Ion Exchange of Cesium on Potassium Nickel Hexacyanoferrate(2)s

DOI DOI Web Site 被引用文献15件 参考文献24件 オープンアクセス
  • HARJULA Risto
    Laboratory of Radiochemistry, Department of Chemistry, University of Helsinki
  • LEHTO Jukka
    Laboratory of Radiochemistry, Department of Chemistry, University of Helsinki
  • MIMURA Hitoshi
    Institute for Advanced Materials Processing, Tohoku University

書誌事項

タイトル別名
  • Ion Exchange of Cesium on Potassium Nickel Hexacyanoferrate (II) s.
  • Ion Exchange of Cesium on Potassium Nic
公開日
1997
DOI
  • 10.3327/jnst.34.484
  • 10.1080/18811248.1997.9733695
公開者
一般社団法人 日本原子力学会

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説明

The ion exchange of Cs+ on a nonstoichiometric compound K0.87Ni0.57[NiFe(CN)6]•nH2O (KNiFC) was examined by batch methods. The distribution coefficient of Cs+, Kd, Cs, was independent of Na+ concentration up to 5M (=mol/dm3), while it decreased with increasing concentrations of both K+ and NH+4. The separation factor for Cs/Rb, αCs/Rb, was 4.7×102 in the presence of 5M Na+. The decreasing order of Kd, Cs in the coexisting cations was found to be NH+4>K+, H+ > Na+, Ca2+. The uptake of Cs+ on KNiFC followed a Langmuir-type isotherm and the maximum amount of Cs+ taken up was estimated to be 2.57±0.074mmol/g. The free energy of K+_ ?? _Cs+ ion exchange was calculated to be -5.4±1.4kJ/mol by Kielland plot.

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