B-Site modification of LaMn0.9Co0.1O3 perovskite using a selective dissolution method in C3H6 oxidation

Abstract

A Co-doped MnO₂ catalyst with a trace amount of Co was synthesized by a selective dissolution method using LaMn_0.9Co_0.1O₃ as a perovskite precursor. The obtained catalyst exhibited much higher catalytic activity than pure LaMn_0.9Co_0.1O₃ and MnO₂ with excellent selectivity to CO₂ and resistance to H₂O in the range of 90–350 °C. Its superior performance was induced by the surface reducibility, surface-active oxygen, and the synergistic effect between the trace amount of Co and MnO₂.