Performance of V2O5/NPTiO2-Al2O3-nanoparticle- and V2O5/NTiO2-Al2O3-nanotube model catalysts in the SCR-NO with NH3

In this study, the NO reduction by NH3 over V2O5/NPTiO2-Al2O3 (nanoparticles) and V2O5/NTiO2-Al2O3 (nanotubes) catalysts synthesized by the sol-gel method with 10 and 5 wt.% of Al2O3 and V2O5, respectively, is reported. The V2O5/NPTiO2-Al2O3 and V2O5/NTiO2-Al2O3 catalysts showed remarkable conversion, high acidity, structure stability, N-2 selectivity and a high resistance to deactivation in the presence of 10 vol.% of H2O within the 200 to 500 degrees C temperature interval. The nanostructured catalysts developed in this work are an excellent alternative to improve the SCR-NH3 process, both expanding its operation window and preventing deactivation by H2O at high temperatures. (C) 2014 Elsevier B.V. All rights reserved.