CO2 Hydrogenation
over Ni–Co/Ce0.6Zr0.4O2 Catalysts
for Light Hydrocarbons
under Mild Conditions

Martínez-Jiménez, Víctor; Flores, J. Gabriel; Baumgartner, Bettina; Obeso, Juan L.; Flores, Catalina V.; Weckhuysen, Bert M.; Rosas-Cedillo, J. R.; Marín-Rosas, Pablo; Perez Hernandez, Raul; Gutierrez-Alejandre, Aida; González-Zamora, Eduardo; Ibarra, Ilich A.; Peralta, Ricardo A.; de los Reyes, Jose Antonio

doi:10.1021/acsaenm.5c00055.s001

CO₂ Hydrogenation over Ni–Co/Ce_0.6Zr_0.4O₂ Catalysts for Light Hydrocarbons under Mild Conditions

journal contribution

posted on 2025-04-17, 13:53 authored by Víctor Martínez-Jiménez, J. Gabriel Flores, Bettina Baumgartner, Juan L. Obeso, Catalina V. Flores, Bert M. Weckhuysen, J. R. Rosas-Cedillo, Pablo Marín-Rosas, Raul Perez Hernandez, Aida Gutierrez-Alejandre, Eduardo González-Zamora, Ilich A. Ibarra, Ricardo A. Peralta, Jose Antonio de los Reyes

Ni and Ni–Co metal nanoparticles supported on a Ce_0.6Zr_0.4O₂ support (denoted as Ni/CZ-C and NiCo/CZ-C) were tested for the hydrogenation of carbon dioxide under mild conditions. The NiCo/CZ-C catalyst demonstrated remarkable performance, significantly decreasing the reaction temperature (200 °C) and achieving high selectivity toward short-chain hydrocarbons, specifically ethane and butane. In situ studies using diffuse reflectance infrared Fourier transform spectroscopy allowed for the monitoring of the evolution of methane formation and the proposal of a reaction scheme. Both catalysts produce carbonate species, which are further hydrogenated to produce CH₄. Notably, with the NiCo/CZ-C catalyst, additional hydrocarbons, such as ethane and butane, were also detected.