Selective NOx reduction in H2 + NO + O2 reaction under oxygen-rich condition over Pt/rare earth oxide catalysts

被引：0
|
作者：
Itoh, M. [1 ]
Motoki, K. [1 ]
Takehara, M. [1 ]
Saito, M. [1 ]
Machida, K. [1 ]
机构：
[1] Osaka Univ, Ctr Adv Sci & Innovat, Suita, Osaka, Japan
来源：
IUMRS-ICA 2008 SYMPOSIUM AA. RARE-EARTH RELATED MATERIAL PROCESSING AND FUNCTIONS | 2008年 / 1卷
关键词：
D O I：
10.1088/1757-8981/1/1/012029
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Pt supported rare earth oxide (CeO2, Pr6O11, Eu2O3, Gd2O3) catalysts were prepared by a conventional impregnation method to evaluate their selective catalytic reduction properties of NOx with H-2 under excess oxygen condition. Among them, good NOx reduction activity was obtained only on the Pt/CeO2 catalyst. Specific adsorption peaks assigned to NO3- species were observed in its diffuse reflectance infrared Fourier transform spectrum (DRIFTs) for the Pt/CeO2 catalyst, indicating that NOx reduction proceeds via formation of such nitrate. DeNO(x) properties of Pt/CeO2 were further improved by using a solvothermal deposition technique. The catalyst prepared by physically mixing the CeO2 support with Pt particles deposited by a solvothermal method, consequently, gave the best deNO(x) performance (NO conversion: ca. 80%, N-2 selectivity: ca. 75%).
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页数：7
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