A CeO2-MnO core-shell catalyst for low-temperature NH3-SCR of NO

A CeO2-MnOx catalyst with a core-shell structure was prepared by a chemical deposition method and tested towards the low-temperature selective catalytic reduction of NO by NH3. The catalyst with a molar ratio of CeO2/MnOx = 0.6, exhibited a relatively high conversion values of NO in the 110–220 °C range and good resistance to SO2 and H2O at the space velocity of 40,000 h− 1. The excellent catalytic performance could be attributed to the presence of high crystalline α-MnO2, as well as high concentrations of Mn4 + and Ce3 +. Notably, CeO2-MnOx catalyst showed relatively good resistance to SO2 due to its core-shell structure.