Nickelate catalysts were prepared by a modified Pechini method. Single phases of La2NiO4 (LN) and La1.9Sr0.1NiO4 were obtained after calcination at 1000C in air. O2-temperature-programmed desorption experiments showed that, in spite of a quite small specific area, this material exhibited extremely high bulk O mobility since interstitial O species could be exchanged with the gas phase at temperatures as low as 230C. These O species could react with propane to mainly form CO2 from 300C.
Oxygen Mobility in Lanthanum Nickelate Catalysts for Deep Oxidation of Propane. A.Boreave, H.Tan, V.Roche, P.Vernoux, J.P.Deloume: Solid State Ionics, 2008, 179[21-26], 1071-5