Abstract
Extraction of Pt, Ir, Pd by the macrocyclic polyethers dibenzo-18-crown-6 (DB18C6) and cis-syncis-dicyclohexyl-18-crown-6 (DCH18C6, isomer A) in organic solvents (chloroform, dichloroethane) from 3–10 M aqueous HCl was studied. It was found that DCH18C6 in dichloroethane excellently extracted Pt, Ir, and Pd in the presence of KSCN. Re-extraction of Pt, Ir, and Pd from the organic phase can be fulfilled by 1 M HNO3. Thus, the macrocyclic polyethers are effective reagents for isolation of Pt, Ir, and Pd from HCl solutions.
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Original Russian Text © V.V. Yakshin, O.M. Vilkova, I.G. Tananaev, B.F. Myasoedov, 2010, published in Rossiiskii Khimicheskii Zhurnal, 2010, Vol. 54, No. 3, pp. 56–60.
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Yakshin, V.V., Vilkova, O.M., Tananaev, I.G. et al. Selective extraction of platinum, iridium, and palladium with macrocyclic endo-receptors from hydrochloric acid solutions. Russ J Gen Chem 81, 1966–1971 (2011). https://doi.org/10.1134/S1070363211090428
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DOI: https://doi.org/10.1134/S1070363211090428