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Journal Article

The nickel-support interaction as determining factor of the selectivity to ethylene in the oxidative dehydrogenation of ethane over nickel oxide/alumina catalysts

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Delgado,  Daniel
Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas;
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Abdelbaki, Y., de Arriba, A., Solsona, B., Delgado, D., García-González, E., Issadi, R., et al. (2021). The nickel-support interaction as determining factor of the selectivity to ethylene in the oxidative dehydrogenation of ethane over nickel oxide/alumina catalysts. Applied Catalysis A, 623: 118242. doi:10.1016/j.apcata.2021.118242.


Cite as: https://hdl.handle.net/21.11116/0000-0008-BB15-E
Abstract
Nickel oxides supported on γ-alumina (Ni-loading from 5 to 30 wt% NiO) have been synthesized and tested in the oxidative dehydrogenation (ODH) of ethane in order to determine the importance of the NiO-support interaction. The best performance was achieved by the catalyst with 15 wt% NiO; higher NiO-loadings lead to the formation of unselective bulk-like NiO and lower Ni-loadings present high proportion of free alumina surface sites. The presence of oxalic acid and/or niobium in the synthesis gel resulted in the formation of NiO particles with similar size, but higher crystallinity and reducibility than the standard 15 wt% NiO catalyst. The obtained results have revealed that, in addition to NiO crystal size, the nickel oxide-support interaction determines the catalytic performance of these catalysts.