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Solid‐state NMR characterization of oxygen sites in organically modified aluminosilicate xerogels
Author(s) -
Lafuma Aurélie,
Fayon Franck,
Massiot Dominique,
ChodorowskiKimmès Sandrine,
Sanchez Clément
Publication year - 2003
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1282
Subject(s) - chemistry , aluminosilicate , magic angle spinning , characterization (materials science) , solid state nuclear magnetic resonance , isotropy , nmr spectra database , oxygen , spinning , analytical chemistry (journal) , spectral line , chemical shift , nuclear magnetic resonance spectroscopy , nuclear magnetic resonance , nanotechnology , stereochemistry , polymer chemistry , catalysis , organic chemistry , materials science , optics , physics , astronomy
Solid‐state NMR characterization of hybrid aluminosilicate xerogels, by 17 O magic angle spinning (MAS) and triple quantum magic angle spinning (MQMAS) techniques, evidences Si—O—Si and Si—O—Al oxygen sites, spectrally separated in MQMAS experiments. Inversion of the MQMAS spectra allows the measurement of quadrupolar parameters, isotropic chemical shifts, distribution of chemical shift and discussion of the mobility of the structural units. Copyright © 2003 John Wiley & Sons, Ltd.