Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9594231 | Solid State Nuclear Magnetic Resonance | 2005 | 13 Pages |
Abstract
Solid-state high-speed 1H MAS NMR spectroscopy was used to investigate the weathered surface of a potassium aluminum phosphate (KAP) glass exposed to a humid environment (30K2O10Al2O360P2O5, mol%). Through the combination of spin-spin relaxation and double quantum (DQ) filtering it was possible to resolve seven or eight different proton environments within the weathered surface of the KAP glass. Two-dimensional (2D) DQ and 2D NOESY NMR correlation experiments were performed to probe the spatial proximity of these different proton species. These 1H-1H correlation experiments helped confirm the spectral assignments. The analysis of these different 1H environments provides additional information about the chemical processes that occur at the weathered glass surface.
Related Topics
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Authors
Todd M. Alam, Brad C. Tischendorf, Richard K. Brow,