CATALYST MATERIALS FOR AMMONIA OXIDATION IN LEAN-BURN ENGINE EXHAUST
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United States of America Patent
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Issued Date -
Feb 23, 2012
app pub date -
Aug 20, 2010
filing date -
Aug 20, 2010
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Abstract
in the hot, oxygen-abundant exhaust flow emanated from the lean-burn engine and passed through the exhaust gas treatment subsystem to help prevent ammonia slip to the atmosphere. The clean-up oxidation catalyst comprises perovskite oxide particles and/or manganese-containing mixed metal oxide particles dispersed on a selective catalytic reduction (SCR) catalyst.
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