Patents Represented by Attorney, Agent or Law Firm James A. Zhoray
  • Process for selectively producing high octane naphtha
    Patent number: 6602403
    Abstract: This invention is related to a catalytically cracked or thermally cracked naphtha stream. The naphtha stream is contacted with a catalyst containing from about 10 to 50 wt. % of a crystalline zeolite having an average pore diameter less than about 0.7 nanometers at reaction conditions which include temperatures from about 500° C. to about 650° C. and a hydrocarbon partial pressure from about 10 to 40 psia. The resulting product is a high octane naphtha.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: August 5, 2003
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Todd R. Steffens, Paul K. Ladwig