Abstract
The catalytic oxidation of toluene was investigated over CeO2-MnOx catalysts with the different cerium sources. The CeO2-MnOx catalyst synthesized by ceric ammonium nitrate (marked as Cat-A) possessed the superior catalytic performance among the samples. Notably, the synergistic effect between CeO2 and MnOx could provide more amounts of oxygen vacancy, the highest concentration of Mn3+ and the highest Ce3+ contents, which resulted in the outstanding oxygen mobility, causing the improvement of catalytic activity. In brief, the catalytic performance of CeO2-MnOx was closely related to the different modulation cerium sources during the preparation process.
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