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Combustion and Flame 144 (2006) 662674 www.elsevier.com/locate/combustflame

Summary: Combustion and Flame 144 (2006) 662674
Thermal decomposition of JP-10 studied by micro-flowtube
pyrolysis-mass spectrometry
Shamit Nakra, Richard J. Green 1
, Scott L. Anderson
Department of Chemistry, University of Utah, 315 S. 1400 E. Rm 2020, Salt Lake City, UT 84112, USA
Received 1 February 2005; received in revised form 10 July 2005; accepted 11 August 2005
Available online 17 November 2005
Decomposition of JP-10 (exo-tetrahydrodicyclopentadiene) was studied in a small flowtube reactor over the
temperature range up to 1700 K on the millisecond time scale. For comparison, the decomposition behavior of
cyclopentadiene, dicyclopentadiene, and benzene was studied under identical conditions. Products of pyrolysis
were identified by chemical ionization (CI) and electron impact ionization (EI) mass spectrometry. On the exper-
imental time scale, JP-10 begins to decompose above 900 K and is completely decomposed by 1300 K. In the
initial decomposition, the principal products are cyclopentadiene, benzene, propyne, and C4Hx. At high tempera-
tures, the cyclopentadiene decomposes, and the principal species observed are benzene, acetylene, and ethylene.
From the combination of EI and CI spectra, we can confirm that the C6 product observed is benzene, with few
if any other C6Hx products. Similarly, the C5 product is cyclopentadiene, with no cyclopentene or other C5Hx
products. The observed product distribution is inconsistent with both equilibrium speciation and predictions of


Source: Anderson, Scott L. - Department of Chemistry, University of Utah


Collections: Energy Storage, Conversion and Utilization; Materials Science; Chemistry