De-NOx in alternative lean/rich atmospheres on La1−xSrxCoO3 perovskites

Xin-Gang Li; Yan-Hua Dong; Hui Xian; Willinton Yesid Hernández; Ming Meng; Hong-Hu Zou; Ai-Jing Ma; Tian-Yong Zhang; Zheng Jiang; Noritatsu Tsubaki; Philippe Vernoux

doi:10.1039/C1EE01726H

De-NO_x in alternative lean/rich atmospheres on La_1−xSr_xCoO₃ perovskites†

Xin-Gang Li,*^a Yan-Hua Dong,^a Hui Xian,^a Willinton Yesid Hernández,^b Ming Meng,*^a Hong-Hu Zou,^a Ai-Jing Ma,^a Tian-Yong Zhang,^a Zheng Jiang,^c Noritatsu Tsubaki^d and Philippe Vernoux^b

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^a Tianjin Key Laboratory of Applied Catalysis Science & Technology, School of Chemical Engineering & Technology, Tianjin University, Tianjin, P. R. China
E-mail: xingang_li@tju.edu.cn, mengm@tju.edu.cn
Fax: +86-22-27892275
Tel: +86-22-27892275

^b Université Lyon 1, CNRS, UMR 5256, IRCELYON, Institut de recherches sur la catalyse et l'environnement de Lyon, 2 avenue Albert Einstein, Villeurbanne, France

^c Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, P. R. China

^d Department of Applied Chemistry, School of Engineering, University of Toyama, Toyama, Japan

Abstract

Herein, we introduce a La_1−xSr_xCoO₃ perovskite catalyst, substituting for Pt containing LNT catalysts, to remove efficiently NO_x from lean-burn engines. The NO_x storage/reduction occurred alternatively on the perovskite in successive lean/rich atmospheres, and the NO_x conversion reached 71.4% with 100% selectivity to N₂ at 300 °C.

Energy & Environmental Science

De-NO_x in alternative lean/rich atmospheres on La_1−xSr_xCoO₃ perovskites†

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De-NO_x in alternative lean/rich atmospheres on La_1−xSr_xCoO₃ perovskites

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