DOI: 10.1039/A701029J
(Paper)
Reference Section for: J. Chem. Soc., Dalton Trans., 1997, 1483-1484
Phosphorus speciation in sodium–calcium–phosphate ceramics
(Note: The full text of this document is currently only available in the PDF Version )
Isaac Abrahams, Geoffrey E. Hawkes and Jonathan Knowles
Abstract
A series of ceramics derived from glasses of general formula (P2O5)0.45(CaO)0.2+x(Na2O)0.35-x (x = 0.0–0.12) were prepared and one- and two-dimensional 31P magic-angle spinning NMR spectroscopy confirmed the predominant speciation of Q1 phosphorus as Na4-, Na2Ca-, and α- and β-Ca2-P2O7, but did not show any Q1–Q2 connectivity characteristic of short metaphosphate chains.
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