2013
DOI: 10.1179/1743281213y.0000000167
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Abstract: Non-stoichiometry influences both the thermodynamic and kinetic analyses of the iron oxide redox processes. The thermochemical data of iron oxide redox reactions in various textbooks are not consistent, and the kinetic characteristics are not well understood because of the nonstoichiometry. To clarify such confusions, some famous thermodynamic data are compared, and highly precise experimental work conducted for verification. It is shown that the thermodynamic data for the pure iron oxide reduction reactions f… Show more

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Cited by 7 publications
(1 citation statement)
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“…In magnetite (Fe 3− δ O 4 ), there are possible iron deficiencies up to 3% and iron surpluses up to 1%. [ 14,22 ] The main mechanisms of nonstoichiometry of magnetite are iron ions in crystal lattice interstitial places at low oxygen partial pressures and the iron vacancies at high oxygen partial pressures. Although there are some limitations in Dieckmann's iron cation diffusion model, [ 23,24 ] experimental results showed a good agreement with the calculation results for −0.01 < δ < 0.1.…”
Section: Theoretical and Thermodynamic Analysesmentioning
confidence: 99%
“…In magnetite (Fe 3− δ O 4 ), there are possible iron deficiencies up to 3% and iron surpluses up to 1%. [ 14,22 ] The main mechanisms of nonstoichiometry of magnetite are iron ions in crystal lattice interstitial places at low oxygen partial pressures and the iron vacancies at high oxygen partial pressures. Although there are some limitations in Dieckmann's iron cation diffusion model, [ 23,24 ] experimental results showed a good agreement with the calculation results for −0.01 < δ < 0.1.…”
Section: Theoretical and Thermodynamic Analysesmentioning
confidence: 99%