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Honeycomb CuO/Al2O3/cordierite catalyst for selective catalytic reduction of NO by NH3 / Junhua Su in Industrial & engineering chemistry research, Vol. 47 N° 13 (Juillet 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 N° 13 (Juillet 2008) . - p. 4295–4301 Titre : Honeycomb CuO/Al2O3/cordierite catalyst for selective catalytic reduction of NO by NH3 : effect of Al2O3 coating Type de document : texte imprimé Auteurs : Junhua Su, Auteur ; Qingya Liu, Auteur ; Zhenyu Liu, Auteur ; Zhanggen Huang, Auteur Année de publication : 2008 Article en page(s) : p. 4295–4301 Note générale : Bibliogr. p. 4301 Langues : Anglais (eng) Mots-clés : Al2O3-coated  cordierite;  Honeycomb;  Viscosity;  Grain  size Résumé : Al2O3-coated cordierite has been widely used as a catalyst’s support. In this work, three Al2O3 precursors or alumina sols are studied to understand the effect of type, viscosity, and grain size of the sols and Cl− on properties and SCR activities of honeycomb CuO/Al2O3/cordierite catalysts. X-ray diffraction (XRD), N2 adsorption, scanning electron microscopy and energy dispersive X-ray (SEM-EDX) techniques are used for analyses. Results show that the viscosity and average grain size of the sol have significant influences on the amount and stability of the Al2O3 coating. The sol synthesized from AlCl3 and aluminum is the best among the three sols in terms of less coating cycle, stability of the coating, and selective catalytic reduction (SCR) activity. Cl1− introduced in preparation must be washed out because it deactivates the SCR activity. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800105p [article] Honeycomb CuO/Al2O3/cordierite catalyst for selective catalytic reduction of NO by NH3 : effect of Al2O3 coating [texte imprimé] / Junhua Su, Auteur ; Qingya Liu, Auteur ; Zhenyu Liu, Auteur ; Zhanggen Huang, Auteur . - 2008 . - p. 4295–4301. Bibliogr. p. 4301 Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N° 13 (Juillet 2008) . - p. 4295–4301 Mots-clés : Al2O3-coated  cordierite;  Honeycomb;  Viscosity;  Grain  size Résumé : Al2O3-coated cordierite has been widely used as a catalyst’s support. In this work, three Al2O3 precursors or alumina sols are studied to understand the effect of type, viscosity, and grain size of the sols and Cl− on properties and SCR activities of honeycomb CuO/Al2O3/cordierite catalysts. X-ray diffraction (XRD), N2 adsorption, scanning electron microscopy and energy dispersive X-ray (SEM-EDX) techniques are used for analyses. Results show that the viscosity and average grain size of the sol have significant influences on the amount and stability of the Al2O3 coating. The sol synthesized from AlCl3 and aluminum is the best among the three sols in terms of less coating cycle, stability of the coating, and selective catalytic reduction (SCR) activity. Cl1− introduced in preparation must be washed out because it deactivates the SCR activity. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800105p