Characterization of AlNbO4 and vanadium oxide catalysts supported on AlNbO4 by 27Al and 51V solid state NMR spectroscopy
- 1 January 1990
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 21,p. 1480-1482
- https://doi.org/10.1039/c39900001480
Abstract
27 Al Solid state NMR spectroscopy of Al2O3–Nb2O5 mixtures (Al/Nb = 1) reveals three types of aluminium centres corresponding to tetrahedral, pentagonal and octahedral coordination;51 V solid state NMR spectra of vanadium oxide, dispersed on Al–Nb oxides at a coverage lower than a monolayer reveal two types of vanadia species, one due to a symmetric tetrahedral environment and the other due to a distorted or octahedral coordination (different from V2O5).Keywords
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