The complete oxidation of a volatile organic compound (toluene) was carried out over oxides of various metals (Cu, Mn, Fe, V, Mo, Co, Ni and Zn) supported with γ-Al2O3 catalyst. It was found that Cu/γ-Al2O3 was the best catalyst among them. With increasing calcination temperature, the specific surface areas and the surface oxygen of the catalyst decreased and, as a result, the catalytic activity decreased. Copper loadings on γ-Al2O3 had an influence on catalytic activity, and it was observed that 5 wt% Cu/γ-Al2O3 catalyst was the most active. Using TiO2 (rutile) and SiO2 as support instead of γ-Al2O3, the sequence of copper crystallinity degree with respect to supports was SiO2 > TiO2 (rutile) > γ-Al2O3, which was the opposite of the catalytic activity sequence.
Research on Chemical Intermediates – Springer Journals
Published: Oct 13, 2004
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