Facile preparation of alkali metal-modified hollow nanotubular manganese-based oxide catalysts and their excellent catalytic soot combustion performance.

However, with the increase in SO 2 concentration, the activity of Cs 0.3 MnO δ catalyst shows a decreasing trend, especially when the T 90 temperature increased significantly. 3.4 Possible reaction mechanism of soot combustion on the as‐prepared catalysts In the prepared different single‐metal oxide catalysts with fibrous structures, the Mn 2 O 3 catalyst shows better catalytic activity because of its excellent redox ability.

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