Combined steam and carbon dioxide reforming of methane (CSCRM) can produce desired synthesis gas for Fischer�Tropsch and methanol synthesis due to adjust H2/CO ratio by controlling reacting gas composition. Compare to noble metal catalysts, Ni catalysts are economical and have been researched commonly. However, supported Ni catalysts easily deactivate due to carbon formation in carbon dioxide reforming of methane with and without steam.In this study, a new pretreatment method, involving saturation of the catalyst with liquid water during reduction (water-pretreatment), improved activity and coke resistance of Ni/Al2O3 in the CSCRM  . Characterization results explained that water pretreated Ni/Al2O3 (WNiAl) has raft-like shape Ni particles   . It causes a high number of Ni-alumina interface sites with a Ni-Al alloy characteristic for a high coke resistance due to strong metal-support interaction (SMSI). However, conventional pretreated Ni/Al2O3 (NiAl) has sphere-like shape causing a small number of Ni-alumina interface sites causing high carbon formation.

Novel pretreatment effect on Ni/Al<sub>2</sub>O<sub>3</sub> for combined steam and carbon dioxide reforming of methane

243rd National Meeting (2012)

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Novel pretreatment effect on Ni/Al2O3 for combined steam and carbon dioxide reforming of methane

Novel pretreatment effect on Ni/Al₂O₃ for combined steam and carbon dioxide reforming of methane