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| Number | Title | Issue Date |
| 7390762 | Method for the preparation of high-content NaY molecular sieves synthesized from kaolin sprayed microspheres A method for synthesizing high-content NaY molecular sieves with kaolin sprayed microspheres includes adding functional components and deionized water into kaolin so as to be pulped into a mixed slurry. The slurry is sprayed into microspheres. The microspheres are c... | 06/24/2008 |
| 7232783 | Propylene oxide catalyst and use A process is provided for the production of a noble metal on TS-1 catalyst useful for the production of propylene oxide wherein TS-1 from hydrothermal crystallization has noble metal dispersed thereon, the resulting material is spray dried and template used in the c... | 06/19/2007 |
| 7229941 | Catalysts based on crystalline aluminosilicate A catalyst is described based on crystalline aluminosilicates of the pentasil type, characterized in that it is constructed from primary crystallites with an average diameter of at least 0.01 μm and less than 0.1 μm, that are combined to at least 20% to agglomerat... | 06/12/2007 |
| 7196029 | Process and catalysts for upgrading of hydrocarbons boiling in the naphtha range The present invention relates to the use of a catalytic system comprising a metal of group VIII, a metal of group VI, a metal oxide as carrier and suitable quantities of a component selected from a zeolite of the FER type, phosphorous, and a mixture thereof, in upgr... | 03/27/2007 |
| 6930067 | Process for the production of catalysts with improved accessibility The present invention is directed to a process for preparing a catalyst which comprises combining catalyst components or precursors thereof in an aqueous medium to form a catalyst precursor mixture, feeding the mixture to a shaping apparatus, and shaping the mixture... | 08/16/2005 |
| 6872865 | Selective disproportionation catalyst and process An improved catalytic composite and process are disclosed for the selective disproportionation of toluene. The process uses a layered composite comprising a catalytically active core which comprises a zeolitic aluminosilicate having a SiO2:Al2O... | 03/29/2005 |
| 6818333 | Thin zeolite membrane, its preparation and its use in separation Described is a supported zeolite membrane that consists of a zeolite/substrate composite layer that exhibits, in the n-butane/isobutane separation, a permeance of n-butane of at least 6.10−7 mol/m2.s.Pa and a selectivity of at least 250 at th... | 11/16/2004 |
| 6803337 | Catalytic composition for the upgrading of hydrocarbon mixtures The present invention relates to a catalytic composition which comprises a beta zeolite, a metal of group VIII, a metal of group VIB and optionally one or more oxides as carrier. The catalytic system of the present invention can be used for the hydrotreating of hydr... | 10/12/2004 |
| 6623848 | Water-absorbing polymers having interstitial compounds, a process for their production, and their use The invention relates to absorvents for water and aqueous liquids, which are vased on water-swell-able, yet water-insoluble polymers wherein cyclodextrin or cyclodextrin derivatives and zeolites high in silicon have been incorporated ionically, covalently... | 09/23/2003 |
| 6465382 | Process for producing spherical catalyst particles, catalyst particles and their use in a chemical synthesis Process for producing spherical catalyst particles containing a zeolite as active element, according to which a sol containing zeolite crystals and at least one gel-forming compound is sprayed from below directly into a reaction zone containing a reaction... | 10/15/2002 |
| 6197717 | Dehydrogenation catalyst and process A process and catalyst are provided for dehydrogenating a hydrocarbon feedstock and producing an olefinic product. The process comprises contacting the feedstock at dehydrogenation conditions with a dehydrogenation catalyst comprising from about 0.01 weig... | 03/06/2001 |
| 6093672 | Noble metal hydrocracking catalysts A noble metal hydrocracking catalyst which has high selectivity for naphtha range products is provided. The hydrocracking catalyst comprises: a) from about 70 to about 90 weight percent of a Y zeolite, based on the catalyst having a silica to alumina mole rati... | 07/25/2000 |
| 6080805 | Polymer modifying agent A polymer modifying agent for use in increasing the shelf life of natural rubber. The polymer modifying agent consists of a zeolite, a high molecular weight fatty acid, a starch, a catalyst, and rubber processing oil and aliphatic resin. The compound bond... | 06/27/2000 |
