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Extraction of Pt(IV) and Pd(II) from Hydrochloric Acid Solutions Using Polypropylene Glycol 425

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Abstract

An environmentally friendly extraction system based on polypropylene glycol 425 and sodium chloride for the extraction of Pt(IV) and Pd(II) from diluted hydrochloric acid solutions has been proposed for the first time. The effect of the initial concentration of a metal, the acidity of a medium, temperature, the concentration of HCl, and the concentration of sodium chloride in the system on the interphase distribution of platinum-group metal ions has been studied. The mechanism of the extraction of the metal ions under study has been determined. It has been shown that the proposed extraction system can potentially be used for the separation of platinum and palladium.

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Funding

This study was financially supported by the Russian Foundation for Basic Research (project no. 18-29-24170).

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  1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991, Moscow, Russia

    Yu. A. Zakhodyaeva & I. V. Zinov’eva

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  1. Yu. A. Zakhodyaeva
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Correspondence to Yu. A. Zakhodyaeva.

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Translated by A. Uteshinsky

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Zakhodyaeva, Y.A., Zinov’eva, I.V. Extraction of Pt(IV) and Pd(II) from Hydrochloric Acid Solutions Using Polypropylene Glycol 425. Theor Found Chem Eng 55, 282–289 (2021). https://doi.org/10.1134/S0040579521020159

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