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

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

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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, Latest Product Releases & Innovations – Stay Updated! 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 TiO2-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 CO2 due to a il barone wine user-defined longer residence time.