Effect of Fe/Ce Molar Ratio on Catalytic Performance of Fe–Ce/Ite for NH3-SCR De–NOx

Fe–Ce/Ite catalysts were synthesized with varying Fe/Ce molar ratios and utilized for the NH3-SCR process. Fe–Ce/Ite-2 can yield better low-temperature activity than the Fe–Ce/Ite-1 and around 90% denitration efficiency can be obtained at 270 ℃. The characterization findings show that Fe and Ce species both present in an amorphous state over the Fe–Ce/Ite-2 and Fe–Ce/Ite-1. The Fe–Ce/Ite-2 owns more active species and surface adsorbed oxygen. Besides these, the elevated acidity and low-temperature redox capacity are responsible for the high activity of Fe–Ce/Ite-2, while the specific surface area has no significant influence on it.