Catalysis Letters

, Volume 81, Issue 3, pp 219–221

Preparation of Vanadium and Vanadium Oxide Clusters by Means of Inert Gas Aggregation

  • M. Melzer
  • J. Urban
  • H. Sack-Kongehl
  • K. Weiss
  • H.-J. Freund
  • R. Schlögl
Article

DOI: 10.1023/A:1016585208341

Cite this article as:
Melzer, M., Urban, J., Sack-Kongehl, H. et al. Catalysis Letters (2002) 81: 219. doi:10.1023/A:1016585208341

Abstract

Vanadium clusters were prepared by the inert gas aggregation technique by evaporating V of high purity. Structural characterization was performed by high-resolution transmission electron microscopy. Apart from vanadium clusters of bcc structures in different orientations, crystalline VO clusters of NaCl structures were observed, which was attributed to the reaction with free oxygen present on the amorphous carbon substrates. The latter could be detected by electron energy-loss spectroscopy. The exposure of the samples to air caused a change to amorphous structures, which re-crystallized under the electron beam. This effect was interpreted as a reaction with water present in the air.

clusters high-resolution electron microscopy oxidation 

Copyright information

© Plenum Publishing Corporation 2002

Authors and Affiliations

  • M. Melzer
    • 1
  • J. Urban
    • 1
  • H. Sack-Kongehl
    • 1
  • K. Weiss
    • 1
  • H.-J. Freund
    • 1
  • R. Schlögl
    • 1
  1. 1.Fritz-Haber-Institut der Max-Planck-GesellschaftBerlinGermany

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