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Separation of Palladium(II) and Ruthenium(IV) from Hydrochloric Acid Solution by Solvent Extraction  

Lee, Man-seung (Department of Advanced Materials Science & Engineering, Mokpo National University)
Ahn, Jong-Gwan (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources)
Publication Information
Korean Journal of Metals and Materials / v.47, no.6, 2009 , pp. 349-355 More about this Journal
Abstract
In the solvent extraction of Ru(IV) with Alamine336, it was found that Ru took part in the reaction as $RuCl_{6}_^{2-}$ in the HCl concentration range of 1 to 5 M. Interaction parameter between hydrogen ion and $RuCl_{6}_^{2-}$ was estimated by applying Bromley equation to the extraction data. From the mixed solutions of Pd(II) and Ru(IV), the distribution coefficients of Pd were found to be higher than those of Ru in the experimental ranges. Separation factor between Pd and Ru rapidly increased with the decrease of Alamine336 concentration. About 60% of the Ru from the mixed solutions was extracted by TBP at 8.3 M HCl, while Pd was not extracted in the HCl concentration range of 1.6 to 8.3 M.
Keywords
$RuCl_{4}$; $PdCl_{2}$; HCl; Alamine336; TBP;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By Web Of Science : 1  (Related Records In Web of Science)
Times Cited By SCOPUS : 1
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