Selective catalytic reduction of nitric oxide with ammonia over zirconium-doped copper/ZSM-5 catalysts.

Highlights: [•] Zirconia introduction favors copper dispersion and inhibits copper crystallization. [•] Zirconia addition is beneficial to enriching copper species on the ZSM-5 surface. [•] The interaction between copper and zirconium enhances the lattice oxygen and site reducibility. [•] The Cu-Zr/ZSM-5 presents a wide activity window within the range of diesel exhaust temperatures. [ABSTRACT FROM AUTHOR]