Transport Properties of Modified Nafion Membranes: Effect of Zeolite and Precursors Full article
| Journal |
Solid State Ionics
ISSN: 0167-2738 |
||||
|---|---|---|---|---|---|
| Output data | Year: 2010, Volume: 180, Number: 40, Pages: 1694-1701 Pages count : 8 DOI: 10.1016/j.ssi.2009.11.009 | ||||
| Tags | Nafion, Nanocomposites, Silica, Tetraalkylammonium cations, Transport properties, Zeolite | ||||
| Authors |
|
||||
| Affiliations |
|
Funding (2)
| 1 | Russian Foundation for Basic Research | 07-08-91580 |
| 2 | Russian Foundation for Basic Research | 08-08-00660 |
Abstract:
Fe-silicalite/Nafion composite membranes with high relative selectivity (as defined by the proton conductivity to methanol permeability ratio) of 5.4 and proton conductivity of 11 mS cm− 1 were prepared by in situ hydrothermal synthesis of the zeolite within the pores of Nafion membranes. The effects of the zeolite structure and precursor structure were evaluated in terms of transport properties and acidity levels for a series of Nafion membranes modified with silica and tetrapropylammonium (TPA) and tetrabutylammonium (TBA) cations. Introduction of up to 40% (w/w) of silica vs. pure Nafion shows little effect on the transport and acidity properties of the composite membranes. Introduction of tetraalkylammonium (TAA) cations reduces water uptake of the membranes, and results in the appearance of protons that are inaccessible for titration in water media. The selectivity of the composite membranes increases in the order: SiO2/Nafion < TAA/Nafion < Fe-silicalite/Nafion.
Cite:
Krivobokov I.M.
, Gribov E.N.
, Okunev A.G.
, Spoto G.
, Parmon V.N.
Transport Properties of Modified Nafion Membranes: Effect of Zeolite and Precursors
Solid State Ionics. 2010. V.180. N40. P.1694-1701. DOI: 10.1016/j.ssi.2009.11.009 WOS Scopus РИНЦ OpenAlex ANCAN
Transport Properties of Modified Nafion Membranes: Effect of Zeolite and Precursors
Solid State Ionics. 2010. V.180. N40. P.1694-1701. DOI: 10.1016/j.ssi.2009.11.009 WOS Scopus РИНЦ OpenAlex ANCAN
Dates:
| Submitted: | May 27, 2009 |
| Accepted: | Nov 10, 2009 |
| Published online: | Dec 3, 2009 |
| Published print: | Jan 29, 2010 |
Identifiers:
| ≡ Web of science: | WOS:000275210700014 |
| ≡ Scopus: | 2-s2.0-74149089695 |
| ≡ Elibrary: | 15313070 |
| ≡ OpenAlex: | W2002611256 |
| ≡ Chemical Abstracts: | 2010:95387 |
| ≡ Chemical Abstracts (print): | 153:627885 |