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Visualization of local ethylene polymerization activity on a flat CrO x /SiO2/Si(100) model catalyst |
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| Authors: | Peter C. Thüne Joachim Loos Xiaohui Chen Emiel M. E. van Kimmenade Bin Kong J. W. Niemantsverdriet |
| Affiliation: | (1) Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands;(2) Dutch Polymer Institute, P.O. Box 513, 5600 MB Eindhoven, The Netherlands;(3) Laboratory of Polymer Technology and Laboratory of Materials and Interface Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Eindhoven, The Netherlands;(4) School of Chemistry and Chemical Technology, Shanghai Jiaotong University, 200240 Shanghai, P.R. China;(5) State Key Laboratory of Polymer Physics and Chemistry, Joint Laboratory of Science and Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100080, P.R. China |
| Abstract: | Flat model catalysts give access to fundamental aspects of olefin polymerization over heterogeneous catalysts. They are especially suited for the investigation on the early stages of polymer film growth employing scanning probe and electron microscopy. The polymerization centers are confined to a well defined two dimensional plane that remains constant during the polymerization. Using the Phillips (CrO x /SiO2) catalyst as an example we demonstrate how this approach can be used do visualize the lateral distribution of polymerization activity in the initial stages of polymer growth. |
| Keywords: | ethylene polymerization model catalyst AFM EFTEM Phillips catalyst |
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