Synthesis and hydrogen storage properties of carbon nanotubes

被引：46
|
作者：
Rakhi, R. B. [1 ,2 ]
Sethupathi, K. [2 ]
Ramaprabhu, S. [1 ]
机构：
[1] Indian Inst Technol, Alternat Energy Technol & Magnet Mat Lab, Madras 600036, Tamil Nadu, India
[2] Indian Inst Technol, Dept Phys, Low Temp Lab, Madras 600036, Tamil Nadu, India
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2008年 / 33卷 / 01期
关键词：
carbon nanotubes; hydrogen adsorption; chemical vapor deposition; alloy hydride; DyNi2 alloy hydride;
D O I：
10.1016/j.ijhydene.2007.07.037
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：
Multi-walled carbon nanotubes (MWNT) have been synthesized by chemical vapor decomposition of acetylene over rare-earth (RE) based AB(2) alloy hydride catalysts. The AB(2) alloy hydride catalysts have been prepared by hydrogen decrepitation technique and characterized by scanning electron microscopy. The advantage of this novel method of obtaining catalysts has been discussed. The as-grown carbon nanotubes were purified by acid and heat treatments and characterized using powder X-ray diffraction, transmission electron microscopy, scanning electron microscopy, thermo gravimetric analysis and Raman spectroscopy. Hydrogen adsorption measurements were carried out on as-prepared and purified MWNT in the temperature range of 143-373 K and pressure range of 10-100 bar using a high pressure hydrogen adsorption setup and the results have been discussed. A maximum hydrogen storage capacity of 3.5 wt% is obtained for purified MWNT prepared with DyNi2 alloy hydride catalyst at 143 K and 75 bar. (C) 2007 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：381 / 386
页数：6
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