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《Precious Metals》 2004-01
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Effects of Rare Earth Perovskite Composite Oxides on Purifying Auto Emission Catalyst

BAI Ping,HUANG Rongguang,LU Jun,HE Xiaokun,HUAN Yuanfeng (Kunming Institute of Precious Metals, Kunming, Yunnan, 650221, China)  
The composition, working principle and types of purifying auto emission catalyst was presented. The effects of rare earth perovskite composite oxides on purifying auto emission catalyst were summarized according to the relevant reports at home and abroad, which include improving the store function of oxygen, increasing catalytic activity and heat stability of specific surface layer and so on. The effects of rare earth on purifying auto emission was illustrated from technology and theory. Especially in catalytic converter, CeO2 has its tangible result in both promotion and stability. With rapid growth of automobile industry, a good prospect of application of rare earth oxides in auto emission catalyst is expected.
【Fund】: 云南省国际合作计划项目(2001-GH-03)
【CateGory Index】: U464
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