Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10632161 | Materials Research Bulletin | 2005 | 7 Pages |
Abstract
Three oxygen content determination methods (iodometric titration, gas volumetric analysis and thermogravimetric hydrogen reduction) have been evaluated for the case of rare earth cobaltates LnBCo2O5+δ (were Ln-rare earth, B-alkali earth elements). All the methods are based on oxidation properties of both Co4+ and Co3+ cations but different instrumentation was used for each of the method. We have obtained good agreement within ±0.02 in δ for both the iodometric titration and the gas volumetric analysis, whereas the thermogravimetric hydrogen reduction was found to be less credible.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
K. Conder, E. Pomjakushina, A. Soldatov, E. Mitberg,