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Title: Separation of platinum(IV) and palladium(II) from concentrated hydrochloric acid solutions by mixtures of amines with neutral extractants
Authors: Nguyễn, Thị Hồng
Sonu, Chong Ho
Lee, Man Seung
Keywords: Platinum
Hydrochloric acid
Solvent extraction
Issue Date: 2015
Series/Report no.: Journal of Industrial and Engineering Chemistry;32 .- p.238-245
Abstract: Separation of platinum and palladium from concentrated HCl solutions by extraction with mixture of amines (Aliquat 336/Alamine 336/TOA) and neutral extractants (TBP/TOP/MIBK) have been investigated. The mixture of Aliquat 336 and TBP led to higher Pt(IV) separation factor at 6 M HCl solution. McCabe–Thiele diagram for the extraction of Pt by this mixture was constructed. Low concentration of thiourea in the HCl solution resulted in selective stripping of Pd from the loaded organic. Pt solution with 99.9% purity was obtained by extraction and stripping from the solution containing Pd. A process was proposed to separate the two metals.
Appears in Collections:Tạp chí quốc tế

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