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A series of ZrO2-promoted Ni-based catalysts were prepared by different methods to study the effect of ZrO2 addition manners on catalytic methanation of CO in a slurry-bed reactor. These catalysts were characterized by N2 adsorption–desorption, XRD, H2-TPR, H2-chemisorption, XPS, TEM, and CHNS. The results show that the ZrO2-promoted catalyst prepared by impregnation–precipitation method exhibits...
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