Elemental Hydrogen Patents (Class 502/53)
  • Patent number: 10434506
    Abstract: A method is disclosed for activating or regenerating a Fischer Tropsch catalyst used in a gas-to-liquids process operating in recycle mode. The method permits the use of specific inert gases to adjust the mole weight of the gas so that the recycle compressor designed for normal steady state operation can also be used in the ROR method. Nitrogen and carbon dioxide are specifically excluded for the reduction steps of the ROR method as they have been demonstrated to have a negative effect on the method. Nitrogen is used in the oxidation step with small amounts of oxygen containing gas, preferably air, and may be modified with the addition of argon, helium, or carbon dioxide if the mole weight of the oxidation gas needs to be modified to satisfy the requirements of the compressor.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: October 8, 2019
    Assignee: Emerging Fuels Technology, Inc.
    Inventor: Kenneth L. Agee
  • Patent number: 10315967
    Abstract: Reactant materials for use in the synthesis of compounds comprising a non-metal and hydrogen, and methods of making and using the same are provided. The reactant materials generally comprise first and second non-metals, metals, a cation, and a transition metal, and can be formed and used in reactions occurring at relatively low-pressure conditions using heat energy that can be supplied via solar radiation. In particular, the reactant materials can be used in the synthesis of ammonia and various hydrocarbon compounds using air, water, and sunlight.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: June 11, 2019
    Assignee: Kansas State University Research Foundation
    Inventors: Ronald Michalsky, Peter Pfromm
  • Patent number: 9956552
    Abstract: We provide a process for regenerating a spent acidic ionic liquid, comprising contacting the spent acidic ionic liquid with hydrogen and without an addition of a hydrogenation catalyst; wherein a conjunct polymer content is decreased in the spent acidic ionic liquid to produce regenerated acidic ionic liquid. We also provide a process for making an alkylate gasoline blending component, comprising: a) alkylating a mixture of isoparaffins and olefins using an acidic ionic liquid and an alkyl halide or a hydrogen halide, wherein a conjunct polymer accumulates in a spent acidic ionic liquid; and b) feeding the spent acidic ionic liquid and a hydrogen, and without an addition of a hydrogenation catalyst, to a regeneration reactor operated under selected hydrogenation conditions to produce a regenerated acidic ionic liquid that is used for the alkylating, wherein the conjunct polymer in the regenerated acidic ionic liquid is decreased by at least 50 wt %.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: May 1, 2018
    Assignee: Chevron U.S.A. Inc.
    Inventors: Michael John Girgis, Huping Luo, Bong Kyu Chang, Hye-Kyung Timken, Steven Xugi Song, Michael Sean Driver
  • Patent number: 9868117
    Abstract: A method of reducing the amount of carbon monoxide present during the metal reduction step of start-up, thus, maintaining metal dispersion and improving the metal reduction and catalyst yields. Carbon monoxide formation is minimized during the start-up procedure and during the initial catalyst dryout phase in a hydrogen-containing atmosphere, gas is purged from the reactor system, either continuously at constant pressure or by a series of pressure/depressure cycles, to remove carbon monoxide. The purging is conducted at temperatures of about 30-500° C. and pressures of about ?90-5,000 kPa(g) (?0.9-50 bar(g)). In this temperature range, carbon monoxide absorbed to the surface of the metal will desorb into the hydrogen-containing atmosphere and can be removed from the system along with carbon monoxide present in the atmosphere through the purging.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: January 16, 2018
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Todd E. Detjen, Robert G. Tinger, Gary D. Mohr, David B. Looney
  • Patent number: 9782766
    Abstract: Disclosed herein are methods for regenerating metal catalysts used in the purification of inert gases for use in fiber draw furnaces and other applications. The methods described herein can regenerate metal catalysts alone or in combination with molecular sieves. The methods disclosed herein are able to prevent the formation and retention of unwanted byproducts during and after the regeneration process, thereby efficiently converting oxidized catalysts to their reduced or elemental form. Gases purified with catalysts regenerated by the methods disclosed herein, when used in fiber draw furnaces and similar applications, can lead to extended equipment lifetimes and higher-quality products due to the lack of degradation by contaminants in the gas stream.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: October 10, 2017
    Assignee: Corning Incorporated
    Inventors: Erling Richard Anderson, Stephen Mitchell Carlton, Steven Bruce Dawes, John Michael Jewell, Roger Alan Rose
  • Patent number: 9725653
    Abstract: Devices and methods for preparing oxygen-containing liquid fuel by bio-oil catalytic conversion. A device includes a biomass fast thermal cracking system for preparing bio-oil, a bio-oil oil-water separating system for separating the bio-oil into oil phase bio-oil and water phase bio-oil that is output to an oil phase bio-oil chemical chain hydrogen production system, and a water phase bio-oil catalytic hydrogenation system. The hydrogen production system outputs produced hydrogen to the water phase bio-oil catalytic hydrogenation system to prepare a liquid fuel. A method includes the steps: thermally cracking the biomass to prepare bio-oil, separating the water phase and the oil phase, producing hydrogen from the oil phase bio-oil through a chemical chain method so as to provide a hydrogen source for the water phase bio-oil to carry out two-stage catalytic hydrogenation in a slurry bed, and separating and purifying the hydrogenated products to obtain an oxygen-containing liquid fuel.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: August 8, 2017
