ChemInform Abstract: An Electron Spectroscopy and X‐Ray Diffraction Study of NiO/Al2O3 and NiO‐WO3/Al2O3 Catalysts.

Abstract The results of UV‐VIS diffuse reflectance spectroscopy and XRD reveal that in the NiO‐WO3/Al 2 O 3 catalysts W is present as a W 6+ surface phase regardless of calcination temp. and W content.