Patents Assigned to Degussa Huls
  • Catalyst, process for its preparation, and use for synthesis of methyl mercaptan
    Patent number: 5977011
    Abstract: A catalyst for the synthesis of methyl mercaptan from hydrogen sulfide and methanol as well as a process for preparation of the catalyst. The catalyst is an active aluminum oxide onto which 5 to 25% by weight potassium tungstate is deposited as an activator. A two-stage impregnation with intermediate drying produces a catalyst which exhibits distinctly better selectivity for formation of methyl mercaptan than catalysts obtained by single-stage impregnation.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: November 2, 1999
    Assignee: Degussa Huls
    Inventors: Joerg Sauer, Lukas von Hippel, Dietrich Arntz, Wolfgang Boeck