Oxygen Containing Patents (Class 502/33)
  • Patent number: 11498847
    Abstract: The present disclosure is directed to a non-destructive process for removing metals, metal ions and metal oxides in alumina-based materials without destroying alumina, allowing the regeneration of alumina-based catalysts. The non-destructive process uses an extracting agent that sequesters metals, metal ions and/or metal oxides present in alumina-based materials without destroying the alumina, allowing the regeneration of alumina-based catalysts.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: November 15, 2022
    Assignee: INSTITUTO MEXICANO DEL PETROLEO
    Inventors: Patricia Perez Romo, Candido Aguilar Barrera, Juan Navarrete Bolanos, Santos Glorindo Reyes Robles
  • Patent number: 10792652
    Abstract: Disclosed herein are methods to rejuvenate a deactivated hydroformylation catalyst solution wherein the solution comprises rhodium, polydentate phosphine ligands, and polydentate phosphine ligand degradation products. In one embodiment, such methods comprise adding a peroxide to the deactivated hydroformylation catalyst solution.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: October 6, 2020
    Assignee: Dow Technology Investments LLC
    Inventors: Michael A. Brammer, William N. Felsted, II, Thomas C. Eisenschmid
  • Patent number: 10669178
    Abstract: The present invention relates to a method for treating industrial water containing organic matter, said method comprising: a step of physical separation producing wastes and an effluent; a step of adsorption of at least one part of said organic matter present in said effluent on at least one adsorbent resin chosen from the group comprising the non-ionic cross-linked resins and the microporous carbon resins; a step of reverse osmosis filtration downstream from said adsorption step.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: June 2, 2020
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Mouloud Hendou, Camille Sagne
  • Patent number: 9809531
    Abstract: A method for producing a fatty acid ester through desulfurization of sulfur from a fatty acid ester using a catalyst, wherein the catalyst carries a catalyst metal on a support, (a) the catalyst contains as the catalyst metal one or more elements selected from the elements of group 9, group 10 and group 11 of the periodic table, (b) the total pore volume of the catalyst is 0.05 mL/g or more, and (c) the volume of pores with a pore size of 0.1 ?m or more and 500 ?m or less is 50% or more of the total pore volume of the catalyst. A desulfurization method using the desulfurization and a method for producing an alcohol through hydrogenation of the fatty acid ester obtained through the desulfurization are also provided.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: November 7, 2017
    Assignee: KAO CORPORATION
    Inventors: Nobuhiko Okada, Katsutoshi Yamamoto, Taichi Homma, Kazuyuki Harima
  • Patent number: 9199222
    Abstract: The removal of fluoroalkanes from fluoroalkane-containing hydrocarbon streams, preferably C3 to C5 hydrocarbon streams. The fluoroalkane-containing hydrocarbon stream is contacted with an adsorbent containing a strong acid function, preferably a silica gel or a strong cation ion-exchange resin having sulfonic acid functionality.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: December 1, 2015
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Kenneth A. Boateng, Marc-Andre Poirier
  • Patent number: 8946105
    Abstract: Methods of removing iron from a catalytic converter having an accumulation of one or more iron compounds and regenerating a catalytic converter are provided. A catalytic converter having an accumulation of one or more iron compounds embedded or deposited thereon can be treated with a substantially aqueous alkaline solution in which the substantially aqueous alkaline solution includes an antioxidant.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: February 3, 2015
    Assignee: Steag Energy Services GmbH
    Inventors: Birgit Marrino, Thies Hoffmann
  • Publication number: 20140357919
    Abstract: The present invention relates to a process for the oxidative regeneration of a deactivated catalyst comprising molecular sieve to provide a regenerated molecular sieve catalyst, wherein said deactivated catalyst is from one or both of an oxygenate to olefin process and a olefin cracking process, said regeneration process comprising at least the steps of providing a regeneration gas stream comprising oxidant; treating the regeneration gas stream with a liquid adsorbent stream comprising an ethylene glycol in a contaminant absorption zone to remove at least a part of one or more of any water, any alkali metal ion and any alkaline earth metal ion present in the regeneration gas stream to provide a treated regeneration gas stream comprising oxidant; regenerating a deactivated catalyst comprising molecular sieve with the treated regeneration gas stream to provide a regenerated catalyst comprising regenerated molecular sieve.
