Coupled ion–interface dynamics and ion transfer across the interface of two immiscible liquids

Coupled ion–interface dynamics and ion transfer across the interface of two immiscible liquids

When an ion moves across the interface of two immiscible electrolytes it moves together with the ion-induced protrusion of one solvent into the other. For an infinitely slow motion of an ion the height of the protrusion, heq , is a function of the position of the ion z. Due to a finite relaxation time the protrusion may not be able to spontaneously follow the motion of the ion, and this will ca...

On the theory of ion transfer rates across the interface of two immiscible liquids

Ion transfer across the interface of two immiscible liquids involves a mechanism for initiating desolvation from the first liquid, A, and concerted solvation by the second, B. In the present article a mechanism is considered in which this initiation is facilitated by the ion attaching itself to the tip of a solvent protrusion of B into A. ~Protrusions have been observed in computer simulations ...

Dean vortices-induced enhancement of mass transfer through an interface separating two immiscible liquids

Two-fluid Dean vortex flow in a coiled pipe with vanishing torsion, and its effect on the mass transfer through the liquid–liquid interface of two immiscible fluids are studied numerically. The liquids are stratified by gravity, with the denser one occupying the lower part of the pipe. The Navier–Stokes equations in both fluid layers are solved numerically by the finite volume method. The resul...

Ion transfer across the water|trifluorotoluene interface

Convection-induced enhancement of mass transfer through an interface separating two immiscible liquids in a two-layer horizontal annulus

Two-fluid natural-convection flow in the horizontal cylindrical annulus and its effect on mass transfer through the liquid-liquid interface of two immiscible fluids are studied numerically. The liquids are stratified by gravity, with the denser one occupying the lower part of the annulus. The convective motion is driven by heating of the inner or outer cylindrical boundary. It is shown that the...