Dielectric studies in zeolite-water systems

Author

Daoukaki-Diamanti, D. ; Pissis, P.

Author_Institution

Dept. of Phys., Nat. Tech. Univ. of Athens, Greece

fYear

1991

fDate

25-27 Sep 1991

Firstpage

221

Lastpage

226

Abstract

The authors use zeolites as model systems in an attempt to study the dynamic properties of water in small volumes under different geometrical confinements. They report on detailed studies of the dielectric properties of compressed Na-X zeolite powders by means of the thermally stimulated depolarization currents (TSDC) method in the temperature range 77-300 K and with water contents up to about 0.6 w/w. For comparison, other absorbates are also studied. The relaxation mechanisms observed are discussed in terms of different structures of water molecules, ion-jumping within the lattice, DC conductivity, and critical water contents

Keywords

dielectric depolarisation; dielectric relaxation; electrets; sodium compounds; thermally stimulated currents; water; 77 to 300 K; DC conductivity; compressed Na-X zeolite powders; dielectric properties; dynamic properties; electret; geometrical confinements; ion-jumping; model systems; relaxation mechanisms; small volumes; thermally stimulated depolarization currents; water contents; zeolite-water systems; Biological system modeling; Conducting materials; Conductivity; Dielectrics; Lattices; Physics; Powders; Solid modeling; Temperature distribution; Water;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1991. (ISE 7) Proceedings., 7th International Symposium on (Cat. No.91CH3029-6)

Conference_Location

Berlin

Print_ISBN

0-7803-0112-9

Type

conf

DOI

10.1109/ISE.1991.167210

Filename

167210