1
|
Mialdun A, Yasnou V, Barakhovskaia E, Glushchuk A, Shevtsova V. Measurement of Diffusion of Atmospheric Gases in a Liquid Perfluoro Compound by Means of an Optical Technique. J Phys Chem B 2023; 127:3584-3595. [PMID: 37027839 DOI: 10.1021/acs.jpcb.3c01524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
Abstract
We report on accurate measurements of Fickian diffusion coefficients in binary mixtures consisting of hydrofluoroether (a perfluoro compound of methoxy-nonafluorobutane or HFE-7100) with dissolved atmospheric gases CO2, N2, and O2 in the limit of an infinite dilution of the gas. We show that the use of optical digital interferometry (ODI) allows the determination of diffusion coefficients of dissolved gases with relatively small standard uncertainties for this class of experiments. In addition, we illustrate the ability of an optical approach to determine the gas concentration. We compare the capacity of four mathematical models, singly used in the literature, to obtain diffusion coefficients by applying them to the processing of a large amount of experimental data. We quantify their systematic errors and standard uncertainties. The temperature behavior of the diffusion coefficients measured in the range of 10 to 40 °C is consistent with the behavior of the same gases in other solvents available in the literature.
Collapse
Affiliation(s)
- Aliaksandr Mialdun
- Aéro-thermo-mécanique (ATM), CP-165/43, Université Libre de Bruxelles (ULB), Ave. F. D. Roosevelt, 50, Brussels, 1050 Belgium
| | - Viktar Yasnou
- Laboratoire Catalyse & Spectrochimie, Bld. Maréchal Juin 6, 14050 Caen, France
| | - Ella Barakhovskaia
- Aéro-thermo-mécanique (ATM), CP-165/43, Université Libre de Bruxelles (ULB), Ave. F. D. Roosevelt, 50, Brussels, 1050 Belgium
| | - Andrey Glushchuk
- Aéro-thermo-mécanique (ATM), CP-165/43, Université Libre de Bruxelles (ULB), Ave. F. D. Roosevelt, 50, Brussels, 1050 Belgium
| | - Valentina Shevtsova
- Fluid Mechanics Group, Faculty of Engineering, Mondragon University, Loramendi 4, Mondragon, 20500 Spain
- IKERBASQUE, Basque Foundation for Science, Bilbao, 48009 Spain
| |
Collapse
|
2
|
Croccolo F, Brogioli D, Vailati A. Cylindrical flowing-junction cell for the investigation of fluctuations and pattern-formation in miscible fluids. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2019; 90:085109. [PMID: 31472663 DOI: 10.1063/1.5112778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 08/05/2019] [Indexed: 06/10/2023]
Abstract
We describe a flowing-junction cell with cylindrical symmetry suitable to investigate fluctuations and pattern formation at the diffusing interface between two miscible phases of a liquid mixture. The continuous outflow of the remixed fluid through a thin slit located at the midheight of the sample allows the preparation of an initially sharp interface. The system can be used in both gravity-stable and unstable conditions. In the stable case, the denser liquid is on the bottom of the cell and mass diffusion is the only active process for remixing the two liquids. Once the flow is stopped, one can investigate nonequilibrium fluctuations during free-diffusion in a binary mixture or double diffusive instabilities in multicomponent mixtures. Two horizontal transparent windows allow vertical mapping of the fluid flow by using shadowgraphy. In the unstable condition, with the denser fluid on top, stopping the radial flow at the interface gives rise to a Rayleigh-Taylor instability, which drives the denser liquid toward the bottom of the cell. The fact that the cell can maintain the system in the unstable condition shows that it is suitable to perform experiments under microgravity conditions. With respect to other free-diffusion cells, the proposed configuration has the advantage that the interface is extremely stable and flat, and that the experiments can be repeated by just flowing the cell with fresh liquids.
