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Experimental modeling of Pd transport by sulfide hydrothermal fluidстатья
- Авторы: Rubtsova E.A., Akinfiev N.N., Zotov A.V., Tagirov B.R.
- Сборник: EXPERIMENT IN GeoSciences Mineralogy Petrology Geochemistry Crystallography Geophysics Isotopy
- Том: 29
- Год издания: 2023
- Место издания: Online
- Первая страница: 121
- Последняя страница: 124
- Аннотация: The solubility of PdS(cr) (vysotskite) was measured in aqueous H2S (0.1-2.0m , mol/kg H2O) and H2S + NaOH (0.02-0.4m H2S + 0.05-0.4m NaOH) solutions at 4, 25, 75°C, 1 bar and at 450, 490°C, 1000 bar. The values of the Gibbs free energies of Pd(HS)2° and Pd(HS)3- were calculated and preliminary values of the constants of the PdS(cr) dissolution reactions with the formation of these complexes (K° Pd(HS)2° ; K°Pd(HS)3-) were obtained on their basis. The obtained constants of the reactions in the temperature range of 4 – 490°C were fitted to the density model equation which can be used to predict the solubility of Pd-bearing minerals up to 700 °C, 2000 bar.
- Добавил в систему: Рубцова Екатерина Антоновна