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Effect of Fe2O3 precursors on physicochemical and catalytic properties of CuO/Fe2O3 system

2011; Elsevier BV; Volume: 9; Linguagem: Inglês

10.1016/j.arabjc.2011.07.026

1878-5379

Nabil H. Amin, Laila I. Ali, Sahar A. El-Molla, Anwer A. Ebrahim, Hala R. Mahmoud,

Catalysis and Oxidation Reactions

CuO/Fe2O3 catalysts were prepared by impregnation method and calcined at 400 °C. The effect of changing the precursors of Fe2O3 and CuO loading on thermal, crystal, surface, spectral and catalytic properties of the catalysts were characterized by TG/DTG/DTA, XRD, N2-adsorption at −196 °C, FT-IR and the catalytic decomposition of H2O2 at 30 °C. The results obtained revealed that the investigated catalysts consisted of nanosized Fe2O3 as a major phase besides CuFe2O4 phase. The precursor of Fe2O3 (nitrate or sulfate) affects the thermal properties of CuO/Fe2O3 system. The SBET of CuO/Fe2O3 system calcined at 400 °C increases with using nitrate precursor of Fe2O3. The catalytic activity of H2O2 decomposition on all CuFeOn catalysts (nitrate precursor) is higher than that of CuFeOs catalysts (sulfate precursor).