Abstract
Commercial selective catalytic reduction (SCR) processes for the reduction of NO to N 2 by NH 3 require temperatures above 300°C. Significant SCR activities have been measured for transition metal sulfates as the catalysts, at temperatures as low as 30°C. Under commercial SCR throughput and gas composition conditions, a 10% NiSO 4 /Al 2 O 3 catalyst exhibited NO x conversion of over 50% in the temperature range 50-120°C and another activity peak at 200-250°C with nearly 80% NO x conversion. The low-temperature SCR activity was attributed to the Bronsted acidity of the surface. The Bronsted acidity, and hence the SCR activity, decreased upon the adsorption of water and increased with the presence of SO 2 in the gas phase
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
