A comparative study of the catalytic oxidation of HCHO and CO over Mn0.75Co2.25O4 catalyst: The effect of moisture

- Totally opposite effects of RH on CO and HCHO oxidation were observed.
- Water (RH = 0-90%) enhanced both activity and stability for HCHO oxidation.
- Water (RH = 0-90%) deactivated CO oxidation but prolonged the catalyst lifetime.