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

Zhi Xuan Law1, Nattanan Watcharasawat2, Varong Pavarajarn2

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|September 8, 2025
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Summary
This summary is machine-generated.

This study integrates monoethanolamine (MEA) CO2 capture with calcium-based regeneration and methane dry reforming to produce syngas. This sustainable process efficiently utilizes captured carbon dioxide.

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Area of Science:

  • Chemical Engineering
  • Materials Science
  • Catalysis

Background:

  • Chemical absorption using monoethanolamine (MEA) is a standard method for postcombustion CO2 capture.
  • Efficient regeneration of MEA and direct utilization of captured CO2 are crucial for cost-effective carbon capture and utilization (CCU).

Purpose of the Study:

  • To integrate MEA-based CO2 capture with calcium-based mineralization for MEA regeneration.
  • To utilize the captured CO2 in a calcium looping-based dry reforming of methane (CaL-DRM) process for syngas production.
  • To evaluate the catalytic performance and stability of the developed Ni-Ca material.

Main Methods:

  • Room-temperature CO2 capture using MEA followed by regeneration via calcium-based mineralization.
  • Synthesis of a Ni-Ca material for the CaL-DRM reaction.
  • Testing the CaL-DRM process at 600°C and conducting 10-cycle stability tests.

Main Results:

  • Successful room-temperature MEA regeneration using calcium-based mineralization.
  • The Ni-Ca material demonstrated activity in converting captured CO2 into syngas via CaL-DRM.
  • The Ni-Ca material exhibited excellent operational stability over 10 cycles, with consistent CO2 uptake and syngas yields.

Conclusions:

  • The integrated CO2 capture-mineralization and CaL-DRM process is feasible.
  • This approach offers a sustainable and energy-efficient pathway for CO2 utilization and syngas generation.
  • The developed Ni-Ca material shows promise for stable and efficient catalytic conversion of captured CO2.