Abstract
In this study, La1−xSrxFeO3 perovskites with x = 0, 0.25, 0.50, 0.75 and 1.0 have been synthesized via a sol gel auto-combustion method using glycine as fuel. All materials were characterized with x-ray powder diffraction (XRD), N2 porosimetry, scanning electron microscopy (SEM) and O2 Temperature programmed adsorption- desorption (O2/TPA-D). The catalytic activity of perovskites was tested for the decomposition of N2O to N2 and O2 as a probe reaction in a bench scale plug flow reactor. The most active catalyst was La0.75Sr0.25FeO3 and the catalytic activity is strongly correlated to the amount of the reverse oxygen uptake from the perovskite structure. According to the N2O decomposition mechanism the slow and rate determining step was found to be the dissociation of N2O adsorbed on the surface of catalyst as $${\text{N}}_{ 2} {\text{O}}^{ - }_{{({\text{ads}})}}$$ .
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