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Heterogeneous photocatalysis of butanol and methyl ethyl ketone—characterization of catalyst and dynamic study

Monneyron, Pierre and Manero, Marie-Hélène and Foussard, Jean-Noël and Benoit-Marquié, Florence and Maurette, Marie-Thérèse Heterogeneous photocatalysis of butanol and methyl ethyl ketone—characterization of catalyst and dynamic study. (2003) Chemical Engineering Science, 58 (3-6). 971-978. ISSN 0009-2509

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Official URL: https://doi.org/10.1016/S0009-2509(02)00637-1

Abstract

New titanium dioxide (TiO2) based catalysts were prepared by impregnating commercial zeolites in pellets form using a sol–gel technique. Characterization was done with chemical analysis, X-Ray diffraction, scanning electron microscopy, and BET measurements, together with volatile organic compounds (VOC) adsorption equilibrium experiments. TiO2 happened to fix on the inert binder leading to a close intimacy of mixing with the zeolites crystallites, without significant modification of support properties. A diffusion cell was used to produce dilute polluted air streams for dynamic experiments, in which adsorption and photodegradation phases were alternatively carried out. Regeneration of adsorbent was evaluated regarding experimental conditions. Through a comparison with the results obtained on impregnated mesoporous borosilicate beads, it was clarified that zeolite supports had no effect on 1-butanol (BuOH) photooxidation mechanisms. Yet, evidence for mass transfer limitation was found, and attributed to intracrystalline diffusion in zeolites.

Item Type:Article
HAL Id:hal-02067359
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: Loetitia MOYA
Deposited On:14 Mar 2019 10:09

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