92
P. Chagas et al. / Applied Catalysis A: General 454 (2013) 88–92
niobium oxyhydroxide prepared in the presence of CTAB surfac-
tant as an efficient heterogeneous catalyst. The presence of the
hydrophobic moiety was verified by TG measurements. These novel
results describe, for the first time, the use of a synthetic niobium
oxide in liquid phase at low temperature (25 ◦C) in the presence of
hydrogen peroxide without metal impregnation. Furthermore, the
catalyst can be reused without deactivation, which is an advantage
compared to others catalytic systems.
Acknowledgments
This work was supported by the CNPq, CBMM (Brazil), and
FAPEMIG.
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4. Conclusion
High conversions can be achieved for the oxidation of cyclo-
hexene to epoxide specie with high selectivity, using a synthetic