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Dielectrical Behaviour and Conductivity of Natural Copper Exchanged Clinoptilolite

V. Šály, M. Reháková, A. Sopková, and M. Ďurkovič

Department of Electrotechnology, Electrotechnical Faculty, Slovak Technical University, SK-812 19 Bratislava

 

Abstract: The aim of this study was to characterize electrical conductivity and dielectrical properties of the Cu(II) exchanged zeolite - natural clinoptilolite from Eastern Slovakia in the range of frequencies from 101 to 105 Hz and at temperatures from 218 to 603 K. The measured values of the conductivity sigma ranged from 10-10 to 10-5 S m-1 at these frequencies and those temperatures. Dielectrical loss peak was found only at temperatures lower than 273 K. Activation energy calculated using static values σs extrapolated from Cole-Cole impedance diagrams was found to be Ea = 0.78 eV. The results of Electron Microsonda measurements, CHN analyses, and thermal analyses are given, too.

Full paper in Portable Document Format: 484a236.pdf

 

Chemical Papers 48 (4) 236–241 (1994)

Tuesday, July 23, 2019

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