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Patent Searching and Data


Matches 601 - 650 out of 5,548

Document Document Title
WO/2003/053580A1
Catalysts such as antimony halides can be used during fluorination reactions involving hydrogen fluoride. Said catalysts can be reduced during the reaction. Oxidation is usually carried out by introducing elementary halogen, preferably c...  
WO/2003/053578A1
The invention relates to a method for regenerating chemically inert, thermally pre-treated metal oxides with an increased number of organoaluminium co-reactive groups on their surface, without producing by-products that deactivate cataly...  
WO/2003/051510A2
The granular, shape-selective zeolite catalyst used as a bulk material in a reactor for producing lower olefins on the basis of a mixture of higher olefins has to be decoked from time to time. For this purpose, the reactor is scavenged w...  
WO/2003/047748A1
A supported catalyst comprising one or more metal oxides as active components on a catalyst support for carrying out an aldol condensation is disclosed. The catalyst support is $g(g) aluminium oxide, the active component is one or more o...  
WO2001058842A9
Fatty alcohol and other organics are extracted from spent copper chromite catalyst by a mixture comprising from 50 to 99 % by weight based on the total weight of organic solvent of a water miscible solvent such as isopropanol, 1 to 50 % ...  
WO/2003/046112A1
A composition for controlling No¿x? emission during FCC processes comprises (i) an acidic oxide support, (ii) cerium oxide, (iii) a lanthanide oxide other than ceria such as praseodymium oxide, and (iv), optionally, an oxide of a metal ...  
WO2002053283A9
Disclosed is a method of rejuvenating molecular sieve and molecular sieve catalyst. The method includes freeze drying a molecular sieve having a methanol conversion ratio of less than 1, or a caalyst containing molecular sieve and a bind...  
WO/2003/041860A2
An in situ process for conducting regeneration of spent hydrocarbon synthesis catalyst. Regenerated, but not yet re-activated, catalyst (15) may be introduced into an operating HCS reactor (1) that has catalyst rejuvenation means (14). A...  
WO/2003/040268A1
Disclosed is a method for the production of fuel from acid, vegetable or animal fats containing free fatty acids in catalytic esterification reactions. Said method is characterized in that the fatty acids contained in the acid fats are e...  
WO/2003/035258A1
A method by which a solid catalyst used in the production of a perfluoroalkyl iodide telomer or the like can be efficiently and continuously recovered and continuously recycled to the reaction system for reuse. The method comprises drawi...  
WO2003011919A3
A polymerisation method with improved productivity, using a co-ordination catalyst, whereby electromagnetic radiation is applied during the polymerisation. The activity of the co-ordination catalyst is greatly enhanced by the irradiation...  
WO/2003/028882A1
According to one aspect of the invention, there is provided a process in which a zeolite acts as a catalyst and/or catalyst precursor, carried out in a reaction medium comprising an organic ionic liquid medium, for example an acylation, ...  
WO/2003/028883A1
Disclosed is a catalyst composition based on an indium salt and an organic ionic liquid, a process for making the catalyst composition, and uses thereof. The catalyst composition is particularly suitable for Lewis acid catalysed electrop...  
WO2002041826A3
The invention relates to phase transfers of nanoparticles and to a catalysis using said nanoparticles. The aim of the invention is to facilitate a transfer of nanoparticles from an organic solution to an inorganic, especially, aqueous so...  
WO2002057393A8
The present invention provides a method of producing a synthesis gas from a regeneration of spent cracking catalyst. The method includes introducing a spent cracking catalyst into a first regeneration zone I a presence of a first oxygen ...  
WO2002102508A3
A catalyst for use in the production of a lower aliphatic carboxylic acid ester by reacting a lower olefin and a lower aliphatic acid ester in a gas phase, which catalyst has been decreased in activity through use, is regenerated by heat...  
WO2002053283B1
Disclosed is a method of rejuvenating molecular sieve and molecular sieve catalyst. The method includes freeze drying a molecular sieve having a methanol conversion ratio of less than 1, or a caalyst containing molecular sieve and a bind...  
WO/2003/020406A2
The present invention integrates a gasification unit (2) into a catalyst/absorber process for removing pollutants from the combustion product of a gas turbine (8). A small slipstream of syngas from the gasification unit (2) is cleaned in...  
WO/2003/018182A2
Improved methods for conduction solid acid-catalyzed, near- or supercritical heterogeneous chemical reactions (e.g., alkylation reactions) are provided which give enhanced product yields and permit longer processing runs. The preferred r...  
WO/2003/018972A1
An exhaust gas purification system for an internal combustion engine (1) is provided which comprises a Nox trap catalyst (13) and an air/fuel ratio controller (20) for controlling the exhaust gas purification system so that an exhaust ai...  
WO/2003/018528A1
The invention relates to a method for separating impurities and for producing diarylcarbonate that is substantially devoid of adducts from reaction solutions containing diarylcarbonate, by means of solution crystallisation. Said method p...  
WO2003002251A3
A process for preparing a fluorination catalyst using a low pressure activating step followed by a high pressure activating step.  
WO2003000826A3
The present invention features a system and method for circulating catalyst between a reactor system (10) and a regenerator system (34) and a distribution unit (5). The system and method are adapted so that more than one regeneration gas...  
WO2002076885A3
A molybdenum carbide compound is formed by reacting a molybdate with a mixture of hydrogen and carbon monoxide. By heating the molybdate powder from a temperature below 300 DEG C, to maximum temperature 850 DEG C, a controlled reaction c...  
WO2002096848A3
The present invention relates to a continuous hydroformylation process for the production of an aldehyde by hydroformylation of an olefin which comprises: providing a hydroformylation zone containing a charge of a liquid reaction medium ...  
