Effect of support on a catalytic converter for removing CO and HC emissions from a two-stroke motorcycle

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题名:	Effect of support on a catalytic converter for removing CO and HC emissions from a two-stroke motorcycle
作者:	Lee,CH;Chen,YW
贡献者:	化學工程與材料工程學系
关键词:	NOBLE-METAL CATALYSTS;3-WAY CATALYSTS;OXYGEN STORAGE;EXHAUST;OXIDATION;CERIA
日期:	1997
上传时间:	2010-06-29 17:30:46 (UTC+8)
出版者:	中央大學
摘要:	The effect of support on the noble metal catalysts for carbon monoxide and hydrocarbon oxidation was investigated. The reactions were performed under the stoichiometric and oxygen-deficient conditions. Under the stoichiometric point, the activities of the powder catalysts for CO and C3H6 oxidation are in the order Pt/K2O/Al2O3 > Pt/Al2O3 > Pt/Al2O3-SiO2, that is, the same as the order of basicity of these catalysts. Under an oxygen-deficient condition, Pt supported on an acidic support, Al2O3-SiO2, exhibits the higher C3H6 conversion and the higher activity for the steam re-forming reaction. Ln contrast, Pt supported on a basic support, K2O/Al2O3, exhibits the higher CO conversion and the higher activity for the water-gas shift reaction, The order of activity of the powder catalysts for the water-gas shift reaction is the same as the order of basicity of these catalysts. On the other hand, the testing results of the monolithic PtRh-containing catalysts by the simulative gases and the ECE-40 mode driving cycle also reveal the same trend as that of the Pt powder catalysts. Furthermore, the addition of K2O on PtRh/Al2O3-CeO2 not only increases the basicity of the catalyst but also significantly reduces the CO emission under the ECE-40 mode driving cycle test. Therefore, K2O could be a promising additive to a catalytic converter of a two-stroke motorcycle since it can significantly enhance CO conversion.
關聯:	INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
显示于类别:	[化學工程與材料工程研究所] 期刊論文

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