Unlocking the Potential of Metal-Doping Fe₂O₃/Rice Husk Ash Catalysts for Low-Temperature CO-SCR Enhancement.

ABSTRACT: Transition metal oxides are efficient bifunctional catalysts for the selective catalytic reduction (SCR) of nitrogen oxides (NO_x) using CO. Nonetheless, their poor activity at lower temperatures constrains broader industrial application. Herein, we propose an optimized Fe₂O₃-based catalyst through strategic metal doping with Cu, Co, or Ce, which engenders a harmonious balance for the synergistic removal of CO and NO_x. Among the developed catalysts, Co-doped Fe₂O₃, supported by rice husk ash, demonstrates superior low-temperature CO-SCR activity, achieving CO and NO_x conversion ratios and N₂ selectivity above 98.5% at 100-500 °C. The enhanced catalytic performance is attributed to th

SUBMITTER: Pan Y 

PROVIDER: S-EPMC11007803 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature