Magic-angle spinning nuclear magnetic resonance study of the structure of some PbO-Al2O3-P2O5 glasses

Magic-angle spinning nuclear magnetic resonance study of the structure of some PbO-Al2O3-P2O5 glasses

Some PbO-Al2O3-P2O5 glasses have been investigated using 31P and 27Al magic-angle spinning nuclear magnetic resonance. The observed spectra could be divided into two groups. In the first, Al(IV), Al(V) and Al(VI) are observed, the 31P linewidths are large and the chemical shift range (-30 to -36 ppm...

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Veröffentlicht in:Solid state nuclear magnetic resonance 1995-10, Vol.5 (1), p.23-34
Hauptverfasser: Lockyer, M W, Holland, D, Howes, A P, Dupree, R
Format: Artikel
Sprache:eng
Schlagworte:
Aluminum Oxide - chemistry
Glass - chemistry
Lead - chemistry
Magnetic Resonance Spectroscopy - methods
Oxides - chemistry
Phosphorus - chemistry
Phosphorus Compounds
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Zusammenfassung:Some PbO-Al2O3-P2O5 glasses have been investigated using 31P and 27Al magic-angle spinning nuclear magnetic resonance. The observed spectra could be divided into two groups. In the first, Al(IV), Al(V) and Al(VI) are observed, the 31P linewidths are large and the chemical shift range (-30 to -36 ppm) is typical of network phosphate. In the second group, only Al(VI) is observed, the 31P linewidths are much narrower and the shifts are less negative (-18 to -28 ppm).
ISSN:0926-2040
DOI:10.1016/0926-2040(95)00034-n