Self-Diffusion Coefficients from Entropy Scaling Using the PCP-SAFT Equation of State
Self-Diffusion Coefficients from Entropy Scaling Using the PCP-SAFT Equation of State
复制标题
使用 PCP-SAFT 状态方程计算熵缩放的自扩散系数
DOI:
10.1021/acs.iecr.8b02406
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发表时间:
2018
影响因子:
4.2
通讯作者:
中科院分区:
文献类型:
--
作者:
This study proposes a model for self-diffusion coefficients of pure substances from entropy scaling using the perturbed-chain polar statistical associating fluid theory (PCP-SAFT) equation of state. In accordance with the entropy scaling approach proposed by Y. Rosenfeld [Rosenfeld, Y.Phys. Rev. A1977, 15, 2545–2549], we observe that the self-diffusion coefficient of real substances, once made dimensionless with an appropriate expression, only depends on residual entropy. The proposed model requires 3 parameters for each pure substance. For substances with scarce experimental data, however, a scheme is proposed to estimate one or two of these parameters. We study 133 substances from more than 14 different chemical families and find the average absolute deviation of 8.2% between the proposed model and experimental data (9992 data points). The model shows satisfying robustness for extrapolating self-diffusion coefficients to conditions rather distant from the state points where experimental data are available.
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影响因子:
4.2
作者:
Xin Liu;T. Vlugt;A. Bardow
通讯作者:
A. Bardow
DOI:
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发表时间:
1956
期刊:
影响因子:
--
作者:
H. C. Longuet;J. Pople
通讯作者:
J. Pople
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
Carlos M. Silva;Hongqin Liu;E. Macedo
通讯作者:
E. Macedo
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
Octavio Suárez;I. Medina;Consuelo Pizarro;J. L. Bueno
通讯作者:
J. L. Bueno
影响因子:
4.4
作者:
R. Hellmann;E. Bich;E. Vogel;A. S. Dickinson;V. Vesovic
通讯作者:
V. Vesovic