Chlorobenzene Destruction over Mesostructured CuO and MnOx Co-Modified CeO2 Catalyst: Activity and Activation Route

Mesostructured CuMnCeO x catalysts were prepared and tested in chlorobenzene destruction. Mn and Cu phases enter CeO 2 matrix with a fluorite-like structure to form Cu–Mn–O–Ce solid solution. Both synthesis protocol and metal-doping content affect the metal state, reducibility, and oxygen distributi...

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Veröffentlicht in:Water, air, and soil pollution air, and soil pollution, 2015, Vol.226 (3)
Hauptverfasser: He, Chi, Men, Gaoshan, Yu, Yanke, Pan, Hua, Xu, Bitao
Format: Artikel
Sprache:eng
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Zusammenfassung:Mesostructured CuMnCeO x catalysts were prepared and tested in chlorobenzene destruction. Mn and Cu phases enter CeO 2 matrix with a fluorite-like structure to form Cu–Mn–O–Ce solid solution. Both synthesis protocol and metal-doping content affect the metal state, reducibility, and oxygen distribution of composites. The c 0.15 c 0.15 c 0.7 sample exhibits the highest activity with 90 % of chlorobenzene oxidized at around 250 °C. Enhanced oxygen concentration and mobility, and abundant oxygen vacancy promote the desorption of adsorbed Cl, which guarantees the superior stability of CuMnCeO x . Incorporation of CuO and MnO x effectively inhibits the formation of organic byproducts, such as phenolates, maleates, and o -benzoquinone, especially at elevated temperatures.
ISSN:0049-6979
1573-2932
DOI:10.1007/s11270-015-2323-8