Novel Fe–Ce–Ti catalyst with remarkable performance for the selective catalytic reduction of NO x by NH ₃

The redox cycle (Ce ⁴⁺ + Fe ²⁺ ↔ Ce ³⁺ + Fe ³⁺ ) over the Fe–Ce–Ti catalyst contributes to the activation of NO x and NH ₃ and thus the formation of reaction intermediates, leading to the high catalytic performance for the NH ₃ -SCR of NO x .