    Assignee: SOUTHEAST UNIVERSITY
    Inventors: Rui Xiao, Huiyan Zhang, Yong Zhang, Dekui Shen
  • Patent number: 9566578
    Abstract: A method for regenerating deactivated acidic ionic liquid is described. The method involves reducing a level of free hydrochloric acid in the deactivated acidic ionic liquid in a removal zone using at least one of heat, a stripping fluid, reduced pressure, and liquid-liquid extraction to form a deactivated acidic ionic liquid having a reduced level of free hydrochloric acid; and regenerating the deactivated acidic ionic liquid having the reduced level of free hydrochloric acid.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: February 14, 2017
    Assignee: UOP LLC
    Inventors: Michael Brendel, Avram M. Buchbinder, Paul Olson, Susie C. Martins, Kaitlin M. DeSalvo, Douglas A. Nafis
  • Patent number: 9333493
    Abstract: The invention relates to a process for regenerating a catalyst used in the decarbonylation of an aldehyde, wherein the catalyst is a heterogeneous, supported catalyst containing a metal selected from the group consisting of Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt and mixtures thereof, and wherein the catalyst is subjected to a gas stream comprising hydrogen at a temperature of from 200 to 600° C., wherein substantially no oxygen is used in the regeneration process.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: May 10, 2016
    Assignee: Shell Oil Company
    Inventors: Jean-Paul Andre Marie Joseph Gishlain Lange, Sipke Hidde Wadman
  • Patent number: 9302200
    Abstract: We provide alkylation process units, one comprising: a) a hydrogenation reactor that produces a regenerated catalyst effluent; b) a fractionation unit that separates the effluent into gas and light hydrocarbon; c) a connection between the fractionation unit for transmitting the gas to the hydrogenation reactor; and d) a connection between the fractionation unit and an alkylation reactor to transmit the light hydrocarbon to the alkylation reactor.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: April 5, 2016
    Assignee: Chevron U.S.A. Inc.
    Inventors: Hye Kyung Cho Timken, Bong-Kyu Chang
  • Patent number: 9096618
    Abstract: A method of regenerating a silyl or boryl compound is described. The silyl or boryl compound is contained in an organic phase with conjunct polymer. The silyl or boryl compound is chemically reduced with a hydrogen containing compound in a silane or borane regeneration zone under regeneration conditions to form at least one regenerated silane or borane compound and a metal salt compound. The regenerated silane or borane compound is recovered.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: August 4, 2015
    Assignee: UOP LLC
    Inventors: Susie Martins, Douglas A. Nafis, Erin M. Broderick
  • Patent number: 9074148
    Abstract: A system including at least one hydrogen extraction unit comprising an inlet for a synthesis feedgas from a synthesis feedgas line and adapted to remove at least one hydrogen-rich gas and at least one hydrogen-lean gas from the synthesis feedgas to yield a refined synthesis gas; and at least one hydrocarbon synthesis reactor, at least one dedicated activation reactor, or both, wherein the at least one hydrocarbon synthesis reactor is fluidly connected with the at least one hydrogen extraction unit and configured to provide liquid hydrocarbons and a first byproduct gas from a synthesis reactor feedstream comprising at least a portion of the refined synthesis gas; and wherein the at least one dedicated activation reactor is fluidly connected with the at least one hydrogen extraction unit, the at least one hydrocarbon synthesis reactor, or both, and configured for activation of hydrocarbon synthesis catalyst via an activation gas.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: July 7, 2015
    Assignee: RES USA, LLC
    Inventors: Sergio Mohedas, Mark Ibsen
  • Patent number: 8969231
    Abstract: A method of producing an alumina-supported cobalt catalyst for use in a Fischer-Tropsch synthesis reaction, which comprises: calcining an initial ?-alumina support material at a temperature to produce a modified alumina support material; impregnating the modified alumina support material with a source of cobalt; calcining the impregnated support material, activating the catalyst with a reducing gas, steam treating the activated catalyst, and activating the steam treated catalyst with a reducing gas.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: March 3, 2015
    Assignee: GTL.FI AG
    Inventors: Erling Rytter, Sigrid Eri, Rune Myrstad, Odd Asbjørn Lindvåg
  • Publication number: 20150018438
    Abstract: The present invention relates to: a catalyst activation method for Fischer-Tropsch synthesis; a catalyst regeneration method for Fischer-Tropsch synthesis; and a method for producing a liquid or solid hydrocarbon by using the Fischer-Tropsch synthesis reaction. The temperatures required for a metal carbide producing and activating reaction is markedly lower than existing catalyst activation temperatures, and the catalyst can be activated under conditions that are the same as Fischer-Tropsch synthesis reaction conditions, and thus there is no need for separate reduction equipment in the reactor, and a Fischer-Tropsch synthesis catalyst which has been used for a long time can be regenerated within the reactor without the catalyst being isolated or extracted from the reactor.
