METHOD OF SEPARATING PLATINUM (II, IV), RHODIUM (III) AND NICKEL (II) IN CHLORIDE SOLUTIONS Russian patent published in 2014 - IPC C22B11/00 C22B23/00 C22B3/24 

FIELD: chemistry.

SUBSTANCE: method of separating platinum (II, IV) and rhodium (III) from nickel (II) in chloride solutions includes sorption of platinum (II, IV) and rhodium (III) and further desorption of the said metals. Sorption is carried out from freshly prepared and mature solutions in dynamic conditions by passing the solution through a layer of strongly basic anionite Purolite A 500 or weakly basic complex-forming anionite Purolite S 985, containing polyamine functional groups. Complete transfer of platinum (II, IV) and rhodium (III) into anionite takes place, with nickel (II) remaining in a discharged solution.

EFFECT: reduction of the process time, separation of platinum metals from accompanying metals, in particular from nickel, an increased degree of metal extraction, reduction of labour consumption of the separation process.

2 dwg, 2 tbl, 6 ex