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- W1534755521 abstract "Abstract The rate of solvent extraction of iron(III) from aqueous perchlorate solutions with thenoyltrifluoroacetone(TTA) in carbon tetrachloride, chloroform or methyl isobutyl ketone(MIBK), was measured at 25°C. The rate is first order with respect to the TTA concentration in the organic phase, and zero or inverse first order with respect to the hydrogen-ion concentration in all cases. From these results, the controlling reactions in the two non-solvating solvent systems were concluded to be the association of the hydrated Fe 3+ in the aqueous phase with TTA in the unionized and the anionic forms. The rate was third order dependent on the perchlorate concentration in the aqueous phase when MIBK was the solvent but independent of that concentration when carbon tetrachloride was the solvent, so that the calculated rate constants are higher in the MIBK system in the higher perchlorate concentrations. This increase in the rate of iron(III) extraction with MIBK is explained in terms of the mechanism that iron(III) is first extracted as perchlorate and then the extracted iron(III) reacts with TTA, and that these complex forming reactions proceed more rapidly than the corresponding reactions in the aqueous phase." @default.
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- W1534755521 date "1975-01-01" @default.
- W1534755521 modified "2023-09-27" @default.
- W1534755521 title "Kinetics studies of the solvent extraction of metal complexes—IV" @default.
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- W1534755521 doi "https://doi.org/10.1016/0022-1902(75)80149-7" @default.
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