Artículo
Plasma assisted dry reforming of methane: Syngas and hydrocarbons formation mechanisms
Autor/es | Navascués, Paula
Cotrino Bautista, José González-Elipe, Agustín R. Gómez Ramírez, Ana María |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2023 |
Fecha de depósito | 2023-05-29 |
Publicado en |
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Premios | Premio Mensual Publicación Científica Destacada de la US. Facultad de Física |
Resumen | Plasma reactions of CO2 + CH4 mixtures have been proposed as a suitable process for the dry reforming of
methane. Without specific catalysts, most studies report the formation of CO and H2 as main reaction products
and ... Plasma reactions of CO2 + CH4 mixtures have been proposed as a suitable process for the dry reforming of methane. Without specific catalysts, most studies report the formation of CO and H2 as main reaction products and arise the question whether CHx radicals coming from CH4 may interact with intermediate species formed by electron impact dissociation of CO2, a critical step for the formation of high added value oxygenated compounds. We have addressed this question studying the CO2 + CH4 plasma reaction in a ferroelectric-moderated packedbed reactor varying the reactants ratio. Analysis of the reaction products by mass spectrometry and the plasma reaction intermediates by optical emission spectroscopy suggest that few direct cross-link interactions exist between intermediate plasma species issued from CH4 or CO2. This preliminary evidence is corroborated by experiments using 13CO2 instead 12CO2 as reactant. The isotope labeling procedure has proved that plasma reaction mechanisms of CO2 and CH4 molecules proceed almost independently, with the formation of small amounts of water and the removal of carbon deposits resulting CH4 plasma decomposition as sole evidences of cross reactions. These results highlight the need of using catalysts to promote specific surface reactions for a better control of the selectivity of the process. |
Agencias financiadoras | Ministerio de Ciencia e Innovación (MICIN). España Agencia Estatal de Investigación. España Europea Next Generation. E.U. Junta de Andalucía European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) |
Identificador del proyecto | PID2020-114270RA-I00
PID2020-112620GB-I00 TED2021-130124A-I00 P18-RT-3480 US-1381045 US-1380977 PAIDI-2020 |
Cita | Navascués, P., Cotrino Bautista, J., González-Elipe, A.R. y Gómez Ramírez, A.M. (2023). Plasma assisted dry reforming of methane: Syngas and hydrocarbons formation mechanisms. Fuel Processing Technology, 248 (107827). https://doi.org/10.1016/j.fuproc.2023.107827. |
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