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Title: The benefit of glass bead supports for efficient gas phase photocatalysis: Case study of a commercial and a synthesised photocatalyst
Authors: Verbruggen, Sammy ×
Ribbens, Stefan
Tytgat, Tom
Hauchecorne, Birger
Smits, Marianne
Meynen, Vera
Cool, Pegie
Martens, Johan
Lenaerts, Silvia #
Issue Date: Oct-2011
Publisher: Elsevier
Series Title: Chemical Engineering Journal vol:174 issue:1 pages:318-325
Abstract: 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 (R) 7710 in gaseous phase. (C) 2011 Elsevier B.V. All rights reserved.
URI: 
ISSN: 1385-8947
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Centre for Surface Chemistry and Catalysis
× corresponding author
# (joint) last author

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