CeO2-catalyzed ozonation of phenol

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2010-12-01
Autores
Pinheiro da Silva, M. F.
Soeira, L. S.
Daghastanli, K. R. P.
Martins, T. S. [UNIFESP]
Cuccovia, I. M.
Freire, R. S.
Isolani, P. C.
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Three different cerium citrate-based precursors were used for synthesizing CeO2 through thermal treatment. Three morphological types of CeO2 were obtained. Characterization of these oxides was carried out by XRD patterns, SEM microscopy, N-2 adsorption isotherms, Raman spectroscopy, zeta potential, and UV/Vis luminescence. Ozonation of phenol catalyzed by CeO2 was studied as a representative reaction of environmental interest. the differences on the catalytic activity showed by these three oxides could be correlated to amounts of Ce3+ on CeO2 surface and, consequently, to the demand for oxygen needed to burn each precursor.
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Journal of Thermal Analysis and Calorimetry. Dordrecht: Springer, v. 102, n. 3, p. 907-913, 2010.