Ca-Poisoning Effect on V2O5-WO3/TiO2 and V2O5-WO3-CeO2/TiO2 Catalysts with Different Vanadium Loading

Ca poisoning behavior is inevitable for high-calcium content flue gas, so V2O5-WO3/TiO2 (VWT) and V2O5-WO3-CeO2/TiO2 (VWCeT) catalysts with different vanadium have been prepared the Ca-doped are compared in this manuscript. The result shows Ce addition can both promote NO conversion alkali resistance. Lower 0.1VWCeT catalyst promotes its oxidability modification more suitable low catalysts. total acidity reducibility of decline after doping, active species on has strengthened by addition. CeO2 based lower loading struggle to resist sulfur poisoning, while higher favors SO2 adsorption also physically reduces cerium acidification process. In presence SO2, additional Brønsted acid sites formed rich catalyst. dynamic NH3 investigated, that doping critical SCR reaction, susceptible initially gas during actual application, but resistance may increase alkali-poisoning effect aggravated doping.