Thermal decomposition of n-alkanes under supercritical conditions
- Pennsylvania State Univ., University Park, PA (United States)
The future aircraft fuel system may be operating at temperatures above the critical points of fuels. Currently there is very limited information on the thermal stability of hydrocarbon fuels under supercritical conditions. In this work, the thermal stressing experiments of n-decane, n-dodecane, n-tetradecane, their mixtures, and an n-paraffin mixture, Norpar-13, was carried out under supercritical conditions. The experimental results indicated that the thermal decomposition of n-alkanes can be represented well by the first-order kinetics. Pressure has significant effects on the first-order rate constant and product distribution in the near-critical region. The major products are a series of n-alkanes and 1-alkenes. The relative yields of n-alkanes and 1-alkenes depend on the reaction conditions. The first-order rate constants for the thermal decomposition of individual compounds in a mixture are different from those obtained for the decomposition of pure compounds.
- OSTI ID:
- 370765
- Report Number(s):
- CONF-960376--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Thermal decomposition of C{sub 10}-C{sub 14} normal alkanes in near-critical and supercritical regions: Product distributions and reaction mechanisms
Cocarcinogenic effects of n-alkanes and ultraviolet light on mice