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|Author(s):||Wing Tsang; Iftikhar A. Awan; William S. McGivern; Jeffrey A. Manion;|
|Title:||Soot Precursors from Real Fuels: The Unimolecular Reactions of Fuel Radicals|
|Abstract:||This paper describes studies aimed at defining in a quantitative fashion the cracking pattern of fuel radicals under combustion conditions. The experimental procedure involves studies using a single pulse shock tube and combining the observations with available literature data. This leads to the deduction of high pressure rate expressions for the decomposition and isomerization processes and the departure from such values as result of energy transfer effects. The unique features of these processes are the low reaction thresholds, the relatively large size of the radicals of interest and the possibility of isomerization. The justification for this type of work is the need to connect fuel decomposition with the unsaturated precursors to PAH/particle formation and to extend the stoichiometric range of existing combustion models. The unimolecular reactions of heptyl radicals are described in detail as an example of the procedure and results. A summary of related results and on going work on more complex and larger fuel radicals is given.|
|Citation:||Soot Precursors from Real Fuels: The Unimolecular Reactions of Fuel Radicals|
|Publisher:||Book Combustion Generated Carbon Particles (A. Sarofim, Editor),|
|Keywords:||fuel decomposition,H-transfer isomerization,Heptyl radicals,radical decomposition,radical isomerization,soot precursors|