Diffusion anisotropy in natural chabazite

被引：28

作者：

Bar, NK

Karger, J

Pfeifer, H

Schafer, H

Schmitz, W

机构：

[1] Univ Leipzig, Fak Phys & Geowissensch, D-04103 Leipzig, Germany

[2] Univ Leipzig, Fak Chem & Mineral, D-04275 Leipzig, Germany

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 1998年 / 22卷 / 1-3期

关键词：

diffusion; anisotropy; water; chabazite; pulsed field gradient NMR; natural zeolites;

D O I：

10.1016/S1387-1811(98)00083-3

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The pulsed field gradient NMR technique is applied to study water diffusivity in natural chabazite. Information about diffusion anisotropy is deduced from both single-crystallite measurements and analysing the shape of the NMR spin-echo attenuation. With both methods the diffusivity has been found to be orientation-dependent with a: ratio between the maximum and minimum diffusivity being of the order of 2. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：289 / 295

页数：7

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