    Type: Application
    Filed: March 7, 2013
    Publication date: January 15, 2015
    Inventors: Kyoung Su Ha, Geun Jae Kwak, Jae Hoon Jung, Joo Young Cheon, Min Hee Woo, Yun Jo Lee, Ki Won Jun
  • Patent number: 8889579
    Abstract: A process is presented for the management of sulfur on a catalyst. The catalyst is a dehydrogenation catalyst, and sulfur accumulates during the dehydrogenation process. Sulfur compounds are stripped from the spent catalyst and the catalyst is cooled before the regeneration process. The process includes controlling the amount of sulfur that needs to be removed from the catalyst before regeneration.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: November 18, 2014
    Assignee: UOP LLC
    Inventors: Laura E. Leonard, Gregory J. Gajda, Steven C. Kozup
  • Patent number: 8883866
    Abstract: A method for continuous production of hydrocarbons from synthesis gas in the presence of a cobalt-based catalyst which comprises a step of providing synthesis gas from a source (1) of synthesis gas in a Fischer-Tropsch synthesis reactor (4). The method also includes the following steps: a) conditioning of the catalyst in reduced state in a conditioning reactor (2) by contact with a flow of reducing gas from a synthesis gas source supplying the synthesis reactor, the reducing conditioning gas comprising carbon monoxide (CO) or a mixture comprising hydrogen (H2) and carbon monoxide (CO), the H2/CO molar ratio of which is between 0.1 and 0.9, at a temperature between 200 and 500° C., and a total pressure between 0.1 and 5 MPa and under a gas flow between 1 and 20 NI/h/g of catalyst to be treated, b) supply of reduced catalyst conditioned in step a) to the synthesis reactor (4).
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: November 11, 2014
    Assignee: IFP Energies Nouvelles
    Inventors: Marie-Claire Marion, Fabrice Diehl, Francois Hugues
  • Publication number: 20140296058
    Abstract: A process and apparatus is presented for the removal of sulfur from a catalyst. The catalyst is a dehydrogenation catalyst, and sulfur accumulates during the dehydrogenation process. The sulfur is removed before the catalyst is regenerated to prevent the formation of undesirable sulfur oxide compounds created during regeneration. The catalyst, during regeneration, includes redispersion of a metal on the catalyst, and removal of sulfur oxides overcomes the interference with chloride retention and metal redispersion in the regeneration process.
    Type: Application
    Filed: March 18, 2014
    Publication date: October 2, 2014
    Applicant: UOP LLC
    Inventors: Paul A. Sechrist, Laura E. Leonard
  • Patent number: 8809215
    Abstract: A process for regenerating a spent cobalt Fischer-Tropsch synthesis catalyst includes subjecting a spent particulate cobalt Fischer-Tropsch synthesis catalyst sequentially to a dewaxing treatment, an oxidation treatment at a pressure of 4 to 30 bar(a) and a reduction treatment, thereby regenerating the catalyst.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: August 19, 2014
    Assignee: Sasol Technology (Proprietary) Limited
    Inventors: Jan Van De Loosdrecht, Abdool Muthalib Saib
  • Patent number: 8802912
    Abstract: The present invention provides a method of increasing stability of a catalyst used in a dehydrogenation process. The method includes storing fresh catalyst in a reduction zone, passing a gas through the reduction zone, introducing hydrocarbons and hydrogen gas into a reactor positioned downstream from the reduction zone to facilitate a dehydrogenation reaction, and replenishing spent catalyst in the reactor with fresh catalyst from the reduction zone. The gas has a moisture content at or below about 4000 ppmv and a temperature at or below about 290° C. The reactor includes catalyst for increasing the rate of the dehydrogenation reaction. The moisture content of the gas may be reduced to at or below about 4000 ppmv by passing the gas through a drier or by using an inert gas stream. The temperature of the gas may also be reduced.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: August 12, 2014
    Assignee: UOP LLC
    Inventors: Jeffery Pieper, Wei Pan, Dean Rende, Gary Malott
  • Patent number: 8772035
    Abstract: A process for determining ionic liquid catalyst deactivation including (a) collecting at least one sample of an ionic liquid catalyst; (b) hydrolyzing the at least one sample to provide at least one hydrolyzed sample; (c) titrating the at least one hydrolyzed sample with a basic reagent to determine a volume of the basic reagent necessary to neutralize a Lewis acid species of the ionic liquid catalyst; and (d) calculating the acid content of the at least one sample from the volume of basic reagent determined in step (c) is described. Processes incorporating such a process for determining ionic liquid catalyst deactivation are also described. These processes are an alkylation process, a process for controlling ionic liquid catalyst activity in a reaction producing by-product conjunct polymers, and a continuous process for maintaining the acid content of an ionic liquid catalyst at a target acid content in a reaction producing by-product conjunct polymers.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: July 8, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Hye Kyung Timken, Annie T. Pathiparampil
