Reaction Kinetics and Catalysis Letters, Vol.72, No.1, 57-63, 2001
Direct oxidation of propylene with molecular oxygen over Ti-modified sulfated zirconia catalyst, 1. Characterization of the catalyst and catalytic performances
Some zirconia-based catalysts were tested for the reaction of propylene in the presence of molecular O-2 without any additive at 428 K under atmospheric pressure. The catalyst TiSZ, which was prepared by a direct impregnation of titanium sulfate on amorphous zirconia, was found to show the highest yields of oxygenated compounds such as propylene oxide, with C4-C6 hydrocarbons. Characterization of the catalysts, by using XRD, XPS, and NH3-TPD, exhibited that the catalytic performances were dependent on the surface acidity.