ZrO2-modified Al2O3-supported PdCu catalysts for the water denitrification reaction

- ZrO2 can be homogeneously deposited on Al2O3 due to a suitable preparation method.
- The tetragonal phase of ZrO2 favors the NO3− ion adsorption.
- Z and ZA supported Pd catalysts were active in the reduction of NO3−.
- Z and A supported PdCu catalysts were neither active nor selective toward N2.
- ZA supported PdCu catalysts achieved high NO3− conversion without generation of NO2−.