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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Katok, K.V., Tertykh, V.A., Brichka, S.Y. et al. Catalytic synthesis of carbon nanotubes over ordered mesoporous matrices. J Therm Anal Calorim 86, 109–114 (2006). https://doi.org/10.1007/s10973-006-7584-4
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DOI: https://doi.org/10.1007/s10973-006-7584-4