Novel V2O5/NTiO2–Al2O3 nanostructured catalysts for enhanced catalytic activity in NO reduction by NH3

• TiO2–Al2O3 nanocrystals were obtained by the sol–gel method.
• TiO2–Al2O3 nanocrystal was transformed into nanotubes.
• V2O5/NTiO2–Al2O3 catalysts showed thermal stability up to 480 °C.
• V2O5/NTiO2–Al2O3 catalysts showed remarkable acidity up to 400 °C.
• V2O5/NTiO2–Al2O3 catalysts could be a powerful tool against NOx pollution.

Nanostructured V2O5/NTiO2–Al2O3 catalysts were prepared by the sol–gel and hydrothermal methods and characterized by XRD, TEM, N2-BET and XPS. The role played by TiO2–Al2O3 as nanostructured support of V2O5 for NO–SCR–NH3 at high temperature was studied. The results show that the V2O5/NTiO2–Al2O3catalyst containing 5 wt.% of Al2O3 and 5 wt.% of V2O5 featured the highest activity in the 200–500 °C temperature interval without NH3 oxidation to NO2.

A new V2O5/N/TiO2–Al2O3 nanostructured catalyst with tubular structure prepared for the selective catalytic reduction of NO by NH3 showed activity improvement at high temperature without NH3 oxidation to NO2.Figure optionsDownload as PowerPoint slide