    Type: Application
    Filed: November 28, 2012
    Publication date: December 4, 2014
    Inventors: Sivakumar Sadasivan Vijayakumari, Jeroen Van Westrenen
  • Patent number: 8759242
    Abstract: An improved slurry catalyst feed system for heavy oil upgraded is provided. The catalyst feed system comprises a fresh slurry catalyst and a deoiled spent catalyst, with the deoiled spent catalyst being present in an amount of at least 10% the catalyst feed system. The deoiled spent catalyst is a slurry catalyst that has been used in a hydroprocessing operation resulting in than 80% but more than 10% of original catalytic activity, and containing less than 10 wt. % soluble hydrocarbons as unconverted heavy oil feed. The deoiled spent catalyst is slurried in a hydrocarbon medium as dispersed particles prior to being fed to the heavy oil upgrade system.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: June 24, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Shuwu Yang, Julie Chabot, Bruce Edward Reynolds
  • Patent number: 8716159
    Abstract: A method for eliminating silicon or silicon compounds in alumina based materials without destroying such alumina based materials enabling reutilization particularly in catalysts for hydrotreating processes, comprising: a) mixing alumina based solid material which contains silicon with an alcohol extraction agent at a temperature between 10 and 300° C., for 10 minutes to 96 hours to form a mixture; b) separating solids from the mixture by centrifugation, decantation or filtration to obtain separated solids; c) washing the separated solids with at least one of water, alcohol or an ammonium hydroxide solution to form washed solids; and d) drying the washed solids to obtain regenerated alumina based solid material.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: May 6, 2014
    Assignee: Instituto Mexicano del Petroleo
    Inventors: Patricia Pérez Romo, José Marie Maurice Julien Fripiat, Luis Miguel Rodríguez Otal, Pedro Martín Vega Merino, María de Lourdes Alejandra Guzmán Castillo, Candido Aguilar Barrera, Héctor Armendáriz Herrera, Francisco Javier Hernández Beltrán
  • Patent number: 8679999
    Abstract: Titanosilicate catalyst is used in the oxidation reactions such as allylchloride epoxidation, phenol hydroxylation, Cyclohexanone ammoximation. During the reaction the catalyst is deactivated which further decrease in the efficiency of the oxidation reactions. The present invention provides a method for an efficient regeneration of catalyst titanosilicate catalyst at low temperature below 100° C. using a gaseous mixture containing ozone, without isolating the catalyst from the reactor system.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: March 25, 2014
    Assignee: Aditya Birla Science & Technology Co. Ltd.
    Inventors: Subbareddy Kanagasabapathy, Yogesh Laxman Borle, Bir Kapoor, Arati Verma
  • Publication number: 20130277603
    Abstract: The present invention describes the method for preparing, using and recovering an absorbent material for apolar compounds or mixtures of apolar compounds, such as organic solvents, mineral oil and derivatives thereof, lubricant oils, edible oils, inter alia. The absorbent material is composed of an inorganic matrix of high porosity, low density and high mechanical resistance. This matrix is rendered water-proof, thus acquiring the property of absorbing apolar compounds or mixtures of apolar compounds.
    Type: Application
    Filed: July 14, 2011
    Publication date: October 24, 2013
    Applicant: UNIVERSIDADE FEDERAL DE MINAS GERAIS
    Inventors: Geraldo Magela De Lima, Jadson Cláudio Belchior, Geison Voga Pereira, Fabrício Vieira De Andrade, Márcio Guimarães Coelho, Daneile Santos Cavanellas Gomes, Nathália Gabriela Silva Pinheiro
  • Patent number: 8435920
    Abstract: Processes are disclosure which comprise alternately contacting an oxygen-carrying catalyst with a reducing substance, or a lower partial pressure of an oxidizing gas, and then with the oxidizing gas or a higher partial pressure of the oxidizing gas, whereby the catalyst is alternately reduced and then regenerated to an oxygenated state. In certain embodiments, the oxygen-carrying catalyst comprises at least one metal oxide-containing material containing a composition having the following formulas: (a) CexByB?zB?O?, wherein B=Ba, Sr, Ca, or Zr; B?=Mn, Co, and/or Fe; B?=Cu; 0.01<x<0.99; 0<y<0.6; 0<z<0.5; (b) Ce1-x-yNixByO2-*, wherein B=Zr, Ba, Ca, La, or K; 0.02<x<0.1; 0<y<0.1; and 0.02<*<0.15; and 1<?<2.2 and (c) coal ash either as a catalyst material itself or as a support for said unary or binary metal oxides.
