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Simultaneous removal of soot and NOx over the (La1.7Rb0.3CuO4)x/nmCeO2 nanocomposite catalysts / Jian Liu in Industrial & engineering chemistry research, Vol. 49 N° 7 (Avril 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 7 (Avril 2010) . - pp. 3112–3119 Titre : Simultaneous removal of soot and NOx over the (La1.7Rb0.3CuO4)x/nmCeO2 nanocomposite catalysts Type de document : texte imprimé Auteurs : Jian Liu, Auteur ; Zhen Zhao, Auteur ; Chunming Xu, Auteur Année de publication : 2010 Article en page(s) : pp. 3112–3119 Note générale : Industial Chemistry Langues : Anglais (eng) Mots-clés : Soot  NOx  Nanocomposite  Catalysts Résumé : Nanometric CeO2-supported perovskite-liked La1.7Rb0.3CuO4 oxide catalysts with different loading amounts were obtained by the method of ultrasonic-assisted incipient-wetness impregnation. All of the catalysts were calcined at 700 °C for 6 h and characterized by means of BET, XRD, IR, and UV−vis−NIR. These materials were tested for the simultaneous removal of NOx and soot in the temperature range from 200 to 600 °C. As compared to nanometric CeO2 support particles (nmCeO2) or pure La1.7Rb0.3CuO4 perovskite-liked catalyst, the catalytic activities of all of the supported catalysts were remarkably enhanced. The temperatures for soot combustion of Tm decreased and the productivities of N2 increased, and the activities of the catalysts increased with the perovskite-liked oxide loading amount. On the basis of in situ DRIFT characterization, NO oxidation, and O2-TPD results, a reaction mechanism for the simultaneous removal of NOx and soot over (La1.7Rb0.3CuO4)x/nmCeO2 was proposed. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100004m [article] Simultaneous removal of soot and NOx over the (La1.7Rb0.3CuO4)x/nmCeO2 nanocomposite catalysts [texte imprimé] / Jian Liu, Auteur ; Zhen Zhao, Auteur ; Chunming Xu, Auteur . - 2010 . - pp. 3112–3119. Industial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 7 (Avril 2010) . - pp. 3112–3119 Mots-clés : Soot  NOx  Nanocomposite  Catalysts Résumé : Nanometric CeO2-supported perovskite-liked La1.7Rb0.3CuO4 oxide catalysts with different loading amounts were obtained by the method of ultrasonic-assisted incipient-wetness impregnation. All of the catalysts were calcined at 700 °C for 6 h and characterized by means of BET, XRD, IR, and UV−vis−NIR. These materials were tested for the simultaneous removal of NOx and soot in the temperature range from 200 to 600 °C. As compared to nanometric CeO2 support particles (nmCeO2) or pure La1.7Rb0.3CuO4 perovskite-liked catalyst, the catalytic activities of all of the supported catalysts were remarkably enhanced. The temperatures for soot combustion of Tm decreased and the productivities of N2 increased, and the activities of the catalysts increased with the perovskite-liked oxide loading amount. On the basis of in situ DRIFT characterization, NO oxidation, and O2-TPD results, a reaction mechanism for the simultaneous removal of NOx and soot over (La1.7Rb0.3CuO4)x/nmCeO2 was proposed. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100004m