New insights into the promotional effects of Cu and Fe over V2O5-WO3/TiO2 NH3-SCR catalysts towards oxidation of Hg0

Reaction conditions: (a) 70.0 μg/m3 Hg0, 3% O2, 75,000 h− 1; (b) 300 ppm NO, NH3/NO: 1/1, 3% O2, 500 ppm SO2, 8% H2O, 150,000 h− 1.182