混合溶剂对Ru(Ⅳ)萃取的研究
STUDIES ON THE EXTRACTION OF Ru(IV) WITH MIXED SOLVENTS
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摘要: <正> 一、前言 在一定浓度盐酸介质中,Ru(Ⅳ)以RuCl_6~(2-)络阴离子状态存在,可被C类溶剂TOA(三辛胺)以离子缔合机制定量地萃入有机相。由实验得到在相同条件下,TOA对Ru(Ⅳ)的萃取率随稀释剂介电常数的增加而下降。Abstract: In this paper, both the diluent effect of diluents with different dielectric constant in the extraction of Ru(IV) with TOA and the extraction mechanism of Ru(IV) mixed solvent TOA + TBP(CB type), TOA+TTA, TOA + PMBP (CA type) in 4 mol/l HCl media are reported.Weak synergistic extraction effect of Ru(IV) is observed in the system with 0.060 mol/1 (TOA +φ4 AsCl) (CC type) . The synergistic extraction coefficient is found to be R = 1.04.
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