    Type: Grant
    Filed: October 11, 2010
    Date of Patent: May 7, 2013
    Assignee: Eltron Research & Development, Inc.
    Inventors: James H. White, Erick J. Schutte, Sara L. Rolfe
  • Patent number: 8361919
    Abstract: Processes for the alcoholysis, inclusive of transesterification and/or disproportionation, of reactants are disclosed. The alcoholysis process may include feeding reactants and a trace amount of soluble organometallic compound to a reactor comprising a solid alcoholysis catalyst, wherein the soluble organometallic compound and the solid alcoholysis catalyst each independently comprise a Group II to Group VI element, which may be the same element in various embodiments. As an example, diphenyl carbonate may be continuously produced by performing transesterification over a solid catalyst followed by disproportionation, where a trace amount of soluble organometallic compound is fed to the transesterification reactor.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: January 29, 2013
    Assignee: Catalytic Distillation Technologies
    Inventor: J. Yong Ryu
  • Patent number: 8361923
    Abstract: A process is provided for producing a complex oxide catalyst which exhibits superior catalytic activity in a vapor phase catalytic oxidation reaction, particularly in production of unsaturated aldehyde and unsaturated carboxylic acid. The process is characterized by the steps of preparing an aqueous slurry by mixing a complex oxide containing molybdenum and cobalt with an acid and water; drying the aqueous slurry; and calcining the resulting dried solid. Preferably, the complex oxide is obtained as follows: a molybdenum- and cobalt-containing complex oxide catalyst which has been used in a vapor phase catalytic oxidation reaction is mixed with an aqueous extracting solution obtained by dissolving at least one of ammonia and an organic base in water, to thereby extract molybdenum and cobalt into the aqueous phase; and the aqueous phase is dried and is then calcined under an atmosphere of an oxidizing gas.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: January 29, 2013
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hirotsugu Kano, Eiichi Shiraishi
  • Patent number: 8187991
    Abstract: A method of regenerating adsorbent material includes providing a spent adsorbent material and contacting the adsorbent material with a solvent composition to facilitate removing oil and impurities from the spent solvent material.
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: May 29, 2012
    Assignee: General Electric Company
    Inventors: John Aibangbee Osaheni, Thomas Joseph Fyvie, Deborah Ann Haitko, Gregory Allen O'Neil, Paul Burchell Glaser
  • Patent number: 8173100
    Abstract: Catalytic system comprising at least two components: a catalyst for the hydrolysis reaction of metal borohydrides to hydrogen; and a material in solid form, the dissolution reaction of which in water is exothermic.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: May 8, 2012
    Assignee: Commisariat a l'Energie Atomique
    Inventors: Philippe Capron, Jérôme Delmas, Nathalie Giacometti, Isabelle Rougeaux
  • Patent number: 8128811
    Abstract: Methods for hydroprocessing of hydrocarbon feedstocks, including hydrodesulfurization and hydrodenitrogenation, using rejuvenated supported metallic catalysts are provided. The supported metallic catalysts comprised of a Group VIII metal, a Group VIB metal, are rejuvenated by a process making use of these metals, an organic complexing agent, and optionally an organic additive. The rejuvenation includes stripping and regeneration of a spent or partially spent catalyst, followed by impregnation with metals and at least one organic compound. The impregnated, regenerated catalysts are dried, calcined, and sulfided.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: March 6, 2012
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Stephen J. McCarthy, Chuansheng Bai, William G. Borghard, William E. Lewis
  • Publication number: 20120040822
    Abstract: The present invention refers to a method for eliminating silicon or silicon compounds that are contained in alumina based materials without destroying such alumina based materials allowing for their reutilization, its main application is being the regeneration of alumina based catalyst contaminated with silicon, which are used in hydro-treating processes in the oil industry for sulfur elimination and silicon removal from process streams. It is important to note that the procedures and/or conventional methods known so far for the elimination and removal of silicon contained in alumina based materials, use inorganic acids or their mixture in a digestion process which modifies the properties of alumina and of any other element contained in the material, thus destroying the alumina and disabling their reutilization.
