High NH 3 -SCR reaction rate with low dependence on O 2 partial pressure over Al-rich Cu-*BEA zeolite.

Dependence of NH 3 -SCR reaction rate on O 2 partial pressure was investigated at 473 K over Cu ion-exchanged MOR, MFI, CHA and *BEA zeolites with varying "Cu density in micropores". Among the zeolites, Cu-*BEA zeolite demonstrated promising potential as an effective catalyst for NH 3 -SCR over a wide range of O 2 partial pressure.