Patents by Inventor Mohamed I. Zaki

Mohamed I. Zaki 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).

  • Process for the inorganic chemical modification of rhodium alumina catalysts and automotive catalyst made by the process
    Patent number: 5492880
    Abstract: A process for chemically converting surface hydroxyl groups present on an uminum oxide supported rhodium catalyst that is suitable for use as an automotive catalyst in controlling automotive exhaust emissions is disclosed. The process includes converting the hydroxyl groups on the aluminum oxide supported catalyst by reacting the aluminum oxide support with an alumina modifier which comprises an inorganic compound containing the cation Y, wherein Y is either an alkali metal or an alkaline earth metal. This process involves replacing the hydroxyl groups on the aluminum oxide support with OY groups to resist the oxidative conversion of supported metallic rhodium Rh.sub.x .sup.(O) to Rh.sup.(I). An associated catalyst suitable for use in automotive catalytic converter technology for environmental protection is provided.
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: February 20, 1996
    Assignee: University of Pittsburgh of the Commonwealth System of Higher Education
    Inventors: Mohamed I. Zaki, Todd H. Ballinger, John T. Yates, Jr.