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The extraction-quench technique for determination of the thermodynamic properties of solute complexes; application to quartz solubility in fluid mixtures
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1983
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Solvent ExtractionEngineeringSolute ComplexesNecessary Solubility DataExtraction-quench TechniqueExperimental ThermodynamicsChemistrySolution (Chemistry)Chemical EngineeringMineral-fluid InteractionAnalytical ChemistryThermodynamicsChromatographyFluid MixturesMaterials SciencePhase EquilibriumGeochemistryHydration StateChemical KineticsHydrothermal Geochemistry
Hydration state, charge and chemical stoichiometry, and Gibbs free energy of aqueous species.A hydrothermal apparatus, capable of obtaining the necessary solubility data in fluid mixtures, is described. Stoichiometry of the dominant aqueous silica species of Si(OH) 4 . 2H 2 O in the supercritical region of H 2 O. Prediction of silica concentrations in CO 2 -H 2 O mixtures in the system CaO-MgO-SiO 2 -HCl-CO 2 -H 2 O at 2 kbar and 450 degrees C.--Modified journal abstract.