Patents Represented by Attorney John F. Spears

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  • Intercalated clay having large interlayer spacing
    Patent number: 5059568
    Abstract: Hydrothermally stable intercalated clays having interlayer (gallery) spacings of about 16 to 18 angstroms or more are provided by pillars comprising aluminum and cerium. Other pillaring metal/rare earth combinations and differing preparation conditions, such as pH, result in different interlayer spacings. Interlayer spacings of 16 to 40 or 18 to 50 angstroms may be produced.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: October 22, 1991
    Assignee: UOP
    Inventor: John F. McCauley