Catalytic preferential oxidation of carbon monoxide over platinum supported on lanthanum ferrite-ceria catalysts for cleaning of hydrogen

► Chitosan complex method resulted in LaFeO3 with pure phase, crystalline, open porous morphology and higher surface area. ► Higher CO conversion in the range of 99% and selectivity for CO conversion in the range of 93-96%. ► Minimization of CO concentration in hydrogen to the extent of 30 ppm by PROX-CO reaction. ► Synergistic effect observed for PROX-CO activity using LaFeO3 and CeO2 as support for Pt catalyst.