망간산화물 촉매를 이용한 악취제거

The objective of this study was to assess the catalytic activities of manganese oxide (MnO, MnO₂, Mn₂O₃, and Mn₃O₄) catalysts for odors (acetaldehyde and propionaldehyde) removal. We used a fixed bed reactor as the experimental apparatus and the catalytic performance were carried out over the temperature range of 200~470℃. The properties and performance of catalysts were characterized by the X-ray diffraction (XRD) and Brunauer Emmett Teller (BET). The catalytic activities of manganese oxide catalysts for acetaldehyde combustion were in the order of MnO＜MnO₂＜Mn₂O₃＜Mn₃O₄, and it is similar to that of propionaldehyde combustion. We also confirmed that the reactions have well followed the kinetic model of Power-Rate Law and the reaction order (n) is 1 for both of the acetaldehyde and propionaldehyde combustion. In addition, the reaction activation energy of acetaldehyde and propionaldehyde combustion over Mn₃O₄ were found to be 72.42 kJ㏖?¹ for 487~503 K and 51.14 kJ㏖?¹ for 473~533 K, respectively.