Selective Methanation of CO over Mesoporous Nano Zirconian Supported Ni Catalysts

Abstract:

Mesoporous nano zirconian was prepared by the self-assembly route using hexadecyltrimethyl ammonium bromide (CTAB) surfactant and employed as support for Nickel catalysts for selective methanation of CO. The CO methanation catalytic performance of the synthesized mesoporous nano zirconia-supported Ni-based catalysts was investigated, and the catalysts were charactered by TG/DSC, BET and XRD techniques. The results showed that, when the Ni loading was under 7.5 wt%, almost all the nickle species were in the form of nanoscale crystallites that finely distributed on the mosoporous nano zirconian surface. These well dispersive nickle species presented unique high activity and selectivity for CO methanation. For all the catalysts studied, the 7.5 wt%Ni/ZrO₂ catalyst was the most effective one, which showed a higher than 99% of CO conversion in the CO/CO₂ competitive methanation reactions over the temperature interval of 260~280°C, while the CO₂ conversion was held at the low level.

• Periodical: Advanced Materials Research (Volumes 236-238)
• Pages: 829-834
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.236-238.829
• Online since: May 2011
• Authors: Qi Hai Liu, Lie Wen Liao, Xin Hua Zhou, Quo Qiang Yin
• Keywords: CO Removal, Mesoporous Nanocrystalline Zirconia, Ni/ZrO₂ Catalysts, Selective Methantion

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