RADIATION-INDUCED SILVER AGGLOMERATION IN MOLECULAR-SIEVES - A COMPARISON BETWEEN A-ZEOLITES AND X-ZEOLITES

被引：11

作者：

SADLO, J

WASOWICZ, T

MICHALIK, J

机构：

[1] Department of Radiation Chemistry and Technology, Institute of Nuclear Chemistry and Technology, 03-195 Warsaw

来源：

RADIATION PHYSICS AND CHEMISTRY | 1995年 / 45卷 / 06期

关键词：

D O I：

10.1016/0969-806X(94)E0045-K

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 stabilization conditions of silver atoms and clusters in hydrated and dehydrated AgNa-A and AgNa-X zeolites gamma-irradiated at 77 K have been studied by ESR. It was found that silver agglomeration mechanisms in hydrated A and X zeolites are very similar and are controlled by the migration of silver atoms into the alpha-cages. In dehydrated zeolites agglomeration leads to completely different silver clusters in A and X zeolites. Small cationic clusters are stabilized in A zeolites and metallic clusters in X zeolites. Various factors affecting the agglomeration process in A and X zeolites are discussed.

引用

页码：909 / 915

页数：7

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