Abstract
A series of Mn–Ce oxides were prepared using a redox-precipitation method and the complete catalytic oxidation of o-xylene was examined. Catalytic activity was evaluated in terms of both o-xylene conversion and CO 2 yield. The effects of the Mn at/Ce at atomic ratio and calcination temperature on the features of catalyst structure and catalytic behavior were examined. When the Mn at/Ce at ratio was 1.5 and the catalyst was calcined at 400 °C, the conversion of o-xylene was 100% and the CO 2 yield was 100% at 240 °C. X-ray diffraction (XRD), X-ray fluorescence (XRF), X-ray photoelectron spectroscopy (XPS), and hydrogen temperature-programmed reduction (H 2-TPR) studies revealed that the catalysts prepared via the redox-precipitation method possessed a homogenous dispersion of amorphous MnO 2 and CeO 2 nanoparticles; in the main active phase, MnO 2 provided available oxygen species and CeO 2 enhanced oxygen mobility. The synergistic effects between MnO 2 and CeO 2 potentiated the catalytic activity necessary for the complete catalytic oxidation of o-xylene.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
