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| Number | Title | Issue Date |
| 8173566 | Process for regenerating a spent sorbent A method and apparatus is provided for regenerating a sorbent that has been poisoned by components derived from flue gas. The sorbent is treated with an agent to remove the poisoning components and introduce a promoting agent into the sorbent. The method and apparat... | 05/08/2012 |
| 7838455 | Method of regeneration of titanium-containing molecular sieve catalyst Disclosed herein is a method of regenerating a titanium-containing molecular sieve catalyst. Particularly, this invention provides a method of regenerating a titanium-containing molecular sieve catalyst used in epoxidation of olefin through simple treatment using a ... | 11/23/2010 |
| 7741239 | Methods of regeneration of SCR catalyst poisoned by phosphorous components in flue gas A method of regeneration of a SCR catalyst for use in high temperature thermal processes such as in a power plant facility burning fossil fuels, bio-based fuels, or a combination thereof, wherein the catalyst is poisoned by phosphorous components in the flue gas and... | 06/22/2010 |
| 7723251 | Method of regeneration of SCR catalyst A method of regeneration of a SCR catalyst for use in a power plant facility burning fossil fuels, bio-based fuels, or a combination thereof, wherein poisons are removed from the catalyst. The method is suitable for use during neutralization using C1 to C... | 05/25/2010 |
| 7674739 | Regeneration of ionic liquid catalyst using a metal in the absence of added hydrogen A process for regenerating a used acidic ionic liquid catalyst comprising contacting the used ionic liquid catalyst with at least one metal in a regeneration zone in the absence of added hydrogen under regeneration conditions for a time sufficient to increase the ac... | 03/09/2010 |
| 7384882 | Process for regenerating titanium-containing catalysts The present invention discloses a process for regenerating titanium-containing catalysts, characterized in that a deactivated catalyst is treated in an acidic solution having a pH value of ≦3, and then dried and calcined. The process is simple in procedure and can... | 06/10/2008 |
| 7326348 | Method for removal and destruction of ammonia from an aqueous medium Methods and apparatuses are provided for the removal and destruction of ammonia from an aqueous medium. The methods and apparatuses include the removal of ammonia from an aqueous medium by contact with either natural or synthetic zeolite. The spent zeolite is regene... | 02/05/2008 |
| 7285261 | Preparation and application of novel chromium based nanocatalyst for gas-phase fluorination and hydrofluorination reactions A process of reacting a metal chloride, especially chromium (III) chloride, with an alkali metal oleate at a temperature of from about 30° to about 300° C., and especially at about 70±1° C., in a solvent to form a metal oleate complex, especially a chromium-olea... | 10/23/2007 |
| 7255798 | Recycling of used perfluorosulfonic acid membranes A method for recovering and recycling catalyst coated fuel cell membranes includes dissolving the used membranes in water and solvent, heating the dissolved membranes under pressure and separating the components. Active membranes are produced from the recycled mater... | 08/14/2007 |
| 7232782 | Regeneration, pretreatment and precipitation of oxides of manganese Methods and systems for regenerating and pretreating oxides of manganese and precipitation of oxides of manganese from manganese salt solutions. The oxides of manganese and manganese salt solutions are processed utilizing heated aqueous oxidizing solutions at or nea... | 06/19/2007 |
| 7183233 | Method for separating an esterification catalyst Process for removal of the esterification catalyst by separation from a crude plasticizer ester obtained by reacting a dicarboxylic acid with C8–C13 alcohols, by treating the crude ester with an aqueous alkali solution in the range from 10 to... | 02/27/2007 |
| 7115154 | Process for purifying hydrogen streams using composite adsorbents A process for purifying various hydrocarbon streams using a composite adsorbent is disclosed. The adsorbent contains a zeolite, an alumina and a metal component. The metal component (Madd) is present in an amount (over and above the amount of exchangeable... | 10/03/2006 |
| 7108784 | Apparatus for removal and destruction of ammonia from an aqueous medium Methods and apparatuses are provided for the removal and destruction of ammonia from an aqueous medium. The methods and apparatuses include the removal of ammonia from an aqueous medium by contact with either natural or synthetic zeolite. The spent zeolite is re-gen... | 09/19/2006 |
