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) |
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Hauptverfasser: | , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
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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. |
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ISSN: | 0049-6979 1573-2932 |
DOI: | 10.1007/s11270-015-2323-8 |