Investigation of surface structures of dispersed V2O5 on CeO2-SiO2, CeO2-TiO2, and CeO2-ZrO2 mixed oxides by XRD, Raman, and XPS techniques

Article Abstract:

The techniques of X-ray diffraction, Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) have been employed to investigate dispersion and structural characteristics of V2O5/CeO2-MO2 catalysts calcined at different temperatures. The XPS results reveal that O 1s, Ce 3d, and V 2p core-level photoelectron peaks are sensitive to the calcination temperature and the nature of mixed-oxide system.

Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Industrial inorganic chemicals, not elsewhere classified, Cesium, Methods, Usage, X-ray diffraction, Raman spectroscopy

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Reactivity of the oxygen sites in the V2O5/TiO2 anatase catalyst

Article Abstract:

A theoretical investigation on the reactivity of the different oxygen sites in a dispersed V2O5/TiO2 slab model is presented. This model represents anhydrous conditions and contains all the potentially active oxygen sites proposed to date in the literature: vanadyl V=O, bridging V-O-V, interface V-O-Ti, and surface Ti-O-Ti oxygen sites.

Science & research, All Other Miscellaneous Chemical Product and Preparation Manufacturing, Catalysts, Chemical preparations, not elsewhere classified, Research, Titanium dioxide, Vanadium compounds

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