Synthetic inorganic ion-exchange materials. LII. Ion-exchange selectivities of crystalline antimonic acid for tervalent metal ions.
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概要
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The determination of selectivity coefficients for tervalent metal ions/hydrogen ions on cubic crystalline antimonic acid (C-SbA) was carried out for Ga<SUP>3+</SUP>, Fe<SUP>3+</SUP>, Ce<SUP>3+</SUP>, Sm<SUP>3+</SUP>, Y<SUP>3+</SUP>, Sc<SUP>3+</SUP>, and In<SUP>3+</SUP> by batch equilibration at 30, 45, and 60 °C in nitric acid media. The selectivity in microamounts showed: Al<SUP>3+</SUP><Tm<SUP>3+</SUP><Ga<SUP>3+</SUP><Yb<SUP>3+</SUP>=Y<SUP>3+</SUP><Er<SUP>3+</SUP><Dy<SUP>3+</SUP><Fe<SUP>3+</SUP><Eu<SUP>3+</SUP><Sm<SUP>3+</SUP><Ce<SUP>3+</SUP><La<SUP>3+</SUP><Sc<SUP>3+</SUP>=In<SUP>3+</SUP>. The ion-exchange isotherms of the systems of tervalent metal ions/hydrogen ions have also been studied on C-SbA. The selectivity coefficients in logarithm scale vs. equivalent fraction of metal ions in exchanger showed almost straight line, indicating monofunctional site with steric effect. In order to interpret the selectivity in microamounts of metal ions, hypothetical equilibrium constant was determined by extrapolating to zero loading of metal ions in C-SbA. From these values, the hypothetical thermodynamic data were calculated and evaluated.
- 公益社団法人 日本化学会の論文
著者
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Tsuji Masamichi
Department Of Chemical Science Graduate School Of Natural Science And Technology Kanazawa University
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Abe Mitsuo
Department Of Veterinary Anatomy Rakuno Gakuen University School Of Veterinary Medicine
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Tsuji Masamichi
Department of Chemistry, Tokyo Institute of Technology
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Hirata Masao
Department of Chemistry, Tokyo Institute of Technology
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