title: Inorganic-organic hybrid membranes with anhydrous proton conduction prepared from 3-aminopropyltriethoxysilane and sulfuric acid by the sol-gel method.
abstract: 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.
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan.
authors.forename: Teruaki
authors.initials: T
authors.lastname: Tezuka
authors.forename: Kiyoharu
authors.initials: K
authors.lastname: Tadanaga
authors.forename: Akitoshi
authors.initials: A
authors.lastname: Hayashi
authors.forename: Masahiro
authors.initials: M
authors.lastname: Tatsumisago
mesh_terms: 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
chemical_list: D005782:Gels; D008567:Membranes, Artificial; D011437:Propylamines; D011522:Protons; D012821:Silanes; D013464:Sulfuric Acids; C477625:amino-propyl-triethoxysilane; C033158:sulfuric acid