FeCeOx with improved activity for catalytic reduction of NO with NH3

An FeCeO x solid solution with an Fe/Ce molar ratio of 1 was obtained via a modified sol-gel method. The promotional effect of Fe 3+ ions in the lattice of cubic CeO 2 for catalytic reduction of NO with NH 3 was studied. The NO conversion over the FeCeO x catalyst was obviously higher than those over CeO 2 and Fe 2 O 3 catalysts. FeCeO x was characterized by using XRD , TEM, and XANES , etc. The experimental results revealed that Fe substituted Ce in CeO 2 to form an Fe–O–Ce solid solution with high activity for catalytic reduction of NO. The atomic and electric structures of the FeCeO x catalyst were studied to explain the enhanced catalytic activity.