ELECTRON-PARAMAGNETIC RESONANCE STUDIES OF THE FORMATION OF ALKALI-METAL PARTICLES AND IONIC CLUSTERS IN ALKALI-METAL-LOADED X ZEOLITES

被引：46

作者：

XU, B ^{[1
]}

KEVAN, L ^{[1
]}

机构：

[1] UNIV HOUSTON,DEPT CHEM,HOUSTON,TX 77204

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1991年 / 87卷 / 17期

关键词：

D O I：

10.1039/ft9918702843

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Alkali metals (Li, Na, K, Rb, Cs) are loaded into the corresponding alkali-metal cation-exchanged X zeolites by alkali-metal vapour exposure and by decomposition of the corresponding alkali-metal azide mixed with the zeolite. Electron paramagnetic resonance shows that alkali-metal ionic clusters are formed, with K3(2+) ionic clusters being reported for the first time in the potassium cation-exchanged X zeolites. Analysis shows that the number of nuclei in the alkali-metal ionic cluster is determined by the distribution of cations in the beta-cage of the zeolite structure. Alkali-metal particles are also formed by both methods and are characterized by electron paramagnetic resonance.

引用

页码：2843 / 2847

页数：5

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