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WO/2006/009571A1 |
A process is disclosed that relates to the recovery of a metal catalyst from an oxidizer purge stream produced in the synthesis of carboxylic acid, typically terephthalic. More particularly, the process involves recovery of a metal catal...
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WO/2006/009662A2 |
A method for recovering and reusing a ring-halogenation catalyst comprises: (A) contacting an aromatic compound with chlorine or bromine in the presence of a catalyst composition, where the catalyst composition comprises at least one sal...
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WO/2005/118514A1 |
A process for alkylating a feed aromatic with an olefin is disclosed which integrates on-stream and off-stream alkylation reactors with on-stream and off-stream aromatic byproducts removal zones to make efficient use of the feed aromatic.
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WO/2005/118137A1 |
A method for preparing a catalyst comprising a metal having absorbed therein hydrogen; wherein the metal is selected from at least one of gold, iron, ruthenium, or molybdenum; the method comprising the steps: (i) exposing a sample compri...
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WO/2005/113146A1 |
New methods for activating chromium catalysts for polymerization processes decrease the amount of time required for activation and increase catalyst activity. Rapid heating to a first temperature is followed by a first hold period before...
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WO/2005/107945A1 |
A process for the removal of corrosion metal contaminants from a carbonylation catalyst solution comprising an iridium and/or rhodium carbonylation catalyst, an alkali and/or alkaline earth metal and corrosion metal contaminants in which...
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WO/2005/104786A2 |
A fixed bed hydroprocessing system, and also a method for upgrading a pre-existing fixed bed hydroprocessing system, involves preliminarily upgrading a heavy oil feedstock in one or more slurry phase reactors using a colloidal or molecul...
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WO/2005/105956A1 |
This invention provides an integrated system and process for forming light olefins and polymers from oxygenates, and optionally from natural gas. The integrated system includes an air separation unit, which separates air components into ...
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WO/2005/105714A1 |
A process for obtaining a reaction gas containing (meth)acrylic acid or (meth)acrolein through the steps of feeding propylene, propane or isobutylene and a gas containing molecular oxygen into a reactor loaded with a catalyst and carryin...
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WO/2005/104749A2 |
Methods and systems for hydroprocessing heavy oil feedstocks to form an upgraded material involve the use of a colloidal or molecular catalyst dispersed within a heavy oil feedstock, a hydrocracking reactor, and a hot separator. The coll...
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WO/2005/089923A1 |
A method of servicing a catalytic reactor system, comprising an abatement of at least one hazardous substance from the catalytic reactor system while preserving activity of a catalyst contained therein. A method of servicing a catalytic ...
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WO/2005/087375A1 |
A method for recovering a wash coat carrying a noble metal component from a catalyst device having a metal carrier, which comprises treating the catalyst device having a metal carrier provided with a wash coat and, carried thereon, a cat...
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WO/2005/082517A1 |
The invention relates to a method for the removal of carbonaceous residues in a reactor containing a solid catalyst for the catalytic gas-phase oxidation of unsaturated hydrocarbons, whereby the deposited carbonaceous residues are brough...
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WO/2005/082528A1 |
Disclosed is a catalyst structure (21) which enables to stably obtain a carbon nanotube having a desired shape and a long fiber length at high purity. Also disclosed is a method for producing a carbon nanotube (24) using the catalyst str...
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WO/2005/082529A1 |
Used noble metal-containing titanium zeolite catalysts, that have been employed in the liquid-phase epoxidation of olefins with hydrogen and oxygen in the presence of a buffer, are regenerated by heating the used catalyst at a temperatur...
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WO/2005/079983A1 |
A method for obtaining a material containing recovered molybdenum for use in the preparation of a catalyst from a molybdenum-containing material containing at least molybdenum, A element (phosphorus and/or arsenic) and X element (at leas...
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WO/2005/078064A1 |
A method for maintaining the activity of silicoaluminophosphate (SAPO) molecular sieve catalyst particles during oxygenate to olefin conversion reactions. After regeneration of SAPO catalyst particles, the regenerated particles are mixed...
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WO/2005/075063A2 |
Reactor-regenerator device, comprising at least one reactor for catalytic dehydrogenation reactions of hydrocarbons and at least one regenerator of the catalyst o the "fast riser" type wherein the regenerator-riser is a substantially t...
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WO/2005/070543A1 |
Disclosed is method for restoring catalytic activity to a hydroprocessing catalyst that has become spent due to its use or to the deposition of carbon thereon. The method includes a carbon reduction step whereby carbon is removed from th...
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WO/2005/070538A2 |
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WO/2005/070542A1 |
A method of restoring catalytic activity to a spent hydroprocessing catalyst that has a first carbon concentration. The concentration of carbon on the spent hydroprocessing catalyst is reduced to provide a carbon-reduced catalyst having ...
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WO/2005/068078A1 |
A method of regenerating a hydrogenation catalyst without the use of any alkane; and a diolefin purification plant for use in this method, furnished with equipment simpler than in the prior art. There is provided a first method comprisin...
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WO/2005/058491A1 |
The invention relates to a catalyst provided in the form of an extrudate, which contains 5 to 85 % by weight of copper oxide and comprises, in the active material and as binders, the same oxidic carrier material. The invention also relat...
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WO/2005/056181A1 |
Disclosed is a catalyst which enables to produce an oxygen-containing organic compound at a high conversion rate. Such a catalyst also has a high selectivity of the oxygen-containing organic compound and a high utilization efficiency of ...
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WO/2005/056182A1 |
A process for removing ruthenium or ruthenium-containing compounds from a reaction mixture comprising a compound of formula (I) in an organic solvent using supercritical fluid processing techniques wherein RA, R3, R4, D and A are as defi...
