| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Real Time Imaging
|
| Presentation Title |
In-situ Analysis of Select Oxygen Carrier Materials under Chemical Looping Combustion Conditions |
| Author(s) |
Anna Nakano, Jinichiro Nakano, Ömer Doğan |
| On-Site Speaker (Planned) |
Anna Nakano |
| Abstract Scope |
Chemical looping combustion (CLC) has been studied for decades, with numerous reports related to this topic found in the literature. However, the development of reliable and durable oxygen carrier materials that last long term remains a challenge. Oxygen carrier’s physical and chemical properties continuously evolve in response to repeated redox cycling, leading to material attrition and degradation that impact the overall efficiency of the process. In this work, select oxygen carrier materials including natural hematite and NETL’s carriers were tested under simulated redox cycles (10%CO-90%Ar and air) at 800 °C. Real time evolutions in microstructure, particle volume, surface area, and roughness obtained from the customized high temperature environmental confocal scanning laser microscope, were used as parameters to benchmark materials performance. Primary reactions tend to occur on the surfaces of particles and inner grains and hold the key to optimizing oxygen exchange efficiency. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Phase Transformations, |