TITLE:
Transport Properties of Novel Hybrid Cation-Exchange Membranes on the Base of MF-4SC and Halloysite Nanotubes
AUTHORS:
Anatoly Filippov, Daria Khanukaeva, Denis Afonin, Galina Skorikova, Evgeny Ivanov, Vladimir Vinokurov, Yuri Lvov
KEYWORDS:
Three Layer Membrane Model, The Nernst-Planck Approach, Diffusion Permeability, Perfluorinated Cation-Exchange Membrane, Hybrid MF-4SC/Halloysite Membrane
JOURNAL NAME:
Journal of Materials Science and Chemical Engineering,
Vol.3 No.1,
January
20,
2015
ABSTRACT: The diffusion permeability
through new hybrid materials based on a Nafion-type membrane (MF- 4SC) and
nanotubes of halloysite is investigated using the Nernst-Planck approach. A
method of quantitative evaluation of physicochemical parameters (averaged and
individual diffusion coefficients and averaged distribution coefficients of ion
pairs in the membrane) of system “electrolyte solution—ion-exchange membrane—water”,
which was proposed earlier, is further developed. The parameters of hybrid
membranes on the base of MF-4SC and nanotubes of halloysite (5% wt and 8% wt)
are obtained from experimental data on diffusion permeability of NaCl solutions
using theoretical calculations. New model of three-layer membrane system can be
used for refining calculated results with taking into account both diffusive
layers. It is shown that adding of halloysite nanotubes into the membrane
volume noticeably affects exchange capacity as well as structural and transport
characteristics of original perfluorinated membranes. Hybrid membranes on the
base of MF-4SC and halloysite nanotubes can be used in fuel cells and
catalysis.