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Nanoscale encapsulation [electronic resource] : the structure of cations in hydrophobic microporous aluminosilicates

Published
Washington, D.C. : United States. Dept. of Energy, 1996.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
15 pages : digital, PDF file
Additional Creators
Argonne National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Hydrophobic microporous aluminosilicates, created by organic surface modification of inherently hydrophilic materials such as zeolites and clays, are currently being investigated as storage media for hazardous cations. Use of organic monolayers to modify the surface of an aluminosilicate after introducing an ion into the zeolite/clay reduces the interaction of water with the material. Resulting systems are about 20 times more resistant to leaching of stored ion. XAS spectra from the encapsulated ion demonstrate that byproducts from the organic modifier can complex with the stored cation. This complexation can result in a decreased affinity of the cation for the aluminosilicate matrix. Changing the organic modifier eliminates this problem. XAS spectra also indicate that the reactivity and speciation of the encapsulated ion may change upon application of the hydrophobic layer.
Report Numbers
E 1.99:anl/chm/cp--89746
E 1.99: conf-9608104--4
conf-9608104--4
anl/chm/cp--89746
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
10/01/1996.
"anl/chm/cp--89746"
" conf-9608104--4"
"DE96014375"
9. international conference on x-ray absorption fine structure (XAFS), Genoble (France), 26-30 Aug 1996.
Song, Kang; Wasserman, S.R.; Yuchs, S.E.; Soderholm, L.; Giaquinta, D.
Funding Information
W-31-109-ENG-38
View MARC record | catkey: 14092039