Abstract The effect on dielectric properties of alkaline cations Li+, Na+ and K+ incorporated in a zeolite Faujasite structure X or Y, has been investigated. Two major phenomena have been proved to occur: ionic conductivity and rotational polarization of the water molecules adsorbed. The polarizability of the cation which is directly linked to its radius, affects ionic conductivity as well as rotational polarization. Li cations are more strongly linked to the framework than K+ and Na+ and induce a lower ionic conductivity. K+ is weakly fixed and induces a ionic conductivity even at low solvation level. At low water content, the cation nature and number mainly control the free rotation of the water molecules and affect the relaxation frequency. Close to saturation, the water molecules are mainly linked together by H bonds: the cation nature and number do not really affect the global dielectric properties anymore.

中文翻译：

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沸石中碱性阳离子对其介电性能的影响

摘要 研究了结合在沸石八面沸石结构 X 或 Y 中的碱性阳离子 Li+、Na+ 和 K+ 对介电性能的影响。已证明发生了两种主要现象：吸附的水分子的离子电导率和旋转极化。阳离子的极化率与其半径直接相关，影响离子电导率以及旋转极化。与 K+ 和 Na+ 相比，锂离子与骨架的连接更牢固，并导致较低的离子电导率。K+ 是弱固定的，即使在低溶剂化水平下也会产生离子电导率。在低水含量下，阳离子的性质和数量主要控制水分子的自由旋转并影响弛豫频率。接近饱和时，水分子主要通过 H 键连接在一起：