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RESEARCH PRODUCT
Support effects on NiO-based catalysts for the oxidative dehydrogenation (ODH) of ethane
Alfonso CaballeroBenjamín SolsonaRut SanchisJ.m. López NietoEnrique Rodríguez-castellónD. DelgadoJuan Antonio Ceciliasubject
X-ray absorption spectroscopyMaterials scienceEthyleneExtended X-ray absorption fine structureNon-blocking I/OOxidative dehydrogenation (ODH)02 engineering and technologyGeneral Chemistry010402 general chemistry021001 nanoscience & nanotechnology01 natural sciencesCatalysis0104 chemical sciencesCatalysisSupported NiOchemistry.chemical_compoundEthyleneEXAFSChemical engineeringchemistryX-ray photoelectron spectroscopyDehydrogenation0210 nano-technologySelectivitydescription
[EN] We report on the effect of NiO-support interactions on the chemical nature of Ni species in a series of supported NiO catalysts for the ODH of ethane. SiO2, TiO2-anatase, a high surface area TiO2 and a porous clay hetero-structure (PCH) with TiO2 and SiO2 pillars were used as supports, which led to a selectivity to ethylene in the range 30-90% over supported NiO catalysts. The catalysts were characterized by means of XRD, N-2-Adsorption, H-2-TPR, XPS and in situ (under H-2 reductive atmosphere) and ex situ XAS spectroscopy. The catalytic performance of supported materials is discussed in terms of their reducibility and specific reduction kinetics, but also taking into account the specific chemical nature of Ni species on each catalyst. The influence of the particle size and the presence of Ni and O vacancies on the catalytic performance in the ODH of ethane is inferred.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-08-01 |