The Absence of Oxygen in Sulfation Promotes the Performance of the Sulfated CeO2 Catalyst for Low-Temperature Selective Catalytic Reduction of NOx by NH3: Redox Property versus Acidity

Tuning surface acidity with SO2 sulfation is well established to enhance the catalytic performance of CeO2 for selective catalytic reduction of NOx by NH3 (NH3-SCR). However, the role of oxygen, wh...