Hydrogen spillover from a metal oxide catalyst onto carbon nanotubes - Implications for hydrogen storage

被引：208

作者：

Lueking, A ^{[1
]}

Yang, RT ^{[1
]}

机构：

[1] Univ Michigan, Dept Chem Engn, Ann Arbor, MI 48109 USA

来源：

JOURNAL OF CATALYSIS | 2002年 / 206卷 / 01期

关键词：

hydrogen storage; carbon nanotubes; mutt-wall; metal oxides;

D O I：

10.1006/jcat.2001.3472

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 storage on multiwalled nanotubes (MWNTs) was dependent on the degree of catalyst removal. At atmospheric pressure, removal of the catalyst decreased the uptake from 0.6% to below detection limits. Hydrogen uptake of the metal oxide catalyst ranged from 0.25 to 0.98%, depending on surface area. Normalization by metal content and temperature-programmed desorption studies suggest hydrogen dissociation and subsequent spillover to the MWNT. Metal-support interactions were key to the spillover; dry mixing of the MWNT and catalyst did not enhance storage, whereas in situ production increased storage by 40%. The moderate temperature range of this material suggests a novel material for hydrogen storage applications. (C) 2002 Elsevier Science (USA).

引用

页码：165 / 168

页数：4