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Highly ordered MCM-41 mesoporous molecular sieves in which silicon was isomorphously substituted with 0.5–4wt.% cobalt were synthesized using an alkyl template with a 16 carbon atoms alkyl chain length. These materials were used as catalysts for the synthesis of uniform diameter single wall carbon nanotubes (SWNT) by CO disproportionation (Boudouard reaction). The SWNT synthesis conditions were identical...
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