  • Patent number: 8735310
    Abstract: To improve stability of catalytic performance, an aromatizing catalyst for converting lower hydrocarbons into aromatic compounds is regenerated. A regeneration process of the aromatizing catalyst according to the present invention includes the steps of: (a) reacting the aromatizing catalyst with a hydrogen gas in an atmosphere containing the hydrogen gas after using the aromatizing catalyst in an aromatizing reaction for converting lower hydrocarbons into aromatic compounds; (b) decreasing a temperature of the atmosphere containing the hydrogen gas reacted with the aromatizing catalyst, by supplying one of an inert gas and a reducing gas to the atmosphere; (c) reacting the aromatizing catalyst reacted with this inert gas, with an oxidizing gas; and (d) reacting the aromatizing catalyst reacted with the oxidizing gas, with a reducing gas.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: May 27, 2014
    Assignee: Meidensha Corporation
    Inventors: Hongtao Ma, Yuji Ogawa
  • Patent number: 8716160
    Abstract: This invention relates to the field of Fischer-Tropsch catalysis, in particular to activation of a Fischer-Tropsch catalyst. More particularly the invention relates to a method of activating an iron based Fischer-Tropsch catalyst which includes iron in a positive oxidation state by contacting in a reactor said iron based catalyst with a reducing gas selected from the group consisting of CO and a combination of H2 and CO; at a temperature of at least 245° C. and below 280° C.; at a reducing gas pressure of above 0.5 MPa and not more than 2.2 MPa; and at a GHSV of total gas fed to the reactor of at least 6000 ml(N)/g cat/h, thereby reducing the iron that is in a positive oxidation step in the catalyst.
    Type: Grant
    Filed: August 5, 2008
    Date of Patent: May 6, 2014
    Assignee: Sasol Technology (PTY) Limited
    Inventors: Johannes Jacobus Huyser, Matthys Josephus Janse van Vuuren, Ryno Kotze
  • Patent number: 8697929
    Abstract: The invention concerns a xylenes isomerization process for the production of equilibrium or near-equilibrium xylenes. The process utilizes a catalyst comprising HZSM-5 or MCM-49 and process conditions including a temperature of less than 295° C. and a pressure sufficient to maintain the xylenes in liquid phase. In embodiments, the process can be operated in a continuous mode with ppm levels of dissolved H2 in the feed and in other embodiments in a cyclic mode without the H2 in feed but with periodic regenerations using a feed having low ppm levels of H2.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: April 15, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John Di-Yi Ou, April D. Ross, Doron Levin, Mohan Kalyanaraman, Wenyih Frank Lai
  • Patent number: 8658426
    Abstract: A process for determining ionic liquid catalyst deactivation including (a) collecting at least one sample of an ionic liquid catalyst; (b) hydrolyzing the at least one sample to provide at least one hydrolyzed sample; (c) titrating the at least one hydrolyzed sample with a basic reagent to determine a volume of the basic reagent necessary to neutralize a Lewis acid species of the ionic liquid catalyst; and (d) calculating the acid content of the at least one sample from the volume of basic reagent determined in step (c) is described. Processes incorporating such a process for determining ionic liquid catalyst deactivation are also described. These processes are an alkylation process, a process for controlling ionic liquid catalyst activity in a reaction producing by-product conjunct polymers, and a continuous process for maintaining the acid content of an ionic liquid catalyst at a target acid content in a reaction producing by-product conjunct polymers.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: February 25, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Hye-Kyung Timken, Annie T. Pathiparampil
  • Patent number: 8648007
    Abstract: An apparatus and method for vaporizing and transporting an alkali metal salt is shown. The apparatus has a first conduit capable of transporting an alkali metal salt solution and a second conduit in fluid communication with the first conduit, the second conduit capable of transporting steam so that the alkali metal salt is dissipated into the steam forming a solution that can be transported, such as to a remote reaction zone. The solution can be transported via a third conduit that is capable of being heated by a heat source. The method can be used to add a promoter to a dehydrogenation catalyst during a dehydrogenation reaction.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: February 11, 2014
    Assignee: Fina Technology, Inc.
