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CVD synthesis of high-purity multiwalled carbon nanotubes using CaCO3 catalyst support for large-scale production

Authors
  • Couteau, E;
  • Hernadi, K;
  • Seo, Jin Won; 54732;
  • Thiên-Nga, L;
  • Mikó, Cs;
  • Gaál, R;
  • Forró, L;
Publication Date
Aug 01, 2003
Source
Lirias
Keywords
Language
English
License
Unknown
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Abstract

Multiwalled carbon nanotubes (MWCNTs) were synthesized in a catalytic reaction using CaCO3 as catalyst support. Impregnated with conventional catalysts CaCO3 enabled the production of MWCNTs in a fixed-bed flow reactor at relatively low reaction temperature. The purification was performed in one step: both metallic particles and catalyst support were dissolved in a diluted acid. Hence, disadvantages, namely multi-step processes and hazardous chemicals, were avoided. A further advantage of CaCO3 support is efficient and stable growth of MWCNTs. First results obtained in our new rotary-tube oven indicated high quality and pure MWCNTs with a yield of 100 g/day by this method. / status: published

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