    Type: Application
    Filed: December 9, 2009
    Publication date: February 16, 2012
    Applicant: INSTITUTO MEXICANO DEL PETROLEO
    Inventors: Patricia Pérez Romo, José Marie Maurice Julien Fripiat, Luis Miguel Rodríguez Otal, Pedro Martín Vega Merino, María de Lourdes Alejandra Guzmán Castillo, Candido Aguilar Barrera, Héctor Armendáriz Herrera, Francisco Javier Hernández Beltrán
  • Publication number: 20110045965
    Abstract: Processes for the alcoholysis, inclusive of transesterification and/or disproportionation, of reactants are disclosed. The alcoholysis process may include feeding reactants and a trace amount of soluble organometallic compound to a reactor comprising a solid alcoholysis catalyst, wherein the soluble organometallic compound and the solid alcoholysis catalyst each independently comprise a Group II to Group VI element, which may be the same element in various embodiments. As an example, diphenyl carbonate may be continuously produced by performing transesterification over a solid catalyst followed by disproportionation, where a trace amount of soluble organometallic compound is fed to the transesterification reactor.
    Type: Application
    Filed: October 28, 2010
    Publication date: February 24, 2011
    Applicant: CATALYTIC DISTILLATION TECHNOLOGIES
    Inventor: J. Yong Ryu
  • Publication number: 20110009614
    Abstract: Processes and reactor systems are provided for the conversion of sugars to sugar alcohols using a hydrogenation catalyst, which includes apparatus and method for in-line regeneration of the hydrogenation catalyst to remove carbonaceous deposits.
    Type: Application
    Filed: June 30, 2010
    Publication date: January 13, 2011
    Inventors: Paul George Blommel, Elizabeth M. Woods, Michael J. Werner, Aaron James Imrie, Randy D. Cortright
  • Patent number: 7811955
    Abstract: Platinum is applied on a carrier such as graphite to form a platinum catalyst. The catalyst becomes poisoned with a metal as a result of use of the catalyst in preparation of hydroxylammonium salts. A method of regenerating the catalyst dissolves the platinum and the metal in an acid. The method also adds ammonium sulfate to the acid to precipitate the platinum. The ammonium sulfate is a by-product of a commercial process to synthesize a caprolactam. Also, the method precipitates the platinum onto the carrier for reuse in the preparation of the hydroxylammonium salts and in preparation of the caprolactam.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: October 12, 2010
    Assignee: BASF SF
    Inventors: Lee Rigby, R. Merritt Sink
  • Publication number: 20100160149
    Abstract: The present invention concerns a method of activating or regenerating a hydrogen storage material which contains at least one metal hydride. The at least one metal hydride is brought into contact with an inert solvent and the inert solvent is subsequently removed again. After contacting with and removal of the inert solvent, there is not only an increase in the reaction rate but surprisingly the hydrogenation also proceeds more completely. The present method is particularly advantageous when the hydrogen storage material contains at least components which interact with one another during absorption and desorption.
    Type: Application
    Filed: December 10, 2009
    Publication date: June 24, 2010
    Applicant: GKSS-FORSCHUNGSZENTRUM GEESTHACHT GmbH
    Inventors: GAGIK BARKHORDARIAN, Claudio Pistidda, Martin Dornheim, Rüdiger Bormann
  • Publication number: 20100147771
    Abstract: The present invention relates to devices and methods for selectively removing contaminants from a crude product mixture. In an embodiment the invention includes a method for removing organic acids from a crude product mixture including contacting the crude product mixture with a metal oxide substrate, wherein free organic acids in the crude product mixture bind to the metal oxide substrate, thereby removing free organic acids and forming a refined product mixture; separating the refined product mixture from the metal oxide substrate; and removing the organic acids bound to the metal oxide substrate by contacting the metal oxide substrate with an alkyl ester composition at a temperature of greater than about 100 degrees Celsius. Other embodiments are also described herein.
    Type: Application
    Filed: August 13, 2009
    Publication date: June 17, 2010
    Inventors: Clayton V. McNeff, Larry C. McNeff, Bingwen Yan
  • Patent number: 7696119
    Abstract: A process for producing various organic carbonates by performing transesterification and disproportionation reactions in dual vapor/liquid phase mode preferably in the presence of solid catalyst composition selected from the group consisting of oxides, hydroxides, oxyhydroxides or alkoxides of two to four elements from Group IV, V and VI of the Periodic Table supported on porous material which has surface hydroxyl groups and the method of reactivating catalyst deactivated by polymer deposition by contacting the deactivated catalyst with a solution of hydroxy containing compound in a solvent such as benzene or THF.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: April 13, 2010
    Assignee: Catalytic Distillation Technologies
    Inventor: J. Yong Ryu
  • Publication number: 20090312176
    Abstract: A method of regenerating adsorbent material includes providing a spent adsorbent material and contacting the adsorbent material with a solvent composition to facilitate removing oil and impurities from the spent solvent material.
