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| Number | Title | Issue Date |
| 7737067 | Regeneration of ionic liquid catalyst A process for regenerating a used ionic liquid catalyst comprising a cationic component and an anionic component, which catalyst has been deactivated by conjunct polymers complexed with the anionic component comprising the steps of adding a reagent which is capable ... | 06/15/2010 |
| 7399725 | Perchlorate destruction Perchlorate is removed and effectively destroyed in devices and methods that employ a eluting solvent in which the anion of an acid solubilizes Ti (III), which may be electrochemically generated or added in situ. Using such solvents, destruction of perchlorate is un... | 07/15/2008 |
| 7291577 | Hydrometallurgical process for production of supported catalysts A process for the production of a supported catalyst. The process comprises heating a slurry that comprises a catalyst support and at least one active catalytic ingredient precursor. Gas is introduced to the slurry at a sufficient pressure to reduce the at least one... | 11/06/2007 |
| 7253106 | Manufacturable CoWP metal cap process for copper interconnects A method to electrolessly plate a CoWP alloy on copper in a reproducible manner that is effective for a manufacturable process. In the method, a seed layer of palladium (Pd) is deposited on the copper by an aqueous seeding solution of palladium acetate, acetic acid ... | 08/07/2007 |
| 7169735 | Catalyst and process for preparing the same The object of the present invention is to provide a catalyst that is highly active and capable of maintaining its activity for a long period of time even in a high-temperature environment. The present invention is a catalyst including: a porous carrier which is comp... | 01/30/2007 |
| 7115537 | Process for the regeneration of zeolite catalysts A process for the regeneration of a zeolitic catalyst which is at least partially exhausted by use in the synthesis of optionally substituted methylenedianiline (MDA) and derivatives thereof, or of a mixture of optionally substituted MDA and derivatives thereof, wit... | 10/03/2006 |
| 7101822 | Method for decontaminating solid iodine filters The invention relates to a process for decontaminating solid iodine filters containing silver iodide, silver iodate and/or physisorbed molecular iodine. This process consists in placing the filter in contact with an aqueous solution of a reducing agent chosen... | 09/05/2006 |
| 7084085 | Process for regenerating a layered double hydroxide A process for producing alumina from bauxite is described in which bauxite is treated with an alkali to form a mixture comprising a solution of aluminum-containing ions and alumina trihydrate is precipitated from the solution. The process comprises treatment of the ... | 08/01/2006 |
| 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 |
| 6908873 | Regeneration of spent supported metal catalysts A method for regenerating spent supported metal catalysts comprising treating the spent catalyst with an organo-metallic complex forming agent having an ionization constant pK1 of at least 2.5. The catalyst activity is restored to an activity level near t... | 06/21/2005 |
| 6906339 | Passivated nanoparticles, method of fabrication thereof, and devices incorporating nanoparticles A plurality of semiconductor nanoparticles having an elementally passivated surface are provided. These nanoparticles are capable of being suspended in water without substantial agglomeration and substantial precipitation on container surfaces for at least 30 days. ... | 06/14/2005 |
| 6878654 | Reactivation of aromatics alkylation catalysts 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 to about 600° C. and then co... | 04/12/2005 |
| 6872369 | Selective separation of iron by treatment with an ion-exchanging resin comprising diphosphonic acid groups The invention relates to a process for selectively separating iron from other metal ions, in particular ions present in certain oxidation catalysts. It also relates to a process for recycling catalysts in the reaction for the oxidation of alcohols and/or keto... | 03/29/2005 |
| 6858761 | Process for preserving resin catalyst for addition reaction of alkylene oxide and utilization of this process The present invention provides a process and its utilization in a process comprising the step of carrying out an addition reaction of an alkylene oxide to an addition-receiving substance in the presence of a resin catalyst, thereby producing the addition reaction pr... | 02/22/2005 |
| 6764662 | Recover and recycle rhodium from spent partial oxidation catalysts A method for the recovery of rhodium from spent supported catalysts. In one embodiment, a method for recovering rhodium from a host material includes roasting the host material in air at a temperature sufficient to convert at least a portion of rhodium to Rh2 | 07/20/2004 |
| 6753286 | Supported catalyst regeneration There is provided a process for renewing the activity of used, supported metal catalysts for the hydrogenation of carbon monoxide to form a mixture of hydrocarbons comprising decreasing the hydrocarbon content of the catalyst, impregnating said catalyst under an non... | 06/22/2004 |
| 6753285 | Process for regenerating a used precious metal catalyst The invention is directed to a process for the regeneration of a catalyst, said catalyst comprising at least one precious metal on an amorphous silica-alumina support, in which process the catalyst is impregnated with an acid, followed by reduction or oxidation of t... | 06/22/2004 |
| 6740615 | Regeneration of used supported noble metal catalysts A method for regenerating used supported noble metal catalysts, which method includes solvent cleaning the used catalyst by contact with a suitable organic liquid cleaning solvent such as alcohols, ketones and such to remove organic deposits from the catalyst, follo... | 05/25/2004 |
