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| Number | Title | Issue Date |
| 4247416 | Crystalline zeolite ZSM-25 A new crystalline zeolite, designated "ZSM-25", a method of making the zeolite and using the zeolite in catalytic conversion of hydrocarbons, is the subject of this application. The new zeolite has a composition in the anhydrous state expressed in terms o... | 01/27/1981 |
| 4235753 | Zeolitized composite bodies and manufacture thereof An improved process for the production of mechanically strong shaped crystalline zeolitic aluminosilicate bodies from precursor bodies composed of kaolin clay calcined at elevated temperature, the crystallized bodies having essentially the same size and s... | 11/25/1980 |
| 4235754 | Cracking catalyst A metal combustion promoter is introduced to the circulating inventory of catalyst in a catalytic cracking unit as a mixture of particles rich in metal with particles free of metal such that the net concentration of metal in the mixture is about 1 to 10 p... | 11/25/1980 |
| 4206085 | Balanced alumina matrix in zeolite containing catalyst This invention relates to an improvement in the abrasion resistance of catalysts formulated from a mixture of an exchanged zeolite of the faujasite type, hydrated alumina and ammonium polysilicate or silica sol.... | 06/03/1980 |
| 4198319 | Method of producing zeolitic catalysts with silica alumina matrix This invention relates to zeolitic catalysts composed of an exchanged zeolite of the faujasite type and a matrix composed of clay and an alumina-silica component.... | 04/15/1980 |
| 4192773 | Oxygen absorbent An oxygen absorbent comprising (a) metal halide-coated metal powder having at least one metal halide coated on the surface of at least one metal powder, the amount of metal halide coated being in the range of from about 0.001 part to about 10 parts by wei... | 03/11/1980 |
| 4175059 | Method of preparing a novel platelet-type crystalline form of synthetic faujasite A process for preparing a synthetic faujasite having a novel platelet-type crystalline shape and a silica to alumina ratio above 2.2 by adding potassium ions to a seeded faujasite synthesis slurry and heating to convert to the synthetic faujasite. The use... | 11/20/1979 |
| 4157375 | Conversion of nitrogen oxides Zeolite catalyzed reduction of nitrogen oxides in exhaust gases is conducted with catalytic elements in the form of multi-channel structures in which parallel channels are defined by thin walls constituted by refractory oxides having zeolite dispersed the... | 06/05/1979 |
| 4151121 | Hydrocarbon conversion catalyst containing a co-oxidation promoter A cracking catalyst for promoting the oxidation of carbon monoxide to carbon dioxide during regeneration of the catalyst by the burning of coke therefrom, which comprises a crystalline aluminosilicate zeolite, an inorganic porous oxide matrix material and... | 04/24/1979 |
| 4144194 | Zeolite promoted hydrocarbon conversion catalysts A zeolite promoted hydrocarbon conversion catalyst prepared by combining Y-type zeolite and a silicate containing mother liquor obtained as a by-product in the preparation of Y-type zeolite with clay and inorganic amorphous matrix forming components. The ... | 03/13/1979 |
| 4126579 | Hydrocarbon conversion catalyst manufacture A process for preparing a silica gel bound zeolite containing catalyst by preparing an acidic silica sol and alkaline zeolite slurry feed streams, rapidly and homogeneously mixing the streams to form a rapidly gelling mixture, and spraying the mixture to ... | 11/21/1978 |
| 4124487 | Process for reforming and dewaxing by selective hydrocracking of hydrocarbon fractions The process for selective hydrocracking of hydrocarbon fractions consists in that hydrocarbon fractions are contacted with hydrogen at a respective molar ratio of 1:2.5-20, a temperature of 280° - 520° C., and a pressure of 15 - 100 kgf/cm2 o... | 11/07/1978 |
| 4110255 | Beverage carbonation device A rigid composite body containing crystalline molecular sieves and having liquid-permeable channels extending in a substantially vertical direction from one surface of said body to the interior thereof, preferably to an opposite surface, is charged with c... | 08/29/1978 |
| 4107088 | Copolymerized silica hydrosol bound cracking catalysts A process for modifying the silica hydrosol used to bind zeolite clay catalysts by adding salts of titania, zirconia, iron or ceria to the silica hydrosol in the course of preparation is disclosed. This addition alters the physical characteristics of cata... | 08/15/1978 |
| 4097410 | Hydrocarbon conversion catalyst containing a CO oxidation promoter A cracking catalyst for promoting the oxidation of carbon monoxide to carbon dioxide during regeneration of the catalyst by the burning of coke therefrom, comprises two distinct crystalline aluminosilicate zeolite particles embedded in an inorganic porous... | 06/27/1978 |
| 4086187 | Attrition resistant zeolitic catalyst Attrition resistant zeolitic catalysts containing silica, alumina and clay components.... | 04/25/1978 |
| 4085069 | Hydrothermally stable catalysts containing ammonium faujasite zeolites Catalysts containing a matrix and an ammonium zeolite of the faujasite type produced by exchanging the zeolite whose exchange sites are substantially entirely occupied by Na cations, with an ammonium salt solution to exchange substantially all of the Na c... | 04/18/1978 |
