Three vanadium-based catalysts were used to remove high concentrations of nitrogen oxides, and the catalysts’ performance de-NOx anti-H2O under NOx investigated. The V-Mo-W/TiO2 tested 1500 mL/min gas flow (GHSV = 500 h−1, 2.4% NO2, 4.78% NH3, 13% O2, 4% H2O, 5% CO2) characterized by BET, SEM, EDS, XRD, XPS, H2-TPR, NH3-TPD; then, their physical chemical properties analyzed. results showed that...