Liquid Viscosity and Surface Tension of n-Dodecane, n-Octacosane, Their Mixtures, and a Wax between 323 and 573 K by Surface Light Scattering

Journal article
(Original article)


Publication Details

Author(s): Koller TM, Klein T, Giraudet C, Chen J, Kalantar A, van der Laan GP, Rausch MH, Fröba AP
Journal: Journal of Chemical and Engineering Data
Publisher: AMER CHEMICAL SOC
Publication year: 2017
Volume: 62
Journal issue: 10
Pages range: 3319-3333
ISSN: 0021-9568
Language: English


Abstract

The present contribution provides experimental data for the liquid viscosity and surface tension of n-alkane based model systems at temperatures up to 573 K. The fundamental advantage of the used surface light scattering (SLS) method lies in its application in thermodynamic equilibrium without calibration in a contactless way. The investigated systems comprise the pure fluids n-dodecane (n-C12H26) and n-octacosane (n-C28H58), their binary mixture at a n-C12H26 mole fraction of about 0.3, and the commercially available hydrocarbon wax SX-70 representing a multicomponent mixture of n-alkanes with a broad chain length distribution. For the first time, it could be demonstrated that the SLS method can simultaneously access the liquid viscosity and surface tension of such medium- to long-chained n-alkane systems close to saturation conditions over a broad temperature range from 323 to 573 K. Typical measurement uncertainties of 2% based on a coverage factor k = 2, i.e., a level of confidence of more than 95%, were obtained. Over the entire temperature range, a simple polynomial equation for the dynamic viscosity and a modified van der Waals equation for the surface tension represent the measured data of the pure and binary systems well. The present investigations improve the data situation for hydrocarbon systems in the high-temperature range where no measurement results exist in literature.


FAU Authors / FAU Editors

Fröba, Andreas Paul Prof. Dr.-Ing.
Lehrstuhl für Advanced Optical Technologies - Thermophysical Properties
Giraudet, Cédric Dr.
Erlangen Graduate School in Advanced Optical Technologies
Klein, Tobias
Lehrstuhl für Advanced Optical Technologies - Thermophysical Properties
Koller, Thomas Manfred Dr.-Ing.
Lehrstuhl für Advanced Optical Technologies - Thermophysical Properties
Rausch, Michael Heinrich Dr.-Ing.
Lehrstuhl für Advanced Optical Technologies - Thermophysical Properties


Additional Organisation
Erlangen Graduate School in Advanced Optical Technologies


External institutions with authors

Shell Global Solutions International B.V.


How to cite

APA:
Koller, T.M., Klein, T., Giraudet, C., Chen, J., Kalantar, A., van der Laan, G.P.,... Fröba, A.P. (2017). Liquid Viscosity and Surface Tension of n-Dodecane, n-Octacosane, Their Mixtures, and a Wax between 323 and 573 K by Surface Light Scattering. Journal of Chemical and Engineering Data, 62(10), 3319-3333. https://dx.doi.org/10.1021/acs.jced.7b00363

MLA:
Koller, Thomas Manfred, et al. "Liquid Viscosity and Surface Tension of n-Dodecane, n-Octacosane, Their Mixtures, and a Wax between 323 and 573 K by Surface Light Scattering." Journal of Chemical and Engineering Data 62.10 (2017): 3319-3333.

BibTeX: 

Last updated on 2018-23-07 at 03:10