摘要
研究了以乙炔为基本原料，用Ｎ２做载流气体；以纳米钻颗粒为催化剂在７００～８００℃常压下纳米碳管的宏观量制备．粗产品中纳米碳管的含量接近５０％，而且纳米碳管缺陷很少，直而长，石墨化好．纳米碳管的形核过程是因为碳在催化剂表面分布不均匀造成的．纳米碳管的生长极限在１５ｍｉｎ左右，然后生长变得缓慢，纳米碳管的一般长度在５～３０μｍ．
Acetylene cracked under normal pressure at 700similar to800degreesC with active nanoscale cobalt particles as catalyst and carbon nanotubes were prepared on a large scale. The final product rate was above 50wt% after 10min growth, and also defects were almost nonexistent. The lengthes of the carbon nanotubes ranged from 5 to 30mum. Non-well distributed carbon on catalyst surface accelerated the nucleating process. The growing time limitation was about 15min and then growing process became slow.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第2期337-342,共6页
Journal of Inorganic Materials
基金
国家自然科学基金(59872030)
