Solvent Extraction Equilibria of Rare Earth Metals by Acidic Organophosphorus Extractants with Bulky Substituents

Keisuke Ohto, Sachiyo Yoshida, Kazuharu Yoshizuka, Katsutoshi Inoue, Masaru Ohtsuka, Masahiro Goto, Fumiyuki Nakashio

    研究成果: Contribution to journalArticle査読

    11 被引用数 (Scopus)

    抄録

    Two kinds of acidic organophosphonates with different bulky ester groups, 2-[p-(1,1,3,3-tetramethylbutyl)phenoxy]ethyl and p-(1,1,3,3-tetramethylbutyl)phenyl groups, were synthesized to investigate their extraction behavior for nine kinds of rare earth elements from aqueous acidic nitrate media. The extraction reaction was discussed based on the slope analysis to evaluate the extraction equilibrium constants (Kex) for each metal ion and the separation factors (β). These extractants synthesized in the present work were found to possess stronger extractabilities for rare earth metals than commercial extractants like D2EHPA and PC-88A. Their separation efficiencies are also comparable with the commercial extractants mentioned above.

    本文言語英語
    ページ(範囲)637-641
    ページ数5
    ジャーナルanalytical sciences
    11
    4
    DOI
    出版ステータス出版済み - 1 1 1995

    All Science Journal Classification (ASJC) codes

    • 分析化学

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