    Type: Application
    Filed: June 11, 2008
    Publication date: December 17, 2009
    Inventors: John Aibangbee Osaheni, Thomas Joseph Fyvie, Deborah Ann Haitko, Gregory Allen O'Neil, Paul Burchell Glaser
  • Patent number: 7470370
    Abstract: 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 stream through the use of a pressure filter, the combining of water with a mother liquor to recover the metal catalyst and then subjecting an aqueous mixture so formed to a single stage extraction with an extraction solvent to produce an extract stream comprising organic impurities and a raffinate stream comprising the metal catalyst.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: December 30, 2008
    Assignee: Eastman Chemical Company
    Inventors: Kenny Randolph Parker, Robert Lin
  • Publication number: 20080318763
    Abstract: Systems and methods are provided for the regeneration of adsorbent medium and the production of additional fatty acid esters, i.e., biofuel, in particular, by means of discharging adsorbed contaminants from an adsorbent medium such as an inorganic catalytic medium by methods that convert the contaminants into additional biofuel or biofuel intermediates, thereby increasing production efficiency, conserving labor, and reducing material waste and environmental contamination.
    Type: Application
    Filed: June 20, 2008
    Publication date: December 25, 2008
    Inventor: Greg Anderson
  • Publication number: 20080132404
    Abstract: A process for producing various organic carbonates by performing transesterification and disproportionation reactions in dual vapor/liquid phase mode preferably in the presence of solid catalyst composition selected from the group consisting of oxides, hydroxides, oxyhydroxides or alkoxides of two to four elements from Group IV, V and VI of the Periodic Table supported on porous material which has surface hydroxyl groups and the method of reactivating catalyst deactivated by polymer deposition by contacting the deactivated catalyst with a solution of hydroxy containing compound in a solvent such as benzene or THF.
    Type: Application
    Filed: December 14, 2007
    Publication date: June 5, 2008
    Applicant: CATALYTIC DISTILLATION TECHNOLOGIES
    Inventor: J. Yong Ryu
  • Patent number: 7282151
    Abstract: 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 stream through the use of a pressure filter, the combining of water with a mother liquor to recover the metal catalyst and then subjecting an aqueous mixture so formed to a single stage extraction with an extraction solvent to produce an extract stream comprising organic impurities and a raffinate stream comprising the metal catalyst.
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: October 16, 2007
    Assignee: Eastman Chemical Company
    Inventors: Kenny Randolph Parker, Robert Lin
  • Patent number: 7132582
    Abstract: The present invention relates to a catalytic process for preparation of isolongifolene using nanocrystalline solid super acid. This process is an eco-friendly, single step, solvent free catalytic process for the preparation of a tricyclic sesqui-terpene hydrocarbon, isolongifolene. More particularly, the present invention provides a process for the catalytic isomerisation of longifolene to iso-longifolene using nano-crystalline sulfated zirconia as a solid super acid catalyst.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: November 7, 2006
    Assignee: Council of Scientific and Industrial Research
    Inventors: Raksh Vir Jasra, Beena Tyagi, Manish Kumar Mishra
  • Patent number: 7115537
    Abstract: 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, with a higher homologous product the process involving washing said catalyst with an aromatic compound having at least one substitutent on the aromatic ring having activating characteristics with respect to the electrophilic substitution, in liquid or at least partially liquid phase.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: October 3, 2006
    Assignee: Dow Global Technologies Inc.
