| Tao-Mason状态方程扩展用于重正烷烃(英文) |
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| 作者姓名： | Fakhri Yousefi Hajir Karimi Mohammad Mehdi Papari |
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| 作者单位： | 1.Department of Chemistry, Yasouj University, Yasouj, 75914-353, Iran;2.Department of Chemical Engineering, Yasouj University, Yasouj, 75914-353, Iran;3.Department of Chemistry, Shiraz University of Technology, Shiraz 71555-313, Iran |
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| 基金项目： | H. Karimi and F. Yousefi would like to thank Yasouj University for supporting this project |
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| 摘 要： | 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 9 to C 20 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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| 关 键 词： | heavy n-alkanes density Tao-Mason equation of state Ihm-Song-Mason equation of state |
| 收稿时间： | 2012-03-11 |
Extension of Tao-Mason Equation of State to Heavy n-Alkanes |
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| Fakhri Yousefi,Hajir Karimi,Mohammad Mehdi Papari.Extension of Tao-Mason Equation of State to Heavy n-Alkanes[J].Chinese Journal of Chemical Engineering,2013,21(8):894-900. |
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| Authors: | Fakhri Yousefi Hajir Karimi and Mohammad Mehdi Papari |
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| Affiliation: | 1.Department of Chemistry, Yasouj University, Yasouj, 75914-353, Iran;2.Department of Chemical Engineering, Yasouj University, Yasouj, 75914-353, Iran;3.Department of Chemistry, Shiraz University of Technology, Shiraz 71555-313, Iran |
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| 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 C9 to C20 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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| Keywords: | density Tao-Mason equation of state Ihm-Song-Mason equation of state |
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