| 7067455 | Copper modified catalysts for oxidative dehydrogenation Catalysts and methods useful for the production of olefins from alkanes via oxidative dehydrogenation (ODH) comprise at least one base metal and copper with an optional promoter. The catalyst preferably comprises a base metal and a copper-modified Groups 8, 9, or 10... | 06/27/2006 |
| 7037478 | Method for continuous producing hydroxylammonium salts A process for the continuous preparation of hydroxylammonium salts by catalytic reduction of nitrogen monoxide by means of hydrogen in a dilute aqueous solution of mineral acid in a plurality of reaction stages connected in series comprises ... | 05/02/2006 |
| 7018447 | Method of cleaning a rotary concentrator A method of cleaning the adsorbent media of a rotary concentrator in-situ while maintaining operation of the concentrator, including directing washing liquid into the sectors in the desorb plenum, then rotating the sectors one full revolution plus at least one secto... | 03/28/2006 |
| 6995107 | Raney catalyst, process for producing it and process for producing a sugar-alcohol using the same To obtain a Raney catalyst for fixed bed permitting a continuous use with a high initial activity and to produce a high purity sugar-alcohol at a low cost using the same. For this object, sugar-alcohol is produced by: using the powder type Raney catalyst made... | 02/07/2006 |
| 6929701 | Process for decoating a washcoat catalyst substrate The invention relates to a process for decoating a used washcoat carrier substrate to produce a clean, inert carrier or substrate. In a preferred embodiment, a process according to the invention includes treating a washcoat catalyst substrate in an aqueous solution ... | 08/16/2005 |
| 6909026 | Process for liquid phase aromatics alkylation comprising in-situ catalyst reactivation with polar compounds The catalyst becomes at least partially deactivated by sorbing catalyst poisons present in the feed during a process for alkylating aromatics by contacting a feed containing benzene, toluene, xylenes, alkylbenzenes, naphthalene or substituted naphthalenes under liqu... | 06/21/2005 |
| 6797184 | Catalyst for treating waste water, method for preparing the same and process for treating waste water A method is provided for oxidizing and/or decomposing organic and/or inorganic oxidizable substances in waste water by wet oxidation with a use of a catalyst, wherein the oxidizable substances are oxidized and/or decomposed with an oxygen containing gas in the prese... | 09/28/2004 |
| 6777369 | Process for producing catalyst The present invention relates to the effective utilization of a used catalyst containing at least molybdenum, an A element (at least one element selected from the group consisting of phosphorus and arsenic) and an X element (at least one element selected from the gr... | 08/17/2004 |
| 6727202 | Enhanced NOx trap having increased durability A catalytic trap disposed in an exhaust passage of an internal combustion engine which is operated with periodic alternations between lean and stoichiometric or rich conditions, for abatement of NOx in an exhaust gas stream which is generated by the engin... | 04/27/2004 |
| 6673732 | Process for catalytic ammonia production--preparation and recovery of ammonia synthesis catalyst A catalyst active in ammonia synthesis with improved activity and a process for the recovery of useful components from the catalyst.... | 01/06/2004 |
| 6558533 | Process for sulfur removal from hydrocarbon liquids The present invention is directed to a method of desulfurization of a sulfur laden hydrocarbon liquids that comprises contacting the liquid with a sponge nickel metal alloy, removing the sulfur free liquid, regeneration of the alloy by contact with an aqu... | 05/06/2003 |
| 6559085 | Method for regenerating molybdenum-containing oxide fluidized-bed catalyst A method for regeneration of a molybdenum-containing oxide fluidized bed catalyst which comprises impregnating a fluidized catalyst of a metal oxide containing molybdenum, bismuth and iron which has been deteriorated by being used for a reaction in produc... | 05/06/2003 |
| 6423657 | Process for the reactivation of activated carbon A process and a set of equipment for reactivating spent activated carbon onto which pollutants were adsorbed. The present process comprises subjecting the activated carbon to be reactivated in a mixed solution consisting of ethanol, sodium hydroxide solut... | 07/23/2002 |
| 6403514 | Process for the regeneration of zeolitic catalysts containing titanium A process is described for regenerating exhausted zeolitic catalysts containing titanium and deriving from oxidation processes of organic substrates with hydrogen peroxide. Said process consists in carrying out a treatment in an aqueous medium with hydrog... | 06/11/2002 |
