Fugacity-concentration relationship of dilute hydrogen in water at elevated temperature and pressure |
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| Authors: | Noriaki Kishima Hitoshi Sakai |
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| Institution: | Institute for Thermal Spring Research, Okayama University, Misasa-cho, Tottori-ken , 682-02Japan |
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| Abstract: | The fugacity vs. concentration ratio(Y) of dilute hydrogen dissolved in water was determined at temperatures below 500°C and pressures below 1000 bar by measuring H2 concentrations in magnetite-hematite-water and palladium hydride-water systems. Combining these results with reported solubility data of H2 in water and with the Shaw's expression for the activity-composition relationship of H2 H2O mixture at higher temperatures, theP-T-Y diagram was constructed over theP-T range below 900°C and 1000 bar. |
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