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Sodium Selective Ion-Exchange Properties of Zirconium Phosphate, HZr2(PO4)3, and Its Application for the Removal of Sodium Ions

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Abstract

Zirconium phosphate, HZr2(PO4)3 (NZP), in a powder form was synthesized from zirconium chloride oxide and sodium dihydrogenphosphate, and its ion exchange adsorption properties to alkali metal ions were studied. The ion-exchange adsorption partition coefficients of NZP to alkali metal ions at pH=3.4 were found to be 3.2×103 (Li*), 4.5×105 (Na+), 2.6 (K+), 12 (Rb+), and 380 (Cs+) cm3 g−1. The results indicate that NZP has a high adsorbability to sodium ions. Mixed granules of NZP and silica sol (NZP-P) were then prepared and applied for the selective removal of sodium ions by a column adsorption method.

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Authors and Affiliations

  1. Daiichi Kigenso Kagaku Kogyo Co. Ltd., Hirabayashiminami, Suminoe, Osaka, 559, Japan

    Yasushi Nakajima

  2. Department of Industrial Chemistry, Kumamoto Institute of Technology, Ikeda, Kumamoto, 860, Japan

    Isao Yoshida

Authors
  1. Yasushi Nakajima
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  2. Isao Yoshida
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Nakajima, Y., Yoshida, I. Sodium Selective Ion-Exchange Properties of Zirconium Phosphate, HZr2(PO4)3, and Its Application for the Removal of Sodium Ions. ANAL. SCI. 12, 935–940 (1996). https://doi.org/10.2116/analsci.12.935

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  • DOI: https://doi.org/10.2116/analsci.12.935

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