Construction of the reaction mechanisms for the formation and oxidation of soot based on the chemical structure and morphology

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In order to reduce the particulate matters such as soot emitted from the combustion in diesel engines etc., the understanding of the chemical process of their formation is important. This study focused on the stability and combustibility of the soot depending on the chemical structure and morphology of the precursor cyclic compounds. Especially, the exchange reactions between stable six-membered ring structure due to the aromaticity and relatively unstable five-membered ring structure have been studied both experimentally and theoretically.