Collapse
Affiliation(s)
- Fabrizio Croccolo
- Laboratoire des Fluides Complexes et leurs Réservoirs (LFCR), IPRA, UMR5150 E2S-Univ Pau & Pays Adour, CNRS, TOTAL, 64600 Anglet, France
| | - Doriano Brogioli
- Universität Bremen, Energiespeicher-und Energiewandlersysteme, Bibliothekstraße 1, 28359 Bremen, Germany
| | - Alberto Vailati
- Dipartimento di Fisica Aldo Pontremoli, Università degli Studi di Milano, I-20133, Milano, Italy
| |
Collapse
|
3
|
Kozlova S, Mialdun A, Ryzhkov I, Janzen T, Vrabec J, Shevtsova V. Do ternary liquid mixtures exhibit negative main Fick diffusion coefficients? Phys Chem Chem Phys 2019; 21:2140-2152. [DOI: 10.1039/c8cp06795c] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Measured main Fick diffusion coefficients are throughout positive. However, they may appear to be negative after transformation to the molar reference frame, if the excess volume is significant and the experimental uncertainties of the cross diffusion coefficients are large.
Collapse
Affiliation(s)
- S. Kozlova
- Institute of Computational Modelling SB RAS
- Krasnoyarsk
- Russia
| | - A. Mialdun
- Microgravity Research Center
- Université Libre de Bruxelles (ULB)
- 50, B-1050 Brussels
- Belgium
| | - I. Ryzhkov
- Institute of Computational Modelling SB RAS
- Krasnoyarsk
- Russia
- Siberian Federal University
- Krasnoyarsk
| | - T. Janzen
- Thermodynamics and Process Engineering
- Technical University Berlin
- 10587 Berlin
- Germany
| | - J. Vrabec
- Thermodynamics and Process Engineering
- Technical University Berlin
- 10587 Berlin
- Germany
| | - V. Shevtsova
- Microgravity Research Center
- Université Libre de Bruxelles (ULB)
- 50, B-1050 Brussels
- Belgium
| |
Collapse
|
4
|
Effect of cross-diffusion on the gravitational instability in a ternary mixture: Asymptotic and linear analyses. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2018.06.071] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
5
|
Janzen T, Zhang S, Mialdun A, Guevara-Carrion G, Vrabec J, He M, Shevtsova V. Mutual diffusion governed by kinetics and thermodynamics in the partially miscible mixture methanol + cyclohexane. Phys Chem Chem Phys 2018; 19:31856-31873. [PMID: 29171844 DOI: 10.1039/c7cp06515a] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To gain an understanding of the transport and thermodynamic behavior of the highly non-ideal mixture methanol + cyclohexane, three complementary approaches, i.e. experiment, molecular simulation and predictive equations, are employed. The temperature and composition dependence of different diffusion coefficients is studied around the miscibility gap at ambient pressure. On the one hand Fick diffusion coefficients are measured experimentally by interferometric probing and on the other hand Maxwell-Stefan diffusion coefficients and intradiffusion coefficients are sampled by equilibrium molecular dynamics simulation at five temperatures below the upper critical temperature of ∼319 K. The spinodal curve is determined from extrapolation of the experimental Fick diffusion coefficient data and compared to predictions from excess Gibbs energy models. It is found that these models are not capable to correctly describe the activity coefficients over the whole composition range of the studied mixture. Thus, different parameter sets for a modified Wilson model are used for calculations of the thermodynamic factor, which is needed to transform Maxwell-Stefan into Fick diffusion coefficients and vice versa. Further, predictive equations for the Maxwell-Stefan diffusion coefficient, which are based on intradiffusion coefficients, are compared to simulation results. Using different approaches provides a clearer understanding of the relations between kinetic and thermodynamic properties contributing to the diffusion behavior of partially miscible mixtures.
Collapse
Affiliation(s)
- Tatjana Janzen
- Thermodynamics and Energy Technology, University of Paderborn, 33098 Paderborn, Germany.
