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首页> 外文期刊>Applied Surface Science >Effect of reaction parameters on the growth of MWCNTs using mesoporous Sb/MCM-41 by chemical vapour deposition
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Effect of reaction parameters on the growth of MWCNTs using mesoporous Sb/MCM-41 by chemical vapour deposition

机译：Sb / MCM-41介孔化学气相沉积反应参数对MWCNTs生长的影响

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摘要

Mesoporous Si-MCM-41 molecular sieve was synthesized hydrothermally and different wt.% of Sb (1.0, 2.0,3.0,5.0,10.0,15.0 and 20.0) was loaded on it by wet impregnation method. The Sb/MCM-41 materials were characterized by various physico-chemical techniques such as XRD, TGA and TEM. The TEM image showed a honeycomb structure of the host material. They were used as catalytic templates for the growth of MWCNTs by CVD method with different temperatures at 700,800,900 and 1000 ℃ using acetylene as a carbon precursor. The reaction temperature was optimized for the better formation of MWCNTs and they were purified and then characterized by XRD, SEM, HR-TEM and Raman spectroscopy techniques. The formation of MWCNTs with diameter in the range of 4-6 nm was observed from HR-TEM. The good thermal stability and high productivity of catalyst observed in this study revealed that the 2 wt.% Sb loaded MCM-41 could be a promising support for the catalytic synthesis of MWCNTs at 800 ℃ by CVD method.
机译：水热合成介孔Si-MCM-41分子筛，并通过湿浸渍法将不同重量％的Sb（1.0、2.0、3.0、5.0、10.0、15.0和20.0）负载在其上。 Sb / MCM-41材料通过各种物理化学技术（例如XRD，TGA和TEM）进行了表征。 TEM图像显示主体材料的蜂窝状结构。以乙炔为碳前驱体，在700,800,900和1000℃不同温度下，用它们作为催化模板生长MWCNTs的模板。优化反应温度以更好地形成MWCNT，并纯化它们，然后通过XRD，SEM，HR-TEM和拉曼光谱技术进行表征。从HR-TEM观察到直径在4-6nm范围内的MWCNT的形成。这项研究观察到的良好的热稳定性和催化剂的高生产率表明，负载2 wt。％的Sb的MCM-41可以为用CVD方法在800℃催化合成MWCNTs提供有希望的支持。

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  • 来源
    《Applied Surface Science》 |2011年第3期|p.1045-1051|共7页
  • 作者

    R.Atchudan; A.Pandurangan; K. Subramanian;

  • 作者单位

    Department of Chemistry, Anna University, Chennai - 600025, India;

    Department of Chemistry, Anna University, Chennai - 600025, India,Institute of Catalysis and Petroleum Technology, Anna University, Chennai - 600025, India;

    Department of Chemistry, Anna University, Chennai - 600025, India;

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  • 正文语种 eng
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  • 关键词

    mesoporous material; MCM-41; MWCNT; CVD; acetylene; Sb/MCM-41;

    机译：介孔材料MCM-41;MWCNT;CVD;乙炔;锑/ MCM-41;

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