Silica embedded metal hydrides

[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.

[发布日期] 1999-12-20

[效力级别]  Proceedings Paper

[关键词] metal hydride;silica composite;porous