Selective Separation and Recovery of Pt(IV) from Pd(II) through an Imidazolium-ionic-liquid-based Supported Liquid Membrane

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  • YOSHIDA Wataru
    Department of Applied Chemistry, Graduate School of Engineering, Kyushu University
  • KUBOTA Fukiko
    Department of Applied Chemistry, Graduate School of Engineering, Kyushu University
  • KONO Riho
    Department of Applied Chemistry, Graduate School of Engineering, Kyushu University
  • GOTO Masahiro
    Department of Applied Chemistry, Graduate School of Engineering, Kyushu University Center for Future Chemistry, Kyushu University

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Abstract

<p>A supported liquid membrane (SLM) system for the selective separation of platinum(IV) from palladium(II) has been developed. The SLM was prepared using imidazolium-based IL 1-octy-3-methylimidazolium bis(trifluoromethanesulfonyl)imide. The initial flux and separation factor of Pt(IV) from Pd(II) were found to significantly depend on the composition of the receiving solution. Based on the performance, a 0.1 mol dm−3 NaClO4 solution was selected as a suitable receiving solution. Membrane transport experiments showed that 93% of Pt(IV) can be selectively transported into the receiving solution, whereas most Pd(II) remains in the feed solution.</p>

Journal

  • Analytical Sciences

    Analytical Sciences 35 (3), 343-346, 2019-03-10

    The Japan Society for Analytical Chemistry

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