Aluminium environments in mullite and an amorphous sol-gel precursor examined by 27Al triple-quantum MAS NMR

被引：26

作者：

Bodart, PR

Parmentier, J

Harris, RK

Thompson, DP

机构：

[1] Univ Durham, Dept Chem, Durham DH1 3LE, England

[2] Univ Newcastle Upon Tyne, Dept Mech Mat & Mfg Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1999年 / 60卷 / 02期

关键词：

amorphous materials; ceramics; nuclear magnetic resonance (NMR);

D O I：

10.1016/S0022-3697(98)00275-3

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The Al-27 triple-quantum MAS spectrum of an amorphous sol-gel precursor of 2:1 type mullite has been compared to those of crystalline 2:1 type mullite and andalusite. For the 2:1 type mullite and its precursor three peaks were observed. The true isotropic chemical shifts and the composite quadrupolar parameters were determined. The structural significance of the central peak in the spectrum of the precursor material is discussed in the context of the well-known structures of the two other crystalline phases. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

收藏

页码：223 / 228

页数：6

相关论文

共 30 条

[1] STABLE AND METASTABLE EQUILIBRIA IN SYSTEM SIO2-AL2O3 [J].

AKSAY, IA ;

PASK, JA .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1975, 58 (11-1) :507-512

[2] 1ST OBSERVATION OF 5-COORDINATE ALUMINUM BY MAS AL-27 NMR IN WELL-CHARACTERIZED SOLIDS [J].

ALEMANY, LB ;

KIRKER, GW .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1986, 108 (20) :6158-6162

[3] Optimized multiple-quantum magic-angle spinning NMR experiments on half-integer quadrupoles [J].

Amoureux, JP ;

Fernandez, C ;

Frydman, L .

CHEMICAL PHYSICS LETTERS, 1996, 259 (3-4) :347-355

[4] Triple-quantum two-dimensional Al-27 magic-angle spinning nuclear magnetic resonance spectroscopic study of aluminosilicate and aluminate crystals and glasses [J].

Baltisberger, JH ;

Xu, Z ;

Stebbins, JF ;

Wang, SH ;

Pines, A .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1996, 118 (30) :7209-7214

[5]

Benn R., 1983, ANGEW CHEM, V95, P808

[6] AL-27 SOLID-STATE NUCLEAR MAGNETIC-RESONANCE STUDY OF 5-COORDINATE ALUMINUM IN AUGELITE AND SENEGALITE [J].

BLEAM, WF ;

DEC, SF ;

FRYE, JS .

PHYSICS AND CHEMISTRY OF MINERALS, 1989, 16 (08) :817-820

[7] Distributions of the quadrupolar and isotropic chemical shift interactions in two-dimensional multiple-quantum MAS NMR spectra [J].

Bodart, PR .

JOURNAL OF MAGNETIC RESONANCE, 1998, 133 (01) :207-209

[8]

BURNHAM CW, 1961, Z KRISTALLOGR, V115, P269

[9] Al-27 MAS NMR characterization of AlPO4-14 enhanced resolution and information by MQMAS [J].

Fernandez, C ;

Amoureux, JP ;

Chezeau, JM ;

Delmotte, L ;

Kessler, H .

MICROPOROUS MATERIALS, 1996, 6 (5-6) :331-340

[10] Triple-quantum MAS-NMR of quadrupolar nuclei [J].

Fernandez, C ;

Amoureux, JP .

SOLID STATE NUCLEAR MAGNETIC RESONANCE, 1996, 5 (04) :315-321