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Functional Phosphate Alkoxysilanes for Facilitated Transport Membrane Materials

Published online by Cambridge University Press:  10 February 2011

N. Hovnanian ,
M. Smaihi ,
A. Cardenas  and
C. Guizard
N. Hovnanian
Affiliation:
LMPM, UMR 9987 CNRS, UMII, ENSCM, 8 rue de I'Ecole Normale, 34053 Montpellier, Francesmaihi@crit I.univ-montp2.fr
M. Smaihi
Affiliation:
LMPM, UMR 9987 CNRS, UMII, ENSCM, 8 rue de I'Ecole Normale, 34053 Montpellier, Francesmaihi@crit I.univ-montp2.fr
A. Cardenas
Affiliation:
LMPM, UMR 9987 CNRS, UMII, ENSCM, 8 rue de I'Ecole Normale, 34053 Montpellier, Francesmaihi@crit I.univ-montp2.fr Laboratorio FIRP, Facultad de Ingenieria,Universidad de Los Andes, Mérida, Venezuela
C. Guizard
Affiliation:
LMPM, UMR 9987 CNRS, UMII, ENSCM, 8 rue de I'Ecole Normale, 34053 Montpellier, Francesmaihi@crit I.univ-montp2.fr
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Abstract

Sol-gel processing of heteropolysiloxanes containing phosphate groups has been investigated for potential applications in the synthesis of facilitated transport solid membrane. The co-hydrolysis-condensation of SiP (diethylphosphatoethyltriethoxysilane) with each of the three following alkoxysilanes: tetraethoxysilane (TEOS), methyltrimethoxysilane (MTMOS) and C6H4[C(O)NH(CH2)3Si(CH3)(OEt)2] 2−1,4 (abbreviated P1) have been studied. The gels produced have been characterized by 29Si and 31P MAS NMR spectroscopy to determine Ihe chemical structure of these new materials. The connectivity and the hydrophilic properties of the materials are controlled by the chemical nature of the alkoxysilanes and the SiP concentration. Dense flexible membranes have been obtained by tape casting and have been used for the facilitated transport of Ni++ ions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 435: Symposium V – Better Ceramics Through Chemistry VII , 1996 , 501
Copyright
Copyright © Materials Research Society 1996

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