Decomposition of H2O2 over manganese-chromium oxide catalyst in aqueous and alkaline solutions
作者： M.M. Selim , M.K. El-Aiashi , H.S. Mazhar , S.M. Kamal
DOI: 10.1016/0167-577X(96)00090-0
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摘要: Abstract β-manganese dioxide with 0.1 chromic anhydride was thermally treated at different temperatures (250, 500, 750 and 1000 °C). The decomposition products were characterized by X-ray diffraction measurements. catalytic activity of the thermal for H 2 O tested in aqueous alkaline solutions. analysis revealed that addition M CrO 3 stabilizes β-MnO crystalline form 500 °C. transformation into cubic Mn detected after heating At °C a 4 produced. to decreased solution. sodium hydroxide solution much enhanced rate decomposition. mixed catalysts found be higher than pure . This effect can attributed intrinsic instability medium base catalysis OH −
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