A Photocatalytic Active Adsorbent for Gas Cleaning in a Fixed Bed Reactor
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...
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| Format: | Article |
| Language: | English |
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Wiley
2008-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2008/759736 |
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| author | Peter Pucher Rabah Azouani Andrei Kanaev Gernot Krammer |
| author_facet | Peter Pucher Rabah Azouani Andrei Kanaev Gernot Krammer |
| author_sort | Peter Pucher |
| collection | DOAJ |
| description | 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 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 user-defined longer residence time. |
| format | Article |
| id | doaj-art-10213670a67041399cb48d6082fa4c4b |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2008-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-10213670a67041399cb48d6082fa4c4b2025-02-03T01:22:05ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2008-01-01200810.1155/2008/759736759736A Photocatalytic Active Adsorbent for Gas Cleaning in a Fixed Bed ReactorPeter Pucher0Rabah Azouani1Andrei Kanaev2Gernot Krammer3Department of Chemical Apparatus Design, Particle Technology and Combustion, Graz University of Technology, Inffeldgasse 25/B, 8010 Graz, AustriaLaboratoire d'Ingénierie des Matériaux et des Hautes Pressions, CNRS, Institut Galilée, Université Paris-Nord, 93430 Villetaneuse, FranceLaboratoire d'Ingénierie des Matériaux et des Hautes Pressions, CNRS, Institut Galilée, Université Paris-Nord, 93430 Villetaneuse, FranceDepartment of Energy and Process Engineering, Norwegian University of Science and Technology, Kolbjørn Hejes vei 1, 7491 Trondheim, NorwayEfficient 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 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 user-defined longer residence time.http://dx.doi.org/10.1155/2008/759736 |
| spellingShingle | Peter Pucher Rabah Azouani Andrei Kanaev Gernot Krammer A Photocatalytic Active Adsorbent for Gas Cleaning in a Fixed Bed Reactor International Journal of Photoenergy |
| title | A Photocatalytic Active Adsorbent for Gas Cleaning in a Fixed Bed Reactor |
| title_full | A Photocatalytic Active Adsorbent for Gas Cleaning in a Fixed Bed Reactor |
| title_fullStr | A Photocatalytic Active Adsorbent for Gas Cleaning in a Fixed Bed Reactor |
| title_full_unstemmed | A Photocatalytic Active Adsorbent for Gas Cleaning in a Fixed Bed Reactor |
| title_short | A Photocatalytic Active Adsorbent for Gas Cleaning in a Fixed Bed Reactor |
| title_sort | photocatalytic active adsorbent for gas cleaning in a fixed bed reactor |
| url | http://dx.doi.org/10.1155/2008/759736 |
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