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化学学报
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化学学报 ›› 2003, Vol. 61 ›› Issue (3): 350-353. 上一篇    下一篇

研究论文

Li-LSX沸石中阳离子分布与空分性能的研究

崔邑诚;张爱民;董家騄;须沁华   

  1. 南京大学化学化工学院
  • 发布日期:2003-03-15

Distribution of Cations in the Zeolite Frameworks and the Air Separation Ability of Li-LSX

Cui Yicheng;Zhang Aiming;Dong Jialu;Xu Qinhua   

  1. Department of Chemistry,Nanjing University
  • Published:2003-03-15

PDF

626

被引次数

46 | 5

利用静态交换与动态柱交换的方法对低硅KNaX沸石进行Li~+交换．用XRD， ICP测定样品的晶相及化学红外光谱对LSX在Li~+交换中的骨架振动进行了研究．结 果表明：在Li~+交换过程中，谱峰的位移与本身性质有关，而且与LSX骨架中的离 子位置有关．还探讨了在高交换度的Li-LSX样品上的空分性能布的关系．

关键词: 沸石, 锂离子, 离子交换, X射线衍射分析, 电感耦合等离子体

Low-silica KNaX-zeolite (LSX) was exchanged with Li~+ by static method and dynamic method. The zeolite crystal structure and the composition of samples were characterized by XRD and ICP, respectively. The framework vibrations of the LSX in the Li~+ exchange process were investigated by infrared spectra. It was found that the ratio of sodium to potassium and the vibration peak location were changed during the Li~+ exchange process. The phenomena were related to character and location of the metal ions in the frameworks of Li-LSX. The reason of increase of air separation ability for high exchange degree samples was discussed.

Key words: ZEOLITE, LITHIUM ION, ION EXCHANGING, XRD, ICP

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