Class 502/12 - For regenerating or rehabilitating catalyst or sorbent

Subclass of Class 502 - Catalyst, solid sorbent, or support therefor: product or process of making
Definition: Process, , of treating a composition which has been in use,
No. of patents: 36
Last issue date: 02/12/2008

Number	Title	Issue Date
7329624	Regenerable adsorbents for the purification of silicone based solvents An adsorbent for removal of impurities from silicone based solvents is presented. The adsorbent is regenerable for repeated use in cleaning silicone based solvents. ...	02/12/2008
7314954	System and method for recovering PTA mother liquid and purifying and regenerating of catalyst A system and a method for recovering PTA (purified terephthalic acid) mother liquid as well as purifying and regenerating catalyst, the system and the method is used mainly in manufacturing PTA wherein the mother liquid of the PTA generated by hydrogenation reaction...	01/01/2008
7291270	Process for removal of impurities from an oxidizer purge stream A process is disclosed that relates to the removal of impurities and the recovery of a mother liquor and wash filtrate from an oxidizer purge stream produced in the synthesis of carboxylic acid, typically terephthalic. More particularly, the process involves the rem...	11/06/2007
7285677	System and method for recovering CTA residues and purifying/regenerating catalyst A system/method for recovering CTA (crude terephthalic acid) residues and purifying and regenerating catalyst, being used for recovering residues generated in the reaction processes of oxidation in manufacturing PTA (purified terephthalic acid) as well as purifying ...	10/23/2007
7282151	Process for removal of impurities from mother liquor in the synthesis of carboxylic acid using pressure filtration 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 catalyst from an oxidizer purge st...	10/16/2007
7273559	Process for removal of impurities from an oxidizer purge stream A process is disclosed that relates to the removal of impurities and the recovery of a mother liquor and wash filtrate from an oxidizer purge stream produced in the synthesis of carboxylic acid, typically terephthalic. More particularly, the process involves the rem...	09/25/2007
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
7083731	Precious metal scavenging from a liquid medium with a functionalised polymer fiber A method for the recovery of a metal from a liquid medium containing the metal I solution or in finely divided insoluble from comprises contacting the medium with a functionalized polymer fiber capable of binding the metal and recovering the metal from the fiber. Th...	08/01/2006
6933257	Sol-gel derived porous microcomposite of perfluorinated ion-exchange polymer and metal oxide Porous microcomposites have been prepared from perfluorinated ion-exchange polymer and metal oxides such as silica using the sol-gel process. Such microcomposites possess high surface area and exhibit extremely high catalytic activity. ...	08/23/2005
6403734	Organometallic fluorenyl compounds, preparation, and use Bridged fluorenyl-containing metallocenes of metals of Groups 4-6 and their use in forming homopolymers of alpha olefins or polymers of ethylene and optionally minor amounts of alpha olefins, wherein in each case at least one of the cyclic groups of the b...	06/11/2002
6001762	Reactivation of perfluorinated ion-exchange microcomposite catalysts Catalyst comprising a perfluorinated ion-exchange microcomposite can be reactivated upon contact with at least one cleaning agent, such as an oxidizing agent, organic solvent, supercritical fluid or detergent. The process may further comprise heating prio...	12/14/1999
5955394	Recovery process for oxidation catalyst in the manufacture of aromatic carboxylic acids An improved separation process for the continuous catalytic oxidation of aromatic alkyls for the production of aromatic carboxylic acids in a liquid solvent medium, wherein the reactor product stream is withdrawn from the oxidation process, then separated...	09/21/1999
5731252	Process for improving productivity of a carbonylation catalyst solution by removing corrosion metals A process for treating low water content carbonylation catalyst solutions which contain a rhodium component and an alkali metal component to remove metallic corrosion products is disclosed. The process comprises contacting the catalyst solution with an io...	03/24/1998
5502016	Method to treat an ion-exchanger catalyst for the process of bisphenol-A synthesis In the process of bisphenol-A systhesis a method for controlling the water content of the resultant cation-exchanger bed wherein an acid ion-exchanger resin in the form of a sulphonated styrene-divinylbenzene copolymer is washed with phenol and the result...	03/26/1996
5470809	Method to treat an ion-exchanger catalyst for the process to synthesize alkylphenols An ion-exchanger catalyst in the form of an acid ion-exchanger resin used for the synthesis process of alkylated phenols and having substitutes containing 6-12 carbon atoms in a chain is treated with phenol alkylation having olefins in the presence of aci...	11/28/1995
5306859	Alkylation catalyst regeneration utilizing polyvinylpyridine and amine substituted styrene divinylbenzene copolymer contact materials Described is a novel process for regenerating an ASO contaminated alkylation catalyst containing a sulfone component and a hydrogen halide component. A sulfone-containing mixture containing ASO and which is derived by the removal of a major portion of the...	04/26/1994
5250483	Method for treatment of catalysts using denitrifying bacteria A method of releasing metals from catalysts in a form that is readily recoverable using denitrifying bacteria is disclosed. The method can be used to regenerate catalysts and to recover metals from catalysts, especially molybdenum and nickel....	10/05/1993
5208194	Recovery of group VIII transition metals from organic solutions using acidic ion-exchange resins A process for recovering a Group VIII metal from an organic solution is disclosed. The organic solution is contacted with an acidic ion exchange resin that has sulfonic acid active groups. The invention provides an effective and economical way to recover ...	05/04/1993
5124290	Process for removing metallic corrosion products from carbonylation reactions carried out under anhydrous conditions A process for removing metallic corrosion products from carbonylation reactions which are carried out under anhydrous conditions and in which methyl acetate and/or methanol and/or dimethyl ether are reacted over a noble metal catalyst system which compris...	06/23/1992
