Solid state 27Al NMR and FTIR study of lanthanum aluminosilicate glasses

被引：182

作者：

Clayden, NJ

Esposito, S

Aronne, A

Pernice, P

机构：

[1] Univ Naples Federico II, Dept Mat & Prod Engn, I-80125 Naples, Italy

[2] Univ E Anglia, Sch Chem Sci, Norwich NR4 7TJ, Norfolk, England

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1999年 / 258卷 / 1-3期

关键词：

D O I：

10.1016/S0022-3093(99)00555-4

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The structure of lanthanum aluminosilicate (LAS) glasses, containing: (15-25) mol% La2O3, (15-35) mol% Al2O3 and (40-70) mol% SiO2, were studied by Al-27 nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy (FTIR). The effects of La2O3 and Al2O3 content on the properties and structure of the LAS glasses were evaluated. Al3+ ion enters into the glass structure mainly in fourfold co-ordination, forming (AlO4/2)(-) tetrahedra, and only in small amounts in fivefold and sixfold co-ordination. La3+ acts as network modifier, producing more non-bridging oxygen atoms as its content increases. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：11 / 19

页数：9

共 24 条

[1] FTIR and DTA study of lanthanum aluminosilicate glasses [J].