About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
2026 Graduate Student Poster Contest
|
| Presentation Title |
SPG-12: Fabrication and Characterization of a Reticulated Porous Iron Aluminate Ceramic for High-Temperature Redox Cycling |
| Author(s) |
Linnea Helenius, Catherine Trautman, Jessica Connell, Christi Jo Hahn, Alice Ly, My Huynh, William Paulson, Kent J. Warren, Alan W. Weimer |
| On-Site Speaker (Planned) |
Linnea Helenius |
| Abstract Scope |
Reticulated porous ceramic (RPC) iron aluminate (Fe0.5Al0.5)3O4 parts are created. The RPC facilitates high temperature (1400°C-1600°C) two-step redox cycles by increasing the specific surface area to promote reaction rates and increasing the porosity to allow faster heat transfer by radiation. It has advantages over particle-based reactor designs because it is less prone to channeling and elutriation or diffusion of hot particles to heat-sensitive reactor components.
The RPC structures are fabricated via the replication method. A polyurethane foam is cast in iron aluminate slurry and subjected to a thermal treatment to burn out the foam and sinter the part. The morphology of the RPC is characterized by micro-computed tomography, scanning electron microscopy, mercury porosimetry, image analysis, and hydrodynamic experiments to elucidate the specific surface area, porosity, pore diameter, strut diameter, and permeability. Thermochemical performance is evaluated using thermogravimetry. |