Sorption of alkali cations at the zirconium oxide/ aqueous electrolyte interface |
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| Affiliation: | 1. Dipartimento di Fisica e Chimica, Università di Palermo, Viale delle Scienze, I-90128 Palermo, Italy;2. Institute CNR-ITAE, via Salita S. Lucia sopra Contesse 5, I-98126 Messina, Italy;3. Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università degli Studi di Messina, Viale Ferdinando Stagno d''Alcontres, 31, I-98166, Messina, Vill. S. Agata, Italy |
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| Abstract: | Sorption of the ions, Li+, Na+ and K+ on hydrous zirconia has been studied at 298 K and in the concentration and pH ranges 0.1–1.0 mol dm−3 and 4.0–10.0, respectively. It has been found that sorption sequence of the studied ions depends on both ion concentration and the pH value of the solution. The intrinsic ionization and complexation constants of the above ions with surface sites of hydrous zirconia are reported. The point of zero charge of hydrous zirconia has been determined as pHpzc = 4.0. |
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