Abstract
The low reaction temperature for synthesis of carbon nanotubes (CNTs) with high quality was investigated by Ni/MgO catalytic decomposition of CH4 using a home-designed micro-fluidized bed reactor. It was found that the low and mild temperature at 500∼550°C would bring the dynamic equilibrium between the rate of CH4 decomposition and the rate of carbon diffusion over Ni catalyst for continuous precipitation of CNTs in the micro-fluidized bed condition. The CNTs synthesized at the corresponding conditions exhibited high quality with relatively small and mean outer diameter, less defect, and high purity.
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