Highly active Ce- And Mg-promoted Ni catalysts supported on cellulose-derived carbon for low-temperature CO2 methanation

Tarifa, Pilar (Universidad de Zaragoza) ; Megías-Sayago, Cristina (Universidad de Zaragoza) ; Cazaña, Fernando (Universidad de Zaragoza) ; González-Martín, Miguel (Universidad de Zaragoza) ; Latorre, Nieves (Universidad de Zaragoza) ; Romeo, Eva (Universidad de Zaragoza) ; Delgado, Juan José ; Monzón, Antonio (Universidad de Zaragoza)

Resumen: The 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.

Idioma: Inglés

DOI: 10.1021/acs.energyfuels.1c01682

Año: 2021

Publicado en: Energy and Fuels 35, 21 (2021), 17212-17224
ISSN: 0887-0624

Factor impacto JCR: 4.654 (2021)

Categ. JCR: ENGINEERING, CHEMICAL rank: 45 / 142 = 0.317 (2021) - Q2 - T1
Categ. JCR: ENERGY & FUELS rank: 63 / 119 = 0.529 (2021) - Q3 - T2

Factor impacto CITESCORE: 6.3 - Energy (Q1) - Chemical Engineering (Q2)

Factor impacto SCIMAGO: 0.822 - Energy Engineering and Power Technology (Q1) - Chemical Engineering (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/MICINN/BES-2014-069010
Financiación: info:eu-repo/grantAgreement/ES/MICINN/ENE2013-44350-R
Financiación: info:eu-repo/grantAgreement/ES/MICINN-FEDER/ENE2017-82451-C3
Financiación: info:eu-repo/grantAgreement/ES/MICINN/FJC2018-037162-I

Tipo y forma: Article (Published version)

Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)