NMR characterization of simulated Hanford low-activity waste glasses and its use in understanding waste form chemical durability

J. G. Darab, John Linehan, B. P. McGrail

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

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 languageEnglish
Title of host publicationMaterials Research Society Symposium - Proceedings
PublisherMaterials Research Society
Pages337-344
Number of pages8
Volume556
Publication statusPublished - 1999
EventProceedings of the 1998 MRS Fall Meeting - Symposium 'Scientific Basis for Nuclear Waste Management XXII' - Boston, MA, USA
Duration: Nov 30 1998Dec 4 1998

Other

OtherProceedings of the 1998 MRS Fall Meeting - Symposium 'Scientific Basis for Nuclear Waste Management XXII'
CityBoston, MA, USA
Period11/30/9812/4/98

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Fingerprint Dive into the research topics of 'NMR characterization of simulated Hanford low-activity waste glasses and its use in understanding waste form chemical durability'. Together they form a unique fingerprint.

  • Cite this

    Darab, J. G., Linehan, J., & McGrail, B. P. (1999). NMR characterization of simulated Hanford low-activity waste glasses and its use in understanding waste form chemical durability. In Materials Research Society Symposium - Proceedings (Vol. 556, pp. 337-344). Materials Research Society.