THERMAL-DIFFUSION IN THE CRITICAL REGION OF BINARY-LIQUID SYSTEMS

被引：7

作者：

HAASE, R

DUCKER, KH

BUCHNER, H

SCHWINUM, J

机构：

[1] J. Schwinum Institut für Physikalische Chemie, RWTH, Aachen

来源：

ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS | 1994年 / 186卷

关键词：

THERMAL DIFFUSION; CRITICAL STATE; LIQUID MIXTURES;

D O I：

10.1524/zpch.1994.186.Part_1.113

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We present results of interferometric measurements of the thermal diffusion factor in the critical regions of the liquid systems n-hexane + nitrobenzene (upper consolute point) and water + triethylamine (lower consolute point). In the steady state there is an enrichment of the lighter component (hexane) or of the heavier component (triethylamine) in the hotter region in the first or second system, respectively. The absolute value of the thermal diffusion factor increases rapidly in the vicinity of a critical solution point and probably becomes infinite in the critical state.

引用

页码：113 / 117

页数：5