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Oxidized Carbon Black as an Activator of Transesterification Reactions under Solvent-Free Conditions
Maria Rosaria Acocella1, Mario Maggio1, Chiara Ambrosio1
1Department of Chemistry and Biology, University of Salerno, Via Giovanni Paolo II, 132, Fisciano, Salerno 84084, Italy.
Abstract:
A metal-free procedure for oxidation of carbon black (CB), under mild and ecofriendly conditions, is described. The procedure, based on 5/1 w/w H2O2/H2SO4, when applied to high-surface-area CB, leads to oxidation contents (O/C = 0.66) comparable to those obtained for graphite with the more aggressive and metal-based Hummers method (O/C 0.63). Oxidized nanocarbons are able to activate transesterification reactions under solvent-free conditions. Activation of transesterification reactions is much more effective by oxidized CB than by graphene oxide.
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