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Liquid-liquid extraction of trivalent actinides and lanthanides with mixtures of N-benzoyl-N-phenyl hydroxylamine and neutral donors

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Abstract

Extraction of trivalent actinides Am and Cm and trivalent lanthanides Pm and Eu has been studied with mixtures of N-benzoyl-N-phenyl hydroxylamine (HBPHA) and TBP, TOPO or dipy in chloroform. The order of synergistic extraction was found to be TBP>TOPO>dipy, which is just the reverse to the order of basicity of these neutral donors. The interaction of HBPHA with TBP has been studied in chloroform. The synergistic species extracted was found to be M(BPHA)3·n TBP (n=1 or 2). Log D vs pH plots (at fixed HBPHA and TBP concentrations) gave straight lines with slopes 1.4 (Am, Cm, Pm) and 1.7 (Eu) instead of the expected value of 3.0. Reasons for these abnormalities are discussed.

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Authors and Affiliations

  1. Radiochemistry Division Bhabha Atomic Research Centre, Trombay, 400 085, Bombay, India

    J. N. Mathur & P. K. Khopkar

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  1. J. N. Mathur
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  2. P. K. Khopkar
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Mathur, J.N., Khopkar, P.K. Liquid-liquid extraction of trivalent actinides and lanthanides with mixtures of N-benzoyl-N-phenyl hydroxylamine and neutral donors. Journal of Radioanalytical and Nuclear Chemistry, Articles 109, 329–335 (1987). https://doi.org/10.1007/BF02037876

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  • DOI: https://doi.org/10.1007/BF02037876

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