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Title: Tin Valence and Local Environments in Silicate Glasses as Determined From X-ray Absorption Spectroscopy

Abstract

X-ray absorption spectroscopy (XAS) was used to characterize the tin (Sn) environments in four borosilicate glass nuclear waste formulations, two silicate float glasses, and three potassium aluminosilicate glasses. Sn K-edge XAS data of most glasses investigated indicate Sn4+O6 units with average Sn-O distances near 2.03 Angstroms. XAS data for a float glass fabricated under reducing conditions show a mixture of Sn4+O6 and Sn2+O4 sites. XAS data for three glasses indicate Sn-Sn distances ranging from 3.43 to 3.53 Angstroms, that suggest Sn4+O6 units linking with each other, while the 4.96 Angstroms Sn-Sn distance for one waste glass suggests clustering of unlinked Sn4+O6 units.

Authors:
; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL) National Synchrotron Light Source
Sponsoring Org.:
Doe - Office Of Science
OSTI Identifier:
959901
Report Number(s):
BNL-82887-2009-JA
Journal ID: ISSN 0022-3093; JNCSBJ; TRN: US1005827
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Non-Crystalline Solids; Journal Volume: 354; Journal Issue: 27
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; ABSORPTION SPECTROSCOPY; BOROSILICATE GLASS; GLASS; MIXTURES; POTASSIUM; RADIOACTIVE WASTES; SILICATES; VALENCE; WASTES; TIN; X-RAY SPECTROSCOPY; national synchrotron light source

Citation Formats

McKeown,D., Buechele, A., Gan, H., and Pegg, I.. Tin Valence and Local Environments in Silicate Glasses as Determined From X-ray Absorption Spectroscopy. United States: N. p., 2008. Web. doi:10.1016/j.jnoncrysol.2008.01.019.
McKeown,D., Buechele, A., Gan, H., & Pegg, I.. Tin Valence and Local Environments in Silicate Glasses as Determined From X-ray Absorption Spectroscopy. United States. doi:10.1016/j.jnoncrysol.2008.01.019.
McKeown,D., Buechele, A., Gan, H., and Pegg, I.. Tue . "Tin Valence and Local Environments in Silicate Glasses as Determined From X-ray Absorption Spectroscopy". United States. doi:10.1016/j.jnoncrysol.2008.01.019.
@article{osti_959901,
title = {Tin Valence and Local Environments in Silicate Glasses as Determined From X-ray Absorption Spectroscopy},
author = {McKeown,D. and Buechele, A. and Gan, H. and Pegg, I.},
abstractNote = {X-ray absorption spectroscopy (XAS) was used to characterize the tin (Sn) environments in four borosilicate glass nuclear waste formulations, two silicate float glasses, and three potassium aluminosilicate glasses. Sn K-edge XAS data of most glasses investigated indicate Sn4+O6 units with average Sn-O distances near 2.03 Angstroms. XAS data for a float glass fabricated under reducing conditions show a mixture of Sn4+O6 and Sn2+O4 sites. XAS data for three glasses indicate Sn-Sn distances ranging from 3.43 to 3.53 Angstroms, that suggest Sn4+O6 units linking with each other, while the 4.96 Angstroms Sn-Sn distance for one waste glass suggests clustering of unlinked Sn4+O6 units.},
doi = {10.1016/j.jnoncrysol.2008.01.019},
journal = {Journal of Non-Crystalline Solids},
number = 27,
volume = 354,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2008},
month = {Tue Jan 01 00:00:00 EST 2008}
}