Role of different coordinated Cu and reactive oxygen species on the highly active Cu–Ce–Zr mixed oxides in NH 3 -SCO: a combined in situ EPR and O 2 -TPD approach

Novel Cu–Ce–Zr mixed oxides were synthesized by a citric acid sol–gel method, and they exhibited an excellent NH 3 -SCO activity (180 °C, TOF = 1.33 h −1 ).