Substantially enhanced anti-lead poisoning performance on the CeO2-WO3 pairs supported by red mud: Sacrificial effect of Fe2O3

Poisoning Mechanism Study of Metal Ions on a Three-Dimensional Ordered Macroporous Structure Ce0.2Mn0.2/3DOM-TiO2 Catalyst for Low-Temperature SCR of NO with NH3

“…To achieve the practical implementation of NH 3 –SCR technology in industry, it is imperative to enhance both the denitrification performance of catalysts and their resistance and stability, considering the intricate composition of flue gas under real-life manufacturing conditions. Metal ions, including Cd, Pb, − Zn, , As, − and Hg, are usually present in industrial flue gas in either elemental or compound form. In the process of flue gas denitrification, metal ions through physical blocking or chemical reactions with catalysts result in catalyst poisoning and deactivation, which seriously affect the activity of catalysts. ,, The research status indicates that the antimetal ion ability of NH 3 –SCR catalysts can be improved via changing the chemical composition of the catalyst or adding auxiliary materials. , However, these research results still fall short of the target, susceptible to suffering from a low NO conversion rate at low temperatures and serious deactivation by multiple poisons.…”