Low temperature catalytic performance of nanosized Ti–Ni–O for oxidative dehydrogenation of propane to propene

Nanosized Ti–Ni–O catalysts prepared by a modified sol–gel method have been investigated in the oxidative dehydrogenation of propane (ODP) to propene. At 300 8C the yield to propene of 12.1% was obtained on 9.1 wt.% Ti–Ni–O catalyst with the selectivity of 43%. The continued variety of lattice parameter and variation of chemical value of nickel and titanium ion on the surface indicates that there are strong interactions of TiO2 and NiO. The decreased low temperature oxygen desorption and the weaker reducibility seems to be responsible for the decreased activity and enhanced selectivity of propane oxidative dehydrogenation over Ti–Ni–O catalysts.