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RESEARCH PRODUCT
The nickel-support interaction as determining factor of the selectivity to ethylene in the oxidative dehydrogenation of ethane over nickel oxide/alumina catalysts
Jose NietoAgustín De ArribaBenjamín SolsonaE. García-gonzálezRachid IssaadiYousra AbdelbakiYousra AbdelbakiD. Delgadosubject
Ethylene010405 organic chemistryChemistryProcess Chemistry and TechnologyNickel oxideInorganic chemistryNon-blocking I/OOxalic acidAluminachemistry.chemical_elementCatalyst characterization (XPS HREM UV raman and UV-vis-DRS)010402 general chemistry01 natural sciencesCatalysisODH0104 chemical sciencesCatalysisCrystallinitychemistry.chemical_compoundNickelEthyleneDehydrogenationOxidative dehydrogenation of ethaneNickel oxidedescription
[EN] Nickel oxides supported on gamma-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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-01-01 |