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Visible light-excited ethanol dehydration reaction steps to adsorb ethanol and then to donate an electron to transform V(IV) to V(III) site exposed on mesoporous V(IV)-TiO 2 catalyst were successfully monitored by means of V Kβ 5,2 -selecting XANES spectroscopy. Spherically-bent Ge(422) crystal was used for the X-ray fluorescence analyses and Xe arc lamp of 500 W was illuminated at...
The heterogeneity of gold sites in various Au/TiO 2 catalysts was studied by means of state-sensitive Au L 3 -edge X-ray absorption fine structure (XAFS) combined with high energy-resolution X-ray fluorescence spectrometry. A series of Au/TiO 2 catalysts were prepared via deposition-precipitation method on anatase-type or mesoporous (amorphous) TiO 2 added with NaOH...
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