Aggregation equilibria of the components of the commercial extractants LIX 622 and LIX 622N in toluene and n-heptane

Rúa, M.S.; Almela, A.; Elizalde, M.P.

doi:10.1016/j.fluid.2006.04.006

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Liquid-liquid Extraction Equilibria2

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Cited by 6 publications

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“…where HR stands for 5-dodecylsalicylaldoxime, which partially dimerizes in toluene [42] and interacts with branched isomers of tridecylalcohol. [43] In all the experiments, the concentration of Cu(II) is very low compared to that of phosphoric acid.…”

Section: Liquid-liquid Extraction Equilibriamentioning

confidence: 99%

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Copper(II) Extraction from Phosphoric Acid Media by 5‐Dodecylsalicylaldoxime (LIX 622)

Ocio

Elizalde

2006

Solvent Extraction and Ion Exchange

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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 CuR 2 , 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 CuR 2 .

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Section: Liquid-liquid Extraction Equilibriamentioning

confidence: 99%

“…where log b dim ¼ 20.63 [42] and the interaction constant between the extractant (HR) and the modifier (T) logb 11 ¼ 1.15. [43] Using the computer program LETAGROP.DISTR [44] the free concentration of the ligand was calculated.…”

Section: Liquid-liquid Extraction Equilibriamentioning

confidence: 99%