Method for the interseparation of noble metals

Details Method for the interseparation of noble metals Method for the interseparation of noble metals

C - Chemistry, Metallurgy

22

B

53/168

C22B 3/24 (2006.01) B01D 15/08 (2006.01) C01G 55/00 (2006.01)

Patent

CA 1336043

A method for the interseparation of platinum- group noble metals (PGMs) from a gold-free halide solution using at least one chromatographic column. The solution is passed through a column containing a solid adsorbent having a Kd above 1 whereby the PGMs are adsorbed. The loaded adsorbent is eluted by a halide salt solution obtaining thereby well-spaced fractions, each containing only one single noble metal, coming out in the order: Ru, Rh, Pd, Pt, Ir and Cs. When gold is present with the PGMs, its prior removal is required by an additional chromatographic column containing an adsorbent based on polystyrene divinyl.

573294

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