The Roles of Phosphorus and Soot on the Deactivation of Diesel Oxidation Catalysts
Date Published: 2009-04-20
Paper Number:2009-01-0628
DOI: 10.4271/2009-01-0628
Citation:
Eaton, S., Bunting, B., Toops, T., and Nguyen, K., "The Roles of Phosphorus and Soot on the Deactivation of Diesel Oxidation Catalysts," SAE Technical Paper 2009-01-0628, 2009, doi:10.4271/2009-01-0628.
The deactivation of diesel oxidation catalysts (DOCs) by soot contamination and lube-oil derived phosphorus poisoning is investigated. Pt/CeO
2
/γ-AI
2
O
3
DOCs aged using three different protocols developed by the authors and six high mileage field-returned DOCs of similar formulation are evaluated for THC and CO oxidation performance using a bench-flow reactor. Collectively, these catalysts exhibit a variety of phosphorus and soot morphologies contributing to performance deactivation.
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