ELECTRON-SPIN-RESONANCE STUDY OF THE INCORPORATION OF IRON IN FERRISILICALITE AND FAPO-5

被引：41

作者：

CATANA, G ^{[1
]}

PELGRIMS, J ^{[1
]}

SCHOONHEYDT, RA ^{[1
]}

机构：

[1] KATHOLIEKE UNIV LEUVEN,CENTRUM OPPERVLAKTCHEM,B-3001 HEVERLEE,BELGIUM

来源：

ZEOLITES | 1995年 / 15卷 / 05期

关键词：

FERRISILICALITE; FAPO-5; FE; ISOMORPHOUS SUBSTITUTION; ESR;

D O I：

10.1016/0144-2449(95)00001-M

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：

Ferrisilicalite and FAPO-5 were synthesized hydrothermally with iron contents from 0.1 to 1% on a molar basis and investigated by X-ray diffraction and electron spin resonance (e.s.r.) in the as-synthesized, oxidized, and reduced forms. The amount of Fe in the solid, the degree of crystallinity, and the Fe3+ e.s.r, signal intensity all increase with synthesis time in the same manner, indicating a gradual incorporation of Fe3+. At the same Fe content, different spectral behaviors of Fe3+ in Fe-silicalite and in FAPO-5 are attributed to the differences in the degree of isomorphous substitution, in the amount of Fe3+ in defect sites, and in the form of oxidic clusters.

引用

页码：475 / 480

页数：6

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