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Transition metal oxides for combustion and depollution processes

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Figure 6.1. Activity of various oxides in CO oxidation. Temperature T1/2 for a 50% conversion after pretreatment in dry N2 or in a 1%CO/air mixture as a function of T1/2 after pretreatment in wet air or in reducing atmosphere
Figure 6.2. Mars and van Krevelen (MvK) mechanism of methane oxidation over Ce x Sn (1-x) O 2 catalysts
Figure 6.3 : Effect of water on CO conversion over Co 3 O 4 . Dry conditions: 850 ppb H 2 O (trapping of moisture on zeolite at 80 °C); normal conditions: 3 ppm H 2 O; wet conditions 6000 ppm H 2 O: dry (o); normal (  ); wet (∆).Taken from Ref
Figure 6.6: CO oxidation activity tests of the MnO 2 , CuO 0.1 /MnO 2 , and Fe-, Co-, Ni-, and Cu-doped MnO 2 catalysts
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