Evidence of an Equimolar C₂H₂–CO₂ Reaction in the Synthesis of Carbon Nanotubes

Meeting point: Carbon nanotubes (CNTs) are produced by an equimolar reaction between C2H2 and CO2 (see scheme). CO2 can be introduced as a gas or a carbonate support of the metal particles. When CaCO3 is used, the growth of a nanotube stems from the triple-point junction, which corresponds to the area surrounding the metal support interface where CO2, C2H2, and the support meet. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z603764_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.