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WO/2005/053841A1 |
The invention relates to a method for regenerating reforming catalysts. The catalyst generally comprises at least one precious metal, preferably a metal from group VIII of the periodical classification of elements, optionally at least on...
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WO/2005/047224A1 |
The invention relates to the long term operation of a heterogeneously catalysed gas phase partial oxidation of propene in order to form acrolein. The temperature of the solid bed catalyst increases over time, gas phase partial oxidation ...
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WO/2005/042159A1 |
A process for the regeneration of a deactivated zeolite beta catalyst such as rare earth promoted zeolite beta catalyst deactivated in the course of an aromatic alkylation reaction (4). A zeolite beta conversion catalyst deactivated with...
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WO/2005/035691A1 |
The invention pertains to a process for activating an hydrotreating catalyst comprising a Group VIB metal oxide and a Group VIII metal oxide which process comprises contacting the catalyst with an acid and an organic additive which has a...
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WO/2005/028102A1 |
A catalyst which is for use in the reductional removal of NOx contained in a waste gas with ammonia as a reducing agent and which, through long-term use at high temperatures, has undergone agglomeration of a vanadium oxide as an active i...
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WO/2005/028103A1 |
A method of regenerating a deteriorated denitrification catalyst by an easy and simple procedure. A catalyst which is for use in the reductional removal of NOx contained in a waste gas with ammonia as a reducing agent and has deteriorate...
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WO/2005/028107A1 |
A method for preparing hydroxyaromatic compounds brominated in the para-position, such as p-bromophenol, is disclosed. The method yields overall high process selectivity through isomeric equilibration and separation of the brominated pro...
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WO/2005/023425A1 |
The present invention is directed to a swaged catalyst regenerator and processes for using the catalyst regenerator. In one embodiment, the swaged catalyst regenerator includes a regeneration zone having a first major diameter and into w...
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WO/2005/018805A1 |
Catalyst particles are efficiently separated from particles substantially inactive in a reaction and the catalyst particles are optionally separated into groups of different kinds to thereby enable the efficient regeneration of the catal...
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WO/2005/017073A1 |
This invention provides processes for maintaining a desired particle size distribution in an oxygenate to olefin reaction system. In one embodiment, the invention comprises replacing lost catalyst fines with less active co-catalyst parti...
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WO/2005/014168A1 |
Process for regenerating a spent hydrogenation catalyst comprising at least one catalytic metal selected from the group consisting of Ru, Rh, Pd, Os, Ir and Pt on an inert support, the said process essentially consisting of a thermal tre...
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WO/2005/012173A1 |
One process for producing phosgene comprises: introducing a carbon monoxide stream to a metal oxide impregnated activated carbon, reducing a hydrogen sulfide concentration in the carbon monoxide stream to produce a cleaned stream, wherei...
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WO/2005/009937A1 |
A method for the production of alpha, beta unsaturated acyclic or cyclic carbonyl compounds by hydrogenation of corresponding saturated carbonyl compounds in a gaseous phase on a heterogeneous dehydrogenation catalyst, characterized in t...
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WO/2004/103093A1 |
The invention relates to a method for the selective isolation of valuable substances with the aid of compressed C2 to C4 hydrocarbons, such as for example ethane, propane, and/or butane, according to which a starting material is used, wh...
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WO/2004/103792A1 |
In order to detect a vehicle position on a rail assembly, magnetostrictive sensors (5) are integrated into said rail assembly and marking magnets (13) are disposed on the vehicles (11). Measuring bars (6) are successively arranged withou...
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WO/2004/094024A2 |
A method and apparatus is provided for regenerating a sorbent (12,14) that has been poisoned by components derived from flue gas. The sorbent is treated with an agent (10) to remove poisoning components and introduce a promoting agent in...
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WO/2004/085062A1 |
Improved processes are provided for the production of alkyl aromatic compounds using zeolite catalyst/s) and for periodic reactivation in situ of zeolite catalyst(s) that have at least in part become deactivated. Processes according to t...
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WO/2004/081243A1 |
A method for recovering platinum group elements, wherein an oxide based raw material accompanying platinum group elements, a copper oxide, a solid carbonaceous reducing agent and a flux are charged into a gastight electric furnace equipp...
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WO/2004/080596A1 |
A method for recovering a catalyst material from a catalyst structure having a substrate and, formed on at least a part of the surface thereof, a catalyst layer, characterized in that it comprises (a) a step of forming an overcoat layer ...
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WO/2004/080591A1 |
The invention relates to a method for the regeneration of zeolite catalysts, in order to maintain a high and stable activity of the catalyst. In the method, the regeneration is performed in a CFB reactor system wherein a reaction involvi...
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WO/2004/078343A1 |
The invention relates to a method for a Re2O7 doped catalyst support deactivated (deactivated catalyst) by a hydrocarbon mixture containing C2-C6 olefin (C2-6 lot) used during a metathesis. The inventive method consists in treating the d...
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WO/2004/076067A1 |
The present invention is directed toward methods for cleaning catalytic converters, particularly it pertains to methods of submerging a catalytic converter into an aqueous bath and applying a pressurized fluid through the catalytic conve...
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WO/2004/073835A1 |
Disclosed is a method for removing dirt (14) and/or clogged material (13) from a set (11) of ducts (12), especially interconnected parallel ducts (12) such as a catalytic converter module, by means of a treatment with a liquid (2). Said ...
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WO/2004/071657A1 |
The invention relates to a process for the regeneration of mixed oxide catalysts that are used in ammonoxidation for the production of nitriles, by passing an oxidizing agent over the catalyst at elevated temperature. The invention relat...
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WO/2004/065007A1 |
A process for recovering an active catalyst component from a process stream containing, in addition to dissolved active catalyst component, also at least aldols, acetals and/or esters, includes admixing an alcohol component comprising at...
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