WO2002092726A3
A process for the catalytic oxidation of sulfur and nitrogen contaminants as well as unsaturated compounds present in a hydrocarbon fossil oil medium is described, the process comprising effecting the oxidation in the presence of at leas...  
WO2002085527A3
Cyclone separator provided with an inlet for receiving gas and solid particles, a gas outlet at its upper end and a lower tubular part, wherein the lower tubular part is provided with a closed lower end, through which closed lower end a ...  
WO/2003/011919A2
A polymerisation method with improved productivity, using a co-ordination catalyst, whereby electromagnetic radiation is applied during the polymerisation. The activity of the co-ordination catalyst is greatly enhanced by the irradiation...  
WO/2003/011753A1
The invention relates to a method for the separation of an aqueous reaction mixture arising in the production of hydroxylamine using a catalyst, which contains, amongst other things, solid catalyst particles, into a partial stream enrich...  
WO/2003/010346A2
A process is disclosed for recovering platinum group metals from a spent catalytic member, and in particular, from a catalytic converter from an automobile. The process comprises comprising introducing the catalytic member (10) into a re...  
WO/2003/006160A1
The present invention provides a process for regenerating a spent aromatics alkylation or transalkylation catalyst comprising a molecular sieve by contacting the spent catalyst with an oxygen-containing gas at a temperature of about 120 ...  
WO/2003/006578A2
The sulfur content of liquid cracking products, especially the cracked gasoline, is reduced in a catalytic cracking process employing a cracking catalyst containing a high content of vanadium. The cracking process involves introducing at...  
WO2002086019A3
Fluid catalytic reactor vessel comprising: at its upper end a single centrally positioned primary cyclone having a gas-solids inlet fluidly connected to the downstream end of a fluid catalytic riser, which riser is positioned externally ...  
WO/2003/002251A2
A process for preparing a fluorination catalyst using a low pressure activating step followed by a high pressure activating step.  
WO/2003/000399A2
A reactor and regeneration for effecting radial flow contact of a reactant stream with catalyst particles movable as an annular-form bed by gravity flow and for reducing stresses in the bed is disclosed.  
WO/2003/000826A2
The present invention features a system and method for circulating catalyst between a reactor system (10) and a regenerator system (34) and a distribution unit (5). The system and method are adapted so that more than one regeneration gas...  
WO/2002/102512A1
The invention relates to the regeneration of a catalyst that reduces nitrogen oxide, in particular to the regeneration of an SCR catalyst. According to the invention, the catalyst is treated with a solution containing fluoride and/or sul...  
WO/2002/102508A2
A catalyst for use in the production of a lower aliphatic carboxylic acid ester by reacting a lower olefin and a lower aliphatic acid ester in a gas phase, which catalyst has been decreased in activity through use, is regenerated by heat...  
WO/2002/100984A1
A baffle-style stripping arrangement for an FCC process having substantially horizontal stripping baffles is disclosed. The stripping baffles comprise a perforated section and an imperforate section which generates transverse movement of...  
WO/2002/098935A1
The invention relates to copolymers which can be produced from at least one $g(a)-olefin monomer and one functional monomer while using a coordination catalyst, whereby the catalyst and/or the monomer are/is irradiated with electromagnet...  
WO/2002/098934A1
The invention relates to a method for preventing the deactivation of co-ordination catalysts and/or for reactivating deactivated co-ordination catalysts by irradiation with electromagnetic radiation.  
WO/2002/096847A1
The present invention relates to a process for preparing bisphenols which comprises reacting a carbonyl compound containing at least two carbon atoms with an aromatic compound, containing a hydroxyl group and at least one hydrogen atom b...  
WO/2002/096555A1
The present invention relates to a process for recovery of homogeneous metal hydride catalyst from a reactor stream as catalyst suitable for recycle to a reactor comprising the steps of: removing a stream from a reactor, said stream comp...  
WO/2002/096848A2
The present invention relates to a continuous hydroformylation process for the production of an aldehyde by hydroformylation of an olefin which comprises: providing a hydroformylation zone containing a charge of a liquid reaction medium ...  
WO/2002/094433A1
A process is provided for treating a basic metal oxide olefin isomerization catalyst, such as magnesium oxide. The catalyst is activated by contact with a deoxygenated nitrogen containing not more than 5 ppm molecular oxygen by volume un...  
WO/2002/092726A2
A process for the catalytic oxidation of sulfur and nitrogen contaminants as well as unsaturated compounds present in a hydrocarbon fossil oil medium is described, the process comprising effecting the oxidation in the presence of at leas...  
WO/2002/092227A1
A process is disclosed for regenerating a catalyst (60) used in a process for synthesizing hydrocarbons (40). The synthesis process involves contacting a feed stream (10) comprising hydrogen and carbon monoxide with a catalyst (50) in a ...  
WO/2002/092541A1
Disclosed is a method for converting an oxygenate feedstock to an olefin product. In particular, the method incorporates the use of a silicoaluminophosphate molecular sieve catalyst in the manufacture of ethylene and propylene. The metho...  
WO/2002/090302A1
A selective acetylene hydrogenation process which is able to produce a high quality diolefin having extremely low levels of acetylene over an extended period of time compared with the prior art. The process of the present invention provi...  
WO/2002/085527A2
Cyclone separator provided with an inlet for receiving gas and solid particles, a gas outlet at its upper end and a lower tubular part, wherein the lower tubular part is provided with a closed lower end, through which closed lower end a ...  

Matches 601 - 650 out of 5,548