Water assisted synthesis of double-walled carbon nanotubes with a narrow diameter distribution from methane over a Co-Mo/MgO catalyst

Wang, Gaowei, Chen, Jiuling, Tian, Ye, Jin, Yi and Li, Yongdan (2012) Water assisted synthesis of double-walled carbon nanotubes with a narrow diameter distribution from methane over a Co-Mo/MgO catalyst. Catalysis Today, 183 1: 26-33. doi:10.1016/j.cattod.2011.07.004


Author Wang, Gaowei
Chen, Jiuling
Tian, Ye
Jin, Yi
Li, Yongdan
Title Water assisted synthesis of double-walled carbon nanotubes with a narrow diameter distribution from methane over a Co-Mo/MgO catalyst
Journal name Catalysis Today   Check publisher's open access policy
ISSN 0920-5861
1873-4308
Publication date 2012-03-20
Year available 2011
Sub-type Article (original research)
DOI 10.1016/j.cattod.2011.07.004
Volume 183
Issue 1
Start page 26
End page 33
Total pages 8
Editor Ning Yan
Paul J. Dyson
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2012
Language eng
Abstract Double-walled carbon nanotubes (DWCNTs) with a narrow diameter distribution have been synthesized with the assistance of water vapor in a fluidized-bed reactor from methane over a Co–Mo/MgO catalyst. The results reveal that an appropriate amount of water enhances the carbon yield and also changes the diameter distribution of the DWCNTs. An excess amount of water depresses the formation of carbon nanotubes due to the stabilization of the Co–molybdate phase. Water facilitates the formation of adjacent Co and CoO phases, and therefore methane activation and carbon nanotube formation. The formation of adjacent Co and CoO phases results in smaller Co nanoparticles. DWCNTs with narrow diameter distribution are produced with this method at a low cost.
Keyword DWCNTs growth
Narrow diameter distribution
Water-assisted CVD
Co-Mo/MgO catalyst
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 3 August 2011. Special issue - Nanocatalysis: synthesis, characterization, application and mechanisms.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2012 Collection
 
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