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dc.creatorPetrović, Srđan
dc.creatorKaranović, Ljiljana
dc.creatorStefanov, Plamen K.
dc.creatorZdujić, Miodrag
dc.creatorTerlecki Baričević, Ana
dc.date.accessioned2019-02-03T16:49:30Z
dc.date.available2019-02-03T16:49:30Z
dc.date.issued2005
dc.identifier.issn0926-3373
dc.identifier.urihttp://dais.sanu.ac.rs/123456789/4838
dc.description.abstractThe mixed perovskite type oxides with nominal formula LaTi0.5Mg0.5-xPdxO3, (0 LT = x LT = 0.10) were prepared by anneling the ethanol solution of precursor in nitrogen flow at 1200 degrees C. X-ray powder diffraction (XRPD) analysis shows that the orthorhombic perovskite structure was found in all investigated samples. However, at least a part of palladium is not incorporated into perovskite structure and remains as separate phase, which is reduced to Pd-0 at 1200 degrees C. X-ray photoelectron spectroscopy (XPS) reveled the presence of Pd2+, which indicate a reoxidation of Pd-0 in the surface layers during cooling. The Pd content in the samples has a small influence on the methane oxidation activity below the temperature of 500 degrees C. At temperatures higher than 500 C, the methane oxidation activity of the sample with x = 0.05 exceeds the activity of the sample with x = 0.10. The sharp increase of methane oxidation activity over the sample with lower content of palladium at about 500 degrees C was ascribed to the higher dispersion of PdO and Pd-0 phases. Thus, the higher contribution of lattice oxygen and possible local change in oxidation state of palladium can be a reason for the enhanced activity. Contrary to the supported Pd/Al2O3 catalyst, the incorporation of palladium into perovskite matrix and interaction of PdO-Pd-0 benefits the activity of smaller particles at higher reaction temperatures.en
dc.publisherElsevier Science Bv, Amsterdam
dc.rightsrestrictedAccess
dc.sourceApplied Catalysis B: Environmental
dc.subjectXPSen
dc.subjectperovskiteen
dc.subjectcatalytic combustionen
dc.titleCatalytic combustion of methane over Pd containing perovskite type oxidesen
dc.typearticle
dc.rights.licenseARR
dcterms.abstractПетровић, Срђан; Карановић, Љиљана; Здујић, Миодраг; Стефанов, Пламен К.; Терлецки Баричевић, Aна;
dc.citation.spage133
dc.citation.epage141
dc.citation.volume58
dc.citation.issue1-2
dc.identifier.wos000229514800016
dc.identifier.doi10.1016/j.apcatb.2004.11.020
dc.identifier.scopus2-s2.0-18544382870
dc.type.versionpublishedVersion
dc.citation.other58(1-2): 133-141


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