Article ID Journal Published Year Pages File Type
5420564 Solid State Nuclear Magnetic Resonance 2010 9 Pages PDF
Abstract
The Component-Resolved methodology was applied to 1H spin-echo and 27Al-1H cross polarization (CP) MAS NMR data of aluminosilicate glasses. The method was able to resolve two components with different T2 relaxation rates, hydroxyl groups (OH) and molecular water (H2Omol), from the spin-echo data and to determine partial spectra and the relative abundances of OH and H2Omol. The algorithm resolved two to three components with different 27Al-1H CP dynamics from the 27Al-1H cross polarization data; the obtained partial NMR spectra for Al-OH are in excellent agreement with those obtained previously from the difference spectra between spectra with various contact times and confirm previous quantitative results and models for the Al-OH, Si-OH and H2Omol speciation (Malfait and Xue, 2010).
Related Topics
Physical Sciences and Engineering Chemistry Physical and Theoretical Chemistry
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