| | | | | | | | | | | | | |
Collapse
|
6
|
Lapeira E, Gebhardt M, Triller T, Mialdun A, Köhler W, Shevtsova V, Bou-Ali MM. Transport properties of the binary mixtures of the three organic liquids toluene, methanol, and cyclohexane. J Chem Phys 2017. [DOI: 10.1063/1.4977078] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- E. Lapeira
- Mechanical and Manufacturing Department, MGEP Mondragon Goi Eskola Politeknikoa, Loramendi 4 Apdo. 23, 20500 Mondragon, Spain
| | - M. Gebhardt
- Physikalisches Institut, Universität Bayreuth, D-95440 Bayreuth, Germany
| | - T. Triller
- Physikalisches Institut, Universität Bayreuth, D-95440 Bayreuth, Germany
| | - A. Mialdun
- MRC, CP165/62, Université Libre de Bruxelles, Ave. F.D. Roosevelt, 50, B-1050 Brussels, Belgium
| | - W. Köhler
- Physikalisches Institut, Universität Bayreuth, D-95440 Bayreuth, Germany
| | - V. Shevtsova
- MRC, CP165/62, Université Libre de Bruxelles, Ave. F.D. Roosevelt, 50, B-1050 Brussels, Belgium
| | - M. M. Bou-Ali
- Mechanical and Manufacturing Department, MGEP Mondragon Goi Eskola Politeknikoa, Loramendi 4 Apdo. 23, 20500 Mondragon, Spain
| |
Collapse
|
7
|
Bataller H, Triller T, Pur B, Köhler W, Ortiz de Zárate JM, Croccolo F. Dynamic analysis of the light scattered by the non-equilibrium fluctuations of a ternary mixture of polystyrene-toluene-n-hexane. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2017; 40:35. [PMID: 28352991 DOI: 10.1140/epje/i2017-11522-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 03/01/2017] [Indexed: 06/06/2023]
Abstract
Dynamic analysis of the light scattered by non-equilibrium fluctuations in a thermodiffusion experiment has been performed on a sample of polystyrene-toluene-n -hexane, at 0.9-49.55-49.55% mass fraction. Time decays of the non-equilibrium fluctuations have been obtained revealing the accurate detectability of three modes. The slowest mode has been attributed to the mass diffusion of the polymer into the binary solvent; the intermediate one to mass diffusion of the two molecular components of the solvent; finally, the fastest one has been attributed to the thermal diffusivity of the overall mixture. The two eigenvalues of the mass diffusion matrix have been evaluated with accuracy in the order of 1%. Neglecting cross-diffusion effects we obtain a simplified expression for the relative amplitude of the two mass diffusion modes, allowing a parameterized determination of polystyrene and toluene Soret coefficients in the ternary mixture. We suggest that a two wavelength shadowgraph experiment is needed for a complete determination of all the coefficients.
Collapse
Affiliation(s)
- Henri Bataller
- Univ Pau & Pays Adour, CNRS, TOTAL, LFCR-IPRA, UMR5150, 1 Allée du Parc Montaury, 64600, Anglet, France.
| | - Thomas Triller
- Physikalisches Institut, Universität Bayreuth, D-95440, Bayreuth, Germany
| | - Bastian Pur
- Physikalisches Institut, Universität Bayreuth, D-95440, Bayreuth, Germany
| | - Werner Köhler
- Physikalisches Institut, Universität Bayreuth, D-95440, Bayreuth, Germany
| | | | - Fabrizio Croccolo
- Univ Pau & Pays Adour, CNRS, TOTAL, LFCR-IPRA, UMR5150, 1 Allée du Parc Montaury, 64600, Anglet, France
- Centre National d'Etudes Spatiales (CNES), 2, Place Maurice Quentin, 75001, Paris, France
| |
Collapse
|
8
|
Larrañaga M, Bou-Ali MM, Lapeira E, Lizarraga I, Santamaría C. Thermodiffusion, molecular diffusion and Soret coefficients of aromatic+n-alkane binary mixtures. J Chem Phys 2016; 145:134503. [PMID: 27782414 DOI: 10.1063/1.4964298] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
In the present work, we have measured the thermodiffusion coefficient of 51 binary liquid mixtures at 25 oC. These mixtures correspond to the series of the aromatics toluene and 1-methylnaphthalene with n-alkanes nCi (i = 6, 8, 10, 12, and 14) at different mass fractions in the whole range. For that, we have used the thermogravitational technique. It is shown that the thermodiffusion coefficient is a linear function of the mass fraction in all the mixtures. Extrapolating the lines, we obtain the thermodiffusion coefficient in dilute solutions of n-alkanes for both toluene and 1-methylnaphthalene. These limiting values show a linear dependence with the inverse of the product of the molecular weights. In addition, we have measured the molecular diffusion coefficient of all the mixtures at 0.5 of mass fraction and at 25 oC, by the sliding symmetric tubes technique. It is observed that the product of this coefficient with the viscosity at the same concentrations takes a constant value for each of the series considered. Finally, we have also determined the Soret coefficient of the equimass mixtures by the combination of the measurements of thermodiffusion and molecular diffusion coefficients.
