Abstract
The optimal catalyst 10%Ce-Al-Ox combined the advantages of CeO2 and Al2O3, and 10%Ce-Al-Ox exhibited higher than 98% SO2 conversion and higher than 86% sulfur yield in the temperature range of 425–500 °C. VASP calculation showed that the adsorption energy of Ce-Al-Ox catalyst for SO2 was higher than that of Al2O3 for SO2. Finally, for the SO2 reduction by CO over 10%Ce-Al-Ox, the reaction intermediates were bicarbonates, monodentate carbonates and gaseous CO for CO, while weakly adsorbed sulfate, weakly adsorbed SO2 and binuclear bidentate sulfate for SO2.
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