Search results for "LSCF perovskyte EXAFS XRD TPR"

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Palladium local structure of La1-xSrxCo1-yFey-0.03Pd0.03O3-δperovskites synthesized using a one pot citrate method

2014

Nanostructured La1-xSrxCo1-yFey-0.03Pd0.03O3-δ(LSCF-Pd) perovskites with fixed La-Sr composition (x = 0.4) and two different Fe contents (y = 0.2 and 0.8) were successfully synthesized using a one pot citrate method starting from nitrates of the metal cations. Pd-free La1-xSrxCo1-yFeyO3-δ(LSCF) systems were prepared for comparison. LSCF powders were calcined at 1300 °C and characterized by XRD and Rietveld refinement, EXAFS, XPS, TPR analyses. Promotion of La0.6Sr0.4Co0.8Fe0.2O3-δand of La0.6Sr0.4Co0.2Fe0.8O3-δby incorporation of palladium was evidenced by solving the local environment of Pd using EXAFS spectroscopy. XPS analyses, in agreement with TPR measurements, demonstrated an inc…

Physics and Astronomy (all); Physical and Theoretical ChemistryLSCF perovskyte EXAFS XRD TPRMaterials scienceExtended X-ray absorption fine structureRietveld refinementInorganic chemistryGeneral Physics and Astronomychemistry.chemical_elementIonic bondinglaw.inventionMetalPhysics and Astronomy (all)X-ray photoelectron spectroscopychemistrylawvisual_artvisual_art.visual_art_mediumCalcinationPhysical and Theoretical ChemistryPalladiumPerovskite (structure)
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