Patents Assigned to Hanns Hofmann
  • Process for preparing styrene, and an appropriate agent
    Patent number: 4400568
    Abstract: The invention relates to a process for oxidatively dehydrogenating dehydrogenatable organic compounds to prepare styrene. In this process, the compounds mentioned are reacted in the vapor phase with oxygen at a temperature above 350.degree. C. in the presence of a catalyst based on zirconium phosphate. Suitable dehydrogenatable organic compounds are above all saturated alkylaromatics, in particular ethylbenzene.
    Type: Grant
    Filed: April 16, 1982
    Date of Patent: August 23, 1983
    Assignees: Hanns Hofmann, Gerd Emig, Wolfgang Ruppert
    Inventors: Hanns Hofmann, Gerd Emig, Wolfgang Ruppert