118065 20240319080952.0 doi 10.1016/j.fuel.2022.124075 sideral 128825 ART-2022-128825 eng Aragüés-Aldea, P. Improving CO2 methanation performance by distributed feeding in a Ni-Mn catalyst fixed bed reactor 2022 Access copy available to the general public Unrestricted It has been successfully demonstrated the effect of feeding reactants in distributed manner for the reaction of methanation of CO2. This operation mode has improved not only the selectivity towards CH4, but also the overall process performance. A fixed bed reactor, loaded with Ni-Mn based catalyst, was operated co-feeding both CO2 and H2, but alternatively feeding one of them through several lateral inlets. Preserving the same global W/FCO2 ratio, the side distribution of CO2 allowed to clearly increase the activity of the process (e.g., at 375 °C, the conversion with distributed feeding was around 35% higher than that for the conventional one: XCO2 = 0.12 vs. XCO2 = 0.09). Furthermore, a substantially lower selectivity towards non-desired CO was obtained at any conversion level (e.g., SCO = 0.45 vs. SCO = 0.70, when XCO2 = 0.10). In addition, a more homogeneous temperature profile could be achieved in the bed without increasing the severity of hot spots appearance. On the contrary, side distribution of H2 always led to similar or worse results than for the conventional co-feeding configuration. info:eu-repo/grantAgreement/ES/DGA-FSE/T43-20R info:eu-repo/grantAgreement/ES/MICINN/PID2019-104866RB-I00 info:eu-repo/grantAgreement/ES/MINECO/CTQ2016-77277-R info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 7.4 2022 ENGINEERING, CHEMICAL 19 / 141 = 0.135 2022 Q1 T1 ENERGY & FUELS 32 / 119 = 0.269 2022 Q2 T1 1.38 2022 Chemical Engineering (miscellaneous) 2022 Q1 Organic Chemistry 2022 Q1 Fuel Technology 2022 Q1 Energy Engineering and Power Technology 2022 Q1 12.2 2022 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Sanz-Martínez, A. Universidad de Zaragoza (orcid)0000-0002-6762-0971 Durán, P. (orcid)0000-0003-2898-1085 Francés, E. Universidad de Zaragoza (orcid)0000-0003-3181-195X Peña, J.A. Universidad de Zaragoza (orcid)0000-0002-8383-4996 Herguido, J. Universidad de Zaragoza (orcid)0000-0003-1940-9597 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 321 (2022), 124075 [7 pp.] Fuel Fuel 0016-2361 2386812 http://zaguan.unizar.es/record/118065/files/texto_completo.pdf Versión publicada 2462573 http://zaguan.unizar.es/record/118065/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:118065 articulos driver 2024-03-18-13:08:51 ARTICLE