Method for the interseparation of platinum group metals

Details Method for the interseparation of platinum group metals Method for the interseparation of platinum group metals

1988-07-12

1989-12-05

Stoll, Robert L.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Platinum group metal

423 24, 423DIG14, 210635, 210656, 210688, 75101BF, 75118R, 75121, C22B 1104

Patent

active

048851434

ABSTRACT:
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 absorbent having a Kd above 1 whereby the PGMs are absorbed. The loaded absorbent 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 absorbent based on polystyrene divinyl.

REFERENCES:
patent: 2714555 (1955-08-01), Stevenson et al.
patent: 3970553 (1976-07-01), Terajima et al.

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