeolite The topic of the present invention is the development of a method of producing inexpensive artificial zeolite of the desired quality employing unused resources, such as descended pyroclastic materials, incineration ash, glass waste, diatomaceous earth was... | 10/09/2001 |
| 6258768 | Zeolite P aluminosilicates and their manufacture and use in detergent compositions P-type zeolite having the oxide formula M2/n Al2 O3 (1.8-2.66) SiO2 y H2O and having a Calcium Binding Capacity of between 100 and 145 mg/g, preferably between 110 and 140 and a Calcium uptake rate of between 12 and 100 se... | 07/10/2001 |
| 6187283 | Hydrothermal conversion of Y-zeolite using alkaline earth cations Hydrothermal synthesis of the natural, alkaline earth zeolites via the alteration of Y-zeolite is presented. Synthetic versions of the zeolites harmotome, heulandite, brewsterite and gmelinite are synthesized from Y-zeolite using alkaline earth cations co... | 02/13/2001 |
| 6103215 | Zeolite Me-UTD-1 An aluminosilicate zeolite is disclosed which has a silica/alumina mole ratio of about 500 or less and pores with at least one cross-sectional dimension greater than 7.5 Angstroms. Also disclosed is a zeolite comprising a first oxide selected from the gro... | 08/15/2000 |
| 6027708 | Process for the synthesis of flyash based zeolite-Y The present invention relates to a process for the synthesis of flyash based zeolite-Y (FAZ-Y), comprising grainding and mixing of flyash with caustic soda in a ratio ranging between 1:0.4-1:1.2 to obtain a fine homogenous fusion mixture, heating the said... | 02/22/2000 |
| 6004527 | Method for making molecular sieves and novel molecular sieve compositions This invention relates to the synthesis of large pore composite molecular sieves and to the synthetic large pore composite molecular sieves so produced. The molecular sieves of the invention have the same general utilties of the comparable molecular sieve... | 12/21/1999 |
| 5993642 | Hydrocarbon conversion process using a zeolite bound zeolite catalyst There is provided a process for converting hydrocarbons which utilizes a zeolite bound zeolite catalyst that has enhanced performance when utilized in hydrocarbon conversion processes, e.g., catalytic cracking, alkylation, disproportionation of toluene, i... | 11/30/1999 |
| 5976490 | Zeolite containing cation exchangers methods for preparation and use The present invention concerns zeolitic cation exchangers consisting of expanded ceramic, zeolitic pellets with macro- and microporosity, in the form of sintered, light, expanded clay aggregates which are partly transformed to zeolite by means of hydrothe... | 11/02/1999 |
