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Initiation mechanisms and kinetics of pyrolysis and combustion of JP-10 hydrocarbon jet fuel

Chenoweth, Kimberly and van Duin, Adri C. T. and Dasgupta, Siddharth and Goddard, William A., III (2009) Initiation mechanisms and kinetics of pyrolysis and combustion of JP-10 hydrocarbon jet fuel. Journal of Physical Chemistry A, 113 (9). pp. 1740-1746. ISSN 1089-5639. doi:10.1021/jp8081479.

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In order to investigate the initiation mechanisms and kinetics associated with the pyrolysis of JP-10 (exo-tricyclo[^2,6]decane), a single-component hydrocarbon jet fuel, we carried out molecular dynamics (MD) simulations employing the ReaxFF reactive force field. We found that the primary decomposition reactions involve either (1) dissociation of ethylene from JP-10, resulting in the formation of a C8 hydrocarbon intermediate, or (2) the production of two C5 hydrocarbons. ReaxFF MD leads to good agreement with experiment for the product distribution as a function of temperature. On the basis of the rate of consumption of JP-10, we calculate an activation energy of 58.4 kcal/mol for the thermal decomposition of this material, which is consistent with a strain-facilitated C−C bond cleavage mechanism in JP-10. This compares well with the experimental value of 62.4 kcal/mol. In addition, we carried out ReaxFF MD studies of the reactive events responsible for oxidation of JP-10. Here we found overall agreement between the thermodynamic energies obtained from ReaxFF and quantum-mechanical calculations, illustrating the usefulness of ReaxFF for studying oxidation of hydrocarbons. The agreement of these results with available experimental observations demonstrates that ReaxFF can provide useful insights into the complicated thermal decomposition and oxidation processes of important hydrocarbon fuels.

Item Type:Article
Related URLs:
URLURL TypeDescription
van Duin, Adri C. T.0000-0002-3478-4945
Dasgupta, Siddharth0000-0002-9161-7457
Goddard, William A., III0000-0003-0097-5716
Additional Information:© 2009 American Chemical Society. Received: September 12, 2008; Revised Manuscript Received: December 01, 2008. This research was supported in part by ONR, ARO-MURI, and ONR-PROM. The computer systems were funded by ARO-DURIP and ONR-DURIP.
Funding AgencyGrant Number
Office of Naval Research (ONR)UNSPECIFIED
Army Research Office (ARO)UNSPECIFIED
Issue or Number:9
Record Number:CaltechAUTHORS:20090415-131742057
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:13985
Deposited By: Tony Diaz
Deposited On:16 Apr 2009 22:30
Last Modified:08 Nov 2021 22:42

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