Adsorption of hexane and cyclohexane vapours at the water drop surface

• Autorzy: Miller R. , Aksenenko E. V. , Kovalchuk V. I. , Tarasevich Y. I. , Fainerman V. B.

Identyfikatory

DOI

10.5277/ppmp1812

• Języki publikacji: EN

Abstrakty

EN

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 ºC attains 45 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.

Słowa kluczowe

EN

water-heptane vapour interface; drop profile analysis tensiometry; dynamic surface tension; adsorption kinetics

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2018
• Tom: Vol. 54, iss. 1
• Strony: 54--62
• Opis fizyczny: Bibliogr. 30 poz., rys., tab.

Twórcy

autor

Miller R.

• MPI Colloids and Interfaces, Potsdam, Germany

autor

Aksenenko E. V.

• Institute of Colloid Chemistry and Chemistry of Water, Kyiv (Kiev), Ukraine

autor

Kovalchuk V. I.

• Institute of Biocolloid Chemistry, Kyiv (Kiev), Ukraine

autor

Tarasevich Y. I.

• Institute of Colloid Chemistry and Chemistry of Water, Kyiv (Kiev), Ukraine

autor

Fainerman V. B.

• SINTERFACE Technologies, Berlin, Germany

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