The Ion-Exchange Property of Some Layered Inorganic Materials with Potassium Ion, Rubidium Ion and Cesium Ion, and Selective Cesium Ion-Exchange of Synthetic Mica
The Ion-Exchange Property of Some Layered Inorganic Materials with Potassium Ion, Rubidium Ion and Cesium Ion, and Selective Cesium Ion-Exchange of Synthetic Mica
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某些层状无机材料与钾离子、铷离子、铯离子的离子交换性能及合成云母的选择性铯离子交换
DOI：
10.1246/bcsj.73.2599
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发表时间：
2000
影响因子：
4
通讯作者：
Y. Kanzaki
中科院分区：
文献类型：
--
作者：
N. Suzuki;D. Yamamoto;Noriko Anaguchi;Hiroko Tsuchiya;K. Aoki;Y. Kanzaki
研究了二氟四硅酸钠（Na-TSM）与钾、铷、铯离子的离子交换性能，并与另外两种典型的层状无机材料进行了比较。Na-TSM对Cs+的选择性顺序为Cs+ > Rb+ > K+，其中Na-TSM的选择性差异最大。从化学分析发现，除了与层间钠离子的普通离子交换反应之外，铯离子交换还参与了作为Na-TSM的晶格组分的镁离子。发现铯离子与镁离子的交换是化学计量的，并且预期是理想的离子交换反应。这是Na-TSM特有的现象。一旦铯离子在Na-TSM晶格中交换，由于与钠离子的反向离子交换，它们几乎不被释放。最高的选择性差异和紧密结合的铯离子解释了离子交换晶格镁离子以及减少脱水。
The ion-exchange property of sodium difluorotetrasilicate, Na-TSM, with potassium, rubidium and cesium ions was investigated in addition to two other typical layered inorganic materials. The selectivity sequence of Na-TSM was Cs+ > Rb+ > K+ and the selectivity difference of Na-TSM was highest among the examined layered materials. It was found from a chemical analysis that cesium ion-exchange participated in magnesium ions, which is a lattice component of Na-TSM, in addition to an ordinary ion-exchange reaction with the interlayer sodium ions. The exchange of cesium ions with magnesium ions was found to be stoichiometric, and was expected to be an ideal ion-exchange reaction. It was a peculiar phenomenon only on Na-TSM. Once cesium ions were exchanged in a Na-TSM lattice, they were hardly released, due to a reverse ion-exchange with sodium ions. The highest selectivity difference and tight binding of cesium ions were interpreted by an ion-exchange with lattice magnesium ion as well as decreased dehydration...