MIL-100(Fe)-derived catalysts for CO2 conversion via low- and high-temperature reverse water-gas shift reaction
Jesús Gandara Loe,
Alejandro Pinzón Peña,
Juan Luis Martin Espejo,
Luis F. Bobadilla,
Tomás Ramírez Reina,
Laura Pastor-Pérez
Affiliations
Jesús Gandara Loe
Departamento de Química Inorgánica e Instituto de Ciencia de Materiales de Sevilla, Centro Mixto CSIC – Universidad de Sevilla, Av. Américo Vespucio 49, 41092, Sevilla, Spain; Corresponding author.
Alejandro Pinzón Peña
Departamento de Química Inorgánica e Instituto de Ciencia de Materiales de Sevilla, Centro Mixto CSIC – Universidad de Sevilla, Av. Américo Vespucio 49, 41092, Sevilla, Spain
Juan Luis Martin Espejo
Departamento de Química Inorgánica e Instituto de Ciencia de Materiales de Sevilla, Centro Mixto CSIC – Universidad de Sevilla, Av. Américo Vespucio 49, 41092, Sevilla, Spain
Luis F. Bobadilla
Departamento de Química Inorgánica e Instituto de Ciencia de Materiales de Sevilla, Centro Mixto CSIC – Universidad de Sevilla, Av. Américo Vespucio 49, 41092, Sevilla, Spain
Tomás Ramírez Reina
Departamento de Química Inorgánica e Instituto de Ciencia de Materiales de Sevilla, Centro Mixto CSIC – Universidad de Sevilla, Av. Américo Vespucio 49, 41092, Sevilla, Spain; Department of Chemical and Process Engineering, University of Surrey, Guildford, GU2 7XH, UK
Laura Pastor-Pérez
Departamento de Química Inorgánica e Instituto de Ciencia de Materiales de Sevilla, Centro Mixto CSIC – Universidad de Sevilla, Av. Américo Vespucio 49, 41092, Sevilla, Spain; Department of Chemical and Process Engineering, University of Surrey, Guildford, GU2 7XH, UK
Fe-derived catalysts were synthesized by the pyrolysis of MIL-100 (Fe) metal-organic framework (MOF) and evaluated in the reverse water-gas shift (RWGS) reaction. The addition of Rh as a dopant by in-situ incorporation during the synthesis and wet impregnation was also considered. Our characterization data showed that the main active phase was a mixture of α-Fe, Fe3C, and Fe3O4 in all the catalysts evaluated. Additionally, small Rh loading leads to a decrease in the particle size in the active phase. Despite all three catalysts showing commendable CO selectivity levels, the C@Fe* catalyst showed the most promising performance at a temperature below 500 °C, attributed to the in-situ incorporation of Rh during the synthesis. Overall, this work showcases a strategy for designing novel Fe MOF-derived catalysts for RWGS reaction, opening new research opportunities for CO2 utilization schemes.
