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The effect of solvents on the extraction of lanthanoids with 18-crown-6 and trichloroacetate

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Abstract

The effect of solvents on the extraction of lanthanoids with 18-crown-6 and trichloroacetic acid was investigated for the solvents, 1,1,-dichloroethane, 1,2-dichloroethane, 1,1, 2,2-tetrachloroethane, chloroform, di-2-chloroethyl ether, and methylene chloride. Distribution coefficients (25 °C) normalized to the water solubility (wt./vol.) in the solvents correlated to the polarizability index (π*) for La3+, Ce3+, Pr3+, and Nd3+ with r values=0.93,0.93,0.95, and 0.98, respectively. The distribution coefficients for Nd3+ also correlated with the Hildebrand solubility parameter (σ) (r=0.98). These correlations agree with the literature that for large ions, the extraction thermodynamic properties correlate with the polarizability index and Hildebrand solubility parameter.

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Authors and Affiliations

  1. Department of Chemistry, University of Idaho, 83843, Moscow, Idaho, (USA)

    R. Frazier & C. M. Wai

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  1. R. Frazier
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  2. C. M. Wai
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Frazier, R., Wai, C.M. The effect of solvents on the extraction of lanthanoids with 18-crown-6 and trichloroacetate. Journal of Radioanalytical and Nuclear Chemistry, Articles 159, 63–69 (1992). https://doi.org/10.1007/BF02041017

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  • DOI: https://doi.org/10.1007/BF02041017

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