Abstract
Magic Angle Spinning Nuclear Magnetic Resonance (MAS-NMR) spectroscopy has been used to characterize the structural and chemical environments of B, Al, and Si in model Hanford low-activity waste glasses. The average 29Si NMR peak position was found to systematically change with changing glass composition and structure. From an understanding of the structural roles of Al and B obtained from MAS-NMR experiments, we first developed a model that reliably predicts the distribution of structural units and the average 29Si chemical shift value, δ, based purely on glass composition. A product consistency test (PCT) was used to determine the normalized elemental release (NL) from the prepared glasses. Comparison of the NMR and PCT data obtained from sodium boro-aluminosilicate glasses indicates that a rudimentary exponential relationship exists between the 29Si chemical shift value, and the boron NL value.
Original language | English |
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Title of host publication | Materials Research Society Symposium - Proceedings |
Publisher | Materials Research Society |
Pages | 337-344 |
Number of pages | 8 |
Volume | 556 |
Publication status | Published - 1999 |
Event | Proceedings of the 1998 MRS Fall Meeting - Symposium 'Scientific Basis for Nuclear Waste Management XXII' - Boston, MA, USA Duration: Nov 30 1998 → Dec 4 1998 |
Other
Other | Proceedings of the 1998 MRS Fall Meeting - Symposium 'Scientific Basis for Nuclear Waste Management XXII' |
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City | Boston, MA, USA |
Period | 11/30/98 → 12/4/98 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials