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

Pengfei Zhu; Qiaosen Yuan; Na Li; Zhaoxia Hu; Shouwen Chen

doi:10.3390/ma17092103

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

Materials (Basel). 2024 Apr 29;17(9):2103. doi: 10.3390/ma17092103.

Authors

Pengfei Zhu¹, Qiaosen Yuan¹, Na Li¹, Zhaoxia Hu¹, Shouwen Chen¹

Affiliation

¹ School of Biological and Environmental Engineering, Nanjing University of Science & Technology, Nanjing 210094, China.

Abstract

The development of efficient catalysts with longevity to remove chlorobenzene is challenging due to Cl poisoning. Herein, a series of Mn-Cr/ZrO_x catalysts supported by Zr-based metal-organic framework (UiO-66)-derived ZrO_x was prepared and investigated for chlorobenzene (CB) catalytic oxidation. MnCr/ZrO_x-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_x-M exhibited the best catalytic activity for chlorobenzene oxidation with T₉₀ 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_x support. Furthermore, 40Mn7Cr3/ZrO_x-M presented excellent stability for chlorobenzene oxidation.

Keywords: catalytic oxidation; chlorobenzene; chromium oxides; synergistic effect.

Grants and funding

This research was funded by Fundamental Research Funds for the Central Universities (30920021114), China.