Conception et fabrication par stéréolithographie d'un catalyseur monolithique en vue de l'intensification du procédé photocatalytique pour la dépollution de l'air

Abstract : The aim of the work is to improve the efficiency of a photocatalytic tubular reactor for VOCs abatement, while loading it with structured catalytic supports impregnated of TiO2.Thanks to a photocatalytic set-up , the efficiency of the reactor is followed by measuring the conversion rate of a model pollutant: methanol. Different geometries of support have been made by stereolithography. Among all tested geometries, the alveolar structure, composed of vertical channels for light penetration, and horizontal channels for the circulation of the gas flow, leads to an optimal degradation of the pollutant. The modelling of the reactor, taking into account the light distribution, shows that the mass transfer is limiting when the diameter of the channels is smaller than 4 mm. On the other hand, when the diameter of the channels is bigger than 5 mm, the lack of efficiency is due to a reduction of the absorption of the incident light by the catalytic surface.
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Mark Furman. Conception et fabrication par stéréolithographie d'un catalyseur monolithique en vue de l'intensification du procédé photocatalytique pour la dépollution de l'air. Autre. Institut National Polytechnique de Lorraine, 2006. Français. ⟨NNT : 2006INPL096N⟩. ⟨tel-01752786⟩

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