Patents by Inventor Hans-Jörg Wölk

Hans-Jörg Wölk has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230096662
    Abstract: A chemoenzymatic process for the preparation of 2,5-furan dicarboxylic acid includes contacting D-glucose with (i) at least two enzymes selected from the group consisting essentially of galactose oxidase, pyranose 2-oxidase, glucarate dehydratase, catalase and a combination thereof to produce an intermediate; and (ii) a heterogeneous metal catalyst to form 2,5-furan dicarboxylic acid.
    Type: Application
    Filed: February 25, 2021
    Publication date: March 30, 2023
    Applicant: Solugen, Inc.
    Inventors: Toni M. Lee, Shuai Qian, Brian F. Fisher, Phillip Wiemann, Hans-Joerg Woelk, Gaurab Chakrabarti, Sean Hunt, Konrad V. Miller
  • Patent number: 9579631
    Abstract: The present invention relates to a process for the preparation of nanocrystalline metal oxide particles comprising the steps of a) the introduction of a starting compound into a reaction chamber by means of a carrier fluid, b) the subjecting of the starting compound in a treatment zone to a pulsating thermal treatment, c) the forming of nanocrystalline metal oxide particles, d) the removal of the nanocrystalline metal oxide particles obtained in steps b) and c) from the reactor, wherein the starting compound is introduced into the reaction chamber in the form of a solution, slurry, suspension or in solid aggregate state. Further, the present compound relates to a catalyst material, obtainable by the process according to the invention, in particular a catalyst material for use in the preparation of methanol from carbon monoxide and hydrogen.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: February 28, 2017
    Assignee: Sued-Chemie IP Gmbh & Co. KG
    Inventors: Hans Jörg Wölk, Götz Burgfels, Sigrun Polier, Gernot Polier, Astrid Polier
  • Publication number: 20160339417
    Abstract: The present invention relates to a method for producing a composite material which contains a support material and an ionic liquid, as well as a composite material and its use as synthetic catalyst.
    Type: Application
    Filed: April 12, 2016
    Publication date: November 24, 2016
    Applicant: Clariant International AG
    Inventors: Normen SZESNI, Melanie Kaiser, Richard FISHER, Hans-Joerg WOELK
  • Patent number: 9365433
    Abstract: A method for the production of a nanocrystalline molybdenum mixed oxide, the use of the molybdenum mixed oxide as catalyst for chemical conversions, in particular for a conversion of acrolein to acrylic acid as well as a catalyst that contains the molybdenum mixed oxide.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: June 14, 2016
    Assignee: SUED-CHEMIE IP GMBH & CO. KG
    Inventors: Alfred Hagemeyer, Gerhard Mestl, Silvia Neumann, Hans-Jörg Wölk
  • Patent number: 9327272
    Abstract: A method for producing a composite material which contains a support material and an ionic liquid, as well as a composite material and its use as synthetic catalyst.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: May 3, 2016
    Assignee: Clariant International Ltd.
