Ce1‐xMnxVO4 with Improved Activity for Low‐Temperature Catalytic Reduction of NO with NH3

Abstract Novel Ce 1‐x Mn x VO 4 catalysts prepared via modified hydrothermal synthesis were used in selective catalytic reduction of NO using NH 3 (NH 3 ‐SCR). The Ce 1‐x Mn x VO 4 catalysts displayed optimum NO removal efficiency at 250 °C. Physicochemical properties including crystal type, morphology, particle size, elemental composition, BET surface area, chemical bond, and valence state were studied by XRD, TEM, EDS, N 2 adsorption‐desorption, Raman spectroscopy, and XPS. Specific properties such as reduction property and acid sites were studied by H 2 ‐TPR and NH 3 ‐TPD. The in‐situ DRIFTS results revealed that NH 3 ‐SCR over Ce 0.5 Mn 0.5 VO 4 follows the Eley‐Rideal mechanism. The experimental results showed that doped manganese replaces the Ce position in CeVO 4 . The Mn−O−Ce interaction may increase the contents of oxygen defects and Brønsted acid sites, thus leading to enhanced activity.