Exchange reactions of oxides. Part X. The rare-earth sesquioxides
- 1 January 1969
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 1832-1835
- https://doi.org/10.1039/j19690001832
Abstract
The kinetics of exchange of oxygen-18 between enriched oxygen gas and the stable rare-earth sesquioxides, and of terbium oxide, have been examined. Most of the oxides exchange by a dissociative mechanism confined to the surface layer of oxygen ions. As for other metallic oxides there is a strong compensation effect between A0 and E in the rate expression and there is as before a correlation between the size of the unit cell and related crystal parameters and E. There is no correlation between magnetic properties of the M3+ ion and the exchange kinetics.Keywords
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