II International Symposium on Carbon for Catalysis ABSTRACTS

PP-I-44
Figure 1. From left to right, TEM and SEM of MWNTs, and TEM of the heat-treated MWNTs
The treatment at 2600°C decreases the specific surface area, removes the oxygenate groups on
the carbon surfaces and increases the purity on the MWNTs. The heat treated MWNTs used
as catalysts for the 9,10-dihydroanthracene oxidation in anthracene, shows a better catalytic
activity compared to MWNTs without post-treatment and to expensed carbon. The carbon
graphitization level and the lower oxygen concentration on the heat-treated carbon nanotubes,
which favorises the reactants adsorption on the nanotubes surface, increase the
di-hydroanthracene conversion into anthracene. Similar results have already been obtained.
The authors have observed a conversion reaching 93 % over activated charcoal in the same
reaction conditions [8].
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