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CaCO3 hydrogenation to CH4 using natural limestone and a Ni-based catalyst for CCU applications
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DOI：10.1016/j.jcou.2026.103430.png)
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Abstract
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• CaCO3 hydrogenation to CH4 using natural limestone and a Ni-based catalyst. • Remarkable CH4 production is achieved between 500 ºC and 550 ºC. • CH4 reaches 9.46% at 8 bar and 550 ºC, close to the thermodynamic equilibrium. • Integration with sorption-enhanced methanation improves the overall CH4 yield.
Keywords:
CaCO3 hydrogenation
Carbon capture and utilization
Methane production
Hydrogen-driven CO2 conversion
Sorption-enhanced methanation
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