    Inventors: Carlo Perego, Alberto De Angelis, Otello Faris, Aldo Bosetti
  • Patent number: 7087546
    Abstract: The present invention pertains to a process for regenerating and rejuvenating an additive-based hydrotreating catalyst containing Group VIB and Group VIII hydrogenation metals. The process comprises the steps of regenerating the catalyst by contacting it with an oxygen-containing gas at a maximum temperature of 500° C., followed by rejuvenating the catalyst by contacting it with an organic additive comprising an organic compound, other than a compound that the catalyst is contacted with in the course of its use as a catalyst prior to regeneration and rejuvenation. The organic additive is incorporated into the catalyst. If necessary, the catalyst may then be dried at such a temperature that at least 50% of the additive is maintained in the catalyst. The process according to the invention makes it possible to restore the activity of a used additive-based hydrotreating catalyst to its original level, or even to improve it to above that level.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: August 8, 2006
    Assignee: Albemarle Corporation
    Inventors: Sonja Eijsbouts, Franciscus Wilhelmus Houtert, Marcel Adriaan Jansen, Tetsuro Kamo, Frans Lodewijk Plantenga
  • Patent number: 6878471
    Abstract: The present invention relates to methods for the regeneration of catalytic reactors. In particular it relates to methods for regenerating a fuel-processing catalyst while it is still being used to supply hydrogen to a fuel cell. The temperature of the catalyst may be adjusted, the air, steam or fuel feed rate may be adjusted. Alternatively, additives may be added to the feed.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: April 12, 2005
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Robert Burch, Stanislaw Edmund Golunski, Barry William Luke Southward, David Wails
  • Patent number: 6878654
    Abstract: 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 contacting the catalyst with an aqueous medium, such as an ammonium nitrate solution, an ammonium carbonate solution or an acid solution.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: April 12, 2005
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Ajit B. Dandekar, Michael Hryniszak, Jeffrey S. Beck, David L. Stern, Kathleen M. Keville
  • Patent number: 6872859
    Abstract: 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 bound to the aromatic ring, in the presence of a catalyst comprising a zeolite characterized by a spaciousness index equal to or higher than 8. The invention also relates to a method for the regeneration of the zeolitic catalyst used in this process and comprises subjecting the exhausted catalyst to hot treatment with a suitable aromatic compound containing at least one activating group, preferably the same hydroxylated aromatic compound used in the process for the preparation of bisphenols from which the exhausted catalyst derives.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: March 29, 2005
    Assignee: Enitecnologie S.p.A.
    Inventors: Carlo Perego, Alberto De Angelis
  • Patent number: 6872678
    Abstract: The present invention pertains to a process for activating a catalyst composition comprising at least one hydrogenation metal component of Group VI and/or Group VIII of the Periodic Table, and an S-containing organic additive, wherein the catalyst is contacted with hydrogen at a temperature between room temperature and about 600° C., preferably about 100-450° C., and prior to or during the contacting with hydrogen the catalyst is contacted with an organic liquid. Preferably, the contacting with the organic liquid is carried out prior to the contacting with hydrogen. The organic liquid may be a hydrocarbon with a boiling range of 150-500° C., preferably white oil, gasoline, diesel, or gas oil or mineral lube oil. It was found that the application of an organic liquid prior to or during the hydrogen treatment results in catalysts with an increased activity. The invention also comprises catalyst made by the above process and the use of such catalyst in hydrotreating.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: March 29, 2005
    Assignee: Akzo Nobel N.V.
    Inventor: Sonja Eijsbouts
  • Patent number: 6683015
    Abstract: The present invention is directed to a method for reactivating a deactivated carbonylation catalyst composition previously used in a carbonylation reaction involving an aromatic hydroxy compound, carbon monoxide and oxygen, so that the re-activated catalyst composition is effective at carbonylating an aromatic hydroxy compound in a subsequent oxidative carbonylation reaction.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: January 27, 2004
    Assignee: General Electric Company
    Inventors: John Yaw Ofori, Peter John Bonitatebus, Jr.
  • Patent number: 6680270
    Abstract: 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.
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: January 20, 2004
    Assignee: General Electric Company
    Inventors: Rudy Francois Alain Joseph Peemans, Alexey Kruglov, Sheldon Jay Shafer, Chuks O. Mbeledogu, Darlene Hope Nance, Karl Aaron Baro, Emil Markov Georgiev, Eduard Hendricus Schlarmann, Gaylord Michael Kissinger
  • Patent number: 6635595
    Abstract: The present invention relates to a process for the simultaneous regeneration of spent clay and insitu recovery of oil from spent clay and conversion of the same to alkyl esters of C1 to C8 carbon atoms by treating the spent clay with alcohols at elevated temperature and pressure.
