Method for separation of palladium (II), platinum (IV), rhodium (III) and ruthenium (III) from four-component water solutions chloride solutions

摘要

The purpose of the notification is to divide palladium(II),platinum(IV),genus(III) and routine(III) of four-component aqueous chlorine solutions with selected phosphonium ions, widely used to recover these precious metals from solutions after treatment, e.g. secondary raw materials. Palladium (II) chapter,platinum(IV),the genus(III) and the routine(III) of the four-component aqueous chlorine solutions are obtained by extraction I with the organic solutions of the selected phosphonium fluids --to 0005 M trihexyl chloride (tetradecyl)phosphonium or trihexyl bromide (tetradecyl)phosphonium or bis(2,4,4-trimethylpentyl)phosphinate trihexyl(tetradecyl)phosphonium in toluene relative to the volume of the aqueous phase to the organic phase from 1:50 to 50:1. The organic phase obtained is then re-extracted I with 0,1 M of thiodium in 0,5 M HCland the aqueous extraction phase II with the addition of trihexyl(tetradecyl)phosphonium chloride or trihexyl(tetradecyl)phosphonium bromide or bis(2,4,4-trimethylpentyl)phosphinate trihexyl(tetradecyl)phosphonium bis(2,4,4-trimethylpentyl)phosphate in toluene. In the next stage, the organic phase obtained after re-extraction I is re-extracted II with 0,5 M ammonia solution, and the organic phase obtained after extraction II is re-extracted 1 with 0,1 M thiodium in 0,5 M HCl, then the organic phase is washed with 5 M HCl solution.