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Abstract  

A study is given on the extraction of trivalent antimony halides by nonpolar solvents, nitrobenzene, Amberlite LA-2 from sulphuric and orthophosphoric acids. These two acids, because of their dehydration action, were found to have an enhancing effect on the extraction of Sb(III) halides. Extraction by nonpolar solvents and nitrobenzene was also studied as a function of the antimony concentration.

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Journal of Radioanalytical and Nuclear Chemistry
Authors:
A. Alian
,
A. El-Kot
,
M. El-Bassiouny
, and
A. Haggag

Abstract  

The extraction of SbI3 by various organic solvents has been investigated as a function of H2SO4, KI and organic additive concentrations. At [Sb3+]: [I]≈3, extraction increases in the order hexane → cyclohexane → kerosene → CCl4→CHCl3 → benzene → toluene → o-xylene → nitrobenzene.

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Effect of the nature of organic solvents on their interaction with metal halides

V. Extraction of thallium halides from H2SO4 and H3PO4 solutions

Journal of Radioanalytical and Nuclear Chemistry
Authors:
A. Alian
,
A. El-Kot
,
A. Haggag
,
W. Sanad
, and
N. Tadros

Abstract  

A systematic study has been carried out on the extraction of thallium halides with aromatic hydrocarbons, TBP and Amberlite LA2. Extraction has been studied from both H2SO4 and H3PO4 of various molarities. Among the solvents studied nitrobenzene, TBP and Amberlite LA2 were found to give the best extraction of Tl(III) and its separation from Tl(I) and other ions. Extraction mechanism was discussed in light of the obtained results.

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Abstract  

The effect of water-miscible alcohols, acetone and haloacids in the aqueous phase of sulphuric acid solutions has been studied on the extraction of thorium sulphate and halides by bis(2-ethylhexyl) phosphoric acid (HDEHP) and tri-n-butyl phosphate (TBP). The partition coefficient (E) is greatly affected by these additives, and this gives useful separations from many other elements. Besides, the log-log relationship between the E values and solvent concentration leads to some suggestions on the extraction mechanisms of this mixed system.

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