شماره ركورد كنفرانس :
5048
عنوان مقاله :
Effects of Ceria addition on the structural properties of LaCoO3 perovskite
Author/Authors :
F ،Karimi 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 , CeO2 , XRD , Ceria
عنوان كنفرانس :
ششمين كنگره بين المللي مهندسي شيمي
چكيده لاتين :
Samples with the formula of LaCoCexO(3+δ), where x is 0.0 or 0.3 were prepared and compared according to the
structural properties to study the effect of the ceria addition on LaCoO3 perovskite. Samples were prepared by the
citrate method and calcined at 600oC for 8 h, followed by the calcination at 700oC for 5 h. Perovskite structure is
observed in XRD patterns of studied catalysts. Results show that the ceria is not appeared in the perovskite structure. To
this end the catalyst can be considered as LaCoO3 perovskite supported ceria. Results are evidence for a further affinity
of La3+ toward the Co3+ than of the Ce4+. Ceria, however, was observed to deteriorate the crystallization.
