XPD INVESTIGATION OF V2O5 TIO2 ANATASE MODEL CATALYSTS/

The system V2O5/TiO2 anatase is an important industrial catalyst for t he partial oxidation of hydrocarbons. Model catalysts were prepared by depositing thin V2O5 layers upon clean anatase single crystal mineral s by means of DC magnetron sputtering. XPD measurements were performed on the fresh structure, recording the Ti 2p(3/2), V 2p(3/2) O 1s and C 1s photoemission lines at 28 degrees polar angle. The scans displaye d a marked degree of symmetry and structure, which was interpreted on the basis of the experimental anatase XPD pattern. After a standard ca talytic reaction the used model catalysts were re-examined by a simila r XPD characterization.