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Origin and Stabilization of Conversion Fluctuations in Chemical Looping Dry Reforming of Methane through CeFeO3 Oxygen Reservoir
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DOI：10.1016/j.apcatb.2026.126947.png)
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Abstract
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• Ce-Fe redox governs oxygen storage, while Ni promotes CH4 activation and pyrolysis. • Maintaining a solid oxygen reservoir stabilizes chemical looping involving carbon. • Limited CeFeO3 regeneration and excessive carbon deposition destabilize the cycles. • We develop two stabilization methods: CO2 cofeeding and CeFeO3-precursor synthesis. • Spatial Ni-Fe separation suppresses alloying and stabilizes CeFeO3 regeneration.
Keywords:
Chemical looping dry reforming of methane
Conversion fluctuation
Solid oxygen reservoir
Solid carbon management
CeFeO3 regeneration
Ni-Ce-Fe-O system thermodynamic calculation
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