Photocatalytic Oxidation of VOCs in Gas Phase Using Capillary Microreactors with Commercial TiO2 (P25) Fillings
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Título: | Photocatalytic Oxidation of VOCs in Gas Phase Using Capillary Microreactors with Commercial TiO2 (P25) Fillings |
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Autor/es: | Fernández-Catalá, Javier | Berenguer-Murcia, Ángel | Cazorla-Amorós, Diego |
Grupo/s de investigación o GITE: | Materiales Carbonosos y Medio Ambiente |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | TiO2 | Microreactor | Photocatalytic activity | VOCs | Propene |
Área/s de conocimiento: | Química Inorgánica |
Fecha de publicación: | 6-jul-2018 |
Editor: | MDPI |
Cita bibliográfica: | Fernández-Catalá J, Berenguer-Murcia Á, Cazorla-Amorós D. Photocatalytic Oxidation of VOCs in Gas Phase Using Capillary Microreactors with Commercial TiO2 (P25) Fillings. Materials. 2018; 11(7):1149. doi:10.3390/ma11071149 |
Resumen: | The elimination of volatile organic compounds (VOCs) at low concentration is a subject of great interest because these compounds are very harmful for the environment and human health. In this work, we have developed an easy methodology to immobilize a benchmark photocatalyst (P25) inside a capillary microreactor (Fused silica capillary with UV transparent coating) without any previous treatment. For this purpose, a dispersion of the sample (P25) in EtOH was used obtaining a packed bed configuration. We have improved the immobilization of the benchmark photocatalyst (P25) inside the capillary incorporating a surfactant (F-127) to generate porosity inside the microreactor to avoid severe pressure drops (∆P < 0.5 bar). The resulting capillaries were characterized by Scanning Electron Microscopy (SEM). These microreactors show a good performance in the abatement of propene (VOC) under flow conditions per mol of active phase (P25) due to an improved mass transfer when the photocatalyst is inside the capillary. Moreover, the prepared microreactors present a higher CO2 production rate (mole CO2/(mole P25·s)) with respect to the same TiO2 operating in a conventional reactor. The microreactor with low pressure drop is very interesting for the abatement of the VOCs since it improves the photoactivity of P25 per mol of TiO2 operating at near atmospheric pressure. |
Patrocinador/es: | The authors thank MINECO (Project CTQ2015-66080-R, MINECO/FEDER) for financial support. JFC thanks MINECO for a researcher formation grant (BES-2016-078079). |
URI: | http://hdl.handle.net/10045/77347 |
ISSN: | 1996-1944 |
DOI: | 10.3390/ma11071149 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.3390/ma11071149 |
Aparece en las colecciones: | INV - MCMA - Artículos de Revistas |
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