Catalytic synthesis of carbon nanotubes over ordered mesoporous matrices
Katok, K.V., Tertykh, V.A., Brichka, S.Ya and Prikhod'ko, G.P. (2006) Catalytic synthesis of carbon nanotubes over ordered mesoporous matrices Journal of Thermal Analysis and Calorimetry, 86 (1). pp. 109-114. ISSN 1388-6150
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Abstract Pyrolytic decomposition of acetylene over the surface of nickel-, cobalt- and iron-containing ordered mesoporous MCM-41 silicas has been studied. Catalytically active matrices have been prepared by chemisorption of volatile metal acetylacetonate complexes on the silica surface. Reduction of the supported metal-containing compounds was carried out in hydrogen or acetylene atmosphere. Acetylene is used not only as a source of carbon in synthesis of the nanostructures but also as a reagent capable of reducing metal ions in the surface chemical compounds. Formation of carbon nanotubes and nanofibers is shown to depend on the pyrolysis conditions.
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