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The Oxygen Mobility and Catalytic Activity of LaMO3±δ (M=Cr, Mn, Co) Phases

Published online by Cambridge University Press:  10 February 2011

I.A. Koudriashov ,
L.V. Borovskikh ,
G.N. Mazo ,
S. Scheurell  and
E. Kemnitz
I.A. Koudriashov
Affiliation:
Moscow State University, Chemistry Department, Moscow, Russia
L.V. Borovskikh
Affiliation:
Moscow State University, Chemistry Department, Moscow, Russia
G.N. Mazo
Affiliation:
Moscow State University, Chemistry Department, Moscow, Russia
S. Scheurell
Affiliation:
Humboldt University, Institute of Inorganic Chemistry, Berlin, Germany
E. Kemnitz
Affiliation:
Humboldt University, Institute of Inorganic Chemistry, Berlin, Germany
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Abstract

The activity of LaMO3, where M=Cr, Mn, Co, perovskite-type complex oxides in oxygen diffusion and catalytic processes was investigated. For sample preparation freeze-drying technique was used and dynamic thermal isotope exchange method was used to study exchange reaction between 18O from the gas phase and 16O from the samples synthesized, and to investigate the methane catalytic oxidation reaction. The results obtained allowed to indicate temperature intervals of different types of reaction taking place and that LaCrO3 is far less active in mentioned reactions than LaCoO3 and LaMnO3.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 602: Symposium JJ – Magnetoresistive Oxides & Related Materials , 1999 , 377
Copyright
Copyright © Materials Research Society 2000

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