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in Wiley InterScience (www.interscience.wiley.com).A series of mixed oxides supported on TiO 2 (Mn 12y Cu y O x /TiO 2 ) synthesized by incipient wetness impregnation method have been characterized and tested for toluene oxidation volatile organic compounds (model). For all catalysts, the total conversion (100%) of toluene into CO 2 was obtained at temperatures higher than 2408C with no catalyst deactivation. At lower temperatures, a gradual deactivation was observed. The most efficient catalyst was Mn 0.5 Cu 0.5 O x /TiO 2 (noted MnCuO x /T). Several characterization techniques, XRD, TPR, BET, and TG/DT analysis, were used to explain the catalytic performances. The results allowed attributing the higher activity of MnCuO x /T to the formation of Mn 1.6 Cu 1.4 O 4 spinel phase. It has been also demonstrated that the mobility of the catalyst network oxygen is a determining parameter of the catalytic activity. The decrease of activity at a low temperature is related to the adsorption of high molecular weight carbonaceous compounds. However, the catalytic activity is easily regenerated by heating in air flow at 3008C.

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