Catalysis Letters, Vol.120, No.1-2, 82-85, 2008
XPS characterization of CeO2 catalyst for hydrogenation of benzoic acid to benzaldehyde
The CeO2 catalysts for hydrogenation of benzoic acid to benzaldehyde were characterized by X-ray photoelectron spectroscopy (XPS). The results indicate the catalyst deactivation is due to the coke formation and the valence changes of Ce over the catalyst.