Prasad, D. Hari Park, S. Y. Oh, E-O Ji, H. Kim, H-R. Yoon, K-J. Son, J-W. Lee, J-H. 2024-01-20T13:30:48Z 2024-01-20T13:30:48Z 2021-09-05 2012-12-07 0926-860X https://pubs.kist.re.kr/handle/201004/128555 In the present study, La1-xSrxCoO3-delta(x = 0.2, 03, 0.4, 0.5) perovskite nano-particles have been successfully prepared by EDTA-citrate complexing process and the catalytic performance was examined for the soot oxidation activity. The physio-chemical properties of these materials were characterized by means of X-ray diffraction (XRD), thermogravimetry-differential thermal (TG-DTA) analysis, BET surface area and X-ray photoelectron spectroscopy (XPS) analysis, scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) analysis. TG-DTA analysis suggested that, in the temperature range of 350-500 degrees C, the pyrolysis of metal/nitrate/citrate/EDTA complexes takes place and the single phase La1-xSrxCoO3-delta perovskite oxides can be formed at 900 degrees C and the phase formation has been confirmed by XRD analysis. The surface composition of the samples derived from XPS analysis indicated an impoverishment of lanthanum content at the surface with the increase of strontium content. For La0.6Sr0.4CoO3-delta sample, Sr-enriched perovskite surface has been observed along with the more number of surface oxides (M(Sr, La, Co)-O) resulting in higher catalytic activity for soot oxidation than the others. (C) 2012 Elsevier B.V. All rights reserved. English ELSEVIER SURFACE CHARACTERIZATION SOLID-SOLUTIONS CEO2 CATALYSTS FUEL-CELLS TEMPERATURE OXYGEN BEHAVIOR CATHODE LACOO3 COPRECIPITATION Synthesis of nano-crystalline La1-xSrxCoO3-delta perovskite oxides by EDTA-citrate complexing process and its catalytic activity for soot oxidation Article 10.1016/j.apcata.2012.09.008 1 APPLIED CATALYSIS A-GENERAL, v.447, pp.100 - 106 APPLIED CATALYSIS A-GENERAL 447 100 106 scie scopus 000313224400013 2-s2.0-84870428342 Chemistry, Physical Environmental Sciences Chemistry Environmental Sciences & Ecology Article SURFACE CHARACTERIZATION SOLID-SOLUTIONS CEO2 CATALYSTS FUEL-CELLS TEMPERATURE OXYGEN BEHAVIOR CATHODE LACOO3 COPRECIPITATION La1-xSrxCoO3-delta perovskite oxides EDTA-citrate complexing process Soot oxidation