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Toluene Catalytic Oxidation by Manganese Oxide : (I) Activity and Characterization  

Cheon Tae-Jin (Department of Environmental Science and Engineering)
Kim Hye Jin (Department of Environmental Science and Engineering)
Choi Sung-Woo (Department of Environmental Science and Engineering)
Publication Information
Journal of Korean Society for Atmospheric Environment / v.21, no.2, 2005 , pp. 161-168 More about this Journal
Abstract
The catalytic oxidation of toluene in low concentration was investigated over manganese oxide/$\gamma$-A1$_{2}$O$_{3}$ catalysts. As increased manganese loading, the conversion of toluene increased at a lower temperature. The 18.2wt$\%$ Mn/$\gamma$-Al$_{2}$O$_{3}$ appeared to be the most active catalyst. XRD results indicated that most of the catalysts exist as MnO$_{2}$ and Mn$_{2}$O$_{3}$ crystalline phase. After the reaction, the used and the fresh catalysts were characterized by XPS. For the used catalyst, a prominent feature has increased. TPR profiles of 18.2 wt$\%$ Mn/$\gamma$-Al$_{2}$O$_{3}$ changed significantly as the manganese loading increased at a lower temperature.
Keywords
Catalytic oxidation; Toluene; Manganese oxide; MnO2 and Mn2O3; crystalline phase;
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