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CH3041
CATALYTIC
CONVERTERS
• Addition of 3-way catalytic converters to cars has
reduced the levels of emitted
NOx (75%) dramatically.
NOx (75%) dramatically.
• Current lean burn engines produce more NO and less of the other pollutants at the tailpipe (CO, unburnt gasoline). A poisoned catalyst therefore results in high [NO].
• Rh/Pt/Al2O3 300 ms contact time with NO.
