P-Tu-122 Impact of the Support Material on the Stability of Nitrates and Sulfates in Lean NOx Traps

Tuesday, June 7, 2011
Ontario Exhibit Hall (Detroit Marriott Hotel at the Renaissance Center )
Nathan A. Ottinger1, Todd J. Toops2, Josh A. Pihl1, Jae-Soon Choi1 and William P. Partridge Jr.1, (1)Fuels, Engines and Emissions Research Center, Oak Ridge National Laboratory, Knoxville, TN, (2)Fuel, Engines, and Emissions Research Center, Oak Ridge National Laboratory, Knoxville, TN
Supporting the Ba-storage phase on ceria rather than alumina significantly destabilizes the sulfates and nitrates on NOx storage reduction catalysts.  This can be seen through both DRIFTS and temperature programmed reduction experimentation.  The results show that the Barium bound sulfur is released at temperatures 100°C less when ceria is used.

Extended Abstracts:

See more of: Tuesday Poster Session: Environmental Protection
See more of: Catalysis, Materials, and Reaction Engineering for Environmental Protection
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