Collapse
Affiliation(s)
- Miren Larrañaga
- MGEP Mondragon Goi Eskola Politeknikoa, Mechanical and Industrial Manufacturing Department, Loramendi 4 Apdo. 23, Mondragon 20500, Spain
| | - M Mounir Bou-Ali
- MGEP Mondragon Goi Eskola Politeknikoa, Mechanical and Industrial Manufacturing Department, Loramendi 4 Apdo. 23, Mondragon 20500, Spain
| | - Estela Lapeira
- MGEP Mondragon Goi Eskola Politeknikoa, Mechanical and Industrial Manufacturing Department, Loramendi 4 Apdo. 23, Mondragon 20500, Spain
| | - Ion Lizarraga
- MGEP Mondragon Goi Eskola Politeknikoa, Mechanical and Industrial Manufacturing Department, Loramendi 4 Apdo. 23, Mondragon 20500, Spain
| | - Carlos Santamaría
- Department of Applied Physics II, University of Basque Country, Apdo. 644, Bilbao 48080, Spain
| |
Collapse
|
9
|
Larabi MA, Mutschler D, Mojtabi A. Thermal gravitational separation of ternary mixturen-dodecane/isobutylbenzene/tetralin components in a porous medium. J Chem Phys 2016; 144:244902. [DOI: 10.1063/1.4954244] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
10
|
Legros JC, Gaponenko Y, Mialdun A, Triller T, Hammon A, Bauer C, Köhler W, Shevtsova V. Investigation of Fickian diffusion in the ternary mixtures of water-ethanol-triethylene glycol and its binary pairs. Phys Chem Chem Phys 2016; 17:27713-25. [PMID: 26434813 DOI: 10.1039/c5cp04745e] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present a comprehensive experimental study of isothermal Fickian diffusion in the ternary and binary liquid mixtures of water, ethanol, and triethylene glycol over the entire ternary composition space. 21 ternary mixtures inside the composition triangle have been investigated by means of the Taylor dispersion technique and 30 binary mixtures by Taylor dispersion and/or optical beam deflection in a Soret cell. The scalar binary diffusion coefficient has been determined along all three binary boundaries of the composition space and compared with estimations based on the Stokes-Einstein relation using stick or slip boundary conditions. The four elements of the ternary diffusion matrix and the diffusion eigenvalues were determined over a large portion of the composition triangle. The pseudo-binary diffusion coefficients obtained in Taylor dispersion experiments with either one of the two independent concentrations kept constant are comparable to the two diffusion eigenvalues. One of the two off-diagonal elements of the diffusion matrix is of the same order as the diagonal ones and, hence, not negligible, whereas the other one is approximately one order of magnitude smaller. Where available, our results compare well with literature data. The investigated compositions also comprise the five compositions that are scheduled for microgravity experiments in the ESA DCMIX3 project.
Collapse
Affiliation(s)
- J C Legros
- Microgravity Research Center, Université Libre de Bruxelles (ULB), CP-165/62, Av. F.D. Roosevelt, 50, B-1050 Brussels, Belgium.
| | | | | | | | | | | | | | | |
Collapse
|
11
|
Larrañaga M, Bou-Ali MM, Lizarraga I, Madariaga JA, Santamaría C. Soret coefficients of the ternary mixture 1,2,3,4-tetrahydronaphthalene + isobutylbenzene + n-dodecane. J Chem Phys 2015; 143:024202. [PMID: 26178098 DOI: 10.1063/1.4926654] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In this work, the transport coefficients of the ternary mixtures of the diffusion coefficient measurements in ternary mixtures 1 project were determined. The analyzed ternary mixtures are formed by 1,2,3,4-tetrahydronaphthalene, isobutylbenzene, and dodecane (nC12) at different compositions. In all cases, the analysis was carried out at 25 °C. The thermodiffusion coefficients were measured by a new thermogravitational column, and the molecular diffusion coefficients were determined by the sliding symmetric tubes technique. Finally, the Soret coefficients were ascertained from the measurements of the thermodiffusion and molecular diffusion coefficients. In addition, two new quantitative correlations which enable the prediction of the thermodiffusion and Soret coefficients of a ternary mixture are presented. The comparison between the experimental and the predicted data shows a good agreement. The presented results help to complete the lack of experimental data in ternary mixtures. In addition, this work improves the fundamental understanding of multicomponent mixtures.
