Adsorption of hexane and cyclohexane vapours at the water drop surface

被引：5

作者：

Miller, Reinhard ^{[1
]}

Aksenenko, Eugene V. ^{[2
]}

Kovalchuk, Volodymir I. ^{[3
]}

Tarasevich, Yuri I. ^{[2
]}

Fainerman, Valentin B. ^{[4
]}

机构：

[1] MPI Colloids & Interfaces, Potsdam, Germany

[2] Inst Colloid Chem & Chem Water, Kiev, Ukraine

[3] Inst Biocolloid Chem, Kiev, Ukraine

[4] SINTERFACE Technol, Berlin, Germany

来源：

PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING | 2018年 / 54卷 / 01期

关键词：

water/heptane vapour interface; drop profile analysis tensiometry; dynamic surface tensions; adsorption kinetics; INTERMOLECULAR FORCES; VAPOR/WATER INTERFACE; WATER/VAPOR INTERFACE; MONOLAYERS; ALKANE; PHOSPHOLIPIDS; COADSORPTION; THERAPY; TENSION; LAYERS;

D O I：

10.5277/ppmp1812

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：

The dependence of the dynamic surface tension of water at the interface with saturated hexane and cyclohexane vapours was measured by the drop profile analysis method. The surface tension for the adsorption layers of cyclohexane at different temperatures was compared with the results reported earlier for the adsorption of hexane and other alkanes from the vapour phase on water drops. It is shown that cyclohexane is adsorbed significantly slower than the adsorption of hexane occurs, and is characterised by a much larger induction time. The error in the drop radius measurements at 40 degrees C attains 45 mu m. The experimental rheologic characteristics of the adsorbed layers are studied and the results are compared with the model developed to describe an adsorption process governed by a kinetic mechanism.

引用

页码：54 / 62

页数：9

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