Precursor Effect on the Molecular Structure, Reactivity, and Stability of Alumina-Supported Vanadia
作者： A. E. Lewandowska , M. A. Bañares , D. F. Khabibulin , O. B. Lapina
DOI: 10.1021/JP9057884
关键词:
摘要: This work studies the influence of specific vanadium precursors on alumina-supported oxide catalysts. Vanadyl sulfate, ammonium metavanadate, and vanadyl acetylacetonate were used as precursors. All catalysts have same surface coverage (4 V atoms/nm2). The structural features species studied by 51V-NMR, UV−vis, Raman spectroscopy. precursor determines strength interaction between supported VOx alumina. reducibility ions was estimated conventional TPR/TPO cycles. electronic changes during reduction/oxidation cycles in situ UV−vis spectroscopy (TPR/TPO-Raman, TPR/TPO-UV−vis). Surface sulfate reduce concomitantly to species.
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