Soret and mass diffusion coefficients of toluene/n-hexane mixtures

Köhler, W.; Müller, B.
September 1995
Journal of Chemical Physics;9/8/1995, Vol. 103 Issue 10, p4367
Academic Journal
Soret coefficients and mass diffusion coefficients of mixtures of toluene and n-hexane have been measured by thermal diffusion forced Rayleigh scattering (TDFRS) and are compared with literature data. For the mass diffusion coefficients a good agreement between different experimental techniques is found. For the Soret coefficients contradictory results are obtained from thermogravitational column measurements, small angle Rayleigh scattering, and TDFRS. Arguments supporting the TDFRS data are presented. © 1995 American Institute of Physics.


Related Articles

  • Thermal diffusion behavior of hard-sphere suspensions. Ning, Hui; Buitenhuis, Johan; Dhont, Jan K. G.; Wiegand, Simone // Journal of Chemical Physics;11/28/2006, Vol. 125 Issue 20, p204911 

    We studied the thermal diffusion behavior of octadecyl coated silica particles (Rh=27 nm) in toluene between 15.0 and 50.0 °C in a volume fraction range of 1%–30% by means of thermal diffusion forced Rayleigh scattering. The colloidal particles behave like hard spheres at high...

  • Measurement of the thermal diffusivity of liquids by the forced Rayleigh scattering method: Theory and experiment. Nagasaka, Y.; Hatakeyama, T.; Okuda, M.; Nagashima, A. // Review of Scientific Instruments;Jul1988, Vol. 59 Issue 7, p1156 

    This article is devoted to the theory and experiment of the forced Rayleigh scattering method for measurement of thermal diffusivity of liquids which can be employed in the form of an instrument operated optically in a contact-free manner. The theoretical considerations included are: (1) effect...

  • Phase-coherent Rayleigh scattering method: Application to thermal diffusion mode. Takagi, Shinsaku; Tanaka, Hajime // Review of Scientific Instruments;Sep2002, Vol. 73 Issue 9, p3337 

    We develop a method of phase-coherent light scattering, which provides "complex" spectra of Rayleigh scattering from a thermal diffusion mode in isotropic liquids. Different from the conventional light scattering methods, which measure the power spectrum of light scattered by spontaneously...

  • Thermodiffusion, molecular diffusion and Soret coefficient of binary and ternary mixtures of n-hexane, n-dodecane and toluene. Alonso de Mezquia, David; Wang, Zilin; Lapeira, Estela; Klein, Michael; Wiegand, Simone; Mounir Bou-Ali, M. // European Physical Journal E -- Soft Matter;Nov2014, Vol. 37 Issue 11, p1 

    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 298.15 K and 308.15 K have been determined. The experimental...

  • Experimental and molecular dynamics study of depolarized Rayleigh scattering by O2. Zerda, T. W.; Song, X.; Jonas, J.; Ladanyi, B. M.; Geiger, L. C. // Journal of Chemical Physics;7/15/1987, Vol. 87 Issue 2, p840 

    Collision-induced effects on depolarized Rayleigh scattering (DRS) in gaseous oxygen at 300 K in the pressure range from 10 to 3000 bar have been studied experimentally. DRS spectra for four thermodynamic states at this temperature and in the pressure range from 130 to 3000 bar have also been...

  • Anharmonic forced Rayleigh scattering: A technique for study of saturated absorption in liquids. McGraw, Daniel J.; Michaelson, Jeffrey; Harris, Joel M. // Journal of Chemical Physics;3/1/1987, Vol. 86 Issue 5, p2536 

    The technique of anharmonic forced Rayleigh scattering is developed and applied to the study of saturated absorption in liquids. Isobaric heating following saturated absorption at a crossed beam interference pattern creates an anharmonic transient thermal grating containing harmonics of the...

  • Higher order interaction-induced effects on Rayleigh light scattering by molecular liquids. Geiger, Lynn C.; Ladanyi, Branka M. // Journal of Chemical Physics;7/1/1987, Vol. 87 Issue 1, p191 

    Molecular dynamics (MD) computer simulation was used to study Rayleigh light scattering (LS) in oxygen and carbon disulfide liquids. Results are presented for one thermodynamic state of oxygen (82 K, 1.215 g/cm3) and two thermodynamic states of CS2 (193K, 1.42 g/cm3 and 293 K, 1.30 g/cm3). The...

  • Structure and dynamics of high-pressure TIP4P water. Reddy, M. Rami; Berkowitz, M. // Journal of Chemical Physics;12/1/1987, Vol. 87 Issue 11, p6682 

    Constant temperature molecular dynamics (N, V, T ensemble) is performed on 216 TIP4P water molecules at T=268 and 298 K and densities ρ=0.999, 1.083, and 1.149 g/cc. The main structural effect from the increase of the density is found to be, at both temperatures, weakening of tetrahedral...

  • Thermally induced sign change of Soret coefficient for dilute and semidilute solutions of poly(N-isopropylacrylamide) in ethanol. Kita, Rio; Kircher, Gunnar; Wiegand, Simone // Journal of Chemical Physics;11/8/2004, Vol. 121 Issue 18, p9140 

    We studied the thermal diffusion behavior of poly(N-isopropylacrylamide) (PNiPAM) in ethanol in a temperature range from T=14.0 °C to T=40.0 °C by means of thermal diffusion forced Rayleigh scattering. The obtained Soret coefficient ST of PNiPAM was positive for lower temperatures (T<34...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics