Solid-liquid stable phase equilibria of the ternary systems MgCl2 + MgB6O10+ H2O AND MgSO4 + MgB6O10 + H2O at 308.15 K
AUTOR(ES)
Meng, Lingzong, Li, Dan
FONTE
Braz. J. Chem. Eng.
DATA DE PUBLICAÇÃO
2014-03
RESUMO
The solubilities and the relevant physicochemical properties of the ternary systems MgCl2 + MgB6O10 + H2O and MgSO4 + MgB6O10 + H2O at 308.15 K were investigated using an isothermal dissolution method. It was found that there is one invariant point, two univariant curves, and two crystallization regions of the systems. The systems belong to a simple co-saturated type, and neither double salts nor solid solutions were found. Based on the extended HW model and its temperature-dependent equations, the single-salt Pitzer parameters β(0), β(1), β(2) and CØ for MgCl2, MgSO4, and Mg(B6O7)(OH)6, the mixed ion-interaction parameters θCl,B6O10, θSO4,B6O10, ΨMg,Cl,B6O10, ΨMg,SO4,B6O10 of the systems at 308.15 K were fitted, In addition, the average equilibrium constants of the stable equilibrium solids at 308.15 K were obtained by a method using the activity product constant. Then the solubilities of the ternary systems are calculated. The calculated solubilities agree well with the experimental values.
Documentos Relacionados
- Solubility measurement and solid-liquid equilibrium model for the ternary system MgBr2 + MgSO4 + H2O at 288.15 K
- Influência dos sais MgCl 2 e CaCl 2 no comportamento de hidratação do MgO
- Differential response of the bvg virulence regulon of Bordetella pertussis to MgSO4 modulation.
- Protection of Mycobacterium smegmatis from Ethambutol and Streptomycin Inhibition by MgSO4 and Polyamines
- Base preferences for DNA binding by the bHLH-Zip protein USF: effects of MgCl2 on specificity and comparison with binding of Myc family members.