Solid‐state NMR Evidence of 4‐, 5, and 6‐Fold Aluminum Sites in Roller‐Quenched SiO <sub>2</sub> ‐A1 <sub>2</sub> O <sub>3</sub> Glasses
書誌事項
- 公開日
- 1987-01
- 権利情報
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
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- 10.1111/j.1151-2916.1987.tb04859.x
- 公開者
- Wiley
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説明
<jats:p> The structures of roller‐quenched SiO <jats:sub>2</jats:sub> ‐Al <jats:sub>2</jats:sub> O <jats:sub>3</jats:sub> glasses containing 10 to 50 wt% Al <jats:sub>2</jats:sub> O <jats:sub>3</jats:sub> were investigated by TEM and high‐resolution <jats:sup>27</jats:sup> Al and <jats:sup>29</jats:sup> Si magic angle sample spinning nuclear magnetic resonance (MASS‐NMR) spectroscopy. The chemical shifts observed in the NMR spectra of these phase‐separated (on the TEM scale) glasses provide evidence, for the existence of all three (4‐, 5‐, and 6‐jold) Al‐coordination units in these glasses and for the presence of A1 in both the Si‐rich and Si‐poor phases. </jats:p>
収録刊行物
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- Journal of the American Ceramic Society
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Journal of the American Ceramic Society 70 (1), C10-, 1987-01
Wiley
