A KINETIC APPROACH TO EVALUATE THE ENERGY AND ENTROPY OF ACTIVATION FOR THE EXCHANGE OF ALKALINE EARTH METAL IONS ON TIN(IV) TUNGSTATE CATION EXCHANGER
作者:
K.G. Varshney,
AsifA. Khan,
Kanak Varshney,
Sanjay Agrawal,
期刊:
Solvent Extraction and Ion Exchange
(Taylor Available online 1984)
卷期:
Volume 2,
issue 6
页码: 923-935
ISSN:0736-6299
年代: 1984
DOI:10.1080/07366298408918482
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
A new approach based on the Nernst-Planck equations has been applied to study the reaction kinetics on the surface of tin(IV) tungstate for the Mg(II)-H(I), Ca(II)-H(I), Sr(II)-H(I) and Ba(IT)-H(I) exchanges under the conditions favouring a particle diffusion phenomenon. On the basis of these studies the various physical parameters such as the effective diffusion coefficients, activation energies and entropies of activation have been evaluated which give some informations regarding the mechanism of ion-exchange on the surface of inorganic materials.
点击下载:
PDF (173KB)
返 回