کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
43664 | 45981 | 2007 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Chlorinated organics total oxidation over V2O5/TiO2 catalysts prepared by polyol-mediated synthesis Chlorinated organics total oxidation over V2O5/TiO2 catalysts prepared by polyol-mediated synthesis](/preview/png/43664.png)
Vanadia and titania/vanadia sols synthesized by the polyol method were used to prepare TiO2-supported catalysts. Both the modification of the V2O5 sol with a low amount of water and the use of a TiO2/V2O5 sol induced a reliable adhesion between the preformed active phases and the support, thus leading to stable catalysts. Despite the low amount of vanadium introduced in studied samples, V2O5/TiO2/WO3 catalysts were active in the o-DCB oxidation. The best results were obtained with 0.36-V2O5–TiO2 catalyst, prepared by direct impregnation with colloidal TiO2/V2O5-mixed oxides. The electroacoustic analysis indicated that the support does not show any particular electrostatic affinity for any studied sol; therefore, the higher ability of TiO2/V2O5 sol to form stable vanadium active species may possibly be explained by a better chemical affinity with the support.
Journal: Applied Catalysis A: General - Volume 325, Issue 2, 15 June 2007, Pages 309–315