Thermogravitational measurement of the Soret coefficient of liquid mixtures

被引：72

作者：

Bou-Ali, MM

Ecenarro, O

Madariaga, JA

Santamaria, CM

Valencia, JJ

机构：

[1] Univ Basque Country, Dept Fis Aplicada 2, E-48080 Bilbao, Spain

[2] Univ Publ de Navarra, Dept Ingn Mecan Energet & Mat, Pamplona, Spain

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1998年 / 10卷 / 15期

关键词：

D O I：

10.1088/0953-8984/10/15/009

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have designed and constructed a thermogravitational column for determining the Sorer coefficient of liquid mixtures. The excellent agreement of the results obtained for toluene and n-hexane mixtures with recent accurate measurements performed by optical methods shows the validity of the thermogravitational method when a column with the correct geometry is used. We have applied this technique to determine the Soret coefficient of the binary systems benzene-n-heptane and carbon tetrachloride with cyclohexane, methanol and ethanol. Comparison with the literature data allows us to determine the reliability of the existing measurements of thermal diffusion for these mixtures.

引用

收藏

页码：3321 / 3331

页数：11

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