Elsevier

Polyhedron

Volume 8, Issue 17, 1989, Pages 2099-2103
Polyhedron

The distribution of Fe3+ between aqueous nitrate and organic di(2-ethylhexyl)phosphoric acid (DEHPA)-hexane Solutions

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Abstract

The extraction of iron(III) from aqueous solutions by di(2-ethylhexyl)phosphoric acid (DEHPA, HA) in hexane at constant ionic strength (0.5 M NaNO3), has been investigated under acidic conditions by means of metal distribution measurements. Iron(III) was extracted by ion-exchange reactions via the species: FeA3(HA)3, Fe2A3(HA)5 and Fe3A3(HA)3 in the organic phase. The corresponding stability constants were determined as: log β1 = 16.87, log β2 = 25.02 and log β3 = 18.39, respectively.

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Cited by (5)

1

On leave from the Department of Inorganic Chemistry, The Royal Institute of Technology (KTH), S-100 44 Stockholm, Sweden.

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