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
  • 25 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 

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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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