摘要：为得到更加密实的碳纳米管聚团弹性体,使之成作为一种能量吸收材料,在化学气相沉积制备碳纳米管过程中,提出通水提高Co-Mo-Al₂O₃催化剂裂解乙烯的活性,以便在短时间内促进碳纳米管快速生长的方法,可将碳纳米管聚团密度由40~65 kg/m³提高至120~140 kg/m³。结果表明,所得碳纳米管聚团结构具有明显的二级聚团孔结构分布特征,二级聚团压缩响应特征,并具有明显的高密度压缩体的优点,能够在较小的体积吸收更多能量。

关键词：碳纳米管;聚团;结构调变

Abstract： To obtained carbon nanotubes agglomerate with high density， potentially used as energy-adsorbing materials， the method of adding water in the conventional chemical vapor deposition process was proposed. The effect of water was to increase the activity of the Co-Mo-Al₂O₃ catalyst for decomposing ethylene and to increase the amount of carbon nanotubes drastically in short time. By this way， the density of carbon nanotubes agglomerate increased from 40~65 kg/m³ to 120~140 kg/m³. The results showed that the as-obtained carbon nanotubes agglomerates had obvious multi-scale pore size distribution and the secondary stage compression behaviors， which had advantages to become more compact structure to absorb large amounts of energy in volumetric view. 

Keywords： carbon nanotubes； agglomerate； structure control