Improved Performances of a Fluidized Bed Photoreactor by a Microscale Illumination System
The performances of a gas-solid two-dimensional fluidized bed reactor in photocatalytic selective oxidation reactions, irradiated with traditional UV lamps or with a microscale illumination system based on UV emitting diodes (UVA-LEDs), have been compared. In the photocatalytic oxidative dehydrogena...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2009-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2009/709365 |
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| author | Paolo Ciambelli Diana Sannino Vincenzo Palma Vincenzo Vaiano Roberto S. Mazzei |
| author_facet | Paolo Ciambelli Diana Sannino Vincenzo Palma Vincenzo Vaiano Roberto S. Mazzei |
| author_sort | Paolo Ciambelli |
| collection | DOAJ |
| description | The performances of a gas-solid two-dimensional fluidized bed reactor in photocatalytic selective oxidation reactions, irradiated with traditional UV lamps or with a microscale illumination system based on UV emitting diodes (UVA-LEDs), have been compared. In the photocatalytic oxidative dehydrogenation of cyclohexane to benzene on MoOx/TiO2-A12O3
catalyst the use of UVA-LEDs modules allowed to achieve a cyclohexane conversion and benzene yield higher than those obtained with traditional UV lamps. The better performances with UVA-LEDs are due to the UVA-LEDs small dimensions and small-angle emittance, which allow photons beam be directed towards the photoreactor windows, reducing the dispersion outside of photoreactor or the optical path length. As a consequence, the effectively illuminated mass of catalyst is greater. We have found that this illumination system is efficient for photo-oxidative dehydrogenation of cyclohexane to cyclohexene on sulphated MoOx/𝛾-A12O3
and ethanol to acetaldehyde on VOx/TiO2. |
| format | Article |
| id | doaj-art-92502f6981a945ce8c75296ddaa70d6a |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2009-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-92502f6981a945ce8c75296ddaa70d6a2025-02-03T05:58:48ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2009-01-01200910.1155/2009/709365709365Improved Performances of a Fluidized Bed Photoreactor by a Microscale Illumination SystemPaolo Ciambelli0Diana Sannino1Vincenzo Palma2Vincenzo Vaiano3Roberto S. Mazzei4Department of Chemical and Food Engineering, University of Salerno, Via Ponte Don Melillo, 84084 Fisciano (Salerno), ItalyDepartment of Chemical and Food Engineering, University of Salerno, Via Ponte Don Melillo, 84084 Fisciano (Salerno), ItalyDepartment of Chemical and Food Engineering, University of Salerno, Via Ponte Don Melillo, 84084 Fisciano (Salerno), ItalyDepartment of Chemical and Food Engineering, University of Salerno, Via Ponte Don Melillo, 84084 Fisciano (Salerno), ItalyDepartment of Chemical and Food Engineering, University of Salerno, Via Ponte Don Melillo, 84084 Fisciano (Salerno), ItalyThe performances of a gas-solid two-dimensional fluidized bed reactor in photocatalytic selective oxidation reactions, irradiated with traditional UV lamps or with a microscale illumination system based on UV emitting diodes (UVA-LEDs), have been compared. In the photocatalytic oxidative dehydrogenation of cyclohexane to benzene on MoOx/TiO2-A12O3 catalyst the use of UVA-LEDs modules allowed to achieve a cyclohexane conversion and benzene yield higher than those obtained with traditional UV lamps. The better performances with UVA-LEDs are due to the UVA-LEDs small dimensions and small-angle emittance, which allow photons beam be directed towards the photoreactor windows, reducing the dispersion outside of photoreactor or the optical path length. As a consequence, the effectively illuminated mass of catalyst is greater. We have found that this illumination system is efficient for photo-oxidative dehydrogenation of cyclohexane to cyclohexene on sulphated MoOx/𝛾-A12O3 and ethanol to acetaldehyde on VOx/TiO2.http://dx.doi.org/10.1155/2009/709365 |
| spellingShingle | Paolo Ciambelli Diana Sannino Vincenzo Palma Vincenzo Vaiano Roberto S. Mazzei Improved Performances of a Fluidized Bed Photoreactor by a Microscale Illumination System International Journal of Photoenergy |
| title | Improved Performances of a Fluidized Bed Photoreactor by a Microscale Illumination System |
| title_full | Improved Performances of a Fluidized Bed Photoreactor by a Microscale Illumination System |
| title_fullStr | Improved Performances of a Fluidized Bed Photoreactor by a Microscale Illumination System |
| title_full_unstemmed | Improved Performances of a Fluidized Bed Photoreactor by a Microscale Illumination System |
| title_short | Improved Performances of a Fluidized Bed Photoreactor by a Microscale Illumination System |
| title_sort | improved performances of a fluidized bed photoreactor by a microscale illumination system |
| url | http://dx.doi.org/10.1155/2009/709365 |
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