Surface model for gas-phase polymerizations of ethylene and propylene using supported metallocene/methylalumoxane catalysts

W. Kaminsky, P.J. Lemstra, J. Loos, F. Müller, J.W. Niemantsverdriet, P.C. Thüne, U. Weingarten

    Research output: Contribution to journalArticleAcademicpeer-review

    4 Citations (Scopus)

    Abstract

    In order to obtain more detailed information about supported metallocene/methylaluminoxane catalysts, 2 catalysts are supported onto a flat silicon wafer by spin-coating impregnation. These model catalysts are characterized by SEM and EDX showing a film of metallocene catalyst dispersed inside the methylaluminoxane matrix, as well as regions of a localized increased concn. of the catalyst. Applying these model catalysts in a gas-phase polymn. reactor results in rather homogeneous films of polyethylene and polypropylene, resp. In addn., crater-like and spherical polymer structures can be obsd., probably formed by inhomogeneous catalyst distribution.
    Original languageEnglish
    Pages (from-to)367-372
    Number of pages6
    JournalIsrael Journal of Chemistry
    Volume42
    Issue number4
    DOIs
    Publication statusPublished - 2003

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