doi:10.1021/acs.energyfuels.1c01682engTarifa, PilarMegías-Sayago, CristinaCazaña, FernandoGonzález-Martín, MiguelLatorre, NievesRomeo, EvaDelgado, Juan JoséMonzón, AntonioHighly active Ce- And Mg-promoted Ni catalysts supported on cellulose-derived carbon for low-temperature CO2 methanationART-2021-126817The CO2 methanation performance of Mg- and/or Ce-promoted Ni catalysts supported on cellulose-derived carbon (CDC) was investigated. The samples, prepared by biomorphic mineralization techniques, exhibit pore distributions correlated to the particle sizes, revealing a direct effect of the metal content in the textural properties of the samples. The catalytic performance, evaluated as CO2 conversion and CH4 selectivity, reveals that Ce is a better promoter than Mg, reaching higher conversion values in all of the studied temperature range (150-500 °C). In the interval of 350-400 °C, Ni-Mg-Ce/CDC attains the maximum yield to methane, 80%, reaching near 100% CH4 selectivity. Ce-promoted catalysts were highly active at low temperatures (175 °C), achieving 54% CO2 conversion with near 100% CH4 selectivity. Furthermore, the large potential stability of the Ni-Mg-Ce/CDC catalyst during consecutive cycles of reaction opens a promising route for the optimization of the Sabatier process using this type of catalyst.2021http://zaguan.unizar.es/record/15204310.1021/acs.energyfuels.1c01682http://zaguan.unizar.es/record/152043oai:zaguan.unizar.es:152043info:eu-repo/grantAgreement/ES/MICINN/BES-2014-069010info:eu-repo/grantAgreement/ES/MICINN/ENE2013-44350-Rinfo:eu-repo/grantAgreement/ES/MICINN-FEDER/ENE2017-82451-C3info:eu-repo/grantAgreement/ES/MICINN/FJC2018-037162-IEnergy and Fuels 35, 21 (2021), 17212-17224byhttps://creativecommons.org/licenses/by/4.0/deed.esinfo:eu-repo/semantics/openAccess