Catalytic Degradation of Methylphosphonic Acid Using Iron Powder/Iron Oxides
Abstract
The catalytic degradation of methylphosphonic acid, the final hydrolysis product of some nerve agents, using Fe, Fe2O3, FePO4 and Al/Al2O3 was studied by evolved gas analysis - Fourier transform infrared spectroscopy (EGA-FTIR) under nitrogen, air and oxygen atmospheres. All of the compounds catalysed the reaction to some extent (in comparison to heating MPA alone) with Fe2O3 being the best catalyst with carbon-containing gases evolving at 375 C under all atmospheres. Temperatures of formation of carbon containing gases using the other catalysts were 400-450 C for Fe, 400-425 C for FePO4 and ca. 510 C for Al/Al2O3. There is some evidence that Fe and Fe2O3 reacted with MPA to form an iron phosphate species, which further catalysed the reaction although to a lesser extent.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 2005
- Accession Number
- ADA462794
Entities
People
- Gary Mathys
- Harry Rose
- John Webb
- Joseph J. Moniodis
- Robert Mathews
Organizations
- Defence Science and Technology Group