Carbon oxidation characteristics of yttrium manganate catalyst prepared via urea decomposition

YMnO3 is a hexagonal crystal characterized by high carbon oxidation activity. In this study, carbon black powder has been directly oxidized at temperatures as low as 250 °C with the active oxygen species generated by YMnO3 catalyst. The activation energies measured for the non-catalyzed and YMnO3-catalyzed carbon oxidation reactions were 160 kJ mol−1 and 131 kJ mol−1, respectively. During combustion testing of particulate matter in a ceramic form coated with YMnO3, the captured soot was continuously purified at a temperature of 350 °C.