RT Journal Article
T1 Water and methanol transport in Nafion membranes with different cationic forms 1. Alkali monovalent cations
A1 Godino Gómez, María Paz
A1 Barragán García, Vicenta María
A1 García Villaluenga, Juan Pedro
A1 Ruiz Bauzá, Carlos
A1 Seoane Rodríguez, Benjamín
AB The mass flux originated when two methanol-water solutions of different methanol concentration are separated by a Nation 117 membrane in acid (H+) and different alkali metal forms (Li+, Na+, K+, Rb+, Cs+) have been measured, as a function of the methanol concentration difference. From the experimental results, the methanol and water permeabilities have been estimated for the different forms of the membrane. The results show that the cationic form of the membrane strongly influences on the methanol and water permeabilities with respect to the values corresponding to its acid form. Moreover, this influence is different for water and methanol depending on the substituted cation. This strong influence of the cationic form of the membrane on the methanol and water permeabilities could be important in relation to the development of new membranes to decrease the methanol crossover in direct methanol fuel cells.
PB Elsevier Science BV
SN 0378-7753
YR 2006
FD 2006-09-29
LK https://hdl.handle.net/20.500.14352/50546
UL https://hdl.handle.net/20.500.14352/50546
LA eng
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NO © 2006 Elsevier B.V. Financial support from the University Complutense ofMadrid under Project 052PR13273 is gratefully acknowledged.
NO University Complutense of Madrid
DS Docta Complutense
RD 3 may 2024