Universität zu Köln

de Mezquia, David Alonso ORCID: 0000-0002-6014-2196, Wang, Zilin, Lapeira, Estela ORCID: 0000-0001-7956-3022, Klein, Michael, Wiegand, Simone ORCID: 0000-0001-6333-1956 and Bou-Ali, M. Mounir (2014). Thermodiffusion, molecular diffusion and Soret coefficient of binary and ternary mixtures of n-hexane, n-dodecane and toluene. Eur. Phys. J. E, 37 (11). NEW YORK: SPRINGER. ISSN 1292-895X

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Abstract

In this study, the thermodiffusion, molecular diffusion, and Soret coefficients of 12 binary mixtures composed of toluene, n-hexane and n-dodecane in the whole range of concentrations at atmospheric pressure and temperatures of 298.15K and 308.15K have been determined. The experimental measurements have been carried out using the Thermogravitational Column, the Sliding Symmetric Tubes and the Thermal Diffusion Forced Rayleigh Scattering techniques. The results obtained using the different techniques show a maximum deviation of 9% for the thermodiffusion coefficient, 8% for the molecular diffusion coefficient and 2% for the Soret coefficient. For the first time we report a decrease of the thermodiffusion coefficient with increasing ratio of the thermal expansion coefficient and viscosity for a binary mixture of an organic ring compound with a short n-alkane. This observation is discussed in terms of interactions between the different components. Additionally, the thermogravitational technique has been used to measure the thermodiffusion coefficients of four ternary mixtures consisting of toluene, n-hexane and n-dodecane at 298.15 K. In order to complete the study, the values obtained for the molecular diffusion coefficient in binary mixtures, and the thermodiffusion coefficient of binary and ternary mixtures have been compared with recently derived correlations.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code de Mezquia, David Alonso UNSPECIFIED orcid.org/0000-0002-6014-2196 UNSPECIFIED Wang, Zilin UNSPECIFIED UNSPECIFIED UNSPECIFIED Lapeira, Estela UNSPECIFIED orcid.org/0000-0001-7956-3022 UNSPECIFIED Klein, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED Wiegand, Simone UNSPECIFIED orcid.org/0000-0001-6333-1956 UNSPECIFIED Bou-Ali, M. Mounir UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-423496
DOI:	10.1140/epje/i2014-14106-2
Journal or Publication Title:	Eur. Phys. J. E
Volume:	37
Number:	11
Date:	2014
Publisher:	SPRINGER
Place of Publication:	NEW YORK
ISSN:	1292-895X
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Physical Chemistry
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language C-8-C-16 NORMAL-ALKANES; THERMAL-DIFFUSION; ETHYLBENZENE; BEHAVIOR; SYSTEMS; VALUES Multiple languages Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Applied; Polymer Science Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/42349