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%).

引用

页数：7

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