Washcoating of cordierite honeycomb with Ce–Zr–Mn mixed oxides for VOC catalytic oxidation

Azalim, S.; Brahmi, Rachid; Agunaou, Mahfoud; Beaurain, Arnaud; Giraudon, Jean-Marc; Lamonier, Jean‐françois

Document type :

Article dans une revue scientifique

DOI :

10.1016/j.cej.2013.03.017

Title :

Washcoating of cordierite honeycomb with Ce–Zr–Mn mixed oxides for VOC catalytic oxidation

Author(s) :

Azalim, S. [Auteur]
School of Chemistry and Chemical Biology [UCD]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Brahmi, Rachid [Auteur]
Du site actif au matériau catalytique (E3) [SAMCat ]
Agunaou, Mahfoud [Auteur]
School of Chemistry and Chemical Biology [UCD]
Beaurain, Arnaud [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Giraudon, Jean-Marc [Auteur]

Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Lamonier, Jean‐françois [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]

Journal title :

Chemical Engineering Journal

Pages :

536-546

Publisher :

Elsevier

Publication date :

2013-05

ISSN :

1385-8947

English keyword(s) :

VOC
Catalytic oxidation
Cordierite honeycomb
Monolith
Ce–Zr–Mn mixed oxides

HAL domain(s) :

Chimie

English abstract : [en]

The application of monolithic catalysts to the VOC removal is a crucial issue for practical applications in order to minimize the pressure drop in the reactor. In this study, cordierite monoliths coated with Mn, Ce and Zr ...
Show more >The application of monolithic catalysts to the VOC removal is a crucial issue for practical applications in order to minimize the pressure drop in the reactor. In this study, cordierite monoliths coated with Mn, Ce and Zr elements were synthesized, characterized and tested in n-butanol oxidation. The “one-pot synthesis” (Ce, Mn and Zr nitrates mixed together) leads to a homogeneous distribution of Mn species whereas the impregnation of Mn over the Ce–Zr washcoated phase does not. Ultrasound experiments used to evaluate the coating adherence show that the washcoated mixed oxide is well anchored on the cordierite. The introduction mode of Mn species is crucial for catalytic activity. The specific reaction rates of n-butanol oxidation are slightly increased when Mn species are impregnated over the Ce–Zr washcoated phase. In comparison with this sample huge catalytic activity improvement is observed in the presence of Mn–Ce–Zr washcoated phase, i.e. when the one pot synthesis procedure is used for the Mn species introduction. The high specific surface area, good dispersion and reducibility of the mixed oxides coated as a thin layer over the cordierite led to the catalytic activity enhancement observed in n-butanol oxidation.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL

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