Abstract
Alumina-supported catalysts containing different transition metals such as Cu, Cr, Mn, Zn, Co, W were investigated for their activity in the selective oxidation of toluene. Catalytic oxidation of toluene was investigated at atmospheric pressure in a fixed bed flow reactor system over transition metals with <TEX>$Al_2O_3$</TEX> catalyst. The result showed the order of catalytic activities for the complete oxidation of toluene was Mn > Cu> Cr> Co> W> Zn for 5wt.% transition <TEX>$metals/Al_2O_3$</TEX>. <TEX>$Mn/Al_2O_3$</TEX> catalysts containing different amount of Mn were characterized by X-ray diffraction spectroscopy for decision of loading amount of metal to alumina. 5 wt.%<TEX>$Mn/Al_2O_3$</TEX> catalyst exhibits the highest catalytic activity, over which the toluene conversion was up to 90% at a temperature of <TEX>$289^{\circ}C$</TEX>.
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