Fourier-transform infrared investigation of structures of vanadium oxide on various supports
- 1 January 1987
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
- Vol. 83 (3) , 675-685
- https://doi.org/10.1039/f19878300675
Abstract
Surface structures of vanadium oxides supported on various metal oxides (titania, alumina, zirconia and silica gel) formed by wet impregnation and by gas-phase preparation have been studied by Fourier-transform infrared spectroscopy. The V content ranged from 1.4 to 12 wt %. The application of band-shape analysis to the severely overlapped and weak bands using a small computer system has provided quantitative information for the surface vanadates. The surface vanadium oxides on titania are composed of three species. On catalysts prepared by the gas-phase method a new phase of vanadate is observed in i.r. spectra. The surface vanadates vary with the preparation methods as well as the repeat time of VOCl3 circulation.Keywords
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