Lithium and sodium ion-exchange behavior of (H3O)Zr2(PO4)3 with three-dimensional network structure

The ion-exchange behavior of H3O+ in (H3O)Zr2(PO4)3 and alkali metal ions, MI+, was examined in an aqueous solution. The pH titration was performed using a 0.1 mol·L−1-MIOH solution (MI = Li, Na, K, Rb, and Cs), while stirring and distributing (H3O)Zr2(PO4)3 in deionized water. In K, Rb, and Cs, the...

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Bibliographic Details
Published in:Solid state communications 2021-07, Vol.333, p.114356, Article 114356
Main Authors: Minamoto, Chihiro, Nakayama, Susumu
Format: Article
Language:English
Subjects:
Atomic absorption spectrophotometry
Ionic radius
Lattice parameter
X-ray diffraction
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Summary:The ion-exchange behavior of H3O+ in (H3O)Zr2(PO4)3 and alkali metal ions, MI+, was examined in an aqueous solution. The pH titration was performed using a 0.1 mol·L−1-MIOH solution (MI = Li, Na, K, Rb, and Cs), while stirring and distributing (H3O)Zr2(PO4)3 in deionized water. In K, Rb, and Cs, the pH value increased to ten or more after adding the MIOH solution. Therefore, it was believed that ionic exchange with H3O+ in (H3O)Zr2(PO4)3 did not advance. Conversely, ionic exchange with H3O+ was observed at Li and Na. In Li only or Na only, Li was easily immobilized and leached, and Na was inferior to Li. In Li + Na, the immobilized amount of Li decreased, Li leaching was difficult, and the immobilized amount of Na increased.
ISSN:0038-1098
1879-2766
DOI:10.1016/j.ssc.2021.114356