SO 2 Resisting Pd‐doped Pr 1‐x Ce x MnO 3 Perovskites for Efficient Denitration at Low Temperature

H 2 ‐SCR is served as the promising technology for the controlling of NO x emission, and the Pd‐based derivative catalyst exhibited high NO x reduction performance. Effectively regulating the electronic configuration of the active component is favorable to the rational optimization of noble Pd. In this work, a series of Pr 1‐x Ce x Mn 1‐y Pd y O 3 @Ni were successfully synthesized and exhibited superior NO conversion efficiency at low temperatures. 92.7 % conversion efficiency was achieved at 200 °C over Pr 0.9 Ce 0.1 Mn 0.9 Pd 0.1 O 3 @Ni in the presence of 4 % O 2 with a GHSV of 32000 h −1 . Meanwhile, the outstanding performance was obtained in the resistance to SO 2 (200 ppm) and H 2 O (8 %). Deduced from the results of XRD, Raman, XPS, and H 2 ‐TPR, the modification of d orbit states in palladium was confirmed originating from the incorporation in the B site of Pr 0.9 Ce 0.1 Mn 0.9 Pd 0.1 O 3 . The existence of higher valence (Pd 3+ and Pd 4+ ) than the bivalence in Pr 0.9 Ce 0.1 Mn 0.9 Pd 0.1 O 3 catalyst was evidenced by XPS analysis. Our research provides a new sight into the H 2 ‐SCR through the higher utilization of Pd.