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本文证实了在高氯酸溶液中Rh(Ⅳ)主要以Rh(H_2O)_6~(4+)形式存在。研究了Rh(H_2O)_6~(4+)和Ir(H_2O)_6~(4+)在阳离子交换树脂上的行为。测定了两者在聚苯乙烯磺酸型阳离子交换树脂—HCIO_4间的分配比。根据Rh(H_2O)_6~(4+)和Ir(H_2O)_6~(4+)在阳离子交换柱上的洗脱曲线和回收率,讨论了在高氯酸溶液中Rh和Ir分离的可能性。
This paper confirms that Rh (Ⅳ) exists mainly in the form of Rh (H_2O) _6 ~ (4+) in perchloric acid solution. The behavior of Rh (H_2O) _6 ~ (4 +) and Ir (H_2O) _6 ~ (4 +) on cation exchange resin was studied. The distribution ratio of the two in polystyrene sulfonic acid cation exchange resin-HCIO_4 was measured. According to the elution curves and recoveries of Rh (H_2O) _6 ~ (4+) and Ir (H_2O) _6 ~ (4+) on the cation exchange column, the possibility of separation of Rh and Ir in perchloric acid solution was discussed .