交换稀土La^(3+)离子NaY型分子筛的交流电导  

THE IONIC CONDUCTIVITY OF SODIUM ZEOLITE Y EXCHANGED WITH DIFFERENT LANTHANIUM CONTENTS

作　　者：郝金库[1] 王桂林[1] 赵维君[2] 方延铨[2] 张书笈[2] 

机构地区：[1]天津师范大学化学系,300074 [2]南开大学化学系,天津300071

出　　处：《离子交换与吸附》1993年第5期414-417,共4页Ion Exchange and Adsorption

基　　金：天津市高教局科研资助

摘　　要：本文用X—射线衍射、原子吸收光谱、差热热重、化学分析等方法测定了交换La^(3+)离子NaY分子筛的物相及组成,用交流阻抗谱仪测量了其离子电导。由电导率随温度的变化,得到NaY和LaNaY的电导表观活化能为49.6KJ/mol和41.3KJ/mol。讨论了交换La^(3+)离子对分子筛骨架结构中钠离子分布、落位及其扩散迁移的影响。The ionic conductivity of sodium zeolite Y exchanged with different lanthanium contents has been studied. The relationship between the activation energy in conductivity and the numbers of lanthanium ion per unit cell has been established. It has been demonstrated that the sodium ion in the zeolite Y is the main contributor to the conductivity and the distribution and diffusion of sodium ions in the zeolite Y was influenced by the lanthanium ions.

关 键 词：NaY型 分子筛 镧离子 交流电导 

分 类 号：TQ424.25[化学工程]