Catalysis Letters

, Volume 119, Issue 1–2, pp 95–100 | Cite as

Dehydrogenation of Cyclohexene on Platinum Nanoclusters on a Thin Film of Al2O3/NiAl(100)

  • Shrikrishina D. Sartale
  • Huang-Wei Shiu
  • Wen-Hua Wen
  • Meng-Fan Luo
  • Y. C. Lin
  • Yao-Jane Hsu


Using a scanning-tunneling microscope, reflection high-energy electron diffraction and photoelectron spectra with synchrotron radiation, we investigated the temperature dependence of the dehydrogenation of cyclohexene (C6H10) adsorbed on Pt nanoclusters supported on an ultra-thin film of Al2O3/NiAl(100). The Pt clusters, grown by vapor deposition, are structurally ordered and exhibit a mean diameter 2.2 nm and height 0.4 nm. The progress of dehydrogenation was monitored through the temporal variation of C 1s photoelectron spectra; analysis of these features revealed that the dehydrogenation of cyclohexene with increasing sample temperature occurs as a sequential process beginning around 150 K, a temperature significantly less than that for Pt single-crystal surfaces. The dehydrogenation behavior, particularly the decomposition into elemental carbon, is found to vary with Pt coverage.


Dehydrogenation Cyclohexene Pt Nanocluster STM PES 



National Science Council (under grants NSC 94–2112-M-008-032 and NSC 95-2811-M-008-018) and National Synchrotron Radiation Research Centre of Taiwan supported this work. We thank M. H. Ten, W. R. Lin, C. I. Chiang and Z. F. Lin for their technical assistance in the experiments.


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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Shrikrishina D. Sartale
    • 1
  • Huang-Wei Shiu
    • 1
  • Wen-Hua Wen
    • 1
  • Meng-Fan Luo
    • 1
  • Y. C. Lin
    • 2
  • Yao-Jane Hsu
    • 2
  1. 1.Department of Physics and Center for Nano Science and TechnologyNational Central UniversityJhongliTaiwan, China
  2. 2.National Synchrotron Radiation Research CenterHsinchuTaiwan, China

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