Low-temperature catalytic reduction of NO by NH3 over vanadia-based nanoparticles prepared by flame-assisted spray pyrolysis: Influence of various supports

- Formation of surface V2O3 species is improved enormously by the addition of Al2O3.
- The Al2O3, TiO2-Al2O3, and CeO2-Al2O3 established promotional effect.
- Direct correlation between surface concentration of V4+/V5+ and SCR activity.
- Formation of ZrV2O7 solid solution due to zirconia migration into V2O5 crystallites.
- V/Ti-Al, V/Al, V/Ce-Al catalysts show the broadening of the temperature window.