Abstract
The Pt/Pd/Rh three-way catalyst was prepared using a high-performance Ce0.55Zr0.35Y0.05La0.05O2 solid solution and high surface area La-stabilized alumina (La/Al2O3). The activity and durability of the catalysts under simulated conditions and actual vehicle test conditions were studied. The results revealed that Ce0.55Zr0.35Y0.05La0.05O2 solid solution maintains superior textual and oxygen storage properties, and La/Al2O3 has superior textual properties. The catalyst had high low-temperature activity, wide air-to-fuel ratio windows, and good thermal stability. The results from the emission test of a motorcycle showed that the catalyst can meet Euro III emission requirements.
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