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Patent Searching and Data


Matches 601 - 650 out of 5,542

Document Document Title
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 ...  
WO/2002/085508A2
A process for regenerating a slurry Fischer-Tropsch catalyst (26), which needs regeneration, involves de-waxing and drying the catalyst sufficiently to produce a free-flowing catalyst powder (36) that is fluidizable; fluidizing the catal...  
WO/2002/085828A1
A method for regenerating deactivated sulfonated cation exchange catalysts comprises washing the deactivated catalyst with phenol-water mixtures comprising about 5-20 wt.% of water in phenol at a temperature of about 70-95°C.  
WO/2002/086019A2
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/2002/083818A2
The present invention is directed to a method of desulfurization of a sulfur laden hydrocarbon liquid that comprises contacting the liquid with a sponge nickel metal alloy, removing the sulfur free liquid, regeneration of the alloy by co...  
WO2002057837A3
The invention provides tinted contact lenses, and methods for their manufacture, that alter the natural color of the lens wearer's iris. The lenses use a base layer of translucent color having a clear central zone and a translucent color...  
WO/2002/079171A1
The present invention relates to enhancement of the cycle life of a zinc chromium based catalyst used in the synthesis of 2-methylpyrazine by increasing the reaction temperature step-wise, starting from a low temperature, while monitorin...  
WO2001021733A9
The sulfur content of liquid cracking products, especially the cracked gasoline, of a catalytic cracking process is reduced by the use of a catalyst having a product sulfur reduction component containing a metal component in an oxidation...  
WO/2002/076885A2
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°C, to maximum temperature 850°C, a controlled reaction can be ...  
WO/2002/076919A1
A method for extremely easily, inexpensively, and efficiently using, recovering, and recycling a soluble metallic catalyst in various liquid-phase reactions. A liquid-phase reaction to be catalyzed by a soluble metallic catalyst is condu...  
WO/2002/076600A1
A process for rejuvenating reversibly deactivated catalyst particles in a three-phase slurry body (22) of gas bubbles and catalyst particles in a slurry liquid, includes passing slurry from the top down to the bottom of the body through ...  
WO/2002/072255A1
A method for regenerating a solid catalyst having been used for producing propylene oxide through an epoxidation reaction of propylene with an organic peroxide in a reactor packed with a solid catalyst, which comprises allowing a liquid ...  

Matches 601 - 650 out of 5,542