Prediction of the Boyle temperature, second virial coefficient and Zeno line using the cubic and volume – translated cubic equations of state

Abstract

In this study, the Boyle temperature of 174 substances are predicted using the cubic and volume – translated cubic equations of state. In this regard, the Peng - Robinson (PR), Soave – Redlich – Kwong (SRK), volume – translated Peng – Robinson (VTPR), volume – translated Soave – Redlich – Kwong (VTSRK) and Patel – Teja – Valderrama (PTV) equations of state are used. The Boyle temperature is calculated for different polar, non – polar and associating substances including alkanes, cycloalkanes, alkenes, aromatics, ethers, esters, ketones, refrigerants, halogens, amines and water. The obtained results are compared with the results of other known correlations published so far, such as Tsonopoulos, Meng – Duan and Estrada – Torres et al. equations. For better understanding, the second virial coefficient and the Zeno line (unit compressibility) are also calculated and compared with the available experimental data. The results show that PR, VTPR and PTV have lower average temperature difference between EoSs and Tsonopoulos or Meng – Duan correlations. The dependency of the reduced Boyle temperature (TB/TC) as functions of the Pitzer's acentric factor (ω), hydrocarbon chain length (NC) and the reduced dipole moment (μR) has been also studied.