A study of the self-diffusion coefficients of Sr2+ in hydrated ceria and zirconia as a function of variable strontium ion capacity
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Cation self-diffusion studies have been carried out by using the radiochemical technique for strontium ion in both hydrated ceria and zirconia. The particles of these exchangers are shown to behave as variable capacity ion exchangers. Self-diffusion coefficients for strontium ion were measured as a function of the variable capacity for that ion in solutions of varying acidity. The results are shown to be in qualitative agreement with the absolute rate theory. Also, it is shown that the measured self-diffusion coefficients are dependent only upon the total strontium ion capacity.
KeywordsZirconia Hydrated Acidity Ceria Strontium
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- 1.N. Z. MISAK, H. N. SALAMA, I. M. EL-NAGGAR, Chemica Scripta, 22 (1983) 74; 23 (1984) 34.Google Scholar
- 2.N. Z. MISAK, N. Sh. PETRO, H. N. SALAMA, I. M. EL-NAGGAR, Arab J. Nucl. Sci. Appl., (1986).Google Scholar
- 3.N. Z. MISAK, N. Sh. PETRO, I. M. EL-NAGGAR, H. B. MAGHRAWY, H. F. GHONEIMY and E. I. SHABANA, Ion Exchange Selectivity and Kinetics on Hydrous Oxides and their Dependence on their Acidity, Capacity, Surface Area, Pore Structure and Crystallinity, Final Report submitted to IAEA, Research Contract No. 2716/RB (1985).Google Scholar
- 4.F. HELFFERICH, Ion Exchange, McGraw Hill, New York, 1962.Google Scholar
- 5.R. A. HORNE, J. Phys. Chem., 70 (1966) 1335.Google Scholar
- 7.G. E. BOYD and B. A. SALDANO, J. Amer. Chem., Soc., 75 (1954) 6091.Google Scholar