Silica embedded metal hydrides

被引:15
作者
Heung, LK [1 ]
Wicks, CG [1 ]
机构
[1] Westinghouse Savannah River Co, Aiken, SC 29808 USA
关键词
metal hydride; silica composite; porous;
D O I
10.1016/S0925-8388(99)00333-3
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A new class of composite materials were developed which encapsulate metal hydride particles in a porous silica matrix. The particles were embedded in two different types of silica matrices, which successfully converted the small metal hydride particles into large granules suitable for packing gas separation columns. The granules absorbed hydrogen readily and withstood many hydrogen absorption cycles without producing fines. The porosity of the silica matrices was optimized so that the pores were large enough to allow hydrogen to easily move within the matrix and react with the metal hydride particles, but small enough to art as a filter to prevent passage of larger molecule including harmful impurities. (C) 1999 Elsevier Science S.A. All rights reserved.
引用
收藏
页码:446 / 451
页数:6
相关论文
共 3 条
[1]  
BERSHADSKY E, 1988, METAL HYDROGEN SYSTE, V2, P1373
[2]  
GOODELL PD, 1986, DOEID12520
[3]  
Thomas IM, 1988, SOL GEL TECHNOLOGY T, P2