    Inventors: Joseph E. Pelati, James R. Butler, Hollie Craig
  • Patent number: 8647999
    Abstract: A method for manufacturing a catalyst, which comprises regenerating a catalyst comprising a CHA zeolite as an active ingredient and having an ethylene conversion lowered through reaction of producing propylene by bringing into contact with ethylene in a vapor phase, by bringing the catalyst into contact with a gas which does not comprise oxygen and comprises hydrogen having a hydrogen partial pressure of 0.01 MPa or more as an absolute pressure thereof.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: February 11, 2014
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Mikio Hayashi, Masahiro Hara, Masashi Yamaguchi, Yumiko Yoshikawa, Takahiko Takewaki, Tohru Setoyama, Naoyuki Sakamoto
  • Patent number: 8623777
    Abstract: This disclosure relates to a method for rejuvenating a catalyst, comprising contacting the catalyst with a gaseous feedstock at rejuvenation conditions for at least one hour to form a rejuvenated catalyst and a gaseous product, wherein the catalyst comprises at least 10 wt. % of a molecular sieve, wherein the catalyst prior to the contacting step comprises from 0.001 wt. % to 45 wt. % of hydrocarbons and 0.001 to 10 wt.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: January 7, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Terry Eugene Helton, Vijay Nanda, Wei-Ping Tai, Teresa Ann Jurgens-Kowal, Kathleen Marie Keville
  • Publication number: 20130316893
    Abstract: Disclosed is a method for regenerating a hydrogenation catalyst. More specifically, disclosed is a method for regenerating a hydrogenation catalyst poisoned during hydrogenation of a hydroformylation product for preparation of alcohol by stopping hydrogenation in a hydrogenation stationary phase reactor in which the hydrogenation catalyst is set and flowing hydrogen gas under a high temperature normal pressure. The method has an effect in that the poisoned hydrogenation catalyst can be efficiently recovered through a simple process.
    Type: Application
    Filed: August 2, 2013
    Publication date: November 28, 2013
    Applicant: LG CHEM, LTD.
    Inventors: Dae Chul KIM, Sung Shik Eom, Dong-Hyun Ko, Moo Ho Hong, O Hak Kwon
  • Publication number: 20130287664
    Abstract: A hydrocarbon selective catalytic reduction (HC-SCR) catalyst is regenerated using a nitrogen-based reductant agent. The HC-SCR catalyst is in communication with a power system such as an internal combustion engine and receives exhaust gasses from the internal combustion engine. Sulfur in the exhaust gasses may deactivate the HC-SCR catalyst by sulfur oxides forming thereon. To remove the sulfur oxides, a nitrogen-based reductant agent is introduced to the exhaust gasses. The nitrogen-based reductant agent decomposes to nitrogen oxides and hydrogen. The hydrogen reacts with the sulfur oxides to form hydrogen sulfides thereby removing the sulfur oxides from the HC-SCR catalyst.
    Type: Application
    Filed: April 26, 2012
    Publication date: October 31, 2013
    Applicant: Caterpillar Inc.
    Inventor: Praveen Chavannavar
  • Publication number: 20130252801
    Abstract: A process is presented for the management of sulfur on a catalyst. The catalyst is a dehydrogenation catalyst, and sulfur accumulates during the dehydrogenation process. Sulfur compounds are stripped from the spent catalyst and the catalyst is cooled before the regeneration process. The process includes controlling the amount of sulfur that needs to be removed from the catalyst before regeneration.
