CATALYTIC WET AIR OXIDATION OF METHYL TERT-BUTYL ETHER (MTBE) ON Rh/γ-Al2O3: EFFECT OF Sn AND Ce ADDITION
The activity and selectivity of Rh/γ-Al2O3 catalysts modified by the addition of Sn and Ce was evaluated for the oxidation of MTBE in the liquid phase. The reaction was carried out in a Parr reactor at 120 ºC and 10 bars of O2 pressure. RhSn/γ-Al2O3 catalyst was more active than Rh/γ-Al2O3 catalyst. The increment in the content of Ce, favors the selectivity toward CO2, this is explained by the formation Ce4+-O2-M+ species, which improve the capacity of oxidation of the catalyst. The catalyst RhSn/γ-Al2O3-Ce5 showed the best selectivity toward CO2.
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