Abstract
Ordered mesoporous CoO-NiO-Al2O3 bimetallic catalysts with different Co/Ni molar ratios were prepared by an evaporation-induced self-assembly method. The samples were characterized by means of XRD, N2 physisorption, H2-TPR, TEM, XPS, Raman and TGA, and tested for CO2 reforming of CH4. Characterization results indicated that the formation of Ni-Co nano-alloy anchored in the ordered mesoporous skeleton led to the enhancement of stability of active sites and thus suppressed carbon deposition during reforming reaction, particularly for the C5N5 catalyst. Compared with the ordered mesoporous monometallic NiO-Al2O3 catalyst, the C5N5 catalyst exhibited superior stability without obvious deactivation for 150h reforming reaction and holds a promising candidate for cost-effective reforming process.
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