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Ionics

, Volume 2, Issue 1, pp 39–45 | Cite as

Some remarks on the ionic conductivity in NaY dehydrated zeolite

  • A. Abdoulaye
  • S. S. Soulayman
  • G. Chabanis
  • J. C. Giuntini
  • J. V. Zanchetta
  • I. Brach
Article
  • 28 Downloads

Abstract

On the basis of experimental measurements of the electrical conductivity of the Nafaujasite zeolites (NaY), treated under vacuum up to 673 K for 24 hours, we clearly demonstrate that the behavior of the measured conductivity σac of the dehydrated zeolite NaY, over an interval of high frequency change, may be described by a power-law function: σac=A▹s. The exponent s, in this case, should be considered as temperature and frequency dependent when the parameter A is a temperature dependent function. On the other hand, when considering the measured conductivity as a sum of two terms (σac0+σ′(▹)) resulting from the contributions of the dc and the ac components respectively, we find that one of them obeys the Arrhenius law while the other can be expressed as A▹s. Parameter s is practically frequency independent when the frequency of the applied electrical field is higher than a characteristic value ▹c A comparison with the measurements performed on NaY dehydrated at 435 K is also included.

Keywords

Physical Chemistry Analytical Chemistry Electrical Conductivity Zeolite Electronic Material 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© IfI - Institute for Ionics 1996

Authors and Affiliations

  • A. Abdoulaye
    • 1
  • S. S. Soulayman
    • 1
  • G. Chabanis
    • 1
  • J. C. Giuntini
    • 1
  • J. V. Zanchetta
    • 1
  • I. Brach
    • 2
    • 1
  1. 1.Laboratoire de Physico-Chimie des Materiaux Solides, Equipe de Chimie Physique, URA D0407Universite de Montpellier IIMontpellier cedex 05France
  2. 2.Commission of the European CommunitiesBruxellesBelgium

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