| 5855863 | Zeolite L preparation Binderless particles of zeolite L of very high mechanical strength are prepared by a process which comprises forming a mixture by reacting substantially binderless particles of zeolite L, preferably as shaped particles such as extrudates, with an aqueous ... | 01/05/1999 |
| 5744674 | Catalyst and process for the conversion of heavy aromatics to light aromatics A catalyst for the preparation of benzene, toluene and xylene from C9+ heavy aromatics consists of zeolite ZSM-5 and γ- or η-Al2 O3 as carrier, Re, Sn and Pt or Pd supported on the carrier. Under the condition... | 04/28/1998 |
| 5714133 | Crystalline aluminosilicate zeolite syntheses The invention relates to an improvement in the method for synthesis of crystalline aluminosilicate zeolites, such as ZSM-10, whose synthesis requires or is improved by one or more periods of gel aging. The gel aging step is replaced by a continuous increa... | 02/03/1998 |
| 5665325 | Process for producing substantially binder-free zeolite Silica-bound extruded zeolites may be converted into binder-free zeolite aggregates by aging the zeolite in an aqueous ionic solution which contains hydroxy ions such that the initial molar ratio of OH- :SiO2 is up to 1.2 and which c... | 09/09/1997 |
| 5624656 | Zeolite L preparation Binderless zeolite L particles are prepared by a method in which particles are formed from silica and from 0 to 95 wt % preformed zeolite L crystallites, and the particles are thereafter reacted with an alkaline solution comprising a source of alumina to ... | 04/29/1997 |
| 5500199 | Bonded zeolites and process for preparing them Zeolites having a pore diameter comprised within the range of from 5 to 12 Å are bonded with amorphous oligomeric silica, by dispersing them in an aqueous solution of silica and alkylammonium hydroxide, and submitting the obtained suspension to a quick d... | 03/19/1996 |
| 5486348 | Zeolite L preparation Binderless zeolite L particles are prepared by a method in which particles are formed from silica and from 0 to 95 wt % preformed zeolite L crystallites, and the particles are thereafter reacted with an alkaline solution comprising a source of alumina to ... | 01/23/1996 |
| 5445876 | Vapor exchange medium A vapor exchange medium comprises a multiplicity of porous desiccant particles and a binder holding the particles together to form a solid shape. The binder includes a multiplicity of substantially spherical, covalently-bonded silica particles derived fro... | 08/29/1995 |
| 5365002 | Crystalline zeolite-like gallosilicate, and method for its synthesis The invention relates to a crystalline zeolite-like gallosilicate having an atomic ratio of Si/Ga in the outer crystalline surface that is not larger than the average Si/Ga ratio for the whole of the crystal. The invention also relates to a method of maki... | 11/15/1994 |
| 5362696 | Process for producing spherical zeolite catalyst and apparatus for producing the same A process for producing a spherical zeolite catalyst is disclosed, which comprises dropping a zeolite-containing alumina sol into a surfactant-containing oil phase from a dropping opening directly or through air to thereby form spherical droplets of the s... | 11/08/1994 |
| 5187132 | Preparation of borosilicate zeolites A method for synthesizing crystalline zeolites requiring a reaction mixture for crystallization thereof which contains Boron Beta Zeolite as an active source of silicon oxide and boron oxide.... | 02/16/1993 |
| 5098448 | Process for the production of molecular sieve granulates A process for the production of silica-bound zeolite granulates is disclosed, wherein zeolite to be formed into a granulate is mixed with silica sol. The process is carried out by adding aqueous alkali metal silicate to the silica sol immediately before t... | 03/24/1992 |
| 5011667 | Self-bound sodium chabazite aggregates and methods for preparation thereof A process for making self-bound monolithic bodies of chabazite by mixing finely divided chabazite and a sodium aluminosilicate gel into monolithic bodies, the gel having a molar ratio of silica to aluminum between 1.0 and 1.5 and a molar ratio of sodium t... | 04/30/1991 |
| 4987110 | Attrition resistant cracking catalyst An attrition resistant catalytic cracking catalyst is prepared by spray drying an aqueous slurry containing a molecular sieve having cracking activity, a clay such as kaolin, a silica sol and aluminum chlorhydroxide. The resultant catalyst has a high attr... | 01/22/1991 |
