Surface properties and catalytic performance of La1−xSrxFeO3 perovskite-type oxides for methane combustion

Effect of the calcium on the textural, structural and catalytic properties of La1–x Ca x Co1–y Fe y O3 perovskites

“…In literature, other cations different from Ca, commonly Sr and Ce, at A¢-site in La 1-x A¢ x Co O 3 [7][8][9], La 1-x A¢ x MnO 3 [1,7,10] and La 1-x A¢ x FeO 3 [11,12] perovskites have been used to enhance the catalytic combustion reaction of several volatile organic compounds. In a previous work [13], with the aim of improving the catalytic performance in propane combustion, LaCoO 3 perovskite was synthesized by the citrate method and the cation at A-site was partially replaced by Ca 2+ , resulting in La 1-x Ca x CoO 3 oxides.…”

Introduction and Structure of the Thesis

“…Without a doubt, most of the literatures, dealing with CH 4 combustion (as we explain in more detail in the following chapters), concern the use of nonstoichiometric oxides. Generally, one type of nonstoichiometric oxides has been fascinating notice as active structures for cyclic conversion of CH 4 combustion, perovskite mixed oxide [6][7][8][9][10]. A short review of the preview results obtained with this type of structures is given in following sections.…”

Self-propagating high-temperature synthesis with post-heat treatment of La1−xSrxFeO3 (x=0–1) perovskite as catalyst for soot combustion

“…In particular, the activity of LaFeO 3 is comparable to that of Pt/Al 2 O 3 , when it is used as an oxidation catalyst [3]. Furthermore, the catalytic activity of LaFeO 3 changes drastically with Sr doping [4,5]. However, perovskite-type oxides are commonly synthesized by timeand energy-consuming wet chemical synthesis such as the citrate method, in which the starting mixture must be heated at a high temperature for a long time during calcination and sintering [6,7].…”