Experimental investigation and calculation of the phase diagram of the binary system (NaNO 3 + TlNO 3 )
Source abstract
Abstract
Solid–solid and solid–liquid equilibria in the (LiNO3 + TlNO3) binary system were investigated under atmospheric pressure, using simultaneous direct and differential thermal analysis (STA/DTA), differential scanning calorimetry (DSC) and X-ray diffraction (XRD) techniques. The (LiNO3 + TlNO3) phase diagram exhibits one eutectic reaction at (405 ± 1) K and two plateaus, at (349 ± 1) and (417 ± 1) K, corresponding to TlNO3 polymorphic transitions. The eutectic transformation enthalpy, measured by DSC technique, is (60 ± 3) kJ kg−1. An optimization of the thermodynamic parameters in the binary system (LiNO3 + TlNO3) was performed. The calculated phase diagram and the thermodynamic functions agree well with the experimental data.
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Research context
OpenAlex topics: Solid-state spectroscopy and crystallography · Thermal Expansion and Ionic Conductivity · Inorganic Fluorides and Related Compounds
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