Solid NMR Study of the Ion-Exchange Properties on γ-Titanium Phosphate
Solid NMR Study of the Ion-Exchange Properties on γ-Titanium Phosphate
复制标题
γ-磷酸钛离子交换性能的固体核磁共振研究
DOI：
10.5182/jaie.14.supplement_169
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Y. Komatsu
中科院分区：
文献类型：
--
作者：
N. Suzuki;M. Itoh;Megumi Igarashi;Y. Kanzaki;Y. Komatsu
层状γ-磷酸钛（γ-TiP），即Ti（HPO 4）2·2 H2O，是一种重要的插层化合物主体材料，也是H+/金属离子体系的无机离子交换剂。发现它对碱金属离子中的Rb+和Cs+具有高的离子交换选择性。离子交换反应分两步进行，交换过程中带走了γ-TiP层间的部分水分子，得到无定形的γ-TiP。这一现象首先通过热分析进行了研究，并进行了进一步的调查，使用固体核磁共振的1H和133 Cs详细。此外，研究了离子交换反应中Fe ~（2+）和Cs ~+之间的相互作用。尽管Fe ~（2+）很难被γ-TiP吸附，但当Cs ~+共存时，Fe ~（2+）的吸附量增加，Cs ~+的吸附量减少。
Layered γ-titanium phosphate (γ-TiP), Ti (HPO4) 2⋅2H2O, is well known as the host material of intercalation compounds and the inorganic ion-exchanger of H+/metal ion system. It was found to have high ion-exchange selectivity for Rb+ and Cs+ among alkali metal ions. The ionexchange reactions for these ions progressed in two steps according to pH. Part of water molecules in the mterlayer of γ-TiP was taken away during ion-exchange reaction and an amorphous γ-TiP resulted. This phenomenon was first studied by thermal analysis and further investigation was carried out using solid NMR of 1H and 133Cs in detail. Moreover, the interaction between Fe2+ and Cs+ for the ion-exchange reaction was investigated. Despite Fe2+ was hard to adsorb to γ-TiP, the amount of sorbed Fe2+ increased when Cs+ coexisted and the amount of sorbed Cs+ decreased.