| 4886769 | Active gas adsorbing element and method of manufacturing An element for adsorbing one or more active gases in an inert gas to obtain an inert gas such as air containing an inert gas such as air containing an ultra-low concentration active gas such as water vapor. The element is produced by laminating low densit... | 12/12/1989 |
| 4875991 | Two-catalyst hydrocracking process Disclosed is a hydrocracking process wherein the feedstock is contacted in a first reaction zone with a first reaction zone catalyst comprising a nickel component and a tungsten component deposed on a support component consisting essentially of an alumina... | 10/24/1989 |
| 4861740 | Magnesium-exchanged zeolitic catalyst for isomerization of alkylaromatics An isomerization catalyst is prepared by a novel method of incorporating magnesium into a crystalline aluminosilicate. The catalyst comprises an alumina matrix, a magnesium-containing zeolite, and a Group VIII metal component. It has been found that the m... | 08/29/1989 |
| 4849387 | Catalyst for the selective decomposition of cumene hydroperoxide and process using it The present invention relates to a catalyst for the selective decomposition of cumene hydroperoxide, composed of zeolite crystals wherein a portion of the silicon atoms in the crystal lattice of silica is replaced by Al and B. The zeolite crystals are bon... | 07/18/1989 |
| 4743573 | Catalyst for the selective decomposition of cumene hydroperoxide The present invention relates to a catalyst for the selective decomposition of cumene hydroperoxide, composed of zeolite crystals wherein a portion of the silicon atoms in the crystal lattice of silica is replaced by Al and B. The zeolite crystals are bon... | 05/10/1988 |
| 4629717 | Phosphorus-modified alumina composite, method of manufacture and use thereof A novel phosphorus-modified alumina composite comprising a hydrogel having a molar ratio on an elemental basis of phosphorus to aluminum of from 1:1 to 1:100 together with a surface area of about 140 to 450 m2 /gm is defined. The composite is p... | 12/16/1986 |
| 4620399 | Zeolite granulate, process for its production and use According to the invention there are produced sodium Zeolite A granulates having the following parameters: The zeolite granulate is produced by having zeolite A powder present in a mixer, adding alkali silicate solution, mixing until there are obtained ze... | 11/04/1986 |
| 4601992 | Product and process for the production of granules of high mechanical strength and containing molecular sieve Disclosed is a product and process for the production of granules of high mechanical strength comprising mixing a molecular sieve and a metal oxide into a paste with a silicate, shaping the paste into granules, subjecting the shaped granules to an exchang... | 07/22/1986 |
| 4556549 | Process for making zeolite ZSM-45 with an organocobalt complex This invention relates to a method for preparing a synthetic porous crystalline aluminosilicate zeolite, characterized as zeolite ZSM-45. This crystalline material may have a molar ratio of silica to alumina of at least 8. This synthetic zeolite is analog... | 12/03/1985 |
| 4542115 | Zeolite granulate, process for its production According to the invention there are produced sodium Zeolite A granulates having the following parameters: The zeolite granulate is produced by having zeolite A powder present in a mixer, adding alkali silicate solution, mixing until there are obtained ze... | 09/17/1985 |
| 4537866 | Method of preparing silicate composition A method of preparing a silica-containing composition from a lithium silicate sol is disclosed. The compositions are prepared by heating shaped particles of lithium silicate sol to a temperature of about 70° C. or more in the absence of a gelling agent a... | 08/27/1985 |
| 4508840 | Method of preparing a high-density cracking catalyst with reduced sulfur emissions from coke Preparation of the silica and alumina matrix components of a zeolite cracking catalyst while intimately mixing at a pH of 3.0 to about 4.5 results in a selective catalyst of high density and low pore volume. The coke produced during cracking emits lower a... | 04/02/1985 |
| 4427577 | Composite zeolite Catalyst compositions comprising a core of silica with an overlying modified-silica zeolite, preferably containing aluminium, gallium or boron, show improved catalytic activity. The composites are prepared by introducing preformed silica particles, prefer... | 01/24/1984 |
