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Supported manganese oxide catalysts were prepared by incipient wetness impregnation method for methane cat- alytic combustion,and effects of the support (Al_2O_3,SiO_2 and TiO_2) and Mn loading were investigated.These catalysts were characterized with N_2 adsorption,X-ray diffraction,X-ray photoelectron spectroscopy and temperature-programmed reduction techniques.Methane conversion varied in a large range depending on supports or Mn loading.Al_2O_3 supported 15% Mn cata- lyst exhibited better activity toward methane catalytic oxidation.The manganese state and oxygen species played an important role in the catalytic performance.
Supported manganese oxide catalysts were prepared by incipient wetness impregnation method for methane cat- alytic combustion, and effects of the support (Al 2 O 3, SiO 2 and TiO 2) and Mn loading were investigated. -ray photoelectron spectroscopy and temperature-programmed reduction techniques. Methane conversion varied in a large range depending on supports or Mn loading. Al_2O_3 supported 15% Mn cata- lyst targeting better activity toward methane catalytic oxidation. The manganese state and oxygen species played an important role in the catalytic performance.