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Various MxOy–Al2O3 oxides (M=Zr, Mg, Ni, Ce, La), prepared by a sol–gel method, were used as supports for rhodium catalysts in methane and ethanol dry reforming. After calcination, the Rh/MxOy–Al2O3 catalysts present BET surface areas between 85 and 208m2g−1. For the CH4 dry reforming, the highest yields in hydrogen are obtained in the following ranking: Rh/NiO–Al2O3>Rh/Al2O3>Rh/MgO–Al2O3≈Rh/CeO...
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