| 4079019 | Process for preparing zeolite containing hydrocarbon conversion catalysts Attrition resistant and stable catalyst composition comprising crystalline aluminosilicate zeolites e.g. rare earth exchanged zeolites dispersed in an inorganic matrix containing synthetic amorphous silica-alumina and clay are prepared by a process which ... | 03/14/1978 |
| 4069172 | Adsorbent for aromatic hydrocarbon mixture separation An adsorbent for separating para-isomers from C8 or C10 aromatic hydrocarbons, specifically, a faujasite zeolite wherein about 2.5 to 25 percent, based on the total exchangeable cation sites originally present within the faujasite ze... | 01/17/1978 |
| 4036739 | Catalytic cracking process using ammonia-stable zeolite catalyst Highly active, hydrothermally stable and ammonia-stable Y zeolite compositions are disclosed, which compositions are useful as adsorbents, hydrocarbon conversion catalysts, and as acidic supports for catalytic metals. The stabilized Y zeolite composition ... | 07/19/1977 |
| 4036782 | Granulated zeolite catalyst and process for producing the catalyst A granulated zeolite catalyst which contains cations of metals of Group II of the periodic system with an exchange degree of from 5 to 50% of the theoretical value, hydrogen groups with an exchange degree of from 5 to 50% of the theoretical value, and at ... | 07/19/1977 |
| 4022714 | Silica hydrosol bound cracking catalysts A process for modifying the silica hydrosol used to bind zeolite clay catalysts by adding salts of titania, zirconia, iron or ceria to the silica hydrosol in the course of preparation is disclosed. This addition alters the physical characteristics of cata... | 05/10/1977 |
| 4010116 | Fluid cracking catalysts This invention relates to a high-activity catalyst of improved thermal stability employing a zeolite of the faujasite type, pseudoboehmite alumina gel and a synthetic mica-montmorillonite and may also include a clay.... | 03/01/1977 |
| 4007134 | Beverage carbonation device A rigid composite body containing crystalline molecular sieves and having liquid-permeable channels extending in a substantially vertical direction from one surface of said body to the interior thereof, preferably to an opposite surface, is charged with c... | 02/08/1977 |
| 3994800 | Catalytic cracking with catalyst of improved Y zeolite A process for cracking hydrocarbon feedstocks by contacting such stocks under cracking conditions with a composite catalyst comprising an improved hydrogen exchanged Y-type zeolite component and an amorphous inorganic matrix component. The use of this cat... | 11/30/1976 |
| 3985640 | Cracking with zeolite catalysts promoted with uranium or uranium plus silver Uranium oxide or uranium and silver oxides in combination with hydrogen or rare earth oxides are exchanged into zeolites as components of zeolite cracking catalysts to increase the olefin content of the gasoline and, thus, enhance the yield of high octane... | 10/12/1976 |
| 3979335 | Process for the preparation of synthetic zeolites A process for the preparation of synthetic zeolites comprising mixing zeolite powder of a particle size not exceeding 5 mcm with a natural binder of a particle size of 250-500 A. The resulting mixture is wetted with water and pelletized, the pellets thus ... | 09/07/1976 |
| 3976598 | Zeolite synthesis Process for synthesizing crystalline aluminosilicates of the molecular sieve type wherein smectite which has undergone fusion with sodium chloride is employed as a source of silica and alumina.... | 08/24/1976 |
| 3972835 | Fluid cracking catalyst based on silica sol matrix A process for preparing a hydrocarbon cracking catalyst is disclosed. The process consists of preparing a silica sol by passing sodium silicate through an ion exchange resin column to form a silica sol containing about 5% silica. Clay and zeolitic compone... | 08/03/1976 |
| 3963644 | Conversion catalysts Hydrocracking catalysts are disclosed consisting essentially of a physical, particle-form mixture of (1) a crystalline alumino-silicate component having a sodium content of less than 4 percent by weight, and (2) a hydrogenation component comprising a pred... | 06/15/1976 |
| 3957689 | Process for preparing an attrition resistant zeolite hydrocarbon conversion catalyst A process for preparing a hydrocarbon cracking catalyst which consists of preparing a silica hydrosol, adjusting the pH of the sol and at the same time buffering the sol by adding an aluminum sulfate solution, adding clay and zeolitic components, spray dr... | 05/18/1976 |
| 3939058 | Method for fluid cracking with a composite catalyst A crystalline aluminosilicate zeolite catalyst made by a process comprising the steps of exchanging the zeolite, heating it, compositing the resulting product with a porous matrix and reexchanging the composite product is provided. The invention also prov... | 02/17/1976 |
| 3932268 | Hydrocarbon conversion process A process for the catalytic cracking of hydrocarbons to produce gasoline wherein the hydrocarbon charge is contacted under fluid cracking conditions with a fluid catalyst composition comprising ion-exchanged synthetic crystalline faujasite and an amorphou... | 01/13/1976 |