Improved metal-support interaction in Ru/CeO2 catalyst via plasma-treated strategy for dichloroethane oxidation

Silica‐Confined Ru Species Highly Dispersed on the Porous Ce‐Modified ZrO2 Matrix with Different Redox and Acidity Properties for the Catalytic Combustion of 1,2‐Dichloroethane

“…The RuO 2 @Ce 0.1 Zr 0.9 O 2 À SiO 2 catalyst showed relatively low HCl selectivity among all the catalysts, which was attributed to the strong redox properties. [12,35] Except for HCl and Cl 2 , several chlorinated byproducts were also detected at the outlet, such as vinyl chloride (VC) and dichloroethylene (Figure 7(d)). VC was the intermediate, which formed by the dehydrochlorination of DCE on the Lewis acid sites and was first observed at about 200 °C.…”

“…The Brønsted acid sites could remove the adsorbed Cl À in the form of HCl, improving the anti-poisoning property of catalyst. [35] González-Velasco et al reported a deep oxidation of DCE over H-type zeolites (HÀ Y and H-ZSM-5) with excellent catalytic activity for CVOCs decomposition as well as good selectivity for the formation of HCl and CO 2 , which was attributed to the strong Brønsted acid sites of H-type zeolites. [36] Fei et al constructed a Ru/ZrO 2 @SiO 2 catalyst for catalytic DCE oxidation that the catalyst exhibited superior activity due to the introduction of the porous SiO 2 layer, which was beneficial for the formation of Lewis acid sites.…”