A parametric study of carbon nanotubes production from tetrachloroethylene using a supersonic thermal plasma jet
作者： D. Harbec , J.-L. Meunier , L. Guo , J. Jureidini
DOI: 10.1016/J.CARBON.2007.05.025
关键词:
摘要: In this study we produce carbon nanotubes (CNT) using a DC non-transferred plasma torch operated at power of 30 kW in argon and producing supersonic jet. Tetrachloroethylene (TCE) is used as the raw material. As an initial demonstration jet approach attempt to simplify flow/nucleation fields metal catalyst nanoparticles, erosion tungsten electrodes source vapours nucleating situ into catalytic nanoparticles within CNT mass yield values are based on thermogravimetry analysis correlated electron microscopy Raman spectroscopy. A parametric made evaluate influence different operating parameters yields nanotubes. The rapid quench generated by jet, high vapour pressures control temperature profile nozzle enable growth CNT. Decreasing reactor pressure from 0.66 0.26 atm leads increase 22%. High obtained increasing TCE feed rate. From 0.05 0.15 mol/min, improved 38.6 53.7 wt%. Beyond mol TCE/min, levels around 50 start-up phase, time operation controls profile, which turn drastically increases 0 8.2 wt% between 3rd 4th minute after 5th minute.
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