Phase equilibria and thermodynamic analysis of liquid–liquid immiscibility in the system SiO2–Na2O–MoO3
Phase equilibrium experiments were carried out in the SiO 2 –Na 2 O–MoO 3 system at 1200ºC and 1000ºC. We found that immiscible phase region in this system is narrower than that reported previously. By combining phase relationship and thermodynamic data and assuming associate species model, interact...
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Veröffentlicht in: | Journal of thermal analysis and calorimetry 2024-10 |
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Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | Phase equilibrium experiments were carried out in the SiO
2
–Na
2
O–MoO
3
system at 1200ºC and 1000ºC. We found that immiscible phase region in this system is narrower than that reported previously. By combining phase relationship and thermodynamic data and assuming associate species model, interaction parameters to describe enthalpy of mixing of SiO
2
–Na
2
O–MoO
3
liquid were optimized by CALPHAD methodology. The thermodynamic database can be applied to thermodynamic calculations of silicate systems containing molybdenum, such as the vitrification process of high-level radioactive waste. |
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ISSN: | 1388-6150 1588-2926 |
DOI: | 10.1007/s10973-024-13659-7 |