Abdelbaki, YousraDe Arriba, AgustínSolsona, BenjamínDelgado, DanielGarcía González, EstherIsaadi, RachidLópez Nieto, Jose M.2024-12-172024-12-172021-06-06Applied Catalysis A: General Volume 623, 5 August 2021, 11824210.1016/j.apcata.2021.118242https://hdl.handle.net/20.500.14352/112794Nickel 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.engAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/journal article1873-3875https://doi.org/10.1016/j.apcata.2021.118242open access546EthyleneOxidative dehydrogenation of ethaneODHNickel oxideAluminaCatalyst characterization (XPS, HREM, UV raman and UV–vis-DRS)Química inorgánica (Química)2303 Química Inorgánica