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Graphite–Ni synergy unlocks a hydrogen-free pathway for carbon based integrated CO₂ capture and utilisation (ICCU)
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DOI：10.1016/j.ccst.2025.100546.png)
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Abstract
En 中文
• A carbon-based ICCU (C-ICCU) pathway is proposed to avoid hydrogen dependence. • Ni/graphite composites catalyze in-situ CO₂ conversion via the reverse Boudouard reaction. • CaCO₃ decomposition coupled with Ni/graphite achieves >95% CO₂ conversion at 600–650°C. • Optimal Ni loading is 3–5 wt.%, with no further improvement at higher loadings. • In-situ DRIFTS reveals synergistic graphite-assisted CO₂ release and Ni-catalyzed CO formation.
Keywords:
Integrated Carbon Capture and Utilisation
CO₂ conversion
C-ICCU
Graphite
Nickel
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