HYDROGEN ABSORPTION DESORPTION PROPERTIES OF UCO

被引：0
|
作者：
YAMAMOTO, T [1 ]
KAYANO, H [1 ]
SINAGA, S [1 ]
ONO, F [1 ]
TANAKA, S [1 ]
YAMAWAKI, M [1 ]
机构：
[1] UNIV TOKYO,FAC ENGN,NUCL ENGN RES LAB,TOKAI,IBARAKI 31911,JAPAN
来源：
JOURNAL OF THE LESS-COMMON METALS | 1991年 / 172卷
关键词：
D O I：
暂无
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：
UCo absorbs hydrogen to form UCoH2.7 powder below 423 K at 10(5) Pa. Although it dehydrogenates reversibly below 423 K, two-phase mixtures of UH3 and UCo2 appear above 473 K, which can be explained on the basis of the free energy differences. The pyrophoricity of the hydrogen storage system based on UCo is expected to be lower than that based on pure uranium because the two-phase mixtures recycle to UCo after complete desorption above 673 K and uranium metal rarely appears in the hydrogen absorption-desorption cycle. However, the decomposition pressure at low temperatures needs to be reduced in order to use this compound for tritium storage.
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页码：71 / 78
页数：8
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