FUEL 255 |
| This paper describes the decomposition and isomerization of radicals formed during the combustion of liquid transportation fuels. It is a consequence of the increasing possibility of simulating the combustion of real fuels in real devices. Particular emphasis is placed on the study of the unimolecular processes using the single pulse shock tube technique. The relationship between the cracking pattern and high pressure rate constants are stressed. This in turn permits the projection of results to cover all combustion conditions. Recent work on reactions involving cyclohexyl and 1-hexenyl-6 radicals are presented. The additional complications brought about by cyclization and decyclization processes are described. The simplicity of the cyclohexyl radical is noted and it appears that alkyl substituted cyclohexyl radicals will lead to contributions from additional isomers. This can lead to increased mechanistic complexity and the need for additional work for fuels with cyclic structures is discussed. |
|
Chemistry of Solid, Liquid, and Gaseous Fuels
8:15 AM-12:15 PM, Thursday, August 23, 2007 Boston Park Plaza -- Arlington Rm, Oral
Division of Fuel Chemistry |