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 |
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| Authors: | K.G. Varshney Asif A. Khan Kanak Varshney Sanjay Agrawal |
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| Affiliation: | 1. Analytical Laboratories,Chemistry Section,Faculty of Engineering &2. Technology,Aligarh Muslim University , Aligarh, 202001, (INDIA) |
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| Abstract: | Abstract 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. |
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