RT Journal Article
T1 N2O Assisted Ethane Transformation into Ethylene Using NiO--CeO2--ZrO2 Catalysts
A1 Sánchez, Ginebra
A1 Dejoz, Ana M.
A1 Fernández-Domene, Ramón
A1 Barroso-Martín, Isabel
A1 Ballesteros-Plata, Daniel
A1 Infantes-Molina, Antonia
A1 Cecilia-Buenestado, Juan Antonio
A1 Rodríguez-Castellón, Enrique
A1 López Nieto, José Manuel
A1 Sánchez-Tovar, Rita
A1 Solsona, Benjamín
K1 Quimica inorgánica
K1 Etileno
AB NiO--CeO2 and NiO--CeO2--ZrO2 catalysts have been synthesized,electrochemically characterized (Mott-Schottky (MS) measurementsand Electrochemical Impedance Spectroscopy), physicochemicallycharacterized (by N2 adsorption, XRD, TransmissionElectron Microscopy and XPS) and tested in the N2O assistedethane oxydehydrogenation. The use of low Zr-loadings (Zr/Ce=0.1 at. ratio) has led to the optimal results in the ethyleneproduction, improving those obtained by the Zr-free NiO--CeO2catalyst. However, high Zr-loadings have meant a decrease inthe olefin production. The catalytic results obtained have beenexplained considering the amount of oxygen vacancies, thecrystalline phases formed and, especially, the nature of thesurface Ni species. Importantly, the use of N2O as an oxidizingagent leads to a remarkable improvement in the selectivity tothe olefin compared to that obtained employing molecular O2.Then, for a given ethane conversion the selectivity to ethyleneis ca. 15 points higher using N2O than using O2. Anotheradditional positive aspect of this NiO--CeO2--ZrO2 catalyst is itshigh catalytic stability.
PB Wiley
YR 2024
FD 2024-11
LK https://hdl.handle.net/10630/35368
UL https://hdl.handle.net/10630/35368
LA eng
NO Funding for open access charge: Universidad de Málaga/CBUA
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 21 ene 2026