Oxygen equilibrium and kinetics in PrBaCo2O5+δ

被引：3
|
作者：
Frontera, C.
Caneiro, A.
Carrillo, A. E.
Oro-Sole, J.
Garcia-Munoz, J. L.
机构：
[1] CSIC, Inst Ciencia Mat Barcelona, E-08193 Barcelona, Spain
[2] Ctr Atom Bariloche, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina
来源：
BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO | 2006年 / 45卷 / 03期
关键词：
cobalt oxides; termogravimetry andlisis; oxygen content determination; oxygen diffusion;
D O I：
10.3989/cyv.2006.v45.i3.293
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
By means of in-situ thermo-gravimetry analysis (TGA) we have studied the dependence on temperature of the equilibrium oxygen content (8) in PrBaCo2O5+delta cobaltite under different atmospheres or oxygen partial pressure. We have also characterized the kinetics of 8 changes at different temperatures. The equilibrium studies have permitted us to prepare samples with the desired values of 8, a crucial step to correctly characterize the interesting family of layered "112" cobalt oxides. Kinetic studies reveal that oxygen diffusion and surface reactivity starts at low temperatures (200 degrees C) in these compounds.
引用
收藏
页码：139 / 143
页数：5
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