Oxygen Adsorption and Carbon Monoxide Oxidation over Perovskite Oxides

Abstract

The adsorption of oxygen and the oxidation of carbon monoxide over LaMetal (Co, Ni, Fe, Mn, Ti) perovskite oxides were investigated by the pulse adsorption and flow method. The amounts of O₂ adsorption strongly correlate with the binding energy of transition metal coordinating with oxygen of the perovskite structure. The relation was discussed between the electronic configuration of transition metal ion of perovskite oxides and the catalytic activity in connection with CO oxidation mechanisms.