Effects of Pd on enhancement of oxidation activity of LaBO3 (BÂ =Â Mn, Fe, Co and Ni) pervoskite catalysts for pollution abatement from natural gas fueled vehicles

▶ Pd facilitates reducibility of M in LaMPd0.05O3 (M = Mn, Fe, Co and Ni) pervoskites. ▶ Pd effect is more pronounced for CO oxidation as compared to that for CH4. ▶ LaFePd0.05O3 catalyst shows the highest activity for CO and CH4 oxidation. ▶ Pd addition to LaFeO3 lowers T90 of CO and CH4 by 175 and 52 °C respectively.