On the Importance of Choosing the Best Minimization Algorithm for the Determination of Ternary Diffusion Coefficients by the Taylor Dispersion Method

Abstract We reported experimental measurements of the diffusion coefficient of methane at effectively infinite dilution in methylbenzene and in heptane at temperatures ranging from (323 to 398) K and at pressures up to 65 MPa. The Taylor dispersion method was used and the overall combined standard relative uncertainty was 2.3%. The experimental diffusion coefficients were correlated with a simple empirical model as well as the Stokes–Einstein model with the effective hydrodynamic radius of methane depending linearly upon the solvent density. The new data address key gaps in the literature and may facilitate the development of an improved predictive model for the diffusion coefficients of dilute gaseous solutes in hydrocarbon liquids.

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Ternary Diffusion Coefficients of Cyclohexane + Toluene + Methanol by Taylor Dispersion Measurements at 298.15 K. Part 1. Toluene-Rich Area†

Journal of Chemical & Engineering Data ◽

10.1021/je800444e ◽

2009 ◽

Vol 54 (2) ◽

pp. 405-410 ◽

Cited By ~ 27

Author(s):

Thomas Grossmann ◽

Jochen Winkelmann

Keyword(s):

Diffusion Coefficients ◽

Taylor Dispersion ◽

Ternary Diffusion ◽

Ternary Diffusion Coefficients

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Comparison of ternary diffusion coefficients obtained from dynamic light scattering and Taylor dispersion

Fluid Phase Equilibria ◽

10.1016/j.fluid.2004.09.019 ◽

2005 ◽

Vol 228-229 ◽

pp. 283-291 ◽

Cited By ~ 19

Author(s):

D.A. Ivanov ◽

Th. Grossmann ◽

J. Winkelmann

Keyword(s):

Light Scattering ◽

Dynamic Light Scattering ◽

Diffusion Coefficients ◽

Taylor Dispersion ◽

Ternary Diffusion ◽

Ternary Diffusion Coefficients

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Measurements of binary diffusion coefficients for metal complexes in organic solvents by the Taylor dispersion method

Fluid Phase Equilibria ◽

10.1016/j.fluid.2010.06.003 ◽

2010 ◽

Vol 297 (1) ◽

pp. 62-66 ◽

Cited By ~ 29

Author(s):

Minoru Toriumi ◽

Ryohei Katooka ◽

Kazuko Yui ◽

Toshitaka Funazukuri ◽

Chang Yi Kong ◽

...

Keyword(s):

Metal Complexes ◽

Organic Solvents ◽

Diffusion Coefficients ◽

Taylor Dispersion ◽

Dispersion Method ◽

Binary Diffusion ◽

Taylor Dispersion Method ◽

Binary Diffusion Coefficients

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Multicomponent diffusion of interacting, nonionic micelles with hydrophobic solutes

Soft Matter ◽

10.1039/d0sm01406k ◽

2021 ◽

Author(s):

Nathan P. Alexander ◽

Ronald J. Phillips ◽

Stephanie R. Dungan

Keyword(s):

Hard Sphere ◽

Multicomponent Diffusion ◽

Taylor Dispersion ◽

Micellar Solutions ◽

Dispersion Method ◽

Ternary Diffusion ◽

Gradient Diffusion ◽

Taylor Dispersion Method ◽

Hydrophobic Solutes ◽

Sphere Suspensions

Rigorous theory for gradient diffusion in hard-sphere suspensions is adapted to locally monodisperse, nonionic micellar solutions with solute, and effectively used to predict ternary diffusion matrices [D] acquired using the Taylor dispersion method.

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Ternary mutual diffusion coefficients of MgCl2 + MgSO4 + H2O and Na2SO4 + MgSO4 + H2O from Taylor dispersion profiles

Canadian Journal of Chemistry ◽

10.1139/v91-229 ◽

1991 ◽

Vol 69 (10) ◽

pp. 1548-1553 ◽

Cited By ~ 47

Author(s):

Zhipeng Deng ◽

Derek G. Leaist

Keyword(s):

Diffusion Coefficients ◽

Multicomponent Diffusion ◽

Taylor Dispersion ◽

Mutual Diffusion ◽

Salt Solutions ◽

Mixed Salt ◽

Ternary Diffusion ◽

Peak Broadening ◽

Ternary Diffusion Coefficients ◽

Mixed Salt Solutions

The Taylor dispersion (peak-broadening) technique is used to measure the ternary mutual diffusion coefficients of the mixed salt solutions MgCl2 + MgSO4 + H2O and Na2SO4 + MgSO4 + H2O at 25 °C. The dispersion of the solutes is followed by differential refractometry. A simple least-squares procedure is developed to calculate the ternary diffusion coefficients from the refractive index profiles. The coefficients are measured at 0.04, 0.20, or 0.40 mol dm−3 total salt for the molar salt ratios 1:3, 1:1, or 3:1. The measured diffusion coefficients are compared with the limiting values for the completely dissociated salts. Key words: mixed salt solutions, multicomponent diffusion, Taylor dispersion, ternary diffusion coefficients.

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