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| Number | Title | Issue Date |
| 7348293 | Homogeneous modified-alumina Fischer-Tropsch catalyst supports A homogeneous, amorphous catalyst support comprising a modifying-metal-oxide and a base-metal oxide, the catalyst support having a Surface to Bulk modifying-metal/base-metal atomic ratio of from about 0.6 to about 1.3 and exhibiting an X-ray diffraction having broad... | 03/25/2008 |
| 7341973 | Solid base catalyst and use thereof in base catalysis The present invention relates to solid base catalysts consisting of an amorphous material obtained from a silica or alumina gel containing an alkaline, earth-alkaline or transition metal (M), characterized by a molar ratio between metal (M) and Si or Al ranging from... | 03/11/2008 |
| 7329624 | Regenerable adsorbents for the purification of silicone based solvents An adsorbent for removal of impurities from silicone based solvents is presented. The adsorbent is regenerable for repeated use in cleaning silicone based solvents. ... | 02/12/2008 |
| 7276629 | Hydrogenation of imine intermediates of sertraline with catalysts Provided are hydrogenation processes of sertraline imine intermediates with catalysts in various reactors. ... | 10/02/2007 |
| 7244689 | Method of producing alumina-silica catalyst supports Alumina-silica catalyst supports having substantially high surfaces areas are formed by extrusion, drying and firing of a plasticized batch including an alumina-silica powder component, acid, organic binder and water. The alumina-silica powder component can be forme... | 07/17/2007 |
| 7172990 | Highly active spherical metal support catalysts The invention relates to highly active spherical metal support catalysts with a metal content of 10 to 70% by mass, and a process for their production with the use of a mixture of polysaccharides and at least one metal compound which is dropped into a metal salt sol... | 02/06/2007 |
| 7135429 | Attrition resistant carrier product The present invention is directed to an attrition resistant carrier product such as silica. Further, this invention is directed to the use of a binder to improve the attrition resistance or reduce the friability of a carrier product such as silica. In an embodiment,... | 11/14/2006 |
| 7067187 | Spherical porous ceramic body and method for producing the same A spherical porous ceramic body and the production method thereof are provided. As to the porous ceramic body, the total volume of the pores having a pore radius of from 1.8 nm to 100 μm is about 0.25 cm3/g or more, the mode of pore radius of the pores i... | 06/27/2006 |
| 7057010 | Process for the continuous drying of polymers containing N or amino, ammonium or spirobicyclic ammonium groups Process for the drying of polymers containing N or amino, ammonium or spirobicyclic ammonium groups, comprising cationic N-containing groups, and suitable counterions, in which the gelled and washed polymers obtained by polymerization, crosslinkage and optionally al... | 06/06/2006 |
| 6995112 | Highly homogeneous amorphous silica-alumina catalyst composition Silica-alumina catalyst compositions and to a process for converting hydrocarbonaceous feed using the catalyst are disclosed. The present invention relates to a highly homogeneous, amorphous silica-alumina cogel material, the attributes of which make it especially u... | 02/07/2006 |
| 6993934 | Dental glass powders Dental glass powders, methods for producing the powders and dental compositions including the glass powders. The powders preferably have a well-controlled particle size, narrow size distribution and a spherical morphology. The method includes forming the particles b... | 02/07/2006 |
| 6958375 | Chromium support-agglomerate-transition metal polymerization catalysts and processes utilizing same The present invention is directed to a novel one-step method for forming a supported catalyst complex of high activity by substantially simultaneously contacting a bidentate or tridentate ligand forming compound, a transition metal compound and a chromium immobilize... | 10/25/2005 |
| 6927261 | Method of making supported transition metal polymerization catalysts and compositions formed therefrom The present invention is directed to a novel one-step method for forming a supported catalyst complex of high activity by substantially simultaneously contacting a bidentate or tridentate ligand forming compound, a transition metal compound and a Lewis acid support-... | 08/09/2005 |
| 6908880 | Catalytic composition for the upgrading of hydrocarbons having boiling points within the naphtha range A process is described for the upgrading of hydrocarbon mixtures which boil within the naphtha range containing sulfur impurities, i.e. a hydrodesulfuration process with contemporaneous skeleton isomerization and reduced hydrogenation degree of the olefins contained... | 06/21/2005 |
