Abstract
Abstract This work was conducted to investigate the oxidation characteristics of methane having the highest ignition temperature among the other hydrocarbon gases using transition metal catalysts. The catalyst used for methane oxidation was manganese oxide having a various oxidation number, such as MnO, MnO 2 , Mn 2 O 3 , Mn 3 O 4 , Mn 4 O 5 . The manganese oxide(MnxOy) catalyst is impregnated on TiO 2 , Al 2 O 3 for methane oxidation. To enhanced both of activity and life time of catalysts, Ni and Co was used as a promoter. In this study, various co-catalysts were synthesized by using excess wet impregnation method. The effect of reaction temperature and space velocity was measured to calculate the activity of catalysts such as, activation energy of T 50 , and T 90. The life time of bi-metallic manganese mixture, such as Mn-Co and Mn-Ni catalysts, were increased more 10 % than manganese oxide catalyst, but activity of those was decreased slightly.Key Words : Methane, Catalytic Oxidation, Transition Metal, Conversion Temperature
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