Structure of LaSrMO4 (M = Mn, Fe, Co, Ni, Cu) and their catalytic properties in the total oxidation of hexane

Abstract

Perovskite-type LaSrMO4 (M = Mn, Fe, Co, Ni, Cu) mixed oxides were prepared by the decomposition of amorphous citric and ethylenediaminetetraacetic acid complexes and investigated by the XRD, FTIR, BET, TPR, TPD and XPS-methods. Their catalytic behavior in the total oxidation of hexane was examined. The following activity order was found LaSrCoO 4 > LaSrNiO4 > LaSrCuO4 > LaSrFeO 4 > LaSrMnO4. This is explained in terms of oxygen vacancies and mobile lattice oxygen, particle size and BET surface area.