Ti and Si doping as a way to increase low temperature activity of sulfated Ag/Al2O3 in H2-assisted NH3-SCR of NOx

- Doping of Ag/Al2O3 by Ti and Si decreases temperature of 50% NOx conversion.
- Doping of Ag/Al2O3 by Ti and Si causes faster deactivation in the presence of SO2.
- The activation effect can be due to higher Ag dispersion in the doped catalysts.
- Faster sulfur poisoning and easier regeneration can be due to changed SOx adsorption behavior.