Patents by Inventor Andre RITTERMEIER

Andre RITTERMEIER 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: 20210154657
    Abstract: A process is described for regenerating a catalyst comprising ruthenium or ruthenium compounds, which has been poisoned by sulfur compounds, in which the catalyst, optionally at elevated temperature, is subjected to treatment with a hydrogen halide, particularly a gas stream comprising hydrogen chloride, under non-oxidative conditions and additionally, optionally at reduced temperature, to an at least two-stage oxidative post-treatment.
    Type: Application
    Filed: May 14, 2018
    Publication date: May 27, 2021
    Applicant: Covestro Deutschland AG
    Inventors: Andre RITTERMEIER, Michael VENZ, Thomas BURBACH, Timm SCHMIDT, Tim LODDENKEMPER, Frank GERHARTZ, Walther MÜLLER
  • Publication number: 20200208283
    Abstract: The invention relates to a gas diffusion electrode for reducing carbon dioxide, having a special catalyst morphology (silver in the form of agglomerated nanoparticles having a BET surface area of at least 2 m2/g), and to an electrolysis device. The gas diffusion electrode comprises at least one carrier and a porous coating on the basis of an electrochemically active porous silver catalyst and a hydrophobic material. The invention further relates to a production method for the gas diffusion electrode and to the use thereof as a carbon dioxide GDE in e.g. chlorine electrolysis.
    Type: Application
    Filed: June 19, 2018
    Publication date: July 2, 2020
    Inventors: Andre RITTERMEIER, Michael VENZ, Stefanie EIDEN, Thomas BURBACH
  • Publication number: 20190210875
    Abstract: The invention relates to a method for the production of chlorine by means of photocatalytic oxidation of gaseous hydrogen chloride with oxygen as an oxidizing agent, in which the reaction is started on the surface of a photocatalyst by the action of UV radiation in a selective energy range.
    Type: Application
    Filed: May 9, 2017
    Publication date: July 11, 2019
    Inventors: Andre RITTERMEIER, Thomas BURBACH
  • Publication number: 20190194018
    Abstract: The present invention relates to a method and a system for separating and treating impurities from a hydrogen chloride liquid mixture, and particularly relates to a method and a system for separating and treating impurities from a hydrogen chloride liquid mixture produced from the process for preparing isocyanate with phosgenation.
    Type: Application
    Filed: June 30, 2017
    Publication date: June 27, 2019
    Applicant: Covestro Deutschland AG
    Inventors: Andre RITTERMEIER, Rainer HELLMICH, Alfred SOPPE, Luyan WU, Micky QIAN, Peter LEHNER, Jürgen BITTNER, Friedhelm STEFFENS, Henrike FINKE, Eric JAKOBS
  • Publication number: 20190023568
    Abstract: The invention relates to known catalysts which contain cerium or other catalytically active components for producing chlorine by means of a catalytic gas phase oxidation of hydrogen chloride with oxygen. A catalyst material is described for producing chlorine by means of a catalytic gas phase oxidation of hydrogen chloride with oxygen, wherein the catalyst comprises at least oxide compounds of the cerium as active components and zirconium dioxide microparticles as the carrier components, and the catalyst is characterized by a particularly high yield, measured in kgCl2/kgKA T·h, based on the mass of the catalyst.
    Type: Application
    Filed: February 3, 2017
    Publication date: January 24, 2019
    Inventors: Andre RITTERMEIER, Michael VENZ