Preparation of a novel series of Mn-Cr-Zr catalysts and their catalytic combustion performance for chlorobenzene

ZHOU Qiang; YUAN Qiaosen; ZHU Pengfei; SHI Weijiang; LI Na; HU Zhaoxia; CHEN Shouwen

doi:10.13205/j.hjgc.202510028

Volume 43 Issue 10

Oct. 2025

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2025 > 43(10): 255-263

ZHOU Qiang, YUAN Qiaosen, ZHU Pengfei, SHI Weijiang, LI Na, HU Zhaoxia, CHEN Shouwen. Preparation of a novel series of Mn-Cr-Zr catalysts and their catalytic combustion performance for chlorobenzene[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(10): 255-263. doi: 10.13205/j.hjgc.202510028

Citation:

ZHOU Qiang, YUAN Qiaosen, ZHU Pengfei, SHI Weijiang, LI Na, HU Zhaoxia, CHEN Shouwen. Preparation of a novel series of Mn-Cr-Zr catalysts and their catalytic combustion performance for chlorobenzene[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(10): 255-263. doi: 10.13205/j.hjgc.202510028

Citation:

ZHOU Qiang, YUAN Qiaosen, ZHU Pengfei, SHI Weijiang, LI Na, HU Zhaoxia, CHEN Shouwen. Preparation of a novel series of Mn-Cr-Zr catalysts and their catalytic combustion performance for chlorobenzene[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(10): 255-263. doi: 10.13205/j.hjgc.202510028

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Preparation of a novel series of Mn-Cr-Zr catalysts and their catalytic combustion performance for chlorobenzene

doi: 10.13205/j.hjgc.202510028

1. Nanjing Qixia District Ecological Environment Monitoring Center, Nanjing 210038, China;
2. School of Environmental & Biological Engineering, Nanjing University of Science & Technology, Nanjing 210094, China

Received Date: 2024-07-30
Accepted Date: 2024-09-26
Rev Recd Date: 2024-08-25

Available Online: 2025-12-03

Publish Date: 2025-10-01

Abstract

Abstract

Highly harmful chlorinated volatile organic pollutants （CVOCs） are often generated during industrial production and waste incineration processes. The catalyst poisoning in the catalytic combustion treatment process of CVOCs has always been a bottleneck problem. Taking chlorobenzene-based CVOCs as the research object， a novel series of Mn-Cr-Zr catalysts were prepared by wet impregnation using Zr-based metal organic framework （UiO-66） as a carrier. The catalytic combustion performance of chlorobenzene and the catalytic structure-activity relationship of the catalyst were investigated in detail. The structure and morphology of the catalyst were characterized and analyzed by XRD， SEM， N₂ adsorption-desorption isotherms， and XPS. The surface acidity and redox performance of the catalyst were evaluated by NH₃-TPD and H₂-TPR. The prepared catalysts effectively solved the problem of generating multiple chlorine by-products during the catalytic oxidation of CVOCs using Mn-based and Cr-based catalysts. The results showed that the catalytic combustion activity of catalyst 40Mn7Cr3-Zr was the best. When the space velocity was 20000 mL/（g·h） and the concentration of chlorobenzene was 1000 mg/m³， the conversion of chlorobenzene reached 90% at 293 ℃. In the long-term stability test at 300 ℃， chlorobenzene was completely converted to CO₂， and there was no CO and polychlorinated by-products detected in the product， indicating its good catalytic performance.
- volatile organic compounds,
- catalyst,
- oxidation,
- composites,
- chlorobenzene,
- UiO-66

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References(34)

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