Experimental and kinetic modeling study on sooting tendencies of alkylbenzene isomers

Abstract Alkylbenzenes are major aromatic constituents of real transportation fuels and important surrogate components. In this study, 4 kinds C8H10 8 C9H12 alkylbenzenes were tested in a laminar diffusion flame to investigate the influence chemical structure on sooting tendency. The laser induced incandescence (LII) technique was applied obtain 2D distribution soot volume fraction for calculating yield index (YSI) test fuels. processes fuel oxidation formation simulated by detailed kinetic mechanism. mechanism includes all species ranging from reactant carbon particle. simulation results defined YSI good agreement with experimental values. A database tendencies established data, which shows that number substituents is positively correlated tendency meta-substituent higher than other isomers. Through analysis reaction pathway sensitivity, it found main production A4 (pyrene) via combination reactions at early stage combustion. presented study systematic comprehensive alkylbenzenes, thus expected be useful model development validation.