In this paper, a series of La0.7Sr0.3Co1-xFexO3 (x=0, 0.2, 0.6, and 1.0) catalysts was synthesized by a sol-gel method with calcination at 700°C in static air. The effect of the Fe doping on the structure, the performance of the NOx storage, sulfur tolerance and regeneration of the perovskite catalysts was investigated. Our results showed that the partial substitution of Co with Fe improved the depersion of the SrCO3 phase, and that the perovskite phase became the only species detected from the X-ray diffraction (XRD) patterns. The NOx storage capacity (NSC) of the catalysts dropped following an increase in the proportion of Fe doping. The deposition of sulfate on the surface and the partial structural damage of the [Article]
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