Titre :

Materials chemistry for catalysis : Coating of catalytic oxides on metallic foams

Auteur(s) :

Bordes-Richard, E. [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Essakhi, A. [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Le Courtois, V. [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Löfberg, Axel [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Meille, V. [Auteur]
Laboratoire de Génie des Procédés Catalytiques [LGPC]
Mutel, B. [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Paul, S. [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Supiot, Philippe [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Rodriguez, Ph. [Auteur]
Laboratoire de Génie des Procédés Catalytiques [LGPC]

Titre de la revue :

Microporous and Mesoporous Materials

Pagination :

81-88

Éditeur :

Elsevier

Date de publication :

2010-10-29

ISSN :

1387-1811

Discipline(s) HAL :

Chimie/Matériaux

Résumé en anglais : [en]

Catalytic structured reactors are designed to improve both heat and mass transfers during reactions in the presence of catalytic layers. The know-how acquired in the coating of stainless steel walls by catalytic layers of ...
Lire la suite >Catalytic structured reactors are designed to improve both heat and mass transfers during reactions in the presence of catalytic layers. The know-how acquired in the coating of stainless steel walls by catalytic layers of VOx/TiO2, active in the abatement of volatile organic compounds and in the production of chemical intermediates, was extended to metallic foams. The preferred and original way was to first make a deposit of a silica-like primer by cold plasma assisted polymerization of tetramethyldisiloxane in the presence of oxygen. After mineralisation, this layer was supposed to act as a barrier against poisoning by elements of the metallic substrate, as well as a stabilizer of the catalyst layers. The cells of the foam were homogeneously covered by a 5 μm-thick polysiloxane film ending in ca. 1 μm thick silica after calcination. After studying the textural properties and zeta potential of aqueous suspensions of TiO2 particles, the silica-coated foams were dipped in a 37 wt% aqueous suspension of TiO2-anatase. The final VOx/TiO2/SiO2/foams were obtained by grafting polyvanadate specie in sol-gel medium. At every step of coating, the multilayer materials were studied mainly by X-ray Photoelectron Spectroscopy and Electron Probe Micro-Analysis. Moreover the mechanical and chemical stability of the successive coatings was checked.Lire moins >

Langue :

Anglais

Vulgarisation :

Non

Collections :

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

Source :

Harvested from HAL