Thermal decomposition of JP10 studied by （热分解的JP10研究）.pdf

Combustion and Flame 144 (2006) 662–674 /locate/combustflame 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 Abstract 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 C H . At high tempera- 4 x 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 C Hx products. Similarly, the C product is cyclopentadiene, with no cyclopentene or other C Hx 6 5 5 products. The observed product distribution is inconsistent with both equilibrium