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Solvent Extraction of Scandium(III), Yttrium(III) and Some Lanthanoid(III) Ions with N-Alkylcarbonyl Substituted N-Phenylhydroxylamines

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Abstract

The extraction behavior of scandium(III), yttrium(III) and certain lanthanoid(III) ions, namely praseodymium, europium and ytterbium, from aqueous solutions into carbon tetrachloride solutions containing various N-alkylcarbonyl-N-phenylhydroxylamines(R-PHAs) has been studied at 298 К and the ionic strength, 0.1(NaN03) The chelating extractante studied were N-octanoyl-N-phenylhydroxylamine (C8-PHA), N-(2-propylpentanoyl)-N-phenylhydroxylamine(PP-PHA) and N-(2-hexyldecanoyl)-N-phenylhydroxylamine(HD-PHA). The metal ions studied were all extracted with all the R-PHAs as self-adducts of the form ML3(HL)2, where L and HL represent the ligand anion and neutral ligand, respectively The extraction constants and separation factors for the extraction systems were evaluated. HD-PHA and PP-PHA were excellent extractants for the separation of yttrium from heavy lanthanoids.

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Authors and Affiliations

  1. The Government Industrial Development Laboratory Hokkaido, Toyohira, Sapporo, 062, Japan

    Kensaku Haraguchi, Toshio Ogata & Koichi Nakagawa

  2. Faculty of Engineering, Hokkaido University, Kita, Sapporo, 060, Japan

    Manabu Okuyama, Tohru Saitoh, Tamio Kamidate & Hiroto Watanabe

Authors
  1. Kensaku Haraguchi
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  2. Toshio Ogata
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  3. Koichi Nakagawa
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  4. Manabu Okuyama
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  5. Tohru Saitoh
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  6. Tamio Kamidate
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  7. Hiroto Watanabe
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Haraguchi, K., Ogata, T., Nakagawa, K. et al. Solvent Extraction of Scandium(III), Yttrium(III) and Some Lanthanoid(III) Ions with N-Alkylcarbonyl Substituted N-Phenylhydroxylamines. ANAL. SCI. 7 (Suppl 1), 35–38 (1991). https://doi.org/10.2116/analsci.7.Supple_35

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  • DOI: https://doi.org/10.2116/analsci.7.Supple_35

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