    Type: Grant
    Filed: February 21, 2001
    Date of Patent: October 21, 2003
    Assignee: Council of Scientific & Industrial Research
    Inventors: Thengumpillil Narayana Balagopala Kaimal, Penumarthy Vijayalakshmi, Ayyagari Ananta Laxmi, Bandi Ramalinga
  • Patent number: 6558533
    Abstract: 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 aqueous solution of an oxidant and reusing the alloy for further desulfurization of additional sulfur laden liquid.
    Type: Grant
    Filed: April 13, 2001
    Date of Patent: May 6, 2003
    Assignee: W.R. Grace & Co.-Conn
    Inventors: Stephen Raymond Schmidt, Richard Franklin Wormsbecher, Robert Hibbard Harding
  • Patent number: 6521564
    Abstract: A process for the modification of a hydrogenation catalyst of the Raney nickel, Raney cobalt, nickel-on-carrier or cobalt-on-carrier type, which process includes treating the hydrogenation catalyst at temperatures of about 0° C. to about 120° C. with carbon monoxide, carbon dioxide, formaldehyde, a lower aliphatic aldehyde, an aromatic aldehyde, an aliphatic ketone, an aromatic ketone, a mixed aliphatic/aromatic ketone, glyoxal, pyruvaldehyde or glyoxylic acid as the modification agent in a liquid dispersion medium consisting of water or an organic solvent for a duration of about 15 minutes to about 24 hours. When the thus-modified catalyst is used in the hydrogenation of a nitrile to the corresponding amine, the selectivity is increased, and significantly favors the amount of the primary amine vis-à-vis the undesired secondary amine in the hydrogenation product as compared to when the corresponding unmodified catalyst is employed.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: February 18, 2003
    Assignee: Roche Vitamins, Inc.
    Inventors: Oliver Gerald Degischer, Felix Roessler
  • Publication number: 20030028062
    Abstract: Disclosed is a method of rejuvenating a molecular sieve. The method includes contacting a molecular sieve having a methanol uptake of less than 1, or a catalyst containing molecular sieve having a methanol up of less than 1, with anhydrous liquid or vapor until the methanol uptake ratio is increased by at least 10%. The rejuvenated molecular sieve or catalyst can be used to make an olefin product from an oxygenate-containing feedstock. The preferred molecular sieve is a silicoaluminophosphate (SAPO) molecular sieve.
    Type: Application
    Filed: August 2, 2002
    Publication date: February 6, 2003
    Inventors: Marcel J.G. Janssen, Cornelius W.M. Van Oorschot, Kenneth R. Clem
  • Patent number: 6498120
    Abstract: 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 anhydrous liquid or vapor until the methanol uptake index is increased by at least 10%. The rejuvenated molecular sieve or catalyst can be used to make an olefin product from an oxygenate-containing feedstock. The preferred molecular sieve is a silicoaluminophosphate (SAPO) molecular sieve.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: December 24, 2002
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Marcel J. G. Janssen, Cornelius W. M. Van Oorschot, Kenneth R. Clem
  • Patent number: 6482762
    Abstract: A method for cleaning and rejuvenating an at least partially spent de-NOx catalyst comprising a porous ceramic metal oxide material containing a vanadium oxide and coated on a metal support by cleaning the catalyst with an oxalic acid solution and by contacting the catalyst with a vanadium compound solution.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: November 19, 2002
    Assignee: Atlantic Richfield Company
    Inventors: David E. Ruffin, Ryan M. Bonderson, Andrew P. Voss
  • Publication number: 20020115875
    Abstract: The present invention relates to a novel and simple process for the simultaneous regeneration of spent clay and insitu recovery of oil from spent clay and conversion of the same to alkyl esters of C1 to C8 carbon atoms by treating the spent clay with alcohols at elevated temperature and pressure.
    Type: Application
    Filed: February 21, 2001
    Publication date: August 22, 2002
    Inventors: Thengumpillil Narayana Balagopala Kaimal, Penumarthy Vijayalakshmi, Ayyagari Ananta Laxmi, Bandi Ramalinga
  • Patent number: 6423657
    Abstract: 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 solution and water to effectuate the desorption of the pollutants adsorbed on the activated carbon. The equipment includes (A) a mixing tank for mixing given amounts of water, ethanol and sodium hydroxide solution which are supplied from the respective receptacles thereof; (B) a reactivation reactor for receiving the mixed solution from the mixing tank and subjecting the spent activated carbon filled therein to the mixed solution to effect the desorption of the pollutants adsorbed on the spent activated carbon, wherein the reactivation reactor includes a unit for regulating temperature of the mixed solution; and (C) a storage tank for receiving the reactivated carbon.
