CONFIGURATIONAL ENTROPY OF THE SI, AL DISTRIBUTION IN ZEOLITES

被引：7

作者：

HERRERO, CP

机构：

[1] Instituto de Ciencia de Materiales, CSIC, 28006 Madrid

来源：

CHEMICAL PHYSICS LETTERS | 1990年 / 171卷 / 04期

关键词：

D O I：

10.1016/0009-2614(90)85379-Q

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：

The configurational entropy of the Si, Al distribution in zeolites with the faujasite framework is calculated from earlier 29Si NMR results by the cluster -variation method of Kikuchi. From the experimental NMR data, a significant entropy decrease is found with respect to the model which includes only the AlAl pair avoidance. The degree of order of this cation distribution can thus be quantified and, according to the results obtained, may depend on the preparation method. © 1990.

引用

页码：369 / 372

页数：4

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