“…Previous work has shown the importance and role of oxygen-containing heteroatoms, such as phenols and hydroperoxides, in fuel autoxidative thermal stability . Phenols have been shown to inhibit oxidation but increase surface and bulk deposit formation. , Hydroperoxides are primary autoxidation products at relatively low temperatures (<120 °C) and rate-controlling reaction intermediates at higher temperatures (≥140 °C). , Some sulfur-containing species (e.g., mercaptans, sulfides, disulfides, thiophenes, and benzothiophenes) have been shown to be detrimental to fuel thermal stability. − Nitrogen species (e.g., indoles, anilines, quinolines, amines, pyridines, carbazoles, and indolines) have been studied less frequently with conflicting results; some nitrogen species greatly increase deposition while others are relatively innocuous. − Most previous model fuel studies considered heteroatomic species in isolation rather than as mixtures of heteroatomic species classes, as occurs in actual fuels. A relatively small number of studies have explored the interaction between heteroatomic species during fuel autoxidation. − …”