    Type: Application
    Filed: March 20, 2012
    Publication date: September 26, 2013
    Applicant: UOP LLC
    Inventors: Laura E. Leonard, Gregory J. Gajda, Steven C. Kozup
  • Patent number: 8530713
    Abstract: The present invention relates to a process for nonoxidative dehydroaromatization of aliphatic hydrocarbons by converting a reactant stream comprising aliphatic hydrocarbons in the presence of a catalyst which comprises at least one metallosilicate as a support, at least one element selected from the group of Mo, W and Re as an active component and at least one further transition metal which is not a noble metal as a dopant, wherein the catalyst is regenerated regularly with hydrogen under nonoxidative conditions. The further transition metal used is preferably Fe, Ni, Cu and Co.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: September 10, 2013
    Assignee: BASF SE
    Inventors: Frank Kiesslich, Joana Coelho Tsou, Alexander Schulz
  • Patent number: 8524623
    Abstract: A process for regenerating a spent ionic liquid catalyst including (a) applying a voltage across one or more pairs of electrodes immersed in a spent ionic liquid catalyst comprising conjunct polymer-metal halide complexes to provide freed conjunct polymers and a regenerated ionic liquid catalyst; and (b) separating the freed conjunct polymers from the regenerated ionic liquid catalyst is described. An alkylation process incorporating the regeneration process is also described.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: September 3, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Hye-Kyung Timken, Saleh Elomari, Thomas V. Harris, James N. Ziemer
  • Patent number: 8507396
    Abstract: A process for regenerating a used acidic catalyst which has been deactivated by conjunct polymers by removing the conjunct polymers so as to increase the activity of the catalyst is disclosed. Methods for removing the conjunct polymers include addition of a basic reagent and alkylation. The methods are applicable to all acidic catalysts and are described with reference to certain ionic liquid catalysts.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: August 13, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Saleh Elomari, Thomas V. Harris
  • Patent number: 8440357
    Abstract: Systems that facilitate operating proton exchange membrane (PEM) fuel cells are provided. The systems employ a fuel supply component that supplies fuel to the proton exchange membrane fuel cell; and a regeneration component that provides a reducing agent comprising a mixture of hydrogen and nitrogen, or a reducing plasma to a cathode catalyst of the proton exchange membrane fuel cell to reduce the cathode catalyst.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: May 14, 2013
    Assignee: Spansion LLC
    Inventors: Tim Z. Hossain, Daniel E. Posey
  • 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: 8383544
    Abstract: Nitrogen oxide storage catalysts are used to remove the nitrogen oxides present in the lean exhaust gas of lean-burn engines. As a result of the stress due to high temperatures in vehicle operation, they are subject to thermal aging processes which affect both the nitrogen oxide storage components and the noble metals present as catalytically active components. The present invention provides a process with which the catalytic activity of a nitrogen oxide storage catalyst which comprises, in addition to platinum as a catalytically active component, basic compounds of strontium and/or barium on a support material comprising cerium oxide, said catalytic activity being lost owing to the thermal aging process, can be at least partly restored. The two-stage process is based on the fact that strontium and/or barium compounds formed during the thermal aging with the support material, which also comprise platinum, are recycled to the catalytically active forms by controlled treatment with specific gas mixtures.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: February 26, 2013
    Assignee: Umicore AG & Co., KG
    Inventors: Stephan Eckhoff, Meike Wittrock, Ulrich Goebel, Ina Grisstede, Ruediger Hoyer, Wilfried Mueller, Thomas Kreuzer, Maria Cristina Casapu, Jan-Dierk Grunwaldt, Marek Maciejewski, Aflons Baiker
  • Patent number: 8329606
    Abstract: Process for the in-situ regeneration of a zeolite catalyst in a carbonylation process for the production of at least one of methyl acetate and acetic acid. The process is carried out by (a) contacting a carbonylatable reactant selected from methanol, dimethyl ether and dimethyl carbonate and carbon monoxide in a reactor with a zeolite catalyst and recovering a product stream containing at least one of methyl acetate and acetic acid from the reactor, (b) ceasing contact of the catalyst with the carbonylatable reactant, (c) regenerating the catalyst with a regenerating gas selected from hydrogen or a mixture of hydrogen and carbon monoxide at a temperature in the range 250 to 600 C, and (d) terminating the hydrogen regenerating step and resuming contact of the catalyst with the carbonylatable reactant and carbon monoxide.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: December 11, 2012
    Assignee: BP Chemicals Limited
    Inventors: Edo Johann Becker, Evert Jan Ditzel, Harry Kaiser, George Ernest Morris, Mark Stephen Roberts, Stephan Andreas Schunk, Martin Smit, John Glenn Sunley
  • Patent number: 8318125
    Abstract: A catalyst having decreased activity is subjected to a contact treatment with a reducing gas containing carbon monoxide and/or hydrogen. Also, the catalyst can be effectively activated by being treated by contacting with an oxidizing gas after having been treated by contacting with the reducing gas. As the catalyst for production of chlorine, a ruthenium catalyst, particularly a catalyst containing ruthenium oxide is suitably activated.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: November 27, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Youhei Uchida, Kohei Seki
  • Publication number: 20120203048
    Abstract: A method for manufacturing a catalyst, which comprises regenerating a catalyst comprising a zeolite as an active ingredient and having an ethylene conversion lowered through reaction of producing propylene by bringing into contact with ethylene in a vapor phase, by bringing the catalyst into contact with a gas which does not comprise oxygen and comprises hydrogen having a hydrogen partial pressure of 0.01 MPa or more as an absolute pressure thereof.
