Structural Effects of Cerium Oxides on Their Thermal Stability and Catalytic Performance in Propane Oxidation Dehydrogenation

The low-dimensional ceria nanorods and nanoparticles were prepared by wet chemical methods. The structural effect on the thermal stability of CeO2 has been well investigated by in situ X-ray powder diffraction, transmission electron microscopy, and N-2 physisorption, revealing a superior stability of CeO2 nanorods. CeO2-supported V2O5 catalysts were prepared by the incipient wetness impregnation method and their catalytic performance in the oxidative dehydrogenation of propane was evaluated. The V2O5/CeO2 nanorods catalysts display an improved selectivity for propene, probably arising from the immediate diffusion of propene product due to the open characteristic of rod-like structure.