Fick Diffusion Coefficients and Thermal Diffusivities in Binary Liquid Mixtures Containing Alkanes and/or Cyclic Hydrocarbons by Using the Shadowgraph Method

Schmidt P, Huang X, Fröba AP (2024)

Publication Language: English

Publication Type: Journal article, Original article

Publication year: 2024

Journal

Journal of Chemical and Engineering Data American Chemical Society

Book Volume: 69

Pages Range: 3001–3016

Journal Issue: 9

DOI: 10.1021/acs.jced.4c00290

Abstract

The present work reports Fick diffusion coefficients D11 and thermal diffusivities a of binary liquid mixtures containing n-heptane, 2,3-dimethylpentane, methylcyclohexane, toluene, n-decane, butylcyclohexane, butylbenzene, naphthalene, cis- or trans-decahydronaphthalene, 1,2,3,4-tetrahydronaphthalene, diphenylmethane, dicyclohexylmethane, ortho-benzyltoluene, or ortho-perhydrobenzyltoluene at equimolar composition determined by the shadowgraph method. Experiments were performed in the compressed liquid phase at temperatures T from (298 to 473) K and pressures p ≈ (0.1 to 1.4) MPa as well as at p from (0.1 to 30) MPa and T = 298 K or, studying a mixture of naphthalene and toluene, T = 373 K. D11 and a were determined with average expanded experimental uncertainties (k = 2) of (13 and 8.0)% and their relationships to the molecular characteristics of the mixture components were analyzed. For D11, dependencies on the molar mass, viscosity, and molecular structures such as branching, alkane (side) chain length, stereoisomerism, and aromatic or aliphatic rings of the mixture components were identified. Regarding a, only influences related to stereoisomerism as well as diphenylmethane, ortho-benzyltoluene, and their hydrogenated species were found. Additionally, the T-dependent D11 and a data were compared to corresponding data from the literature.

Authors with CRIS profile

Patrick Schmidt Institute of Advanced Optical Technologies - Thermophysical Properties (AOT-TP) Xiaohan Huang Institute of Advanced Optical Technologies - Thermophysical Properties (AOT-TP) Andreas Paul Fröba Institute of Advanced Optical Technologies - Thermophysical Properties (AOT-TP)

Additional Organisation(s)

Erlangen Graduate School in Advanced Optical Technologies (SAOT)

Related research project(s)

Development of the shadowgraph method for the accurate determination of diffusivities of fluid mixtures under high pressures and high temperatures Feb. 1, 2021 - March 31, 2024

How to cite

APA:

Schmidt, P., Huang, X., & Fröba, A.P. (2024). Fick Diffusion Coefficients and Thermal Diffusivities in Binary Liquid Mixtures Containing Alkanes and/or Cyclic Hydrocarbons by Using the Shadowgraph Method. Journal of Chemical and Engineering Data, 69(9), 3001–3016. https://doi.org/10.1021/acs.jced.4c00290

MLA:

Schmidt, Patrick, Xiaohan Huang, and Andreas Paul Fröba. "Fick Diffusion Coefficients and Thermal Diffusivities in Binary Liquid Mixtures Containing Alkanes and/or Cyclic Hydrocarbons by Using the Shadowgraph Method." Journal of Chemical and Engineering Data 69.9 (2024): 3001–3016.

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