Process Intensification of Air Separation and Autothermal Bi-reforming Reactions Enabled by MnO/Mn2O3 Redox Pair

Date

2025-01-01

Author

Bak, Y. Gorkem
Ergül, S. Deniz
Oǧulgönen, C. Güvenç
Üner, Deniz

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In this work, the potential use of solar irradiation is investigated toward driving endothermic chemical looping reactions during reversible use of metal oxides, where endothermic processes were enablers of long-term storage, transport, and utilization of thermal energy. A chemical looping intensified process was demonstrated to be feasible through the use of manganese(II) oxide for air separation and autothermal reforming of methane processes. The redox behavior of Mn-oxides is favorable for chemical looping air separation, and the compound is stable, as evidenced by data gathered from TPO and TGA. Air separation was possible through the capture of oxygen by the reduced state of the oxide, producing nitrogen; CH4 was used during the reduction cycle, producing hot gases containing H2O and CO2. These hot products can provide both feed and needed thermal energy for the subsequent reforming of the reactor to produce syngas. The potential to integrate the system into concentrated solar irradiation was demonstrated. The solar thermal intensified reforming process is a viable candidate for renewable H2 and syngas production.

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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=105009623806&origin=inward
https://hdl.handle.net/11511/115228

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Department of Chemical Engineering, Article