Inhomogeneous distribution of Na+ in alkali silicate glasses

被引：15

作者：

Tokuda, Yomei ^{[1
]}

Oka, Takanori ^{[1
]}

Takahashi, Masahide ^{[1
]}

Yoko, Toshinobu ^{[1
]}

机构：

[1] Kyoto Univ, Inst Chem Res, Uji, Kyoto 6110011, Japan

来源：

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2011年 / 119卷 / 1396期

关键词：

Sodium silicate; Mixed alkali; MQMAS NMR; Quantum chemical calculation; Na+ elution behavior; Inhomogeneous distribution; NUCLEAR-MAGNETIC-RESONANCE; OXIDE GLASSES; ION-TRANSPORT; MAS-NMR; CATION DISTRIBUTION; DISILICATE GLASSES; MOLECULAR-DYNAMICS; CHEMICAL-SHIFTS; BOND DISTANCE; SPECTROSCOPY;

D O I：

10.2109/jcersj2.119.909

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：

We investigated the Na+ environment in sodium silicate glasses and mixed alkali silicate glasses using Na-23 multiple-quantum magic-angle spinning (MQMAS) NMR spectroscopy, ab initio molecular orbital (MO) calculations, and Na+ elution analysis. The Na-23 MQMAS NMR spectra of Na2O-xSiO(2) and (1 - y)Na2O-yM(2)O-2SiO(2) (M = Li, K) glasses showed an inhomogeneous distribution of local structures around Na+, even though spectral deconvolution was impossible. The quantum chemical calculations indicated that the alkali silicate glasses contained both aggregated and isolated Na+ sites. The elution behavior also supported the local structure distribution described above. These results indicated that a cation with a high cation field strength tends to aggregate in mixed silicate glasses. (C)2011 The Ceramic Society of Japan. All rights reserved.

引用

页码：909 / 915

页数：7

共 36 条

[1] EXAMINATION OF THE MIXED-ALKALI EFFECT IN (LI,NA) DISILICATE GLASSES BY NUCLEAR-MAGNETIC-RESONANCE AND CONDUCTIVITY MEASUREMENTS [J].

ALI, F ;

CHADWICK, AV ;

GREAVES, GN ;

JERMY, MC ;

NGAI, KL ;

SMITH, ME .

SOLID STATE NUCLEAR MAGNETIC RESONANCE, 1995, 5 (01) :133-143

[2] Z filtering in MQMAS NMR [J].

Amoureux, JP ;

Fernandez, C ;

Steuernagel, S .

JOURNAL OF MAGNETIC RESONANCE SERIES A, 1996, 123 (01) :116-118

[3] Influence of glass chemical composition on the Na-O bond distance:: a 23Na 3Q-MAS NMR and molecular dynamics study [J].

Angeli, F ;

Delaye, JM ;

Charpentier, T ;

Petit, JC ;

Ghaleb, D ;

Faucon, P .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2000, 276 (1-3) :132-144

[4] Study of the alkaline environment in mixed alkali compositions by multiple-quantum magic angle nuclear magnetic resonance (MQ-MAS NMR) [J].

Angelopoulou, A. ;

Montouillout, V. ;

Massiot, D. ;

Kordas, G. .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2008, 354 (2-9) :333-340

[5] PREFERENTIAL PATHS IN ALKALI ION MIGRATION AND THE MIXED-ALKALI EFFECT IN SILICATE-GLASSES [J].

BALASUBRAMANIAN, S ;

RAO, KJ .

JOURNAL OF PHYSICAL CHEMISTRY, 1993, 97 (35) :8835-8838

[6] CORRELATION OF ISOTROPIC SHIFTS AND CHEMICAL-SHIFT ANISOTROPIES BY TWO-DIMENSIONAL FOURIER-TRANSFORM MAGIC-ANGLE HOPPING NMR-SPECTROSCOPY [J].

BAX, A ;

SZEVERENYI, NM ;

MACIEL, GE .

JOURNAL OF MAGNETIC RESONANCE, 1983, 52 (01) :147-152

[7]

Buhl M., 2004, Calculation of NMR and EPR Parameters

[8] THE DYNAMIC STRUCTURE MODEL FOR ION-TRANSPORT IN GLASSES [J].

BUNDE, A ;

INGRAM, MD ;

MAASS, P .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1994, 172 (pt 2) :1222-1236

[9] REACTIONS OF GLASSES WITH AQUEOUS SOLUTIONS [J].

DOUGLAS, RW ;

ELSHAMY, TMM .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1967, 50 (01) :1-&

[10] Cation distribution in mixed alkali disilicate glasses [J].

Florian, P ;

Vermillion, KE ;

Grandinetti, PJ ;

Farnan, I ;

Stebbins, JF .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1996, 118 (14) :3493-3497

← 1 2 3 4 →