Chemistry Letters, Vol.34, No.9, 1286-1287, 2005
Structure of duplex oxide layer in porous alumina studied by Al-27 MAS and MQMAS NMR
A local structure analysis using Al-27 multiple-quantum magic-angle-spinning (MQMAS) and MAS NMR techniques has been performed on porous alumina fabricated by the anodic oxidation of aluminum. It is suggested that the main constituents of the inner and outer oxide layers composing porous alumina are [AlO4 and AlO5] and [AlO6], respectively, and that both of the layers adopt the amorphous structure.