| 6642172 | Extruded catalyst based on silica/alumina gel A catalyst in the form of extruded bodies is disclosed, which consists of an inert binding agent and a catalytically active phase of a silica/alumina gel. The catalyst is particularly active in acid-catalysed reactions.... | 11/04/2003 |
| 6600011 | Process for purification and drying of polymer hydrogels This invention relates to a method for purifying and drying a polymer hydrogel. This invention is based in part upon the discovery that rapid drying of polymer hydrogels can eliminate the problem of unacceptable levels of soluble oligomers caused by prolo... | 07/29/2003 |
| 6537442 | Cogel containing oxidic compounds of tetravalent, trivalent, and divalent metallic elements The invention pertains to a cogel comprising oxidic compounds of one or more trivalent metallic elements selected from the group of aluminum, borium, gallium, chromium, iron, cobalt, manganese, vanadium, molybdenum, tungsten, indium, rhodium, scandium, or... | 03/25/2003 |
| 6485702 | Stable synthetic material and method for preparing same A composition of matter is provided including an inorganic porous material having wall portions defining mesopore-sized channels having a mean diameter of between about 15 Å and about 100 Å and a narrow diameter distribution of less than or equal to abo... | 11/26/2002 |
| 6479004 | Silica-alumina carriers preparation, hydrogenation catalysts preparation therewith and their use for aromatics hydrogenation The present invention relates to a process for preparing silica-alumina carriers preferably under the form of extrudates. Further, the present invention also provides hydrogenation catalysts prepared thereof. These catalysts are used in an improved proces... | 11/12/2002 |
| 6432869 | Moldings including pyrogenic mixed oxide and the use thereof Moldings are disclosed for use as a catalyst or catalyst support for hydrating olefin, such as ethylene and propylene. The moldings are based on a pyrogenically produced mixed oxide having the following physicochemical parameters: External d... | 08/13/2002 |
| 6376421 | Ion exchanged aluminum-magnesium silicate or fluorinated magnesium silicate aerogels and catalyst supports therefrom Aluminum-magnesium silicate- or fluorinated magnesium silicate- aerogels which may be calcined, chemically modified, ion-exchanged, agglomerated, used as a component of a catalyst composition for an addition polymerization; supported versions thereof; and... | 04/23/2002 |
| 6331599 | Copolymer of ethylene and of at least one alpha-olefin and method for obtaining same Copolymer of ethylene and of at least one alpha-olefin obtained by means of a catalytic solid base on chromium oxide deposited on an inorganic support, the said copolymer having a melt flow index HLMI, measured in g/10 min, an amount of alpha-olefin Q, pr... | 12/18/2001 |
| 6329315 | Frangible, spray dried agglomerated supports, method of making such supports, and olefin polymerization catalysts supported thereon Frangible, spray dried agglomerate catalyst supports are provided, e.g. of silica gel, which possess a controlled morphology of microspheroidal shape, rough, scabrous appearance, and interstitial void spaces which penetrate the agglomerate surface and are... | 12/11/2001 |
| 6313061 | Method of making frangible spray dried agglomerated supports and olefin polymerization catalysts supported thereon A method of making frangible, spray dried agglomerate catalyst supports is provided, e.g. of silica gel, which possess a controlled morphology of microspheroidal shape, preferably a rough, scabrous appearance, and interstitial void spaces which penetrate ... | 11/06/2001 |
| 6306289 | Catalyst for hydrogenation treatment and method for hydrogenation treatment of hydrocarbon oil A hydrotreating catalyst having both a high desulfurization activity and a denitrogenation activity and a method of hydrotreating a hydrocarbon oil using the same is provided. A hydrotreatment catalyst comprising a silica-alumina carrier loaded with at le... | 10/23/2001 |
| 6267874 | Hydrotreating catalyst and processes for hydrotreating hydrocarbon oil with the same The present invention relates to a hydrotreating catalyst composed of a carrier having a Brønsted acid content of at least 50 μmol/g such as a silica-alumina carrier or a silica-alumina-third component carrier, in which the silica is dispersed to high d... | 07/31/2001 |
| 6235677 | Fischer-Tropsch processes using xerogel and aerogel catalysts by destabilizing aqueous colloids A process is disclosed for producing hydrocarbons by contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydro... | 05/22/2001 |
