Copper(II) Extraction from Phosphoric Acid Media by 5‐Dodecylsalicylaldoxime (LIX 622) |
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| Authors: | A Ocio |
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| Affiliation: | Dpto. Química Analítica, Facultad de Ciencia y Tecnología , University of the Basque Country , Bilbao, Spain |
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| Abstract: | Abstract The extraction of Cu(II) from phosphoric acid media (0.4–7.3 M) by the commercial reagent LIX 622 in toluene has been studied. Experimental results have been treated numerically and the formation in the organic phase of the complex CuR2, HR being 5‐dodecylsalicylaldoxime, has been proposed. Values of the conditional extraction constants, which increase with the phosphoric acid concentration, are given. Organic extracts have been analyzed by EPR spectroscopy. The presence of a square planar complex of Cu(II) has been deduced confirming the stoichiometry CuR2. |
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| Keywords: | Copper phosphoric acid LIX 622 EPR spectroscopy |
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