Influence of Pd on FeAlPO-5 zeolite in the catalytic reduction of N2O with methane

Pd/FeAlPO-5 zeolites with different Pd loading were prepared and characterized by N2 physisorption, XRD and H2-TPR. The results indicate that Pd addition has little influence on the textural structure of FeAlPO-5 zeolites. The TPR profiles of zeolites show the peak temperatures related with the reduction of Fe(III) and subsurface Pd species decrease with the increase of Pd content, suggesting the existence of interactions between Fe and Pd. The Pd/FeAlPO-5 catalysts were tested in the catalytic reduction of N2O with methane and show a better low-temperature activity in comparison with FeAlPO-5. The improved activity of Pd/FeAlPO-5 can be ascribed to the synergic effect between noble metal and iron species.