Small Amounts of Rh-Promoted Ni Catalysts for Methane Reforming with CO2.

Small amounts of Rh-promoted Ni/α-Al₂O₃ catalysts possessed higher activity than pure Ni/α-Al₂O₃, Rhα-Al₂O₃ catalysts and exhibited excellent coke resistance ability in methane reforming with CO₂. XRD, H₂-TPR, CO₂-TPD and coking reaction (via CH₄ temperature-programmed decomposition) indicated that Rh improved the dispersion of Ni, retarded the sintering of Ni and increased the activation of CO₂ and CH₄ on the surface of catalyst. [ABSTRACT FROM AUTHOR]