Optical measurement of the Soret coefficient and the diffusion coefficient of liquid mixtures

1996 ◽  
Vol 104 (17) ◽  
pp. 6881-6892 ◽  
Author(s):  
K. J. Zhang ◽  
M. E. Briggs ◽  
R. W. Gammon ◽  
J. V. Sengers
Keyword(s):  
Diffusion Coefficient ◽  
Optical Measurement ◽  
Liquid Mixtures ◽  
Soret Coefficient

The Soret Effect: A Review of Recent Experimental Results

2005 ◽  
Vol 73 (1) ◽  
pp. 5-15 ◽  
Author(s):  
Jean K. Platten
Keyword(s):  
Rayleigh Scattering ◽  
Soret Effect ◽  
Organic Liquid ◽  
Oil Industry ◽  
Liquid Mixtures ◽  
Beam Deflection ◽  
Soret Coefficient ◽  
Onset Of Convection ◽  
New Techniques ◽  
Scattering Technique

In the first part of the paper, we recall what the Soret effect is, together with its applications in science and industry. We emphasize the need to have a reliable data base for the Soret coefficient. Next we review the different techniques to measure the Soret coefficient (elementary Soret cell, beam deflection technique, thermal diffusion forced Rayleigh scattering technique, convective coupling and, in particular, the onset of convection in horizontal layers and the thermogravitational method). Results are provided for several systems, with both negative and positive Soret coefficients, and comparison between several laboratories are made for the same systems. We end with “benchmark” values of the Soret coefficient for some organic liquid mixtures of interest in the oil industry and to which all future new techniques should refer before gaining confidence. We conclude that correct values of the Soret coefficient can be obtained in earth conditions and we deny the need to go to microgravity.

scholarly journals Experimental measurement of Soret coefficient and numerical study on effect of g-jitter in liquid mixtures

2021 ◽  
Author(s):  
Pouyan Ezzatian
Keyword(s):  
Experimental Measurement ◽  
Numerical Study ◽  
Liquid Mixtures ◽  
Soret Coefficient

Experimental measurement of Soret coefficient and numerical study on effect of g-jitter in liquid mixtures

scholarly journals Experimental measurement of Soret coefficient and numerical study on effect of g-jitter in liquid mixtures

2021 ◽  
Author(s):  
Pouyan Ezzatian
Keyword(s):  
Experimental Measurement ◽  
Numerical Study ◽  
Liquid Mixtures ◽  
Soret Coefficient

Experimental measurement of Soret coefficient and numerical study on effect of g-jitter in liquid mixtures

Optical measurement of the Soret coefficient of ethanol/water solutions

1988 ◽  
Vol 88 (10) ◽  
pp. 6512-6524 ◽  
Author(s):  
Paul Kolodner ◽  
Hugh Williams ◽  
Cheryl Moe
Keyword(s):  
Optical Measurement ◽  
Soret Coefficient ◽  
Water Solutions

The mutual diffusion coefficient of ethanol–water mixtures: determination by a rapid, new method

1974 ◽  
Vol 336 (1606) ◽  
pp. 393-406 ◽  
Keyword(s):  
Experimental Data ◽  
Diffusion Coefficient ◽  
Laminar Flow ◽  
Diffusion Coefficients ◽  
Entire Range ◽  
Liquid Mixtures ◽  
Mutual Diffusion ◽  
Mutual Diffusion Coefficient ◽  
Mechanical Theory ◽  
Statistical Mechanical

Mutual diffusion coefficients for liquid mixtures of ethanol and water have been measured over the entire range of composition and for temperatures from 25 to 65 °C at a pressure of 1 bar (10 5 Pa). At the lowest temperature, the results establish the validity of a new experimental method based upon Taylor’s analysis of solute dispersion in laminar flow. The method offers advantages of simplicity and speed over other techniques, and allows direct measurement of diffusion coefficients at well-defined mixture compositions. The experimental data have an estimated uncertainty of ±2.5% . The results have been utilized to evaluate friction coefficients arising in the statistical mechanical theory of transport in liquid mixtures.

Diffusion in Binary Nonelectrolyte Solutions

1980 ◽  
Vol 35 (10) ◽  
pp. 1116-1117
Author(s):  
R. Haase ◽  
H.-J. Jansen
Keyword(s):  
Experimental Data ◽  
Diffusion Coefficient ◽  
Ideal Liquid ◽  
Liquid Mixtures ◽  
Liquid System ◽  
Recent Experimental Data ◽  
Thermodynamic Factor ◽  
Binary Liquid ◽  
System Water ◽  
The Ideal

Abstract For binary liquid mixtures of nonelectrolytes, we consider the dependence of the diffusion coefficient on composition and temperature, making use of an analytical expression for the kinematic diffusion coefficient (diffusion coefficient divided by thermodynamic factor). We present recent experimental data for the ideal liquid system chlorobenzene + bromobenzene and for the non-ideal liquid system water -f methanol as well as literature data for other non-ideal mixtures.

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