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Microreactors technology for hydrogen purification: Effect of the catalytic layer thickness on CuOx/CeO2-coated microchannel reactors for the PROX reaction

Opened Access Microreactors technology for hydrogen purification: Effect of the catalytic layer thickness on CuOx/CeO2-coated microchannel reactors for the PROX reaction

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Autor: Laguna Espitia, Oscar Hernando
González Castaño, Míriam
Centeno Gallego, Miguel Ángel
Odriozola Gordón, José Antonio
Departamento: Universidad de Sevilla. Departamento de Química Inorgánica
Fecha: 2015
Publicado en: Chemical Engineering Journal, 275, 45-52.
Tipo de documento: Artículo
Resumen: Two blocks of microreactors composed by 100 microchannels and coated, respectively, with 150 and 300 mg of a CuOx/CeO2 catalyst, were prepared and tested in the preferential oxidation of CO in presence of H2 (PROX). The deposition of different amount of catalyst resulted in different catalytic layer thicknesses thus modifying the catalytic performances of the microreactor. The evaluation of the main reaction variables (the space velocity, the O2-to-CO ratio and the presence of H2O and/or CO2 in the stream) was performed over both microreactors and compared to that of the parent powder catalyst. The least loaded microreactor, with a coating thickness around 10 μm, presented the highest CO conversion and selectivity levels at temperatures below 160 ºC. This result evidences i) the improvement of the catalytic performances got by the structuration of the powder catalyst and ii) the importance of the selection of the adequate thickness of the catalytic layer on the microreactor, which hav...
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Cita: Laguna Espitia, O.H., González Castaño, M., Centeno Gallego, M.Á. y Odriozola Gordón, J.A. (2015). Microreactors technology for hydrogen purification: Effect of the catalytic layer thickness on CuOx/CeO2-coated microchannel reactors for the PROX reaction. Chemical Engineering Journal, 275, 45-52.
Tamaño: 250.3Kb
Formato: PDF

URI: https://hdl.handle.net/11441/72277

DOI: 10.1016/j.cej.2015.04.023

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