用放射性示踪法研究铑和铂、钯、铱的分离

STUDY OF THE SEPARATION OF Rh FROM Pt, Pd, Ir BY RADIOTRACER ME-THOD.

摘要: <正> 在一定浓度的盐酸介质中,Cl~-离子过量存在时,Pt(Ⅳ)、Pd(Ⅳ)、Ir(Ⅳ)均以MCl_6~(2-)形式存在,而Rh(Ⅲ)以Rh(H_2O)_6~(3+)形式存在。根据这一特征本文以放射性核素~(197)Pt、~(109)Pd、~(192)Ir示踪方法,分别用伯胺N_(1923)-煤油萃取和H型阳离子交换法,获得了Rh与Pt、Pd、Ir的定量分离。

Abstract: Extraction or ion exchange method is used with radiotracer 197Pt, 109Pd, 192Ir to study the separation of Rh from Pt, Pd, Ir. After pretreatment of the test solution in HC1 medium with excess Cl- ions Pt (Ⅳ), Pd(Ⅳ), Ir (Ⅳ) exist in the formes of MCl2 6-and Rh (Ⅲ) in Rh (H2O)3 6+. They are separated by primary amine N1923-kerosin (20%V/ V) as extractant or by H-type organic resin (150-250mesh). By these methods Rh is quantitatively separated from Pt, Pd and Ir.