Patents Examined by Elizabeth D. Irzinki
  • Regeneration of a platinum-containing zeolite
    Patent number: 4810683
    Abstract: A method is described for the regeneration of a hydrocarbon conversion catalyst that has become deactivated by carbonaceous material deposition where the catalyst comprises a nonacid zeolite and a Group VIII metal component. The method comprises the steps of (1) removing a substantial portion of the carbonaceous material from the catalyst by combustion with an oxygen-containing gas in the presence of a halogen, and (2) reducing the catalyst in the presence of hydrogen.
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: March 7, 1989
    Assignee: UOP Inc.
    Inventors: Michelle J. Cohn, Delmar W. Robinson, R. Joe Lawson