Patents Assigned to Häldor Topsoe A/S
  • Process for the preparation of ammonia
    Patent number: 7025944
    Abstract: Process for the preparation of ammonia comprising contacting ammonia synthesis gas with one or more catalysts, at least one catalyst having supported ruthenium as the active catalytic material supported on a nitride on a secondary support. A catalyst for use in the above process is provided.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: April 11, 2006
    Assignee: Häldor Topsoe A/S
    Inventors: Svend Erik Nielsen, Claus J. H. Jacobsen, Henrik Udesen, Tine Shim, Niels Kegel Sørensen