Low Cost Growth Route for Single-walled Carbon Nanotubes from Decomposition of Acetylene over Magnesia Supported Fe-Mo Catalyst

Md. Shajahan; Young Hwan Mo; Kee Suk Nahm

Korean Journal of Chemical Engineering, Vol.20, No.3, 566-571, May, 2003

Md. Shajahan, Young Hwan Mo, and Kee Suk Nahm^†

School of Chemical Engineering and Technology, Chonbuk National University, Chonju 561-756, Korea

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A large amount of single wall carbon nanotubes (SWNTs) was successfully produced by thermal decomposition of C2H2 at 800 ℃ over magnesia supported Fe-Mo bimetallic catalysts in a tubular flow reactor under an atmosphere of hydrogen flow. The growth density of SWNTs increased with increasing the weight percent of the catalyst metals (wt% ratio of two metals: 50 : 50) supported on magnesia (MgO) from 5 to 30 wt%. The yield of SWNTs reached 144.3% over 30 wt% metal-loaded catalyst. Raman measurements showed the growth of bundle type SWNTs with diameters ranging from 0.81 to 1.96 nm. The growth of SWNTs was also identified by thermal gravimetric analysis (TGA) and Raman spectroscopy.

Keywords:Single-Walled Carbon Nanotubes;Fe-Mo/MgO Catalyst;Low-Cost Growth;Acetylene;RTCVD

[References]

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[10] Hafner HJ, Bronikowski JM, Azamian RB, Nikolaev P, Rinzler GA, Colbert TD, Smith AK, Smalley ER, Chem. Phys. Lett., 269, 195 (1998)

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