Abstract
The ion exchange sorption of the platinum(IV) chloride complexes in the presence of silver(I) chloro complexes from 2 and 4 M aqueous solutions of hydrochloric acid is studied on Purolite anion exchangers with different functional groups. The high selectivity of the investigated sorbents with respect to platinum during its recovery from individual hydrochloric acid solutions and in the presence of silver chloride complexes is determined. Since the latter are in this case virtually not sorbed in the presence of platinum(IV), they can be separated at the stage of sorption. The excellent kinetic properties of the investigated anion exchangers are revealed, allowing platinum to be eluted after its separation from silver chloro complexes in a dynamic mode.
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ACKNOWLEDGMENTS
The authors are grateful to the Purolite Ltd. representative office in Moscow and to M.A. Mikhailenko personally for providing our samples of the ion exchangers.
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Kononova, O.N., Duba, E.V., Efimova, A.S. et al. Ion Exchange Recovery of Platinum(IV) from Hydrochloric Acid Solutions in the Presence of Silver(I). Russ. J. Phys. Chem. 94, 828–834 (2020). https://doi.org/10.1134/S003602442004007X
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DOI: https://doi.org/10.1134/S003602442004007X