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Distribution coefficients of lanthanide elements and some separations on layered hydrous titanium dioxide

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Abstract

Distribution coefficients /Kd/ of lanthanide elements on layered hydrous titanium dioxide, H2Ti4O9.nH2O /where n=1.2–1.3/, have been determined as a function of the pH of the aqueous phase. The plots of 1g Kd vs. pH gave straight lines with slopes equal to +3 except for the data for heavier lanthanides, suggesting ideal ion-exchange equilibria between tervalent cations in the aqueous phase and hydrogen ions in the hydrous oxide. Mutual separations of La−Cs and La−Ba have been achieved on a column of this material on the basis of large differences in affinities between the metal ion pairs.

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Authors and Affiliations

  1. National Institute for Research in Inorganic Materials, 1-1 Namiki, Sakura-mura, Niihari-gun, Ibaraki, Japan

    T. Sasaki, Y. Komatsu & Y. Fujiki

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  1. T. Sasaki
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  2. Y. Komatsu
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  3. Y. Fujiki
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Sasaki, T., Komatsu, Y. & Fujiki, Y. Distribution coefficients of lanthanide elements and some separations on layered hydrous titanium dioxide. Journal of Radioanalytical and Nuclear Chemistry Letters 107, 111–119 (1986). https://doi.org/10.1007/BF02163446

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  • DOI: https://doi.org/10.1007/BF02163446

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