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Characterization of AlPO systems, precursors of the novel basic catalyst family AlPON

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Abstract

XPS and DRIFTS (diffuse reflectance infrared spectroscopy) spectra of AlPO systems, formally AlPO4-Al2O3, obtained by the sol-gel method have been studied in order to understand their geometric and electronic structure. Both DRIFTS and XPS demonstrate that the acidbase character of these samples depends on a structural modification. For low phosphorus content an amorphous spinel-like solid is proposed. This geometric arrangement alters the electronic density of oxide ions and phosphorus cations and hence their Lewis acid-base properties with respect to the amorphous solid having aluminium and phosphorus only in tetrahedral arrangement.

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Authors and Affiliations

  1. Departamento de Química Inorgánica e Instituto de Ciencia de Materiales de Sevilla, Centro Mixto Universidad de Sevilla-CSIC, PO Box 874, E-41080, Sevilla, Spain

    J. J. Ben⩼ez, M. A. Centeno & J. A. Odriozola

  2. Laboratoire de Chimie des Matériaux,URA 1496 CNRS, “Verres et Céramiques”, Université de Rennes I, F-35042, Rennes Cedex, France

    R. Conanec, R. Marchand & Y. Laurent

Authors
  1. J. J. Ben⩼ez
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  2. M. A. Centeno
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  3. J. A. Odriozola
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  4. R. Conanec
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  5. R. Marchand
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  6. Y. Laurent
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Ben⩼ez, J.J., Centeno, M.A., Odriozola, J.A. et al. Characterization of AlPO systems, precursors of the novel basic catalyst family AlPON. Catal Lett 34, 379–388 (1995). https://doi.org/10.1007/BF00806888

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  • DOI: https://doi.org/10.1007/BF00806888

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