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Partial Oxidation of Methane over Ni/SiO2


초록

Ni catalyst (Ni: 15 wt%) supported on precalcined SiO2 has been investigated in reforming reactions of methane to synthesis gas. The catalyst exhibited fairly good activity and stability in partial oxidation of methane (POM), whereas it deactivated in steam reforming of methane (SRM). Pulse reaction results of CH4, O2, and CH4/O2 revealed that Ni/SiO2 has high capability to dissociate methane. The results also revealed that both CH4 and O2 are activated on the surface of metallic Ni, and then surface carbon species react with adsorbed oxygen to produce CO and CO2 depending on the bond strength of the oxygen species on the catalyst surface.

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참고문헌

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피인용 문헌

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  3. Carbon Dioxide Reforming of Methane over Ni/θ-Al2O3 Catalysts: Effect of Ni Content vol.23, pp.8, 2002, https://doi.org/10.5012/bkcs.2002.23.8.1166
  4. Methane-reforming reactions over Ni/Ce-ZrO2/θ-Al2O3 catalysts vol.251, pp.2, 2002, https://doi.org/10.1016/s0926-860x(03)00359-4
  5. A highly active catalyst, Ni/Ce–ZrO2/θ-Al2O3, for on-site H2 generation by steam methane reforming: pretreatment effect vol.28, pp.12, 2002, https://doi.org/10.1016/s0360-3199(03)00029-6
  6. Thermal decomposition study of silica-supported nickel catalyst synthesized by the ammonia method vol.281, pp.1, 2002, https://doi.org/10.1016/j.molcata.2007.11.033