A Photocatalytic Active Adsorbent for Gas Cleaning in a Fixed Bed Reactor

Peter Pucher*, Gernot Krammer, Andrei Kanaev, Ranah Azouani

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Efficient photocatalysis for gas cleaning purposes requires a large accessible, illuminated active surface in a simple and compact reactor. Conventional concepts use powdered catalysts, which are nontransparent. Hence a uniform distribution of light is difficult to be attained. Our approach is based on a coarse granular, UV-A light transparent, and highly porous adsorbent that can be used in a simple fixed bed reactor. A novel sol-gel process with rapid micro mixing is used to coat a porous silica substrate with -based nanoparticles. The resulting material posses a high adsorption capacity and a photocatalytic activity under UV-A illumination (PCAA = photocatalytic active adsorbent). Its photocatalytic performance was studied on the oxidation of trichloroethylene (TCE) in a fixed bed reactor setup in continuous and discontinuous operation modes. Continuous operation resulted in a higher conversion rate due to less slip while discontinuous operation is superior for a total oxidation to due to a user-defined longer residence time
Original languageEnglish
Article number759736
Number of pages7
JournalInternational Journal of Photoenergy
Publication statusPublished - 2008

Treatment code (Nähere Zuordnung)

  • Application
  • Experimental

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