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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50137

    Title: Chlorobenzene oxidation using ozone over iron oxide and manganese oxide catalysts
    Authors: Wang,HC;Liang,HS;Chang,MB
    Contributors: 環境工程研究所
    Date: 2011
    Issue Date: 2012-03-27 17:04:18 (UTC+8)
    Publisher: 國立中央大學
    Abstract: A low-temperature catalytic oxidation of chlorobenzene (CB) has been performed at temperatures of 60-210 degrees C using ozone (O(3)) over iron oxide and manganese oxide, respectively. In the absence of ozone. CB conversion achieved with these two catalysts at 200 degrees C was below 10%. However, addition of 1200 ppm ozone results in a remarkable increase in CB conversion and the conversion reaches 91.7% at 150 degrees C for iron oxide, while 81.5% conversion is achieved with manganese oxide at 90 degrees C. The activation energy of manganese oxide (48 kJ mol(-1)) is higher than that of iron oxide (43 kJ mol(-1)) without ozone. However, as ozone is added, the activation energy is significantly reduced to 20.0 kJ mol(-1) for iron oxide. CO and CO(2) are the only carbon-containing products detected in the effluent gas stream. For the long-term test, no obvious deactivation was found in iron oxide and ozone. However, in the case of manganese oxide and ozone. 3% reduction of CB conversion was observed. Slight deactivation might be attributed to a small amount of reaction byproducts (carboxylic acid species) and residual chloride (MnCl(2)) being deposited on the active sites of the catalysts. (C) 2010 Elsevier B.V. All rights reserved.
    Appears in Collections:[環境工程研究所 ] 期刊論文

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