Carbon oxidation activity of complex oxides (Part 1)—RE₂CuO₄ (RE = La–Gd) and RE₂Cu₂O₅ (RE = Dy–Yb, Y)—

Abstract

Effect of rare earths (RE) in the rare earth copper oxides, RE₂CuO₄ (RE = La, Pr, Nd, Sm, Gd) and RE₂Cu₂O₅ (RE = Dy, Ho, Er, Yb, Y), on the carbon oxidation was investigated by the DSC (differential scanning calorimetry) measurement. Orthorhombic La₂CuO₄ and tetragonal RE₂CuO₄ (RE = Pr–Sm) prepared at 800°C showed higher carbon oxidation activity compared with CuO processed at the same temperature, whereas activity of the orthorhombic RE₂Cu₂O₅ (RE = Dy–Yb, Y) prepared at 1000°C was lower than that of CuO processed at the same temperature.