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A TEMPERATURE-PROGRAMMED X-RAY PHOTOELECTRON SPECTROSCOPY STUDY OF THE DECOMPOSITION REACTIONS OF UNSATURATED HYDROCARBONS ON Ni(100)

Author

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  • CAROLINE M. WHELAN

    (Institut für Physikalische und Theoretische Chemie, Universität Erlangen-Nürnberg, Egerlandstrasse 3, D-91058 Erlangen, Germany)

  • RALF NEUBAUER

    (Institut für Physikalische und Theoretische Chemie, Universität Erlangen-Nürnberg, Egerlandstrasse 3, D-91058 Erlangen, Germany)

  • REINHARD DENECKE

    (Institut für Physikalische und Theoretische Chemie, Universität Erlangen-Nürnberg, Egerlandstrasse 3, D-91058 Erlangen, Germany)

  • HANS-PETER STEINRÜCK

    (Institut für Physikalische und Theoretische Chemie, Universität Erlangen-Nürnberg, Egerlandstrasse 3, D-91058 Erlangen, Germany)

Abstract

We present a temperature-programmed X-ray photoelectron spectroscopy study of the thermal chemistry of acetylene, ethylene and propene on Ni(100) using synchrotron radiation. The use of a third generation light source makes it possible to measure high resolution photoemission spectra within a few seconds approaching the ideal of real-time analysis. The evolution of the C 1s core level spectra has been monitoredin situas a function of sample temperature from 90 to 530 K. Analysis of binding energies and changes in intensities and correlation with previous data from the literature have allowed us to distinguish the surface intermediates formed during the thermal reactions. The resultant temperature-dependent intensity curves clarify the dehydrogenation mechanisms of acetylene and ethylene and provide new insight into the decomposition of propene.

Suggested Citation

  • Caroline M. Whelan & Ralf Neubauer & Reinhard Denecke & Hans-Peter Steinrück, 2002. "A TEMPERATURE-PROGRAMMED X-RAY PHOTOELECTRON SPECTROSCOPY STUDY OF THE DECOMPOSITION REACTIONS OF UNSATURATED HYDROCARBONS ON Ni(100)," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 9(02), pages 789-795.
    • Handle: RePEc:wsi:srlxxx:v:09:y:2002:i:02:n:s0218625x02002968
    DOI: 10.1142/S0218625X02002968
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