CO₂ Capture-Mineralization for Calcium-Looping Integrated with Methane Dry Reforming

High Resolution Image Download MS PowerPoint Slide Chemical absorption of carbon dioxide using monoethanolamine (MEA) is a well-established method for postcombustion CO 2 capture. In this study, we aimed to integrate (1) the MEA-based CO 2 capture with the regeneration of MEA using calcium-based mineralization, followed by (2) direct utilization of captured CO 2 to form syngas via a calcium looping-based dry reforming of methane (CaL-DRM), an interfacial catalytic process. The results show that room-temperature CO 2 capture-MEA regeneration was achievable by using calcium-based mineralization. The formed Ni–Ca material was shown to be active for converting the captured CO 2 into syngas via the CaL-DRM reaction at 600 °C. A 10-cycle stability test confirmed the operational stability of the Ni–Ca material, with consistent CO 2 uptake capacity ( X CO2 = 6.1–6.3 mmol/g sample ) and stable syngas yields ( Y H2 = 14.2–14.5 mmol/g sample, Y CO = 12.1–12.9 mmol/g sample ). These results demonstrate the feasibility of integrating CO 2 capture-mineralization with CaL-DRM, offering a sustainable and energy-efficient pathway for CO 2 utilization and syngas generation.