KNO 3 supported on three-dimensionally ordered macroporous La 0.8 Ce 0.2 Mn 1−x Fe x O 3 for soot removal

The KNO 3 supported on 3DOM La 0.8 Ce 0.2 Mn 1−x Fe x O 3 perovskites have been prepared and used for soot removal. The presence of potassium nitrate can accelerate the soot combustion at both low and high temperature. The catalysts exhibit high activities for soot combustion.