Simultaneous Determination of Thermal and Mutual Diffusivity of Binary Mixtures of n-Octacosane with Carbon Monoxide, Hydrogen, and Water by Dynamic Light Scattering

Journal article


Publication Details

Author(s): Heller A, Koller TM, Rausch MH, Fleys MSH, Bos ANR, van der Laan GP, Makrodimitri ZA, Economou IG, Fröba AP
Journal: Journal of Physical Chemistry B
Publisher: American Chemical Society
Publication year: 2014
Volume: 118
Pages range: 3981-3990
ISSN: 1520-6106
eISSN: 1520-5207
Language: English


Abstract


It is demonstrated that thermal and mutual diffusivities of binary mixtures of n-octacosane (n-C28H58) with carbon monoxide (CO), hydrogen (H-2), and water (H2O) are simultaneously accessible by dynamic light scattering (DLS). As the light-scattering signals originating from thermal and concentration fluctuations appear in similar time scales, different data evaluation strategies were tested to achieve minimum uncertainties in the resulting transport properties. To test the agreement of the respective theoretical model with the DLS signals in the regression, an improved multifit procedure is introduced. With the selected data evaluation strategy, uncertainties of 4 to 15% and 4 to 30% in the thermal and mutual diffusivities, respectively, could be obtained for the binary mixtures. The mutual diffusivities for the mixtures measured at temperatures ranging from 398 to 523 K and pressures of 5 to 30 bar at saturation conditions are in good agreement with molecular dynamics simulations and data from the literature.



FAU Authors / FAU Editors

Fröba, Andreas Paul Prof. Dr.-Ing.
Lehrstuhl für Advanced Optical Technologies - Thermophysical Properties
Heller, Andreas
Professur für Advanced Optical Technologies - Thermophysical Properties
Koller, Thomas Manfred Dr.-Ing.
Professur für Advanced Optical Technologies - Thermophysical Properties
Rausch, Michael Heinrich Dr.-Ing.
Lehrstuhl für Technische Thermodynamik


Additional Organisation
Erlangen Graduate School in Advanced Optical Technologies


How to cite

APA:
Heller, A., Koller, T.M., Rausch, M.H., Fleys, M.S.H., Bos, A.N.R., van der Laan, G.P.,... Fröba, A.P. (2014). Simultaneous Determination of Thermal and Mutual Diffusivity of Binary Mixtures of n-Octacosane with Carbon Monoxide, Hydrogen, and Water by Dynamic Light Scattering. Journal of Physical Chemistry B, 118, 3981-3990. https://dx.doi.org/10.1021/jp500300y

MLA:
Heller, Andreas, et al. "Simultaneous Determination of Thermal and Mutual Diffusivity of Binary Mixtures of n-Octacosane with Carbon Monoxide, Hydrogen, and Water by Dynamic Light Scattering." Journal of Physical Chemistry B 118 (2014): 3981-3990.

BibTeX: 

Last updated on 2018-11-08 at 02:59