    Type: Application
    Filed: February 10, 2012
    Publication date: August 9, 2012
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Mikio HAYASHI, Masahiro HARA, Masashi YAMAGUCHI, Yumiko YOSHIKAWA, Takahiko TAKEWAKI, Tohru SETOYAMA, Naoyuki SAKAMOTO
  • Patent number: 8236196
    Abstract: Some or all of the needs above can be addressed by embodiments of the invention. According to embodiments of the invention, systems and methods for facilitating hydrogen storage using naturally occurring nanostructure assemblies can be implemented. In one embodiment, a method for storing hydrogen can be provided. The method can include providing diatoms comprising diatomaceous earth or diatoms from a predefined culture. In addition, the method can include heating the diatoms in a sealed environment in the presence of at least one of titanium, a transition metal, or a noble metal to provide a porous hydrogen storage medium. Furthermore, the method can include exposing the porous hydrogen storage medium to hydrogen. In addition, the method can include storing at least a portion of the hydrogen in the porous hydrogen storage medium.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: August 7, 2012
    Assignee: Microbes Unlimited, LLC
    Inventor: Carl B. Fliermans
  • Publication number: 20120136173
    Abstract: The instant invention provides a process for improving catalytic activity of catalyst systems for reductive amination of aliphatic cyanoaldehydes to aliphatic diamines. The process for improving catalytic activity of catalyst systems for reductive amination of aliphatic cyanoaldehydes to aliphatic diamines comprises the steps of: (1) feeding ammonia, optionally hydrogen, and optionally one or more solvents over one or more heterogeneous metal based catalyst systems having a reduced catalytic activity for a period of greater than 1 hour at a temperature in the range of from 50° C. to 500° C.; wherein said one or more heterogeneous metal based catalyst systems have a yield of less than 90 percent based on the molar conversion of cyanoaldehydes to diamines; and (2) thereby improving the catalytic activity of said one or more heterogeneous metal based catalyst systems.
    Type: Application
    Filed: July 30, 2010
    Publication date: May 31, 2012
    Applicant: Dow Global Technologies LLC
    Inventors: Daniel A. Hickman, Shawn D. Feist, Erich J. Molitor, David C. Molzahn, Stacie Santhany, Abraham D. Schuitman
  • Patent number: 7981825
    Abstract: Systems and methods that facilitate operating proton exchange membrane (PEM) fuel cells are provided. The methods can involve contacting a reducing agent comprising a mixture of hydrogen and nitrogen, or a reducing plasma with a cathode catalyst of a proton exchange membrane fuel cell to reduce the cathode catalyst. The systems employ a fuel supply component that supplies fuel to the proton exchange membrane fuel cell; and a regeneration component that provides a reducing agent comprising a mixture of hydrogen and nitrogen, or a reducing plasma to a cathode catalyst of the proton exchange membrane fuel cell to reduce the cathode catalyst.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: July 19, 2011
    Assignee: Spansion LLC
    Inventors: Tim Z. Hossain, Daniel E. Posey
  • Patent number: 7955999
    Abstract: Disclosed are a system and an apparatus for regenerating an ionic liquid catalyst, which has been deactivated by conjunct polymers during any type of reaction producing conjunct polymers as a by-product, for example, isoparaffin-olefin alkylation. The system and apparatus are designed such that solvent extraction of conjunct polymers, freed from the ionic liquid catalyst through its reaction with aluminum metal, occurs as soon as the conjunct polymers de-bond from the ionic liquid catalyst.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: June 7, 2011
    Assignee: Chevron U.S.A. Inc.
    Inventors: Huping Luo, Moinuddin Ahmed, Krishniah Parimi, Bong-Kyu Chang
  • Publication number: 20110118105
    Abstract: The disclosure relates to apparatus, systems, and methods (a) for performing catalytic reactions using a fixed-bed catalyst (e.g., packed particulate bed or catalyst supported on a monolithic substrate) and (b) for regenerating the catalytic activity of the catalyst. An autothermal reformation (ATR) reaction system is described for illustrative purposes, although the apparatus, systems, and methods can be applied more generally to other catalytic cracking/reformation reaction systems and other catalytic reaction systems, in particular reaction systems in which carbon-based and/or sulfur-based catalyst contaminants are produced during system operation.
