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

Acta Chimica Sinica ›› 2003, Vol. 61 ›› Issue (3): 350-353. Previous Articles Next Articles

Original Articles

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

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

Department of Chemistry,Nanjing University

Published:2003-03-15

Abstract

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

CLC Number:

O647

Cite this article

Cui Yicheng;Zhang Aiming;Dong Jialu;Xu Qinhua. Distribution of Cations in the Zeolite Frameworks and the Air Separation Ability of Li-LSX[J]. Acta Chimica Sinica, 2003, 61(3): 350-353.

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Li-LSX沸石中阳离子分布与空分性能的研究

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

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