A thermodynamic study of the liquid-liquid extraction of transition metals by calixarene carboxyl derivatives

Fukiko Kubota, Toshikazu Toh, Masahiro Goto, Takahiko Kakoi, Fumiyuki Nakashio

    研究成果: Contribution to journalArticle査読

    9 被引用数 (Scopus)

    抄録

    Extraction of transition metals (Cu2+, Zn2+, Ni 2+ and Co2+) by calix[n]arene carboxyl derivatives and their monomer analog dissolved in toluene was performed in the temperature range of 283 to 323K. Thermodynamic parameters such as enthalpy and entropy changes (ΔH and ΔS) were obtained, and the cation exchange extracting properties of the cyclic ligand calixarenes were discussed in comparison with that of the non-cyclic monomer analog from a thermodynamic point of view. The enthalpy-entropy compensation effect on the complexation of metal ions with ligands was also discussed. It was found that calixarenes favorable promote complexation compared to the monomer analog.

    本文言語英語
    ページ(範囲)75-83
    ページ数9
    ジャーナルSolvent Extraction Research and Development
    11
    出版ステータス出版済み - 2004

    All Science Journal Classification (ASJC) codes

    • 化学 (全般)
    • 化学工学(全般)

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