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Small pore VPI-5: Pore blockage due to thermally induced stacking disorders

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Abstract

The transformation of VPI-5 to AIPO4-8 generates stacking disorders with the crystal which severely restricts its function as a molecular sieve. Evidence of these stacking disorders is established with adsorption measurements and high resolution transmission electron microscopy (HRTEM). Even partial transformation (less than 10% conversion) results in an 80% loss in adsorption capacity. These stacking disorders originate from the symmetry of the VPI-5 structure.

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Authors and Affiliations

  1. Dept. of Chemistry, U. of Oslo, Oslo 3, P.O Box 1033, 0315, Blindern, Norway

    K. Sørby

  2. Zeolite Research Program, Georgia Tech Research Institute, Georgia Institute of Technology, 30332, Atlanta, Georgia, USA

    R. Szostak

  3. National Center for Electron Microscopy, Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, University of California, 94720, Berkeley, California, USA

    J. G. Ulan & R. Gronsky

Authors
  1. K. Sørby
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  2. R. Szostak
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  3. J. G. Ulan
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  4. R. Gronsky
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Sørby, K., Szostak, R., Ulan, J.G. et al. Small pore VPI-5: Pore blockage due to thermally induced stacking disorders. Catal Lett 6, 209–214 (1990). https://doi.org/10.1007/BF00774722

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  • DOI: https://doi.org/10.1007/BF00774722

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