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 |
|---|---|
| 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' |
|---|---|
| City | Boston, MA, USA |
| Period | 11/30/98 → 12/4/98 |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
Cite this
NMR characterization of simulated Hanford low-activity waste glasses and its use in understanding waste form chemical durability. / Darab, J. G.; Linehan, John; McGrail, B. P.
Materials Research Society Symposium - Proceedings. Vol. 556 Materials Research Society, 1999. p. 337-344.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - NMR characterization of simulated Hanford low-activity waste glasses and its use in understanding waste form chemical durability
AU - Darab, J. G.
AU - Linehan, John
AU - McGrail, B. P.
PY - 1999
Y1 - 1999
N2 - 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.
AB - 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.
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M3 - Conference contribution
VL - 556
SP - 337
EP - 344
BT - Materials Research Society Symposium - Proceedings
PB - Materials Research Society
ER -