    Type: Application
    Filed: November 17, 2010
    Publication date: May 19, 2011
    Applicant: The Regents of the university of Michigan
    Inventors: Johannes Schwank, Steven Edmund
  • Patent number: 7884045
    Abstract: A process for regenerating a used acidic ionic liquid catalyst, comprising: a. contacting the catalyst and hydrogen with a supported hydrogenation catalyst under hydrogenation conditions; and b. recovering a conjunct polymer that is a clear and colorless oil from the catalyst. A process for regenerating a used acidic ionic liquid catalyst which has been deactivated by conjunct polymers comprising the steps of contacting the used catalyst and hydrogen with a supported hydrogenation catalyst in a reaction zone under hydrogenation conditions in the presence of an inert hydrocarbon in which saturated conjunct polymers are soluble for a time sufficient to hydrogenate at least a portion of the conjunct polymers; and recovering the saturated conjunct polymers. Also, a process comprising: contacting the used acidic ionic liquid catalyst and hydrogen with a hydrogenation catalyst comprising a hydrogenation component under hydrogenation conditions; and recovering a conjunct polymer that is a clear and colorless oil.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: February 8, 2011
    Assignee: Chevron U.S.A. Inc.
    Inventors: Thomas V. Harris, Saleh Elomari
  • 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: 7863341
    Abstract: The present invention discloses a process for the preparation of syngas from two sources with different hydrogen: carbon ratios, the first source having a low hydrogen:carbon ratio including any one or a combination of coal, brown coal, peat, bitumen and tar sands, and the second source having a high hydrogen:carbon ratio including any one or a combination of natural gas, associated gas and coal bed methane. The sources are converted to syngas and then combined to provide syngas with an optimum hydrogen:carbon monoxide ratio for use in a Fischer-Tropsch process.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: January 4, 2011
    Assignee: Shell Oil Company
    Inventor: Arold Marcel Albert Routier
  • Publication number: 20100311567
    Abstract: A process for the in-situ regeneration of a zeolite catalyst in a carbonylation process for the production of at least one of methyl acetate and acetic acid by contacting methanol, dimethyl ethyl or dimethyl carbonate with carbon monoxide in the presence of a zeolite catalyst, ceasing contact of the catalyst with the reactant, regenerating the catalyst with a regenerating gas selected from hydrogen or a mixture of hydrogen and carbon monoxide at a temperature in the range 250 to 600° C., terminating the hydrogen regenerating step and resuming contact of the catalyst with the reactant and carbon monoxide.
    Type: Application
    Filed: December 16, 2008
    Publication date: December 9, 2010
    Inventors: Edo Johann Becker, Evert Jan Ditzel, Harry Kaiser, George Ernest Morris, Mark Stephen Roberts, Stephen Andreas Schunk, Martin Smit, John Glenn Sunley
  • Publication number: 20100300077
    Abstract: Nitrogen oxide storage catalysts are used to remove the nitrogen oxides present in the lean exhaust gas of lean-burn engines. As a result of the stress due to high temperatures in vehicle operation, they are subject to thermal aging processes which affect both the nitrogen oxide storage components and the noble metals present as catalytically active components. The present invention provides a process with which the catalytic activity of a nitrogen oxide storage catalyst which comprises, in addition to platinum as a catalytically active component, basic compounds of strontium and/or barium on a support material comprising cerium oxide, said catalytic activity being lost owing to the thermal aging process, can be at least partly restored. The two-stage process is based on the fact that strontium and/or barium compounds formed during the thermal aging with the support material, which also comprise platinum, are recycled to the catalytically active forms by controlled treatment with specific gas mixtures.
    Type: Application
    Filed: April 16, 2008
    Publication date: December 2, 2010
    Inventor: Stephan Eckhoff
  • Publication number: 20100304955
    Abstract: A process for regenerating a spent cobalt Fischer-Tropsch synthesis catalyst includes subjecting a spent particulate cobalt Fischer-Tropsch synthesis catalyst sequentially to a dewaxing treatment, an oxidation treatment at a pressure of 4 to 30 bar(a) and a reduction treatment, thereby regenerating the catalyst.
    Type: Application
    Filed: May 9, 2008
    Publication date: December 2, 2010
    Applicant: Sasol Technology (Proprietary) Limited
    Inventors: Jan Van De Loosdrecht, Abdool Muthalib Saib
  • Publication number: 20100292071
    Abstract: A new process for producing a SAPO molecular sieve is disclosed wherein a mixture of a P source with an Al source is subjected to a digestion step under stirring before adding a Si source and a template. The slurry resulting after addition of all chemicals is subjected to a pH adjustment followed by the usual hydrothermal treatment at higher temperature in an autoclave. In this way, very pure highly crystalline SAPO molecular sieves such as SAPO-34 are obtained with a very high yield. In addition, the SAPOs produced this way have an exceptional activity in the dehydration reactions and can be employed as a active component of catalysts for the production of valuable dehydration products from methanol such as, but not limited to, olefins and dimethylether (DME).
    Type: Application
    Filed: June 30, 2008
    Publication date: November 18, 2010
    Applicant: CASALE CHEMICALS S.A.
    Inventors: Cristina Ferrini, Daniel Herein, David Linke, Uwe Rodemerck, Evgeny Kondratenko