Three-Phase Melting Curves in the Binary System of Carbon Dioxide and Water
| Autor: | E H Abramson |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
History
Materials science Aqueous solution Melting temperature Thermodynamics 02 engineering and technology 010502 geochemistry & geophysics 021001 nanoscience & nanotechnology 01 natural sciences Ice VII Computer Science Applications Education chemistry.chemical_compound chemistry Three-phase Carbon dioxide Melting point Binary system Invariant (mathematics) 0210 nano-technology 0105 earth and related environmental sciences |
| Zdroj: | Journal of Physics: Conference Series. 950:042019 |
| ISSN: | 1742-6596 1742-6588 |
| DOI: | 10.1088/1742-6596/950/4/042019 |
| Popis: | Invariant, three-phase melting curves, of ice VI in equilibrium with solid CO2, of ice VII in equilibrium with solid CO2, and of solid CO2 in simultaneous equilibrium with a majority aqueous and a majority CO2 fluid, were explored in the binary system of carbon dioxide and water. Diamond-anvil cells were used to develop pressures of 5 GPa. Water exhibits a large melting temperature depression (73°C less than its pure melting temperature of 253°C at 5 GPa) indicative of large concentrations of CO2 in the aqueous solution. The melting point of water-saturated CO2 does not show a measureable departure from that of the pure system at temperatures lower than ~200°C and only 10°C at 5 GPa (from 327°C). |
| Databáze: | OpenAIRE |
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