SYMPOSIA PAPER Published: 01 January 1997

Thermodynamics and Kinetics of Burning Iron


Macroscopic kinetic analysis of the burning of 0.1 and 0.2-cm-diameter iron rods in pure oxygen at pressures between 0.3 MPa and 10 MPa, and 0.32-cm- diameter iron rods in pure oxygen at pressures between 0.3 MPa and 5 MPa indicates that the kinetic reaction occurs at the phase boundary between the molten oxide product and the liquid iron core. An apparent activation energy of 246.8 kJ/mol Fe(l) is consistent with this analysis. The surface area of the liquid oxide/liquid iron phase-boundary is appropriate for describing the reaction. An enthalpy of reaction of -365.2 kJ/mol Fe(l) at 298K is consistent for the burning of iron. The Langmuir-Hinshelwood- Hougen-Watson mechanism is consistent with the flammability data for iron. In the linear range of that mechanism an appropriate rate equation is: RFe = 7.05E3exp(-2.9684E4/T)Po21/2gm cm-2s-1

Author Information

Wilson, DB
C.E.S. Consulting, Mesilla Park, New Mexico
Steinberg, TA
University of Queensland, Brisbane, Australia
Stoltzfus, JM
NASA White Sands Test Facility, Las Cruces, New Mexico
Price: $25.00
Contact Sales
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Developed by Committee: G04
Pages: 240–257
DOI: 10.1520/STP12057S
ISBN-EB: 978-0-8031-5372-1
ISBN-13: 978-0-8031-2401-1