Enhanced low-temperature NH3-SCR activity of a V2O5/TiO2 composite prepared via chemical vapor condensation and impregnation method

Abstract A novel V 2 O 5 /TiO 2 composite material was synthesized by chemical vapor condensation (CVC) method. It exhibited nearly 100% NH 3 -SCR activity at 250 °C. Characterization results show that the V 2 O 5 /TiO 2 material prepared by CVC had a higher specific surface area compared to that of V 2 O 5 supported on TiO 2 (P25) and its commercially available equivalent material. In particular, V 2 O 5 /TiO 2 material prepared by CVC had well-balanced V 4+ /V 5+ ratio, resulting in high deNO x performance.