Effect of the nature of organic solvents on their interaction with metal halides—I: Extraction of antimony bromides from H2SO4 solutions

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Abstract

A systematic study has been carried out on the extraction of Sb(III) and Sb(V) with aromatic hydrocarbons and some other solvents. Extraction has been investigated as a function of H2SO4 molarity at constant HBr concentration, of HBr molarity at constant H2SO4 concentration and of water-miscible alcholos and acetone molarity at constant concentration of both acids. Extraction dependency on the concentration of aromatic hydrocarbons in cyclohexane was also studied. Comparative stability of the SbBr3 complexes with the aromatic hydrocarbons is reported and the mechanism of interaction between the complexes and these liquids is discussed in view of the obtained results.

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