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: July 23, 2002
    Assignees: Korea Institute of Construction Technology, Daewoo Engineering & Construction Ltd., LG Construction Co., Ltd., Samsung Corporation
    Inventors: Chang Keun Wang, Sang Eun Lee, Hyun Je Oh, Ju Youn Lee, Kwang Nyoung Kim, Hyeon Yeoul Kim, Ki Seop Song, Eung Taek Lee, Hyoung Soo Hu, Young Ho Lee, Sung Min Oh
  • Patent number: 6365761
    Abstract: Process for the preparation of alkylene oxide, which process comprises passing a feed comprising an organic hydroperoxide and alkene through a bank of at least two serially connected reactors all containing a bed of heterogeneous epoxidation catalyst particles and operated in a cyclic mode, in which process: (a) the first reactor of the cyclically operated bank is put in a position further down this bank, when the activity of the epoxidation catalyst contained therein has decreased to an undesirably low level; (b) in this position the catalyst with decreased activity is contacted with the effluent from the reactor in the preceding position at a temperature which is at least 5° C. higher than the final temperature at which the catalyst was in use in the first position of the bank and for sufficient time to restore its activity to the desired level.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: April 2, 2002
    Assignee: Shell Oil Company
    Inventors: Willem Derks, Hendrik Dirkzwager, Alexander Jan Van Der Veen, Rutger Johannes Franciscus Wermeling
  • Patent number: 6281157
    Abstract: 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 citrate used as a complexing agent associated with a gluconate used both as a catalyst and a stabilizer. The disclosed bath makes it possible to tolerate large quantities of hypophosphite and is relatively long-lived. Furthermore, it can be used to prepare large quantities of Ni—P alloy per liter of solution.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: August 28, 2001
    Assignee: STMicroelectronics S.A.
    Inventors: Abdallah Tangi, Mohamed Elhark, Ali Ben Bachir, Abdellah Srhiri, Mohamed Cherkaoui, Mohamed Ebntouhami, El Mustapha Saaoudi
  • Publication number: 20010006930
    Abstract: A method for washing a spent solid catalyst is disclosed which is characterized by washing the solid catalyst used for the reaction of generating an esterified compound in a device packed with the solid catalyst, distilling the cleaning fluid in a distilling part, and circulating the fraction obtained by the distillation to an esterification reactor. According to this invention, the existing apparatus used during the process for the production of an esterified compound can be adopted without any modification, the water by-produced in the reaction for production an esterified compound and an alcohol as the raw material for esterification can be used as the cleaning fluid, and these effective components can be recovered from the cleaning fluid. Thus, the stimulation from the offensive odor and the volatile component which has heretofore posed a problem during the removal of the solid catalyst is eliminated and the safety in terms of heath and in terms of operation is secured.
    Type: Application
    Filed: December 8, 2000
    Publication date: July 5, 2001
    Inventors: Sei Nakahara, Takeshi Nishimura, Masahiro Motofuji, Masatoshi Ueoka
  • Publication number: 20010004672
    Abstract: A process for the modification of a hydrogenation catalyst of the Raney nickel, Raney cobalt, nickel-on-carrier or cobalt-on-carrier type, which process includes treating the hydrogenation catalyst at temperatures of about 0° C. to about 120° C. with carbon monoxide, carbon dioxide, formaldehyde, a lower aliphatic aldehyde, an aromatic aldehyde, an aliphatic ketone, an aromatic ketone, a mixed aliphatic/aromatic ketone, glyoxal, pyruvaldehyde or glyoxylic acid as the modification agent in a liquid dispersion medium consisting of water or an organic solvent for a duration of about 15 minutes to about 24 hours. When the thus-modified catalyst is used in the hydrogenation of a nitrile to the corresponding amine, the selectivity is increased, and significantly favors the amount of the primary amine vis-à-vis the undesired secondary amine in the hydrogenation product as compared to when the corresponding unmodified catalyst is employed.
    Type: Application
    Filed: November 30, 2000
    Publication date: June 21, 2001
    Inventors: Oliver Gerald Degischer, Felix Roessler