scholarly journals Synthesize multi-walled carbon nanotubes via catalytic chemical vapour deposition method on Fe-Ni bimetallic catalyst supported on kaolin

2017 ◽  
Vol 21 ◽  
pp. 33-50 ◽  
Author(s):  
A Aliyu ◽  
AS Abdulkareem ◽  
AS Kovo ◽  
OK Abubakre ◽  
JO Tijani ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapour Deposition ◽  
Vapour Deposition ◽  
Bimetallic Catalyst ◽  
Chemical Vapour ◽  
Deposition Method ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Chemical Vapour Deposition Method

The use of calcination in exposing the entrapped Fe particles from multi-walled carbon nanotubes grown by chemical vapour deposition

2008 ◽  
Vol 94 (3) ◽  
pp. 585-591 ◽  
Author(s):  
Sreejarani K. Pillai ◽  
Letlhogonolo Matlhoko ◽  
Chris Arendse ◽  
Suprakas Sinha Ray ◽  
Mathew Moodley
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapour Deposition ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Catalytic synthesis of carbon nanotubes from the decomposition of methane over a Ni–Co/La2O3 catalyst

2009 ◽  
Vol 87 (1) ◽  
pp. 47-53 ◽  
Author(s):  
Long Chen ◽  
Haitao Liu ◽  
Keli Yang ◽  
Jiankang Wang ◽  
Xiaolai Wang
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapour Deposition ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Single Step ◽  
Methane Decomposition ◽  
Gravimetric Analysis ◽  
Catalyst Composition ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

The production of multi-walled carbon nanotubes (MWNTs) by the catalytic chemical vapour deposition (CCVD) method was examined over a series of Ni–Co/La2O3 catalysts with methane as the carbon source. The catalyst composition and the reaction conditions were optimized by analyzing the effluent gas with gas chromatography. Various techniques, such as X-ray diffraction (XRD), Transmission electron microscopy (TEM), Raman spectra, and Thermal gravimetric analysis (TGA) were used to characterize the catalysts and products. The results indicate that the unreduced catalyst 30Ni–10Co/La2O3 showed the highest activity for methane decomposition, and the highest carbon yield, being 624.2%, was obtained over this catalyst at 700 °C after 60 min of reaction with hydrogen as carrier gas. TGA results suggest that the purity of carbon nanotubes (CNTs) can reach up to 98 wt% after a single-step purification by hydrochloric acid.Key words: carbon nanotubes, catalytic chemical vapour deposition, methane decomposition, Ni–Co/La2O3 catalyst.

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