Controlling the Sulfur Poisoning of Ag/Al2O3 Catalysts for the Hydrocarbon SCR Reaction by Using a Regenerable SOx Trap |
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| Authors: | Sarayute Chansai Robbie Burch Christopher Hardacre |
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| Affiliation: | 1. CenTACat, School of Chemistry and Chemical Engineering, Queen’s University Belfast, David Keir Building, Belfast, BT9 5AG, Northern Ireland, UK
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| Abstract: | The deactivation of a silver-based hydrocarbon selective catalytic reduction catalyst by SOx and the subsequent regeneration under various operating conditions has been investigated. Using a sulfur trap based on a silica-supported catalyst it was found that, for a Ag/SiO2 + Ag/Al2O3 combination, the negative effect of SO2 on the n-octane-SCR reaction can be eliminated under normal operating conditions. The trap can be regenerated by hydrogen at low temperatures or at higher temperatures using a hydrocarbon reductant. |
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