CATION EFFECTS ON P-31 MAS NMR CHEMICAL-SHIFTS OF METAPHOSPHATE GLASSES

被引：130

作者：

BROW, RK

PHIFER, CC

TURNER, GL

KIRKPATRICK, RJ

机构：

[1] SPECTRAL DATA SERV, CHAMPAIGN, IL 61820 USA

[2] UNIV ILLINOIS, DEPT GEOL, URBANA, IL 61801 USA

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1991年 / 74卷 / 06期

关键词：

BONDING; GLASS; PHOSPHATES; STRUCTURE; SPECTROSCOPY;

D O I：

10.1111/j.1151-2916.1991.tb04099.x

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 have examined a series of metaphosphate glasses with P-31 magic angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy. Increasing the ionic potential (Z/a) of the modifying cation from sodium to magnesium causes a systematic change to more shielded isotropic chemical shifts with a concomitant increase in the peak FWHM. These spectral trends are consistent with counterion-induced modifications to the ionic character of the P-O bond. Such modifications do not produce significant changes in either the chemical shift anisotropy or the asymmetry parameter.

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页码：1287 / 1290

页数：4

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