Abstract
Solid–liquid-phase equilibrium is an important part of chemical thermodynamics, and its basic theoretical research plays a vital role in the advancement of the chemical industry. Solid–liquid equilibria for binary mixtures of 3-nitrotoluene and 4-nitrotoluene were measured using differential scanning calorimetry under atmospheric pressure (101.3 kPa). The results showed that the phase diagram of the 3-nitrotoluene + 4-nitrotoluene binary system presented a eutectic behavior, and the eutectic point was x1 = 0.6487, TE = 272.15 K. Furthermore, the experimental results were correlated with Wilson and nonrandom two-liquid (NRTL) activity coefficient models well. The relative standard deviations were 0.496 and 0.236, respectively, and the absolute mean deviations were 0.005 and 0.001, respectively.
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Acknowledgements
This work was supported by the Key Technology Support Program of Qinghai Province (No. 215-GX-109A); Natural Science Foundation of Tianjin Municipality (18JCYBJC21200); National Natural Science Foundation of China (U1407204); Yangtze Scholars and Innovative Research Team in Chinese University (IRT-17R81); and the Innovative Research Team of Tianjin Municipal Education Commission (TD12-5004).
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Wang, Y., Liu, X., Zhao, X. et al. Experimental determination and thermodynamic modeling of solid–liquid-phase equilibrium for the 3-nitrotoluene and 4-nitrotoluene binary system. J Therm Anal Calorim 138, 1251–1257 (2019). https://doi.org/10.1007/s10973-019-08356-9
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DOI: https://doi.org/10.1007/s10973-019-08356-9