About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Chemistry and Physics of Interfaces
|
| Presentation Title |
Decomposition of CWA Simulant DIMP in the Presence of Combusting Magnesium: Effects of Particle Size and Surface Chemistry |
| Author(s) |
Elif Irem Senyurt, Timothy Weihs |
| On-Site Speaker (Planned) |
Elif Irem Senyurt |
| Abstract Scope |
Effective neutralization of chemical warfare agents (CWAs) requires understanding interfacial reactions between toxic compounds and reactive materials. This study examines the decomposition of the CWA simulant diisopropyl methyl phosphonate (DIMP) in the presence of combusting magnesium, focusing on how particle size and surface chemistry influence reactivity. Two magnesium types were evaluated: commercial powder (~50 μm) and nano-sized particles (~800 nm) synthesized via non-thermal plasma. Magnesium’s high energy density and rapid formation of MgO, a surface-active decomposition catalyst, were leveraged to promote DIMP breakdown. Real-time diagnostics using a custom infrared spectrometer (PRiMIRS) and tunable diode laser absorption spectroscopy (TDLAS) captured transient gas species and thermal profiles during vapor-phase reactions. Results show enhanced decomposition with nano-Mg, attributed to increased surface reactivity and oxide formation. These findings underscore the role of reactive interfaces in simulant degradation and offer insights for designing high-performance materials for CWA defeat. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Powder Materials, Magnesium, |