| 6218330 | Process for preparing and using a supported metallocene-alumoxane catalyst A process for the preparation of supported metallocene-alumoxane catalysts comprising the steps of: a) reacting a metallocene with an alumoxane at a temperature comprised between 15 and 50° C., b) recovering a mixture comprising an alkylmetallocenium cation a... | 04/17/2001 |
| 6121187 | Amorphous, microporous mixed oxide catalysts with controlled surface polarity for selective heterogeneous catalysis, adsorption and material separation The present invention relates to amorphous microporous mixed oxides, characterized by having, in dried form, a narrow pore size distribution (half width | 09/19/2000 |
| 6117400 | HC emission control member for exhaust gas An HC emission control member includes an HC adsorbing layer on a carrier and an HC oxidizing layer on the HC adsorbing layer. The hydrophobic property of the HC adsorbing layer is enhanced, so that satisfactory adsorption and desorption of HC could be ob... | 09/12/2000 |
| 6096674 | Heat-resistant HC adsorbent An HC adsorbent has an MFI-type metallo-silicate including at least one of gallium and indium as a framework forming element, and aluminum (Al) in the MFI-type metallo-silicate in a content of Alࣘ0.05% by weight. Such an HC adsorbent has an excellent he... | 08/01/2000 |
| 6074980 | Process for the preparation of a support for catalysts, catalyst for the polymerization of olefins and process for the polymerization of olefins by means of this catalyst Process for the manufacture of a support containing silica and at least one constituent chosen from alumina and aluminum phosphate, according to which an alcohol, water, a silicon alkoxide and an acid are mixed under conditions such that gelling or precip... | 06/13/2000 |
| 6042727 | Porous amorphous silica-alumina refractory oxides, their preparation and use as separation membranes A process for preparing a porous amorphous silica-alumina refractory oxide is described in which a source of silica, such as tetra ethyl ortho silicate, in a non-aqueous solvent, such as an alcohol, is hydrolysed by adding an aqueous solution containing a... | 03/28/2000 |
| 5944983 | Hydrotreating catalyst and hydrotreating process of hydrocarbon oil by using the same This invention relates to a hydrotreating catalyst for a hydrocarbon oil and also to a process for hydrotreating the hydrocarbon oil by using the catalyst. More specifically, the present invention is concerned with a hydrotreating catalyst formed by havin... | 08/31/1999 |
| 5888466 | Process for preparing amorphous, catalytically active silicoaluminas An amorphous, micro/mesoporous silica-alumina gel with controlled pore size, having a surface area of at least 500 m2 /g and with a molar ratio of SiO2 :Al2 O3 of at least 30:1, is prepared by hydrolysing and ca... | 03/30/1999 |
| 5879539 | Precious metal and silica-alumina based catalyst and hydroisomerisation treatment process for heavy feeds The invention concerns a catalyst for conversion of hydrocarbon feeds. The catalyst is essentially constituted by 0.05% to 10% by weight of a precious metal and a silica (5-70%)/alumina support with a specific surface area of 100-500m2 /g. The ... | 03/09/1999 |
| 5871646 | Porous amorphous silica-alumina refractory oxides, their preparation and use as separation membranes A process for preparing a porous amorphous silica-alumina refractory oxide is described in which a source of silica, such as tetra ethyl ortho silicate, in a non-aqueous solvent, such as an alcohol, is hydrolysed by adding an aqueous solution containing a... | 02/16/1999 |
| 5858320 | Process for preparing ultrafine aluminum silicate salt particles A process for preparing ultrafine aluminum silicate salt particles, said process comprising the steps of admixing a solution of aluminum chloride with water glass to form an aluminum silicate gel, adding a suspension of calcium and magnesium hydroxides in... | 01/12/1999 |
| 5798314 | Supported olefin polymerization catalyst A supported catalyst component for an olefin polymerization catalyst consisting essentially of a solid particulate support and a magnesium halide; and an olefin polymerization catalyst consisting essentially of a solid particulate support and a magnesium ... | 08/25/1998 |
| 5789336 | Micro-mesoporous gel and process for its preparation Micro-mesoporous gel consisting of a silica matrix possibly wherein one or more metal oxides selected from transition metals or metals belonging to groups IIIA, IVA and VA are uniformly dispersed, characterized by a monomodal porosity distribution.... | 08/04/1998 |
