Inorganic-organic hybrid membranes with anhydrous proton conduction prepared from 3-aminopropyltriethoxysilane and sulfuric acid by the sol-gel method.
Inorganic-organic hybrid membranes with anhydrous proton conduction were prepared from 3-aminopropyltriethoxysilane and H2SO4 by the sol-gel method. The membrane has a unique structure: a hexagonal phase formed by the stacking of rodlike polysiloxanes with ion complexes of ammonium groups and HSO4- extruded outside. The membranes showed high conductivity of 2 x 10-3 S cm-1 at 200 degrees C under dry atmosphere. In the membrane, protons probably migrate through the outside of the rodlike polysiloxanes along hydrogen-bond chains formed among HSO4- anions.
Tezuka
Teruaki
T
Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan.
Tadanaga
Kiyoharu
K
Hayashi
Akitoshi
A
Tatsumisago
Masahiro
M
D005782:Gels / Q000737:chemistry; D008567:Membranes, Artificial; D015394:Molecular Structure; D049329:Nanostructures / Q000737:chemistry; D011437:Propylamines; D011522:Protons; D012821:Silanes / Q000737:chemistry*; D013464:Sulfuric Acids / Q000737:chemistry*; D013499:Surface Properties; D013696:Temperature
D005782:Gels; D008567:Membranes, Artificial; D011437:Propylamines; D011522:Protons; D012821:Silanes; D013464:Sulfuric Acids; C477625:amino-propyl-triethoxysilane; C033158:sulfuric acid