Carbon nanotubes production over Co/silica catalysts

K. Hernadi, A. Fonseca, P. Piedigrosso, M. Delvaux, J. B. Nagy, D. Bernaerts, J. Riga

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For the catalytic synthesis of carbon nanotubes having fullerene-like diameters, a detailed description of the catalyst preparation is given. Silica-supported catalyst samples (prepared from Co-acetate solution of different pHJ were tested in the decomposition of acetylene, Catalysts with various pretreatments (different calcination temperature, time and atmosphere) were compared in the carbon nanotubes production and characterized by X-ray photoelectron spectroscopy (XPS). The quality and the quantity of the buekytubes were studied by transmission electron microscopy (TEM). As a final conclusion, it is possible that changing the pH of the solution during catalyst preparation allows control of the quality of the carbon nanotubes, namely the amount of turbostratic straight and helical tubes.

Original languageEnglish
Pages (from-to)229-238
Number of pages10
JournalCatalysis Letters
Issue number3
Publication statusPublished - Jan 1 1997



  • Carbon nanotube
  • Catalytic synthesis
  • Co-catalyst
  • Silica support

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Cite this

Hernadi, K., Fonseca, A., Piedigrosso, P., Delvaux, M., Nagy, J. B., Bernaerts, D., & Riga, J. (1997). Carbon nanotubes production over Co/silica catalysts. Catalysis Letters, 48(3), 229-238.