Extension of Tao-Mason Equation of State to Heavy n-Alkanes

Fakhri Yousefi; Hajir Karimi; Mohammad Mehdi Papari

doi:10.1016/S1004-9541(13)60548-0

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Extension of Tao-Mason Equation of State to Heavy n-Alkanes

化工热力学 | Updated：2026-01-06

- Extension of Tao-Mason Equation of State to Heavy n-Alkanes
- Chinese Journal of Chemical Engineering Vol. 21, Issue 8, Pages: 894-9001004-954160548-0(2013)
- Affiliations：
  
  1. 2 Department of Chemical Engineering, Yasouj University, Yasouj,Iran,75914-353
  2. 3 Department of Chemistry, Shiraz University of Technology, Shiraz,Iran,71555-313
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(13)60548-0
  CLC：
- Published：2013
- Accepted：
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-Alkanes[J]. Chinese Journal of Chemical Engineering, 2013, 21(8): 894-900.
DOI：

-Alkanes[J]. Chinese Journal of Chemical Engineering, 2013, 21(8): 894-900. DOI： 10.1016/S1004-9541(13)60548-0.

摘要

Abstract

In our previous paper we extended the Tao and Mason equation of state (TM EOS) to refrigerant fluids

using the speed of sound data. This is a continuation for evaluating TM EOS in predicting PVT properties of heavy n-alkanes. Liquid density of long-chain n-alkane systems from C

to C

have been calculated using an analytical equation of state based on the statistical-mechanical perturbation theory. The second virial coefficients of these n-alkanes are scarce and there is no accurate potential energy function for their theoretical calculation. In this work the second virial coefficients are calculated using a corresponding state correlation based on surface tension and liquid density at the freezing point. The deviation of calculated densities of these alkanes is within 0.5% from experimental data. The densities of n-alkanes obtained from the TM EOS are compared with those calculated from Ihm-Song-Mason equation of state and the corresponding-states liquid densities (COSTALD). Our results are in favor of the preference of the TM EOS over other two equations of state.

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