The role of molecular interactions in the change of sign of the Soret coefficient

被引：38

作者：

Rousseau, B

Nieto-Draghi, C

Avalos, JB

机构：

[1] Univ Paris 11, Chim Phys Lab, F-91405 Orsay, France

[2] Univ Rovira & Virgili, ETSEQ, Dept Engn Quim, Tarragona 43007, Spain

来源：

EUROPHYSICS LETTERS | 2004年 / 67卷 / 06期

关键词：

D O I：

10.1209/epl/i2004-10136-3

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The change of sign with composition in aqueous mixtures of associating fluids is analyzed by means of molecular-dynamics simulations. The results obtained are in quantitative agreement with the experimental data in water-ethanol and water-methanol solutions, which exhibit the mentioned change of sign. A subsequent theoretical analysis is addressed to establish a relationship between the dependence of the Soret coefficient with composition with the existence of large inter-species interactions. Although the change of sign of the Soret coefficient with composition is not only due to the so-called chemical contribution analyzed here, we discuss the role that these interactions play in such a change of sign.

引用

页码：976 / 982

页数：7

共 38 条

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[2]

Callen HB., 1985, THERMODYNAMICS INTRO, V2, DOI 10.1119/1.19071

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