On the calculation of phase equilibrium of Thorium using van der Waals model

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NAJAFI M.; Khajevand M.

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Paper Information

Journal: JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY Year:2020 | Volume:40 | Issue:90 (4) Page(s): 51-56

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Title

On the calculation of phase equilibrium of Thorium using van der Waals model

Author(s)

NAJAFI M. | Khajevand M. | Issue Writer Certificate

Keywords

ThoriumQ2

Phase equilibriumQ1

Van der Waals modelQ1

Equation of state (eos)Q2

Thermodynamic functionsQ1

Abstract

Thorium is an actinide substance with an atomic number of 90. Natural Thorium is radioactive and, although not fissile, it undergoes a nuclear reaction (n, γ ) and then beta radiation into a fissile material of the uranium. In this paper, some thermodynamic properties of the Thorium have been investigated. On the other hand, the Equation of State (EOS) is an essential and suitable tool for studying the thermo-physical behavior of the materials and predicting them in different conditions in terms of pressure, temperature and amount. At present, there are different equations of state that can be categorized as theoretically, empirically, and semi-empirical. The purpose of this paper is to study some Thermodynamic functions of Thorium in liquid-vapor equilibrium such as vapor pressure, saturated liquid and vapor density, enthalpy and internal energy of vaporization using equations of state in the Van der Waals model. In this model, the thermodynamic behavior of the materials is due to the contribution of the attractive and repulsive forces, which itself is represented as a sum of the aforementioned statements mentioned above in a compressibility factor. In this research, we use the van der Waals equation, Berthelot equation, and the Radilich-Kwang equation. Our studies show the data obtained from Berthelot equation is in better agreement with experimental data for the studied Thermodynamic functions quantitatively and qualitatively.

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APA: Copy

NAJAFI, M., & Khajevand, M.. (2020). On the calculation of phase equilibrium of Thorium using van der Waals model. JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, 40(4 (90) ), 51-56. SID. https://sid.ir/paper/97598/en

Vancouver: Copy

NAJAFI M., Khajevand M.. On the calculation of phase equilibrium of Thorium using van der Waals model. JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY[Internet]. 2020;40(4 (90) ):51-56. Available from: https://sid.ir/paper/97598/en

IEEE: Copy

M. NAJAFI, and M. Khajevand, “On the calculation of phase equilibrium of Thorium using van der Waals model,” JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, vol. 40, no. 4 (90) , pp. 51–56, 2020, [Online]. Available: https://sid.ir/paper/97598/en

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