Transport of sulfate anions through inorganic membranes modified by ion-exchange material

Resistance properties of systems consisting of H 2 SO 4 solutions and composite ceramic membranes modified by amphoteric ion-exchange material—hydrated zirconium dioxide (HZD)—are investigated by impedance spectroscopy. Transport numbers of sulfate ions through these membranes are calculated, and th...

Full description

Saved in:
Bibliographic Details
Published inRussian journal of electrochemistry Vol. 45; no. 12; pp. 1333 - 1339
Main Authors Dzyaz’ko, Yu. S., Linkov, V. M., Belyakov, V. N.
Format Journal Article
LanguageEnglish
Published Dordrecht SP MAIK Nauka/Interperiodica 01.12.2009
Subjects
Chemistry
Chemistry and Materials Science
Electrochemistry
Physical Chemistry
impedance
potential-determining ions
transport numbers
inorganic membrane
membrane potential
Online AccessGet full text

Cover

More Information
Summary:Resistance properties of systems consisting of H 2 SO 4 solutions and composite ceramic membranes modified by amphoteric ion-exchange material—hydrated zirconium dioxide (HZD)—are investigated by impedance spectroscopy. Transport numbers of sulfate ions through these membranes are calculated, and their values reach 0.86–0.92 as a function of the amount of HZD inserted into the membrane. Values of the transport numbers, estimated from impedance measurements, are found to be in good agreement with data obtained in investigations of sulfate transport at constant current under conditions in which the membrane charge is determined only by anions.
ISSN:1023-1935
1608-3342
DOI:10.1134/S1023193509120039