Patents by Inventor Tobias WEINLAND

Tobias WEINLAND 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: 20230144424
    Abstract: A process for producing a catalytically active multielement oxide comprising the elements Mo, W, V and Cu, wherein at least one source of the elemental constituents W of the multielement oxide is used to produce an aqueous solution, the resultant aqueous solution is admixed with sources of the elemental constituents Mo and V of the multielement oxide, drying of the resultant aqueous solution produces a powder P, the resultant powder P is optionally used to produce geometric shaped precursor bodies, and the powder P is or the geometric shaped precursor bodies are subjected to thermal treatment to form the catalytically active composition, wherein the aqueous solution used for drying comprises from 1.6% to 5.0% by weight of W and from 7.2% to 26.0% by weight of Mo, based in each case on the total amount of aqueous solution.
    Type: Application
    Filed: April 12, 2021
    Publication date: May 11, 2023
    Inventors: Kazuhiko AMAKAWA, Samira PARISHAN, Christian WALSDORFF, Patrick HUBACH, Tobias WEINLAND
  • Publication number: 20230114770
    Abstract: A process for producing a silver-based epoxidation catalyst, comprising i) impregnating a particulate porous refractory support with a first aqueous silver impregnation solution comprising silver ions and an aminic complexing agent selected from amines, alkanolamines and amino acids; ii) converting at least part of the silver ions impregnated on the refractory support to metallic silver by heating while directing a stream of a first gas over the impregnated refractory support to obtain an intermediate catalyst, wherein the first gas comprises at least 5 vol.
    Type: Application
    Filed: March 26, 2021
    Publication date: April 13, 2023
    Inventors: Andrey KARPOV, Christian WALSDORFF, Thorsten JOHANN, Christian ALMER, Daniela RIECK, Christian BARTOSCH, Mauricio GROBYS, Tobias WEINLAND, Holger BORCHERT
  • Publication number: 20210039074
    Abstract: A method for preparing a silver impregnation solution comprises (a) charging a neutralization reactor R1 with an aqueous organic amine; (b) adding oxalic acid powder through a first feeding conduit to the neutralization reactor R1 to obtain an aqueous oxalic acid-organic amine solution; (c) directing the aqueous oxalic acid-organic amine solution from the neutralization reactor to a complexation reactor R2; (d) adding particulate silver oxide through a second feeding conduit to the complexation reactor R2 to obtain a silver impregnation solution; and, optionally, (e) subjecting the silver impregnation solution to filtration. The silver impregnation solution is used for producing a catalyst effective in the oxidative conversion of ethylene to ethylene oxide. The method allows for the preparation of a silver impregnation solution in an efficient and occupationally and environmentally safe way.
    Type: Application
    Filed: February 6, 2019
    Publication date: February 11, 2021
    Inventors: Andrey KARPOV, Andreas LEHR, Daniela RIECK, Holger BORCHERT, Tobias WEINLAND, Marco BOSCH, Christian WALSDORFF, Christian BARTOSCH, Juergen ZUEHLKE