Effect of water on the oxidation of dichlorobenzene over V2O5/TiO2 catalysts

▶ The presence of water during the oxidation of m-DCB over a 3.6 wt.% V2O5/TiO2 catalysts results in a bimodal activation/deactivation behavior depending on the reaction temperature. ▶ The magnitude of these water effects is proportional to the water concentration added to the feed. ▶ These water effects are completely reversible, although the transient behavior differs at different temperatures. ▶ The formation of some partial oxidation byproducts was also observed and the selectivities towards such products, although in general remained low, increased in the presence of water.