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Three-Way Catalyst Meeting Euro III Emission Standards for Motorcycles

✍ Scribed by Chunming HU; Ming ZHAO; Hairong WANG; Shanhu CHEN; Maochu GONG; Zhonghua SHI; Yaoqiang CHEN

Book ID
104452798
Publisher
Elsevier Science
Year
2008
Weight
212 KB
Volume
29
Category
Article
ISSN
1872-2067

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✦ Synopsis

The Pt/Pd/Rh three-way catalyst was prepared using a high-performance Ce 0.55 Zr 0.35 Y 0.05 La 0.05 O 2 solid solution and high surface area La-stabilized alumina (La/Al 2 O 3 ). The activity and durability of the catalysts under simulated conditions and actual vehicle test conditions were studied. The results revealed that Ce 0.55 Zr 0.35 Y 0.05 La 0.05 O 2 solid solution maintains superior textual and oxygen storage properties, and La/Al 2 O 3 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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The Ce 0.45 Zr 0.45 Y 0.05 La 0.05 O 2 oxygen storage material and La-stabilized alumina (La-Al 2 O 3 ) were prepared. After aging at 1000ΒΊC for 5 h, Ce 0.45 Zr 0.45 Y 0.05 La 0.05 O 2 maintains superior textual and oxygen storage properties, and La-Al 2 O 3 has superior textual properties. Medium-c