| 6395665 | Methods for the regeneration of a denitration catalyst This invention provides a method for the regeneration of a denitration catalyst which comprises cleaning a denitration catalyst having reduced denitration power with an aqueous alkaline solution to remove the substances deposited thereon, and subjecting t... | 05/28/2002 |
| 6362122 | Regeneration of spent zeolite compositions A process for regenerating spent zeolite composites. The process involves contacting the composite, either as a shaped article or a fine powder, with a caustic solution, e.g., sodium hydroxide at treating condition. Once the contacting is completed, the c... | 03/26/2002 |
| 6342462 | Process for regenerating an adsorbent A novel process for the regeneration of a solid adsorbent which is at least partially spent and has a reactive metal (e.g. silver) dispersed thereon is disclosed. The regeneration consists of a step whereby accumulated metal-containing reaction products f... | 01/29/2002 |
| 6331261 | Water softener salt formulation The monosodium and monopotassium citrates are improved iron-sequestering agents in salt compositions for regenerating spent water softener cation exchange resins. The dry compositions comprise a surfactant, an alkali metal chloride selected from the group... | 12/18/2001 |
| 6294703 | Process for the manufacture of cycloalkyldimethanol A process for making cycloalkyldimethanol, includes hydrogenating at least one cycloalkyldicarboxylic acid and/or an alkyl ester thereof with a catalyst, to produce a cycloalkyldimethanol, where the catalyst contains ruthenium, tin and platinum. Also, a m... | 09/25/2001 |
| 6281157 | Self-catalytic bath and method for the deposition of a nickel-phosphorus alloy on a substrate Disclosed are a self-catalytic bath and a method for the deposition of Ni--P alloy on a substrate. The bath comprises nickel sulfate, sodium hypophosphite as a reducing agent, acetic acid as a buffer and traces of lead as a stabilizer. It also includes a ... | 08/28/2001 |
| 6239054 | Process for regenerating catalysts Provided are high activity catalysts based upon gamma alumina containing substrates impregnated with one or more catalytically active metals, which catalysts in addition contain a nanocrystalline phase of alumina of a crystalline size at the surface of le... | 05/29/2001 |
| 6162753 | Process for recovering cobalt carbonyl catalysts used to produced N-acyl-alpha-amino acid derivatives by amidocarbonylation The present invention relates to a process for recovering cobalt carbonyl catalysts used in the preparation of N-acyl-alpha-amino acid derivatives by amidocarbonylation comprising the process steps: adding aqueous hydrogen peroxide solution to the reaction sol... | 12/19/2000 |
| 6100210 | Method for regenerating a catalyst with a sulphurus active phase and contaminated by a mercury compound The invention features a method for treating a supported catalyst with a sulphur compound based active phase and a mercury compound contaminated mineral support. This method consists in implementing the following steps: the said catalyst is contacted with... | 08/08/2000 |
| 6080696 | Method for cleaning fouled ion exchange resins Methods are disclosed for the regeneration of fouled ion exchange (IX) resins. In one embodiment, the fouled resin is treated simultaneously with reducing agent and acid. In a preferred embodiment, fouled resin is treated with reducing agent and then with... | 06/27/2000 |
| 6071843 | Process for reactivating catalyst systems containing a platinum group metal Platinum metal-containing catalyst systems, which comprise at least one platinum metal, a co-catalyst and other salts, and which are used for the production of diaryl carbonates by the oxidative reaction of aromatic hydroxy compounds with carbon monoxide,... | 06/06/2000 |
| 6066750 | High efficiency epoxidation process Propylene is converted to propylene oxide in a highly efficient liquid phase process wherein temperature and pressure are both increased over the course of the epoxidation, which is preferably conducted in a continuous mode of operation. The catalyst used... | 05/23/2000 |
| 5962366 | Treatment to improve the durability and selectivity of a hydrodechlorination catalyst and catalyst The durability and selectivity of a supported nobel metal hydrodeclorination catalyst can be improved by treating the supported catalyst, which comprises support and catalytic noble metal, with a late transition metal halide salt, a post transition metal ... | 10/05/1999 |
