Reduction Equilibria of Iron Oxides. I : Measurement of the Equilibrium of Reaction, Fe_3O_4 (in Wuestit) +CO=3FeO (in Wuestit) +CO_2
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The author measured the equilibrium of the following reaction at the temperature range from 700℃ to 1.200℃, Fe_3O_4 (in wuestit)+CO=3FeO (in wuestit) +CO_2 According to experimental results, wuestit can not be recognized as an ideal solution. Consequently considering the activities of FeO and Fe_3O_4 in wuestit, the author obtained the equilibrium constant of the reaction (5) at given temperatures and temperature function of log K. Then, from the equilibrium constant of the reaction (5) and the equilibrium constant of water gas reaction or the dissociation constant of CO_2, the author calculated the equilibrium between wuestit and H_2O-H_2 mixed gas and dissociation pressure of wuestit. Furthermore the author calculated activities of a_<FeO> and a_<Fe_3O_4> in wuestits with several O_2 concentrations at given temperatures from experimental data, and performed some thermodynamical calculations.
- 東北大学の論文
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