5051202	Process for bleaching and increasing the ion-exchange capability of sepiolite The present invention refers to a process for bleaching and increasing the ion-exchange capability of the sepiolite mineral, basically consisting of treating, at high pH and temperature, the sepiolite with a basic salt solution, which results in bleaching...	09/24/1991
4985133	Reducing NO_x emissions from FCC regenerators by segregated cracking of feed A fluidized catalytic cracking process using a riser reactor to crack a mixture of high and low nitrogen content fresh feeds is operated to reduce NOx emissions in the regenerator flue gas. Segregation of the feed into high and low nitrogen con...	01/15/1991
4929582	Hydrous oxide ion-exchange compound catalysts A catalytic material of improved activity which comprises a hydrous, alkali metal or alkaline earth metal or quaternary ammonium titanate, zirconate, niobate, or tantalate, in which the metal or ammonium cations have been exchange with a catalytically eff...	05/29/1990
4900520	Process for removal of soluble platinum group metal catalysts from liquid product mixtures A process for the neutralization, clarification and decolorization of organosilanes or organosilicones derived from the reaction of an organosilane or a hydropolysiloxane with an aliphatically unsaturated compound in the presence of an acidic platinum cat...	02/13/1990
4894477	Process for regenerating a carbonylation catalyst solution to remove corrosion metals and carbonylation of methanol to acetic acid A process for treating carbonylation catalyst solutions which contain a rhodium component and a lithium component to remove metallic corrosion products comprises contacting the catalyst solution with a cation exchange resin in the lithium form....	01/16/1990
4891130	Process for removing metals from aluminosilicate materials Disclosed is a process for removing accumulated metals, particularly vanadium and nickel, from particulate aluminosilicate materials and aluminosilicate materials that are obtained by the process. The process may advantageously be used to remove accumulat...	01/02/1990
4830997	Process for regenerating used catalysts by means of hydrogen peroxide aqueous solution stabilized with an organic compound The process has as an object the regeneration of catalysts containing at least one contaminating metal of the vanadium, nickel and iron group. The operation is conducted as follows: (a) The catalyst (1) is roasted in the presence of an oxygen-containing gas ...	05/16/1989
4714688	Process for regenerating used catalysts by means of hydrogen peroxide aqueous solution stabilized with an organic compound The process has as an object the regeneration catalysts containing at least one contaminating metal of the vanadium, nickel and iron group. The operation is conducted as follows: (a) The catalyst (1) is roasted in the presence of an oxygen-containing gas ...	12/22/1987
4461714	Method of making crystalline 2-layer lithium aluminates in ion exchange resins The bayerite form of crystalline alumina, Al(OH)3, contained within a macroporous ion exchange resin is converted to the gibbsite form of Al(OH)3 by reaction with hot MgX2, where X is halide, followed by water-washing the ...	07/24/1984
4312778	Membrane separation of catalyst metals from aromatic acid production Precipitation-free recovery of catalyst metal content of residue from manufacture of benzene carboxylic acid by oxidation with source of molecular oxygen of liquid methyl-substituted benzene in presence of cobalt, manganese, cerium, and mixtures of two or...	01/26/1982
4298759	Separation of cobalt and manganese from trimellitic acid process residue by extraction, ion exchanger and magnet A unique method of separating cobalt and manganese from residue obtained from the manufacture of trimellitic acid by the oxidation of pseudocumene in the presence of cobalt and manganese as metal oxidation catalysts and from each other without contributin...	11/03/1981
4202797	Recovering catalyst values in reaction liquors from oxidative production of carboxylic and polycarboxilic acids Heavy metal values are recovered from mother liquors remaining from oxidations to mono- or poly- carboxylic acids in aliphatic monocarboxylic acids in presence of catalyst heavy metals and bromides by (1) concentrating, (2) precipitating and (3) separatin...	05/13/1980
4162991	Recovering cobalt and bromide catalyst values using a strong anion exchange resin Cobalt catalyst values are recovered from mother liquors remaining from oxidations to mono- or polycarboxylic acids in lower aliphatic monocarboxylic acids in presence of catalysts comprising cobalt and bromide ions by (1) if necessary, adjusting the coba...	07/31/1979
4155877	Catalyst combustion regeneration process in downwardly moving bed with additional outlet responsive to gas flows Catalyst regeneration process and apparatus wherein air introduced to a midsection of a downwardly-moving mass of catalyst particles is taken off at the top and at the bottom of said bed through provided outlets and a third outlet is provided at the botto...	05/22/1979
4122007	Reclaiming process for zeolite served for adsorbing ammoniacal nitrogen contained in sewage Disclosed in the present invention is a process for removing ammoniacal nitrogen from zeolite by bringing a zeolite-containing substance employed for adsorbing ammoniacal nitrogen contained in sewage into contact with an aqueous solution of sodium carbona...	10/24/1978
4113754	Isolation and regeneration of rhodium-containing catalysts from distillation residues of hydroformylation reactions The isolation and regeneration of catalysts of type I or II where the R's are identical or different hydrocarbon radicals, to give the catalysts in a pure form, is effected by regenerating aqueous rhodium salt solutions, as obtained on treating distillation re...	09/12/1978
4007130	Catalyst regeneration method A method for treating catalyst solution comprising the complex reaction product formed on mixing of a rhodium component or an iridium component and a halogen component in the presence of carbon monoxide to remove metallic corrosion products and recover rh...	02/08/1977

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Class 502/12 - For regenerating or rehabilitating catalyst or sorbent