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中文摘要：
以负载Fe的介孔分子筛Fe/MCM-41和Fe/ABW分别为催化剂,乙炔为碳源,采用化学气相沉积法对催化合成碳纳米管（CNTs）进行研究,讨论了反应温度、催化剂种类以及催化剂预处理对CNTs纯度和形貌的影响,通过场发射扫描电子显微镜、高分辨透射电子显微镜和X-射线衍射仪对产物的结构和形貌进行了表征和分析,并对CNTs的生长机理进行了推测.结果表明,在反应温度为700℃,两种不同的催化剂经H2还原后,催化生长出直径均匀（20nm～30nm）且晶化程度较好的CNTs.
英文摘要：
The chemical vapor deposition growth of carbon nanotubes （CNTs） from acetylene,catalyzed by mesoporous molecular sieves （Fe/MCM-41 and Fe/ABW） with different Fe-loading was investigated.The effects of the reaction temperature,catalyst kind and catalyst pretreatment were discussed.The structures and morphologies of the products were characterized by field emission scanning electron microscopy,high-resolution transmission electron microscopy,and X-ray diffraction,and the growth mechanism of CNTs was also proposed.The results show that CNTs with uniform diameter of 20 nm-30 nm and good crystallization degree were obtained using H2-reduced catalysts at 700 ℃.
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