A parametric study of methane decomposition into carbon nanotubes over 8Co-2Mo/Al<sub>2</sub>O<sub>3</sub> catalyst

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摘要 The effects of reaction temperature, partial pressure of methane, catalyst weight and gas hourly space velocity (GHSV) on methane decomposition were reported. The decomposition reaction was performed in a vertical fixed-bed reactor over 8Co-2Mo/Al₂O₃ catalyst. The experimental results show that these four process parameters studied had vital effects on carbon yield. As revealed by the electron microscopy and Raman spectroscopy analyses, the reaction temperature and GHSV governed the average diameter, the diameter distribution and the degree of graphitization of the synthesized carbon nanotubes (CNTs). Also, an evidence is presented to show that higher temperatures and higher GHSV favored the formation of better-graphitized CNTs with larger diameters.

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	Siang-Piao Chai
	Choon-Ming Seah
	Abdul Rahman Mohamed

关键词： methane chemical vapor deposition Co-Mo/Al2O3 carbon nanotubes parametric study

收稿日期: 2010-08-09; 发布日期: 2011-01-30

通讯作者 Abdul Rahman Mohamed Email: chrahman@eng.usm.my

引用本文:

Siang-Piao Chai, Choon-Ming Seah, Abdul Rahman Mohamed .A parametric study of methane decomposition into carbon nanotubes over 8Co-2Mo/Al₂O₃ catalyst[J] 天然气化学 , 2011,V20(1): 84-89

Siang-Piao Chai, Choon-Ming Seah, Abdul Rahman Mohamed .A parametric study of methane decomposition into carbon nanotubes over 8Co-2Mo/Al₂O₃ catalyst[J] Journal of Energy Chemistry, 2011,V20(1): 84-89

链接本文:

http://www.jenergchem.org/CN/10.1016/S1003-9953(10)60151-X 或 http://www.jenergchem.org/CN/Y2011/V20/I1/84

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