Journal
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
Volume 285, Issue 2, Pages 239-245Publisher
SPRINGER
DOI: 10.1007/s10967-010-0547-z
Keywords
Ion exchange; Iron silico-antimonate; Distribution coefficient; Strontium; Cerium
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Incorporation of iron oxide into silico-antimonate of different Si/Sb molar ratios introduced a class of dual salts ion exchangers with advanced ion exchange properties. Physicochemical and equilibrium studies have been carried out to understand the ion exchange properties of these materials. Apparent investigation indicated that iron incorporation into silico-antimonate yields materials having excellent mechanical properties. On the basis of distribution studies, the materials were found to be highly selective for Sr(2+) or Ce(3+) depending on their Si/Sb molar ratios. Diffractogram, thermogram, IR spectra and sorption performance of crystalline FeSiSb (114) indicated that no detectable structural changes after an exposure up to 100 kGy of gamma-rays. Effect of reaction temperature on the exchange process was investigated and the respective thermodynamic parameters were calculated.
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