Functional phosphate alkoxysilanes for facilitated transport membrane materials
- CNRS, Montpellier (France)
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 C{sub 6}H{sub 4}[C(O)NH(CH{sub 2}){sub 3}Si(CH{sub 3})(OEt){sub 2}]{sub 2}-1,4 (abbreviated P1) have been studied. The gels produced have been characterized by {sup 29}Si and {sup 31}P MAS NMR spectroscopy to determine the 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 an have been used for the facilitated transport of Ni{sup ++} ions.
- OSTI ID:
- 427734
- Report Number(s):
- CONF-960401--; ISBN 1-55899-338-X
- Country of Publication:
- United States
- Language:
- English
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