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Title: Factors affecting the long-term stability of mesoporous nickel-based catalysts in combined steam and dry reforming of methane
Authors: Jabbour, Karam 
Hassan, Nissrine El 
Davidson, Anne
Casale, Sandra
Massiani, Pascale
Affiliations: Department of Chemical Engineering 
Department of Chemical Engineering 
Issue Date: 2016
Part of: Catalysis science and technology
Volume: 6
Issue: 12
Start page: 4616
End page: 4631
An ordered mesoporous "one-pot" nickel–alumina catalyst (5 wt% Ni) was synthesized using the evaporation-induced self-assembly method. Compared to an impregnated and a non-porous catalyst, the ordered "one-pot" Ni–alumina sample displayed, after in situ reduction, the highest and the most stable catalytic performances along a 40 h run at 800 °C in combined steam and dry reforming of methane, with conversion and selectivity values close to the thermodynamically expected ones. Both the confinement of well-dispersed Ni nanoparticles within the structured Al2O3 framework and the strengthened Ni–support interaction compared to other catalysts are shown to be key factors accounting for the high catalytic activity and stability. In contrast to alumina that appears as an effective support of Ni for catalytic combined methane reforming, neither mesoporous (SBA-15) nor macroporous (CeliteS, diatoms) silica is appropriate due to rapid deactivation by partial reoxidation of the metallic Ni0 active phase in the conditions of the reaction.
Open URL: Link to full text
Type: Journal Article
Appears in Collections:Department of Chemical Engineering

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