    Inventors: Normen Szesni, Melanie Kaiser, Richard Fischer, Hans-Jörg Wölk
  • Patent number: 8796173
    Abstract: A method for producing phthalic anhydride by catalytic gas-phase oxidation of o-xylene and/or naphthalene, carried out by means of a catalyst arrangement which has a first catalyst layer at the gas inlet side and at least one second catalyst layer after the first catalyst layer in the gas flow direction with different catalytic activity, wherein when the gas-phase oxidation is being carried out a lower maximum temperature is formed in the first catalyst layer than in the second catalyst layer. Furthermore, a method for producing the catalyst arrangement, as well as the catalyst arrangement itself.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: August 5, 2014
    Assignee: Süd-Chemie IP GmbH & Co. KG
    Inventors: Hans-Jörg Wölk, Gerhard Mestl
  • Patent number: 8759249
    Abstract: A method for the production of nanocrystalline nickel oxides as well as the nickel oxides produced by the method according to the invention and the use thereof as catalyst following reduction to nickel metal, in particular for hydrogenation reactions.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: June 24, 2014
    Assignee: SUED-Chemie IP GmbH & Co. KG
    Inventors: Hans-Jörg Wölk, Alfred Hagemeyer, Frank Groβmann, Silvia Neumann
  • Patent number: 8722009
    Abstract: A nanocrystalline supported or unsupported copper oxide with a residual carbon content of <10% and a BET surface area >95 m2/g. Further, a method for the production of a supported, or unsupported nanocrystalline copper oxide is disclosed, as well as the use thereof in catalysis, in particular in the steam reforming of methanol or in the hydrogenation of esters.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: May 13, 2014
    Assignee: Sued-Chemie IP GmbH & Co. KG
    Inventors: Hans-Joerg Woelk, Alfred Hagemeyer, Frank Grossmann, Oliver Wegner
  • Publication number: 20130281287
    Abstract: A nanocrystalline supported or unsupported copper oxide with a residual carbon content of <10% and a BET surface area >95 m2/g. Further, a method for the production of a supported, or unsupported nanocrystalline copper oxide is disclosed, as well as the use thereof in catalysis, in particular in the steam reforming of methanol or in the hydrogenation of esters.
    Type: Application
    Filed: June 21, 2013
    Publication date: October 24, 2013
    Inventors: Hans-Joerg Woelk, Alfred Hagemeyer, Frank Grossmann, Oliver Wegner
  • Patent number: 8480998
    Abstract: A method for the production of a nanocrystalline bismuth-molybdenum mixed oxide, the use of the bismuth-molybdenum mixed oxide as catalyst for chemical conversions, in particular for a conversion of propylene to acrolein and/or acrylic acid or of isobutylene to methacrolein and/or methacrylic acid, as well as a catalyst that contains the bismuth-molybdenum mixed oxide.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: July 9, 2013
    Assignee: Sued-Chemie IP GmbH & Co. KG
    Inventors: Alfred Hagemeyer, Oliver Wegner, Silvia Neumann, Hans-Jörg Wölk
  • Publication number: 20130041193
    Abstract: A method for producing a composite material which contains a support material and an ionic liquid, as well as a composite material and its use as synthetic catalyst.
    Type: Application
    Filed: October 27, 2010
    Publication date: February 14, 2013
    Applicant: SUED-CHEMIE AG
    Inventors: Normen Szesni, Melanie Kaiser, Richard Fischer, Hans-Jörg Wölk
  • Patent number: 8361619
    Abstract: The present invention relates to a process for the preparation of nanocrystalline mixed metal oxide particles from at least two different starting compounds, comprising the steps of a) introducing a stoichiometric mixture of the starting compounds into a reaction chamber by means of a carrier fluid, b) subjecting the starting compound to a pulsating thermal treatment in a treatment zone under a pulse in the reaction chamber, c) formation of nanocrystalline mixed metal oxide particles, d) the removal from the reactor of the nanocrystalline mixed metal oxide particles obtained in steps b) and c), wherein the stoichiometric mixture of the starting compounds takes place at a temperature of >50° C. Further, the present invention relates to a nanocrystalline mixed metal oxide, in particular for use as a catalyst, obtainable by the process according to the invention.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: January 29, 2013
    Assignee: Sud-Chemie AG
    Inventor: Hans-Jörg Wölk
  • Publication number: 20120245365
    Abstract: A method for producing phthalic anhydride by catalytic gas-phase oxidation of o-xylene and/or naphthalene, carried out by means of a catalyst arrangement which has a first catalyst layer at the gas inlet side and at least one second catalyst layer after the first catalyst layer in the gas flow direction with different catalytic activity, wherein when the gas-phase oxidation is being carried out a lower maximum temperature is formed in the first catalyst layer than in the second catalyst layer. Furthermore, a method for producing the catalyst arrangement, as well as the catalyst arrangement itself.
    Type: Application
    Filed: September 8, 2010
    Publication date: September 27, 2012
    Applicant: SUD-CHEMIE AG
    Inventors: Hans-Jörg Wölk, Gerhard Mestl
  • Publication number: 20110201847
    Abstract: A method for the production of nanocrystalline nickel oxides as well as the nickel oxides produced by the method according to the invention and the use thereof as catalyst following reduction to nickel metal, in particular for hydrogenation reactions.
