摘要
碳纳米管是一种新型碳材料。催化剂是碳纳米管制备中的重要影响因素,而燃烧法合成碳纳米管必须使用催化剂。本文利用V型热解火焰来研究碳纳米管的合成条件,主要在理论和实验两个方面分析研究了催化剂的作用、种类、颗粒大小、失活等方面对碳纳米管生长的影响,从而为V型热解火焰法合成碳纳米管时催化剂的选取提供依据。理论分析和实验结果表明:Fe(CO)_5作为一种铁剂催化剂非常适合催化CO合成碳纳米管。利用碳的"溶解-扩散-析出"机理可以用来解释Fe(CO)_5催化CO合成碳纳米管的过程。
Carbon nanotube is a type of new carbon material. Catalyst is the important factor in the carbon nanotube preparation. Flame synthesis carbon nanotubes must make use of catalyst. This article use the V-type pyrolysis flame to study the carbon nanotubes synthetic conditions. In theory and experimental two aspects,the thesis studied the impact of the catalytic role, types, particle size, invalidation to the carbon nanotube growth. This will provide the basis of catalyst selected in the V-type pyrolysis flame. Theoretical analysis and test results show that Fe （CO）5, as a kind of catalyst, is very suitable for synthesis carbon nanotubes. The carbon ＂dissolved-proliferation-separate out＂ theory can be used to explain Fe（CO）5 catalyses CO in synthetic carbon nanotubes process.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2009年第4期703-706,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金项目(No.50676032)
