High Speed 1H MAS NMR Investigations of the Corrosion Surface in Phosphate Glass

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 (30K2Oradical dot10Al2O3radical dot60P2O5, 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.

Department(s)

Materials Science and Engineering

Keywords and Phrases

1H MAS NMR; High Speed Investigations; Corrosion Surface; Phosphate Glass

International Standard Serial Number (ISSN)

0022-3093; 1873-4812

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2005 Elsevier Inc., All rights reserved.

Publication Date

01 Jan 2005

Link to Full Text

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