Chinese Journal of Applied Chemistry ›› 1985, Vol. 0 ›› Issue (4): 71-75.
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Li Shengchong, Dai Gangfu, Zou Zhongjie, Xu Guangxian
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Abstract: The extraction system of RE(Ⅲ) (except Pm,including Y) with thenoyltriflouroacetone (HTTA) and tributylphosphine oxide (TBPO) was studied by two-phase titration method.The results showed that: (1) There is no association between HTTA and TBPO under experimental conditions. (2) The mixed ligand complexes of types RE (TTA)3(TBPO)2,RE(TTA)3(TBPO)3, RE(TTA)3(TBPO)4 were formed in the organic phase and their stability constants were determined. (3) The stability constants β30k of RE(TTA)3(TBPO)k increase with the atomic number of the lanthanide. logβ303 shows a clear tetrad effect.The position of logβ303 for Y is between that for Ho and Er.
Li Shengchong, Dai Gangfu, Zou Zhongjie, Xu Guangxian. STUDY ON THE SYNERGIC EXTRACTION OF RE(Ⅲ) IONS WITH HTTA-TBPO BY THE METHOD OF TWO-PHASE TITRATION[J]. Chinese Journal of Applied Chemistry, 1985, 0(4): 71-75.
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