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00925njm 22002777a 4500 dc Larrañaga, Miren author Bou-Ali, M. Mounir author Lapeira, Estela author Lizarraga Lizarraga, Jon author Santamaría, Carlos author 2016 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. 0021-9606 https://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=125009 https://hdl.handle.net/20.500.11984/13954 Molecular dynamics Nonequilibrium thermodynamics Thermal effects ODS 6 Agua limpia y saneamiento ODS 9 Industria, innovación e infraestructura Thermodiffusion, molecular diffusion and Soret coefficients of aromatic+n-alkane binary mixtures