THE LOCATION OF CATIONS IN CS-EXCHANGED ZSM-5 ZEOLITE

被引：28

作者：

LIN, JC

CHAO, KJ

WANG, Y

机构：

[1] TSING HUA UNIV,DEPT CHEM,HSINCHU,TAIWAN

[2] TAIWAN NATL UNIV,DEPT CHEM,TAIPEI,TAIWAN

来源：

ZEOLITES | 1991年 / 11卷 / 04期

关键词：

CSZSM-5; POWDER X-RAY DIFFRACTION; CATION SITE; ALUMINUM LOCATION;

D O I：

10.1016/0144-2449(91)80305-J

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 Cs form of ZSM-5 zeolite (Si/Al = 26) has been studied by powder X-ray diffraction. The Rietveld method was used to determine the location and the occupancy of the exchangeable cations in hydrated and dehydrated CsZSM-5 structures. The cell dimensions of hydrated and dehydrated CsZSM-5, are a = 20.100(2), b = 19.932(2), c = 13.431(1) and a = 20.080(2), b = 19.925(2), and c = 13.404(2) angstrom, respectively. The Cs ion of dehydrated CsZSM-5 is located close to the oxygen atom (018) of the four-membered ring of the ZSM-5 framework with a Cs-O distance of 3.68 angstrom. The Al atom is likely to be located in the four-membered ring.

引用

页码：376 / 379

页数：4

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