Collapse
Affiliation(s)
- Miren Larrañaga
- MGEP Mondragon Goi Eskola Politeknikoa, Mechanical and Industrial Manufacturing Department, Loramendi 4 Apdo. 23, 20500 Mondragon, Spain
| | - M Mounir Bou-Ali
- MGEP Mondragon Goi Eskola Politeknikoa, Mechanical and Industrial Manufacturing Department, Loramendi 4 Apdo. 23, 20500 Mondragon, Spain
| | - Ion Lizarraga
- MGEP Mondragon Goi Eskola Politeknikoa, Mechanical and Industrial Manufacturing Department, Loramendi 4 Apdo. 23, 20500 Mondragon, Spain
| | - Jose Antonio Madariaga
- Department of Applied Physics II, University of Basque Country, Apdo. 644, 48080 Bilbao, Spain
| | - Carlos Santamaría
- Department of Applied Physics II, University of Basque Country, Apdo. 644, 48080 Bilbao, Spain
| |
Collapse
|
12
|
Mialdun A, Legros JC, Yasnou V, Sechenyh V, Shevtsova V. Contribution to the benchmark for ternary mixtures: Measurement of the Soret, diffusion and thermodiffusion coefficients in the ternary mixture THN/IBB/nC12 with 0.8/0.1/0.1 mass fractions in ground and orbital laboratories. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2015; 38:27. [PMID: 25916232 DOI: 10.1140/epje/i2015-15027-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 11/05/2014] [Accepted: 02/03/2015] [Indexed: 06/04/2023]
Abstract
We have determined the Soret (ST), diffusion (D, and thermodiffusion (DT) coefficients in a ternary mixture of tetralin-isobutylbenzene-n-dodecane with a composition of 0.80/0.10/0.10 by mass fraction at a temperature of 298K. The Soret coefficients were measured in the microgravity experiment DCMIX1 and on the ground by optical digital interferometry (ODI) using two lasers with different wavelengths. The values of the Soret coefficients were determined from the stationary separation of the components using two- and six-parameter fits. The diffusion coefficients were independently measured using the Taylor Dispersion Technique in the ground laboratory, and the thermodiffusion coefficients were derived from known ST and matrix D. The processing of the data from the DCMIX experiment conducted on the International Space Station is discussed in detail. The multi-user design of the on-board instrument causes perturbations in the component separation. Several recommendations are suggested for improving the quality of the microgravity results. For example, we demonstrated that the tomography reconstruction of the 3-D concentration field allows to restore the underestimated component separation resulting from the spatial non-linearity of the temperature field. Furthermore, to avoid errors in component separation due to mass exchange between the working liquid volume and the expansion volume at the top of the cell, we suggest considering the evolution of the separation only in the lower half of the cell. The results of this study displayed reasonable quantitative agreement between the microgravity and ground experiments.
Collapse
Affiliation(s)
- A Mialdun
- MRC, Université Libre de Bruxelles (ULB), av. F. Roosevelt, 50, Brussels, Belgium,
| | | | | | | | | |
Collapse
|
13
|
Larrañaga M, Bou-Ali MM, de Mezquıa DA, Rees DAS, Madariaga JA, Santamaría C, Platten JK. Contribution to the benchmark for ternary mixtures: Determination of Soret coefficients by the thermogravitational and the sliding symmetric tubes techniques. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2015; 38:28. [PMID: 25916234 DOI: 10.1140/epje/i2015-15028-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 11/17/2014] [Accepted: 02/12/2015] [Indexed: 06/04/2023]
Abstract
This work is part of an international project for the research on the transport properties in ternary mixtures. Six different teams have analysed the same mixture by independent techniques in order to compare the results and validate the techniques. This work is the contribution of the team of Mondragon Unibertsitatea for ground conditions measurements. This team has measured the thermodiffusion coefficients by the thermogravitational techniques and the molecular diffusion coefficients by the Sliding Symmetric Tubes technique. The Soret coefficients have been determined by the combination of the thermodiffusion and molecular diffusion coefficients. The mixture chosen for the study is the one formed by 1,2,3,4-tetrahydronaphtalene, isobutylbenzene and n-dodecane at mass fraction of 80% of THN, 10% of IBB and 10% of n C12, and at 25°C. The good agreement between the results of the different teams shows the validity of the techniques used in this work.
