Patents by Inventor Martha J. P. Botman

Martha J. P. Botman 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).

  • Nickel/silica catalysts and their preparation
    Patent number: 5087599
    Abstract: The invention provides a nickel/silica catalyst optionally also containing cations of a lower Group II metal (X), which catalyst satisfies the following combination of features:1) a molar ratio of SiO.sub.2 /Ni=0.15-0.352) a molar ratio of X/Ni=0-0.153) an active nickel surface area above 120 m .sup.2 /g4) a BET surface area of which at least 40% is found with pores with a radius above 2.5 nm. Preferably the catalyst has an atomic X/Ni ratio between 0.05-0.10 and a BET surface area of which at least 45% is found in pores having a pore radius of above 2.5 nm. The group II metal X is preferably magnesium or barium.
    Type: Grant
    Filed: December 21, 1988
    Date of Patent: February 11, 1992
    Assignee: Unilever Patent Holdings B.V.
    Inventors: Martha J. P. Botman, Peter Nootenboom, Johannes C. Oudejans, Dirk Verzijl