| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 50737 | Catalysis Communications | 2011 | 5 Pages |
This paper examines the effect of sulfation of aerogel vanadia–titania catalysts prepared by sol–gel route on its activity in the total oxidation of chlorobenzene. The catalysts have been characterized by means of ICP-AES, N2 physisorption, XRD, Raman spectroscopy, XPS, H2-TPR and NH3–TPD. This study demonstrated that the VTiS ternary catalyst exhibits higher activity compared to binary VTi. This result could be explained by the fact that sulfate species improves the acidity of the solid and hence ensures that vanadium species are in a high oxidation state leading to a better activity of sulfated catalyst.
► Aerogel VTiS catalysts are more active in chlorobenzene oxidation than VTi ones. ► Interaction between sulfate and vanadium species leads to more active catalysts. ► Sulfate species enhance the global acidity of the samples. ► Sulfates succeed to maintain vanadium species in a high oxidation state.
