Patents by Inventor Chia M. Fu

Chia M. Fu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Treatment of spent cracking catalysts
    Patent number: 4929336
    Abstract: A process for reactivating a spent, metal-contaminated zeolite-containing catalytic cracking catalyst composition comprises contacting the spent catalyst composition with an acidified aqueous NH.sub.4 NO.sub.3 solution, thereafter with a suitable fluorine compound (preferably dissolved NH.sub.4 F), and, optionally, additionally with an antimony compound. The thus prepared reactivated cracking catalyst composition is used in a process for catalytically cracking a liquid hydrocarbon-containing feed.
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: May 29, 1990
    Assignee: Phillips Petroleum Company
    Inventors: Richard E. Lowery, Chia M. Fu, Michael K. Maholland
  • Reactivation of spent catalytic cracking catalyst
    Patent number: 4814066
    Abstract: A spent zeolite-containing catalytic cracking catalyst composition is reactivated by a process comprising the steps of contacting the catalyst composition with a solution of a suitable ammonium compound (preferably an aqueous solution of NH.sub.4 NO.sub.3) and thereafter contacting the ammonium-exchanged cracking catalyst composition with a suitable fluorine compound (preferably a aqueous solution of NH.sub.4 F). A catalytic cracking process employs the reactivated cracking catalyst composition.
    Type: Grant
    Filed: May 19, 1988
    Date of Patent: March 21, 1989
    Assignee: Phillips Petroleum Company
    Inventor: Chia M. Fu