Catalytic Oxidation of Chlorobenzene over Amorphous Manganese-Chromium Catalysts Supported by UiO-66-Derived ZrOx.

The development of efficient catalysts with longevity to remove chlorobenzene is challenging due to Cl poisoning. Herein, a series of Mn-Cr/ZrO catalysts supported by Zr-based metal-organic framework (UiO-66)-derived ZrO was prepared and investigated for chlorobenzene (CB) catalytic oxidation. MnCr/ZrO-M prepared via a wet impregnation method presented an amorphous structure, indicating the homogeneous dispersion of Cr and Mn, which improved acid and redox properties. 40Mn7Cr3/ZrO-M exhibited the best catalytic activity for chlorobenzene oxidation with T of 293 °C, which is mainly due to the strong interaction between manganese and chromium promoted by the large specific surface area of the ZrO support. Furthermore, 40Mn7Cr3/ZrO-M presented excellent stability for chlorobenzene oxidation.