Effect of C9H12 alkylbenzenes on particle formation in diffusion flames: An experimental study

The experimental results show that the longer and branched is the side alkyl chain (iso-propylbenzene with respect to n-propylbenzene) the higher is particle formation enhancement. Moreover, increasing the number of methyl groups attached to the aromatic ring (mesitylene compared with xylenes and toluene) does not result in enhanced sooting tendency in the analyzed combustion conditions.