HIGHLY EFFICIENT LOW-TEMPERATURE CATALYTIC DEGRADATION OF CHLOROBENZENE OVER MnOx-CeO2/γ-Al2O3-CNT.

Chlorobenzene degradation has attracted much attention due to high toxicity and carcinogenicity. MnOx-CeO2/γ-Al2O3-CNT was prepared by the equivalent-volume impregnation method with carbon nanotubes as raw material and used for the catalytic oxidation of chlorobenzene. Compared with MnOx-CeO2/γ-Al2O3, MnOx-CeO2/γ-Al2O3-CNT catalyst showed high activity of nearly 100% CB conversion at 345 °C and the space velocity of 11000 h-1. The characterization results revealed that the MnOx-CeO2/γ-Al2O3-CNT catalyst had a higher Mn4+/Mn3+ ratio, higher amount of chemisorbed oxygen, more weak acid sites and less strong acid sites than MnOx-CeO2/γ-Al2O3. These were responsible for the high activity and stability of MnOx-CeO2/γ-Al2O3-CNT. [ABSTRACT FROM AUTHOR]

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