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Controlling the Sulfur Poisoning of Ag/Al2O3 Catalysts for the Hydrocarbon SCR Reaction by Using a Regenerable SOx Trap

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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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Acknowledgments

The financial support of this work by EPSRC through the CASTech project (EP/G012156/1) is gratefully acknowledged.

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Authors and Affiliations

  1. CenTACat, School of Chemistry and Chemical Engineering, Queen’s University Belfast, David Keir Building, Belfast, BT9 5AG, Northern Ireland, UK

    Sarayute Chansai, Robbie Burch & Christopher Hardacre

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  1. Sarayute Chansai
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  2. Robbie Burch
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  3. Christopher Hardacre
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Correspondence to Sarayute Chansai.

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Chansai, S., Burch, R. & Hardacre, C. Controlling the Sulfur Poisoning of Ag/Al2O3 Catalysts for the Hydrocarbon SCR Reaction by Using a Regenerable SOx Trap. Top Catal 56, 243–248 (2013). https://doi.org/10.1007/s11244-013-9961-0

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  • DOI: https://doi.org/10.1007/s11244-013-9961-0

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