Novel sulfation effect on low-temperature activity enhancement of CeO2-added Sb-V2O5/TiO2 catalyst for NH3-SCR

- Sulfation of Sb-V2O5-CeO2/TiO2 catalyst formed cerium sulfates preferentially.
- Sulfation at 500 °C could improve its acidity at the expense of NO adsorption.
- S500 catalyst produced Ce2(SO4)3 which is more active and favorable for NH3-SCR.
- Sulfation at high temperature increased chemisorbed oxygen and reducible species.