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Chlorinated organics total oxidation over V2O5/TiO2 catalysts prepared by polyol-mediated synthesis

Paper ID Volume ID Publish Year Pages File Format Full-Text
43664 45981 2007 7 PDF Available
Title
Chlorinated organics total oxidation over V2O5/TiO2 catalysts prepared by polyol-mediated synthesis
Abstract

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.

Keywords
Polyol-mediated synthesis; Catalytic total oxidation; V2O5/TiO2 catalysts; Preformed oxide sols
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 325, Issue 2, 15 June 2007, Pages 309–315
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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