Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Platinum group metal
Patent
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.
Stoll Robert L.
Technion Research and Development Foundation Ltd.
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