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6935389 
Journal Article 
Investigation of n-dodecane pyrolysis at various pressures and the development of a comprehensive combustion model 
Zeng, M; Yuan, W; Li, Wei; Zhang, Yan; Wang, Y; , 
2018 
Yes 
Energy
ISSN: 0360-5442 
PERGAMON-ELSEVIER SCIENCE LTD 
OXFORD 
155 
152-161 
WOS:000445303100014 
n-Dodecane combustion was investigated experimentally and numerically in present study. Pyrolysis experiments of n-dodecane at pressures of 0.0066, 0.039, 0.197 and 1 atm, temperatures from 750 to 1430 K were studied in a flow reactor. Mole fractions of n-dodecane, argon and pyrolysis products (including active radicals) were evaluated. A kinetic model of n-dodecane was developed by validating both present and literature reported experiments. The rate of production analysis reveals H-abstraction and C-C bond fission reactions are main consumption pathways of n-dodecane. The beta-C-C scission reactions of alkyls contribute to the formation of alkenes, which are mainly consumed via the allylic C-C fission reactions. As a soot precursor, benzene is largely produced from the recombination of C-3 species. Moreover, effects of carbon chain length on flow reactor pyrolysis were investigated for n-decane, n-dodecane and n-tetradecane. The decay of n-tetradecane is the fastest, followed by n-dodecane and n-decane, indicating that the pyrolysis reactivity of n-alkanes increases as the carbon chain length increases from C-10 to C-14 n-alkanes. Ignition delay times and laminar burning velocities (LBVs) of n-alkanes under similar conditions were also compared, the result shows that effects of the carbon chain length on ignition delay times and LBVs are slight. (C) 2018 Elsevier Ltd. All rights reserved.