caa a22 4500 475844424 CHVBK 20180406123910.0 cr unu---uuuuu 170329e20000701xx s 000 0 eng 10.1023/A:1009084922459 doi (NATIONALLICENCE)springer-10.1023/A:1009084922459 Planar model system for olefin polymerization: the Phillips CrO x /SiO2 catalyst [Elektronische Daten] [P.C. Thüne, J. Loos, A.M. de Jong, P.J. Lemstra, J.W. Niemantsverdriet] A planar CrO x /SiO2/Si(100) model for the Phillips ethylene polymerization catalyst has been prepared by spincoat impregnation from an aqueous solution of CrO3. The model catalyst polymerizes ethylene from the gas phase at 160°C with a constant activity and forms a 400 nm thick layer of polyethylene in 1 h. The superior definition of the polymer films produced on this catalyst and the control over the distribution of active sites on its flat surface make this model catalyst an ideal substrate for kinetic studies on catalytic polymerization and for morphologic studies of the polymer product by scanning force microscopy. At extremely low catalyst loading we observe isolated polymer islands formed on single chromium sites. The work also opens attractive opportunities for future studies of nascent morphology of catalytically formed polymers. Kluwer Academic Publishers, 2000 Phillips catalyst nationallicence polyethylene nationallicence polymerization nationallicence model catalyst nationallicence nascent polymer morphology nationallicence Thüne P.C. Schuit Institute of Catalysis, Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands aut Loos J. Dutch Polymer Institute, Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands aut de Jong A.M. Schuit Institute of Catalysis, Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands aut Lemstra P.J. Dutch Polymer Institute, Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands aut Niemantsverdriet J.W. Schuit Institute of Catalysis, Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands aut Topics in Catalysis Kluwer Academic Publishers-Plenum Publishers 13/1-2(2000-07-01), 67-74 1022-5528 13:1-2<67 2000 13 11244 https://doi.org/10.1023/A:1009084922459 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1009084922459 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Thüne P.C. Schuit Institute of Catalysis, Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands aut NATIONALLICENCE 700 1- Loos J. Dutch Polymer Institute, Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands aut NATIONALLICENCE 700 1- de Jong A.M. Schuit Institute of Catalysis, Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands aut NATIONALLICENCE 700 1- Lemstra P.J. Dutch Polymer Institute, Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands aut NATIONALLICENCE 700 1- Niemantsverdriet J.W. Schuit Institute of Catalysis, Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands aut NATIONALLICENCE 773 0- Topics in Catalysis Kluwer Academic Publishers-Plenum Publishers 13/1-2(2000-07-01), 67-74 1022-5528 13:1-2<67 2000 13 11244 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer