Patents Examined by Paul E. Konapka
  • Treatment of arsine removal catalysts
    Patent number: 4962272
    Abstract: Supported metal oxide catalysts such as lead oxide catalysts are rejuvenated after absorbing arsenic compounds from hydrocarbon steams (such as propylene) by heating them in an inert, oxygen-free atmosphere, optionally with moisture present.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: October 9, 1990
    Assignee: Aristech Chemical Corporation
    Inventors: Leonard A. Cullo, Edward F. Restelli, Jr.