| 6596661 | Process for regenerating a deactivated catalyst A process for regenerating a catalyst, in particular a plate-type or honeycomb catalyst, which has been at least partially deactivated by catalyst poisons, is described. The catalyst is treated with a gaseous reducing agent and with a polyfunctional compl... | 07/22/2003 |
| 6559087 | Method and apparatus for the continuous treatment of catalyst and catalyst support material A method for the treatment of catalyst or catalyst support material in an apparatus in which the treatment is carried out continuously in such a way that the physical and/or chemical conditions change during entry of the catalyst or catalyst support mater... | 05/06/2003 |
| 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 |
| 6534434 | Chiral imidazolidinone-based catalyst composition and reaction system Acid addition salts of imidazolidinones are provided as catalysts for transforming a functional group within a first reactant by reaction with a second reactant. Exemplary first reactants are ,ଲ-unsaturated carbonyl compounds such as ,... | 03/18/2003 |
| 6521199 | Regeneration of onium fluoride-HF adducts Hydrogen fluoride adducts and ammonium fluorides are used for fluorinating acid chlorides and halocarbon compounds such as chloroalkanes or chloronated ethers. The used adducts can be regenerated and then reused in the fluorination reactions.... | 02/18/2003 |
| 6498120 | Rejuvenating SAPO molecular sieve with anhydrous liquid or vapor This invention is to a method of rejuvenating a molecular sieve. The method includes contacting a molecular sieve having a methanol uptake index of less than 1, or a catalyst containing molecular sieve having a methanol uptake index of less than 1, with a... | 12/24/2002 |
| 6417128 | Methods and replacing water and cyclohexanone with acetic acid in aqueous solutions of catalyst This invention relates to methods of replacing water and cyclohexanone with acetic acid in an aqueous solution of catalyst, preferably a cobalt compound. Such an aqueous solution is produced by extracting catalyst with water from a cyclohexanone/water sol... | 07/09/2002 |
| 6410784 | Recovery of metal components of a catalyst in a process for production of trimellitic acid A process for recovering cobalt and manganese components from a product stream or a residue stream that resulted from a process which employs a catalyst system containing the cobalt and manganese components for oxidizing pseudocumene to trimellitic acid i... | 06/25/2002 |
| 6395664 | Process for reactivating a deactivated dehydrocyclodimerization catalyst with water This invention relates to a process for reactivating a dehydrocyclodimerization catalyst. Dehydrocyclodimerization catalysts which contain an aluminum phosphate binder can be deactivated when they are exposed to hydrogen at temperatures above 500° C. The... | 05/28/2002 |
| 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 |
| 6291394 | Process for improving 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 les... | 09/18/2001 |
| 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 |
| 6255510 | Production of aromatic carboxylic acids and recovery of Co/Mn catalyst from ash Cobalt and/or manganese is recovered from the ash obtained following incineration of the catalyst containing residue arising from the liquid phase oxidation of an aromatic carboxylic acid such as terephthalic acid. Recovery is effected by contacting the a... | 07/03/2001 |
| 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 |
| 6191060 | Reclamation of metal catalysts used in the production of diaryl carbonates A method for efficient reclamation of metal catalyst species from aqueous extract streams diaryl cabonate synthesis, comprising treating a metal-containing aqueous extract stream of a mixture from the production of diaryl carbonates with a precipitating a... | 02/20/2001 |
| 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 |
| 6015928 | Process for the production of higher oxo alcohols A single-stage process is described that includes simultaneously, in a mixture containing an olefin; synthesis gas; a cobalt catalyst in an organic phase; and an aqueous cobalt salt solution; hydroformylating the olefin, and forming and extracting into th... | 01/18/2000 |
| 6001763 | Method for re-manufacturing a cobalt/manganese/bromine catalyst from residue containing used catalyst A process for recovering a solution of Co and Mn acetates and other valuable components of a waste residue of used catalyst discharged from a plant for the liquid-phase, homogeneously catalyzed oxidation of alkylaromatic compounds, to produce polycarboxyl... | 12/14/1999 |
| 5990037 | Method of treating spontaneously combustible catalysts Self-heating characteristics of a spontaneously combustible catalyst are reduced by treating spontaneously combustible catalysts with oxygen-containing hydrocarbons having at least 12 carbon atoms. The treatment is particularly suitable for reducing the s... | 11/23/1999 |
| 5985235 | Method of treating a catalyst The invention relates to a method of activating a catalyst for hydrogenation of anthraquinones or derivatives thereof used in production of hydrogen peroxide comprising the step of treating the catalyst with an acid. The invention also relates to a method... | 11/16/1999 |
| 5938927 | Process for extracting oil from contaminated filter media Oil and oil additives separated from a contaminated solid particulate filter medium, preferably diatomaceous earth particles. Portions of a mixture of oil, oil additives and the filter medium are compressed into pellets that are extracted with liquid or s... | 08/17/1999 |
