Investigation of Al-O-Al sites in an Na-aluminosilicate glass
Yükleniyor...
Tarih
2004
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Indian Academy Sciences
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
This paper reports the presence of Al-O-Al linkages in an aluminosilicate glass where Si/Al = 1 by using 2D O-17 triple quantum MAS NMR technique (3Q MASNMR). The experiments were performed at external magnetic fields of 8.4 and 14.4T. Despite (17)OMAS NMR spectra of the sample in both fields do not give much information about the different kinds of linkages in the sample, 3Q MAS NMR spectrum shows clear evidence that there are some amounts of Al-O-Al linkages in the sample giving two completely resolved peaks. These two peaks were attributed to the Si-O-Al and Al-O-Al linkages on the basis of their chemical shifts and, quadrupolar coupling constants which are quite sensitive to the local structure.
Açıklama
dupree, ray/0000-0002-3334-0429
Anahtar Kelimeler
O-17 MAS NMR, aluminosilicates, Al-O-Al, quadrupole coupling constant, asymmetry parameter
Kaynak
Bulletin Of Materials Science
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
27
Sayı
3
Künye
Yildirim, E.K., & Dupree, R. (2004). Investigation of Al-O-Al sites in an Na-aluminosilicate glass. Bulletin of Materials Science, 27(3), 269-272.
