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The benefit of glass bead supports for efficient gas phase photocatalysis / Sammy W. Verbruggen in Chemical engineering journal, Vol. 174 N° 1 (Octobre 2011) 

Public ISBD [article]  in Chemical engineering journal > Vol. 174 N° 1 (Octobre 2011) . - pp.318–325 Titre : The benefit of glass bead supports for efficient gas phase photocatalysis : Case study of a commercial and a synthesised photocatalyst Type de document : texte imprimé Auteurs : Sammy W. Verbruggen, Auteur ; Stefan Ribbens, Auteur ; Tom Tytgat, Auteur Année de publication : 2012 Article en page(s) : pp.318–325 Note générale : Génie chimique Langues : Anglais (eng) Mots-clés : Photocatalysis  Titanium  dioxide  (TiO2)  Coating  Ethylene  Trititanate  nanotubes Résumé : In the field of photocatalytic air purification, the immobilisation of catalyst particles on support surfaces without loss of photon efficiency is an important challenge. Therefore, an immobilisation method involving a one-step suspension coating of pre-synthesised photocatalysts on glass beads was applied. The various benefits are exemplified in the gas phase photodegradation of ethylene. Coating of glass beads is easy, fast, cheap and offers a more efficient alternative to bulk catalyst pellets. Furthermore, this coating procedure allows to use porous, pre-synthesised catalysts to their full potential, as the surface area and morphology of the initial powder is barely altered after coating, in strong contrast to pelletising. With this technique it became possible to study the gas phase photocatalytic activity of commercial titanium dioxide, trititanate nanotubes and mixed phase anatase/trititanate nanotubes in a packed bed reactor towards the degradation of ethylene without changing the catalyst properties. Coating of glass beads with the photocatalyst revealed the superior activity of the as-prepared nanotubes, compared to TiO2 Aerolyst® 7710 in gaseous phase. ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science/article/pii/S1385894711010965 [article] The benefit of glass bead supports for efficient gas phase photocatalysis : Case study of a commercial and a synthesised photocatalyst [texte imprimé] / Sammy W. Verbruggen, Auteur ; Stefan Ribbens, Auteur ; Tom Tytgat, Auteur . - 2012 . - pp.318–325. Génie chimique Langues : Anglais (eng) in Chemical engineering journal > Vol. 174 N° 1 (Octobre 2011) . - pp.318–325 Mots-clés : Photocatalysis  Titanium  dioxide  (TiO2)  Coating  Ethylene  Trititanate  nanotubes Résumé : In the field of photocatalytic air purification, the immobilisation of catalyst particles on support surfaces without loss of photon efficiency is an important challenge. Therefore, an immobilisation method involving a one-step suspension coating of pre-synthesised photocatalysts on glass beads was applied. The various benefits are exemplified in the gas phase photodegradation of ethylene. Coating of glass beads is easy, fast, cheap and offers a more efficient alternative to bulk catalyst pellets. Furthermore, this coating procedure allows to use porous, pre-synthesised catalysts to their full potential, as the surface area and morphology of the initial powder is barely altered after coating, in strong contrast to pelletising. With this technique it became possible to study the gas phase photocatalytic activity of commercial titanium dioxide, trititanate nanotubes and mixed phase anatase/trititanate nanotubes in a packed bed reactor towards the degradation of ethylene without changing the catalyst properties. Coating of glass beads with the photocatalyst revealed the superior activity of the as-prepared nanotubes, compared to TiO2 Aerolyst® 7710 in gaseous phase. ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science/article/pii/S1385894711010965