Water dynamics in controlled pore silica glasses

被引：6

作者：

Bordallo, HN

Herwig, KW

Dozier, WD

Drake, F

机构：

[1] Argonne Natl Lab, Intense Pulsed Neutron Source, Argonne, IL 60439 USA

[2] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[3] Fannie Mae, Washington, DC 20016 USA

[4] ExxonMobil Res & Engn Co, Annandale, NJ 08801 USA

来源：

JOURNAL DE PHYSIQUE IV | 2000年 / 10卷 / P7期

关键词：

D O I：

10.1051/jp4:2000741

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Water in porous silica glass is a suitable system for investigating the effect of confinement on translational diffusion. These systems are important because of their relevance in catalytic and separation processes. Here quasi-elastic neutron scattering experiments at room temperature on water-filled controlled-pore glasses with radius of 15, 24 and 32 Angstrom, are presented and analyzed using the random-jump diffusion model. Both the average residence time and the mean jump distance increase with decreasing pore radius.

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收藏

页码：207 / 210

页数：4

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