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Radiation and Thermal Effects in Zeolite-NaY

Published online by Cambridge University Press:  10 February 2011

Binxi Gu ,
Lumin Wang ,
Phil A. Simpson ,
Leah D. Minc  and
Rodney C. Ewing
Binxi Gu
Affiliation:
Department of Nuclear Engineering and Radiological Sciences
Lumin Wang
Affiliation:
Department of Nuclear Engineering and Radiological Sciences
Phil A. Simpson
Affiliation:
Michigan Memorial Phoenix Project, University of Michigan, Ann Arbor, MI 48109
Leah D. Minc
Affiliation:
Michigan Memorial Phoenix Project, University of Michigan, Ann Arbor, MI 48109
Rodney C. Ewing
Affiliation:
Department of Nuclear Engineering and Radiological Sciences
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Abstract

Zeolite-NaY is susceptible to both irradiation- and thermally-induced amorphization. Amorphized zeolite-NaY loses approximately 95 percent of its ion exchange capacity for cesium due to the loss of exchangeable cation species and /or the blockage of access to exchangeable cation sites. A secondary phase was formed during the ion exchange reaction with cesium. The Cs-exchanged zeolite-NaY phase has a slightly higher thermal stability than the unexchanged zeolite-NaY. A desorption study indicated that the amorphization of cesium-loaded zeolite-NaY enhances the retention capacity of Cs due to the closure of structural channels.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 608: Symposium QQ – Scientific Basis for Nuclear Waste Management XXIII , 1999 , 493
Copyright
Copyright © Materials Research Society 2000

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References

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