شماره ركورد كنفرانس :
5048
عنوان مقاله :
Effect of Manganese Oxide Addition on Structural and Redox Property of LaCoO3 Perovskite
Author/Authors :
S ،Farhanian Moghadam School of Chemistry - Damghan University of Basic Sciences (DUBS), Damghan, Iran , Azim ،Malekzadeh School of Chemistry - Damghan University of Basic Sciences (DUBS), Damghan, Iran , Abasali ،Khodadadi School of Chemical Engineering - University of Tehran, Tehran, Iran , Yadollah ،Mortazavi School of Chemical Engineering - University of Tehran, Tehran, Iran
كليدواژه :
Mixed oxides , Perovskite , LaCoO3 , manganese oxide , XRD
عنوان كنفرانس :
ششمين كنگره بين المللي مهندسي شيمي
چكيده لاتين :
Samples with the formula of LaCoMnxO(3+δ), where x is 0.0, 0.3 or 0.5 were prepared and compared according to the
structural properties to study the effect of the manganese oxide addition on LaCoO3 perovskite structure. Samples were
prepared by the citrate method and calcined at 600oC for 8 h. Perovskite structure is observed in XRD patterns of
studied catalysts. Disappearance of manganese oxide phase in XRD proposes to consider the catalyst as LaCoO3
perovskite supported manganese oxide. Manganese oxide disappearance can account for small size of the species.
Results are evidence for a further affinity of La3+ toward the Co3+ than of the Mn cation. Manganese oxide, however,
was observed to deteriorate the crystallization.
