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Title: CO2 reforming of CH4 over highly active and stable yRhNix/NaY catalysts
Other Titles: Reformage du méthane par le dioxyde de carbone sur des catalyseurs yRhNix/NaY actifs et stables
Authors: Estephane, Jane 
Ayoub, Marc
Safieh, Khaled
Kaydouh, Marie-Nour
Casale, Sandra
Zakhem, Henri El 
Affiliations: Department of Chemical Engineering 
Department of Chemical Engineering 
Keywords: Dry reforming
Zeolite NaY
Issue Date: 2015
Part of: Comptes rendus chimie
Volume: 18
Issue: 3
Start page: 277
End page: 282
Ni7.5/NaY catalysts were prepared using two different methods, the incipient wetness impregnation method and the "two-solvent" method. These catalysts were characterised by N2 sorption, XRD, TEM and TPR. Their activity and stability in the dry reforming of methane were tested at atmospheric pressure under an equimolar mixture of methane and carbon dioxide. Three different Ni species, very small, spherical, and layers of nickel silicate were observed by TEM. The preparation by the two-solvent method led to a better dispersion of the active phase as well as to better activity and stability. These catalysts were promoted with small amounts (0.1 wt%) of rhodium. Rhodium facilitates the reducibility and greatly enhances catalytic activity. A complete conversion (100%) for CH4 and CO2 over the Rh promoted catalyst is achieved at 584 °C and 559 °C respectively, while for the non-promoted Ni7.5/NaY catalyst, only a 60% conversion rate for CH4 and CO2 is reached at the same temperatures.
DOI: 10.1016/j.crci.2014.08.007
Ezproxy URL: Link to full text
Type: Journal Article
Appears in Collections:Department of Chemical Engineering

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