Carbon nanostructure formation over Ni, Co, Fe on γ-Al 2 O 3 during low-temperature dry reforming of methane: insights into mechanisms and catalytic behaviour

Key Points

• The aim is to understand how Ni, Co, and Fe catalysts on γ-Al2O3 influence carbon nanostructure formation during dry reforming of methane.
• Low-temperature dry reforming of methane experiments
• Comparison of carbon growth mechanisms over Ni, Co, and Fe
• Characterization of carbon structures produced
• Ni produces filamentous carbon through a tip-growth mechanism.
• Co leads to graphitic carbon deposits due to surface diffusion.
• Fe shows no catalytic activity and does not promote carbon formation.