Collapse
Affiliation(s)
- Miren Larrañaga
- Mechanical and Industrial Manufacturing Department, MGEP Mondragon Goi Eskola Politeknikoa, Loramendi 4 Apdo 23, 20500, Mondragon, Spain
| | | | | | | | | | | | | |
Collapse
|
14
|
Galand Q, Van Vaerenbergh S. Contribution to the benchmark for ternary mixtures: Measurement of diffusion and Soret coefficients of ternary system tetrahydronaphtalene-isobutylbenzene-n-dodecane with mass fractions 80-10-10 at 25 °C. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2015; 38:26. [PMID: 25916231 DOI: 10.1140/epje/i2015-15026-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 11/19/2014] [Accepted: 02/03/2015] [Indexed: 06/04/2023]
Abstract
This paper provides the molecular diffusion and Soret coefficients of the ternary system 1,2,3,4-tetrahydronaphtalene, isobutylbenzene, n -dodecane system at mass fractions 0.8-0.1-0.1 and temperature 25 (°)C for implementation into the benchmark presented in this topical issue. The Soret coefficients are determined by digital interferometry using the data of DSC-DCMIX microgravity experiment. The method used takes into account the influence of the thermal field on the Soret separations and the selection of the image processing techniques results in reproducible Soret coefficients.The diffusion coefficients are obtained by the Open Ended Capillary technique The fitting of the data collected through a set of two complementary experimental runs allows retrieving the four Fickian diffusion coefficients.
Collapse
Affiliation(s)
- Quentin Galand
- Microgravity Research Center, Université libre de Bruxelles, Dept. Chemical Physics, Avenue F. D. Roosevelt, B-1050, Brussels, Belgium,
| | | |
Collapse
|
15
|
Bou-Ali MM, Ahadi A, Alonso de Mezquia D, Galand Q, Gebhardt M, Khlybov O, Köhler W, Larrañaga M, Legros JC, Lyubimova T, Mialdun A, Ryzhkov I, Saghir MZ, Shevtsova V, Van Vaerenbergh S. Benchmark values for the Soret, thermodiffusion and molecular diffusion coefficients of the ternary mixture tetralin+isobutylbenzene+n-dodecane with 0.8-0.1-0.1 mass fraction. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2015; 38:30. [PMID: 25916233 DOI: 10.1140/epje/i2015-15030-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 11/06/2014] [Accepted: 02/17/2015] [Indexed: 06/04/2023]
Abstract
With the aim of providing reliable benchmark values, we have measured the Soret, thermodiffusion and molecular diffusion coefficients for the ternary mixture formed by 1,2,3,4-tetrahydronaphthalene, isobutylbenzene and n-dodecane for a mass fraction of 0.8-0.1-0.1 and at a temperature of 25°C. The experimental techniques used by the six participating laboratories are Optical Digital Interferometry, Taylor Dispersion technique, Open Ended Capillary, Optical Beam Deflection, Thermogravitational technique and Sliding Symmetric Tubes technique in ground conditions and Selectable Optical Diagnostic Instrument (SODI) in microgravity conditions. The measurements obtained in the SODI installation have been analyzed independently by four laboratories. Benchmark values are proposed for the thermodiffusion and Soret coefficients and for the eigenvalues of the diffusion matrix in ground conditions, and for Soret coefficients in microgravity conditions.
Collapse
Affiliation(s)
- M M Bou-Ali
- Mechanical and Industrial Manufacturing Department, MGEP Mondragon Goi Eskola Politeknikoa, Loramendi 4 Apdo 23, 20500, Mondragon, Spain,
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|