Hydrogen adsorption and desorption by carbon materials

被引:66
作者
Kojima, Yoshitsugu [1 ]
Kawai, Yasuaki
Koiwai, Akihiko
Suzuki, Nobuaki
Haga, Tetstuya
Hioki, Tatsumi
Tange, Kyoichi
机构
[1] Toyota Cent Res & Dev Labs Inc, Nagakute, Aichi 4801192, Japan
[2] Toyota Motor Co Ltd, Mat Engn Div 3, Shizuoka 4101193, Japan
关键词
hydrogen absorbing materials; gas-solid reaction; transmisson electron microscopy; thermodynamic properties; high-pressure;
D O I
10.1016/j.jallcom.2005.09.077
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
Hydrogen adsorption and desorption in different carbon materials were determined at 77 and 296 K. Superactivated carbon having specific surface area of 3220 m(2)/g, adsorbed and desorbed 5 wt.% of hydrogen at 77 K and 1.3 wt.% of hydrogen at 296 K. The values were greater than those of conventional activated carbon, graphite nanofiber and single-walled carbon nanotube. The hydrogen adsorption capacities of the various carbon materials were given as a function of the specific surface area. According to the Clausius-Clapeyron equation, the heat of adsorption of the superactivated carbon was about 6 kJ/mol H-2. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:204 / 208
页数:5
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