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Carbon nanotube synthesis and parametric study using CaCO3 nanocrystals as catalyst support by CVD

机译：碳纳米管合成及以CaCO3纳米晶为催化剂的化学沉积研究

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The preparation of multi-walled carbon nanotubes (MWCNTs) by chemical vapor deposition (CVD) method using nanocrystalline CaCO3 as metal catalyst support was investigated, where acetylene was used as carbon source, and Co, Fe and Ni, as well as their bimetallic compounds as the active component of the catalyst. The smaller size of the CaCO3 support led to a much higher yield of CNTs than previously reported. It was noteworthy that the best performance was Fe-Co nanoparticles, which gave a high yield of CNTs, as judged by experimental results. Growth temperature affected catalytic activity and the disintegration of the support. The raw product was purified to a high level, with little damage on the CNT structure, as confirmed by thermal gravimetric (TG), micro-Raman and transmission electron microscopy (TEM) analyses. (c) 2005 Elsevier B.V. All rights reserved.
机译：研究了以乙炔为碳源，Co，Fe，Ni及其双金属化合物为原料的纳米晶CaCO3作为金属催化剂载体的化学气相沉积（CVD）法制备多壁碳纳米管（MWCNTs）。作为催化剂的活性成分。 CaCO 3载体的较小尺寸导致CNT的产率比以前报道的高得多。值得注意的是，根据实验结果判断，性能最好的是Fe-Co纳米颗粒，纳米碳管的产率高。生长温度影响催化活性和载体的崩解。如通过热重量法（TG），显微拉曼光谱和透射电子显微镜（TEM）分析所证实的，将粗产物纯化至高水平，而对CNT结构几乎没有损害。 （c）2005 Elsevier B.V.保留所有权利。

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