EQUATION OF STATE FOR AQUEOUS SILICA SPECIES AT PRESSURES FROM 1 BAR TO 20 KBAR AND TEMPERATURES FROM 25O TO 900°C BASED ON SIMULATED VALUES OF THE DIELECTRIC CONSTANT
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dc.contributor.author | Wasserman E. | |
dc.contributor.author | Wood B. | |
dc.contributor.author | Davies A. | |
dc.date.accessioned | 2020-11-24T02:06:17Z | |
dc.date.available | 2020-11-24T02:06:17Z | |
dc.date.issued | 1995 | |
dc.identifier | https://elibrary.ru/item.asp?id=656408 | |
dc.identifier.citation | Chemical Geology, 1995, , 1, 3-9 | |
dc.identifier.issn | 0009-2541 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/19458 | |
dc.description.abstract | We have used modified Born theory to extend the Shock-Helgeson-Sverjensky equation of state of aqueous silica to 20 kbar and 900°C. An important requirement of this equation of state is the dielectric constant of the solvent (ε), which has been experimentally measured only to 5 kbar and 550°C. Our extension of the Shock-Helgeson-Sverjensky equation relies, therefore, on molecular dynamics simulations which we have previously shown to reproduce the experimental data at densities between 0.25 and 1.0 g cm-3 and temperatures up to 1000°C (pressure ranging from 0.5 to 20 kbar). A combination of recent solubility measurements and of simulated values of ε provide the basis for a quantitative description of the thermodynamic properties of aqueous silica over most of the range of geologic interest from 1 bar to 20 kbar and 25-900°C. | |
dc.title | EQUATION OF STATE FOR AQUEOUS SILICA SPECIES AT PRESSURES FROM 1 BAR TO 20 KBAR AND TEMPERATURES FROM 25O TO 900°C BASED ON SIMULATED VALUES OF THE DIELECTRIC CONSTANT | |
dc.type | Статья |
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