    Type: Application
    Filed: May 29, 2009
    Publication date: August 18, 2011
    Inventors: Hans-Jörg Wölk, Alfred Hagemeyer, Frank Grossmann, Silvia Neumann
  • Publication number: 20110172085
    Abstract: A nanocrystalline supported or unsupported copper oxide with a residual carbon content of <10% and a BET surface area >95 m2/g. Further, a method for the production of a supported or unsupported nanocrystalline copper oxide as well as the use thereof in catalysis, in particular in the steam reforming of methanol or in the hydrogenation of esters.
    Type: Application
    Filed: May 29, 2009
    Publication date: July 14, 2011
    Applicant: Süd-Chemie AG
    Inventors: Hans-Jörg Wölk, Alfred Hagemeyer, Frank Großmann, Oliver Wegner
  • Publication number: 20110166395
    Abstract: The present invention relates to a method for the production of nanocrystalline nickel oxides as well as the nickel oxides produced by the method according to the invention and the use thereof as catalyst following reduction to nickel metal, in particular for hydrogenation reactions.
    Type: Application
    Filed: May 29, 2009
    Publication date: July 7, 2011
    Inventors: Hans-Jörg Wölk, Alfred Hagemeyer, Frank Grossmann, Silvia Neumann, Gerhard Mestl
  • Publication number: 20110160485
    Abstract: The present invention relates to a method for producing a nanocrystalline mixed oxide material containing copper and chromium as well as the mixed oxide material containing copper and chromium produced by the method according to the invention and its use as catalyst, in particular for dehydrogenating alcohols, for hydrogenation reactions, for reducing nitrocompounds, for hydrogenating carboxylic acids and for hydrogenating free fatty acids to fatty alcohols.
    Type: Application
    Filed: May 29, 2009
    Publication date: June 30, 2011
    Inventors: Hans-Jörg Wölk, Alfred Hagemeyer, Frank Grossmann
  • Publication number: 20110105790
    Abstract: A method for the production of a nanocrystalline molybdenum mixed oxide, the use of the molybdenum mixed oxide as catalyst for chemical conversions, in particular for a conversion of acrolein to acrylic acid as well as a catalyst that contains the molybdenum mixed oxide.
    Type: Application
    Filed: April 3, 2009
    Publication date: May 5, 2011
    Applicant: SUD-CHEMIE AG
    Inventors: Alfred Hagemeyer, Gerhard Mestl, Silvia Neumann, Hans-Jörg Wölk
  • Publication number: 20100137650
    Abstract: The present invention relates to a shell catalyst, a process for its preparation and also the use of the shell catalyst according to the invention.
    Type: Application
    Filed: November 24, 2009
    Publication date: June 3, 2010
    Applicant: Sud-Chemie AG
    Inventors: Hans-Jörg Wölk, Alfred Hagemeyer, Frank Grossmann, Silvia Neumann, Gerhard Mestl
  • Publication number: 20100015446
    Abstract: The present invention relates to a process for the preparation of nanocrystalline mixed metal oxide particles from at least two different starting compounds, comprising the steps of a) introducing a stoichiometric mixture of the starting compounds into a reaction chamber by means of a carrier fluid, b) subjecting the starting compound to a pulsating thermal treatment in a treatment zone under a pulse in the reaction chamber, c) formation of nanocrystalline mixed metal oxide particles, d) the removal from the reactor of the nanocrystalline mixed metal oxide particles obtained in steps b) and c), wherein the stoichiometric mixture of the starting compounds takes place at a temperature of >50° C. Further, the present invention relates to a nanocrystalline mixed metal oxide, in particular for use as a catalyst, obtainable by the process according to the invention.
    Type: Application
    Filed: September 7, 2007
    Publication date: January 21, 2010
    Applicant: SÜD-CHEMIE AG
    Inventor: Hans Jörg Wölk