Catalysis Letters

, Volume 22, Issue 4, pp 387–392 | Cite as

Study of surface properties of dodecatungstophosphoric acid by means of ionization of aromatic hydrocarbons

  • Feng Xian Liu-Cai
  • Frédéric Lefebvre
Article

Abstract

The surface properties of H3PW12O40 are initially dependent on pretreatment temperature as can be deduced from the ionization of adsorbed aromatic hydrocarbons. Not only does surface dehydration proceed at a lower temperature than bulk dehydration but also highly reactive species (ionized benzene) are generated by the loss of protons of polyanions in special locations such as corner or edge positions.

Keywords

Hydrocarbon ionization ESR dodecatungstophosphoric acid 

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References

  1. [1]
    M.T. Pope,Heteropoly andlsopolyoxometalates (Springer, Berlin, 1983).Google Scholar
  2. [2]
    M. Misono, Catal. Rev. -Sei. Eng. 29 (1987) 269.Google Scholar
  3. [3]
    I.V. Kozhevnikov and K.I. Matveev, Appl. Catal. 5 (1983) 135.Google Scholar
  4. [4]
    I.V. Kozhevnikov, Russ. Chem. Rev. 56 (1987) 811.Google Scholar
  5. [5]
    J.B. Moffat, J. Mol. Catal. 52 (1989) 169, and references therein.Google Scholar
  6. [6]
    G.I. Kapustin, T.R. Brueva, A.L. Klyachko, M.N. Timofeeva, S.M. Kulikov and I.V. Kozhevnikov, Kinet. Catal. 31 (1990) 896.Google Scholar
  7. [7]
    A. Auroux, F.X. Cai and F. Lefebvre, Proc. AFCAT 21/22 (1990) 103.Google Scholar
  8. [8]
    A. Oulmekki and F. Lefebvre, React. Kinet. Catal. Lett., in press.Google Scholar
  9. [9]
    J. Wierzchowski, E. Garbowski and J.C. Védrine, J. Chim. Phys. 78 (1981) 41.Google Scholar
  10. [10]
    M. Akimoto, Y. Suchida, K. Sato and E. Echigoya, J. Catal. 72 (1981) 83.Google Scholar
  11. [11]
    M. Akimoto, K. Shima, H. Ikeda and E. Echigoya, J. Catal. 86 (1984) 173.Google Scholar
  12. [12]a
    M. Fournier, C. Feumi-Jantou, C. Rabia, G. Hervé and S. Launay, J. Mater. Chem. 2 (1992) 971;Google Scholar
  13. [12]b
    A. Oulmekki, D. Olivier, G. Hervé and F. Lefebvre, Compt. Rend. Acad. Sci. Paris Series II 311 (1990) 619.Google Scholar
  14. [13]
    G.M. Brown, N.R. Noe-Spirlet, W.R. Busing and H.A. Levy, Acta Cryst. B 33 (1977) 1038.Google Scholar
  15. [14]
    M. Che, D. Olivier, L. Bonneviot and P. Mériaudeau, in:Les Techniques Physiques d'Etude des Catalyseurs, eds. B. Imelik and J.C. Védrine (Technip, Paris, 1988) ch. 7.Google Scholar
  16. [15]
    F.R. Chen, PhD Thesis, Lyon, France (1987).Google Scholar
  17. [16]
    M. Hino and K. Arata, J. Chem. Soc. Chem. Commun. (1988) 473.Google Scholar

Copyright information

© J.C. Baltzer AG, Science Publishers 1993

Authors and Affiliations

  • Feng Xian Liu-Cai
    • 1
  • Frédéric Lefebvre
    • 1
  1. 1.Laboratoire de Chimie des Métaux de TransitionUniversité de Paris VIParis Cedex 05France

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