EFFECT OF STRUCTURAL DISORDER ON THE CATALYTIC ACTIVITY OF MIXED LA-SR-CO-FE-O PEROVSKITES

Authors
ISUPOVA LA SADYKOV VA TSYBULYA SV KRYUKOVA GN IVANOV VP PETROV AN KONONCHUK OF
Citation
La. Isupova et al., EFFECT OF STRUCTURAL DISORDER ON THE CATALYTIC ACTIVITY OF MIXED LA-SR-CO-FE-O PEROVSKITES, Reaction kinetics and catalysis letters, 62(1), 1997, pp. 129-135
Citations number
9
Categorie Soggetti
Chemistry Physical
Journal title
Reaction kinetics and catalysis letters → ACNP
ISSN journal
01331736
Volume
62
Issue
1
Year of publication
1997
Pages
129 - 135
Database
ISI
SICI code
0133-1736(1997)62:1<129:EOSDOT>2.0.ZU;2-#
Abstract
For a perovskite system La0.7Sr0.3Co1-xFexO3, the effect of partial su bstitution of Co by Fe on the particle microstructure and chemical com position of the surface layer has been studied. Iron incorporation was found to cause a structure rearrangement from the hexagonal (at x < 0 .05) to the cubic (at x>0.05) type, which was not accompanied by any a ppreciable variation of the surface layer composition. A transient sam ple with x= 0.05 was characterized by a high degree of misorientation of microblocks and had the highest activity in the CO catalytic oxidat ion.