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

Authors
SADLO J WASOWICZ T MICHALIK J
Citation
J. Sadlo et al., RADIATION-INDUCED SILVER AGGLOMERATION IN MOLECULAR-SIEVES - A COMPARISON BETWEEN A-ZEOLITES AND X-ZEOLITES, Radiation physics and chemistry, 45(6), 1995, pp. 909-915
Citations number
18
Categorie Soggetti
Nuclear Sciences & Tecnology","Chemistry Physical","Physics, Atomic, Molecular & Chemical
Journal title
Radiation physics and chemistry → ACNP
ISSN journal
0969806X
Volume
45
Issue
6
Year of publication
1995
Pages
909 - 915
Database
ISI
SICI code
0969-806X(1995)45:6<909:RSAIM->2.0.ZU;2-D
Abstract
The stabilization conditions of silver atoms and clusters in hydrated and dehydrated AgNa-A and AgNa-X zeolites gamma-irradiated at 77 K hav e been studied by ESR. It was found that silver agglomeration mechanis ms in hydrated A and X zeolites are very similar and are controlled by the migration of silver atoms into the alpha-cages. In dehydrated zeo lites 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 agg lomeration process in A and X zeolites are discussed.