Can I read Selective permeability of a perfluorosulphonic membrane to different valency cations. Ion-exchange isotherms and kinetic aspects on EtoBox?

Selective permeability of a perfluorosulphonic membrane to different valency cations. Ion-exchange isotherms and kinetic aspects by Sébastien Logette; Catherine Eysseric; Gérald Pourcelly; Arlette Lindheimer; Claude Gavach is a Engineering article available to read on EtoBox.

What is Selective permeability of a perfluorosulphonic membrane to different valency cations. Ion-exchange isotherms and kinetic aspects about?

Transport competition between protons and Ag , Co 2 and Ce 3 ions across a Na®on TM cation exchange membrane (CEM) has been studied in the Donnan exclusion domain. In such conditions the membrane does not contain any mobile anion but only cations (the counter-ions) which electrically equilibrate the sulphonic sites. In the frame of the gel-model, the ion transport ̄ux depends on both the composition of the membrane resulting from the solution±membrane exchange equilibrium and the mobility of the counter-ions within the membrane. As the charge of the ion increases, so does its af®nity for the membrane which is greater for multivalent counter-ions than for protons due to their larger electrostatic attraction towards the exchange sites of opposite polarity. On the other hand, as the charge of the ion increases, its mobility in the membrane is reduced. Modelling of this transport takes into account these two aspects as well as ionic concentration variations in the diffusion layer. # 1998 Elsevier Science B.V.

Who reads Selective permeability of a perfluorosulphonic membrane to different valency cations. Ion-exchange isotherms and kinetic aspects?

Author

Sébastien Logette; Catherine Eysseric; Gérald Pourcelly; Arlette Lindheimer; Claude Gavach

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0376-7388)

Published

1998

Language

EN

Field

Engineering (Physical Sciences)