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The effects of regeneration on the activities and structure of CeO2 catalysts for NH3-SCR of NOx have been studied in this article. CeO2 catalyst is deactivated by SO2 for NH3-SCR of NOx in a 200h long-term operation at 350°C due to the formation of sulfates, and its NOx conversion decreases from 100% to 83% gradually. However, sulfates can be removed from sulfur-poisoned CeO2 catalysts under high...
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