While the sooting tendencies of regular hydrocarbons, oxygenates, and complex fuel mixtures have been well-studied, far less research has been devoted to analyzing the influence of fuel-nitrogen on soot formation. The effect of nitrogen on soot formation becomes relevant for diesel fuels with nitrogen-containing additives, as well as biomass or biomass-derived fuels, which can contain up to 30% nitrogen-containing compounds by dry weight. To begin closing these gaps in the literature, the sooting tendencies of 14 C4 and C6 amines were measured. Sooting tendencies were quantified by re-scaling relative soot concentrations measured in fuel-doped methane flames into Yield Sooting Indices (YSI). The relative soot concentrations were measured with line-of-sight spectral radiance, and validation experiments confirmed that the presence of nitrogen in the test compounds did not interfere with this diagnostic. All of these amines had lower sooting tendencies than the structurally analogous hydrocarbons and oxygenates. The sooting tendencies of amine isomers with the same chemical formula varied significantly. Secondary amines with linear substituents were found to offer the lowest sooting propensity, while primary amines with branched substituents were observed to yield the largest sooting tendencies. The relationship between sooting propensity and chemical structure of the amines hints at the complex nature of soot formation, and highlights an interesting and unexplored area of combustion chemistry for further studies.

尽管对常规碳氢化合物，含氧化合物和复杂燃料混合物的烟the趋势进行了充分研究，但很少有研究致力于分析燃料氮对烟ot形成的影响。氮对烟灰形成的影响变得与含氮添加剂的柴油燃料以及生物质或生物质衍生燃料有关，按干重计其可包含高达30％的含氮化合物。为了填补文献中的这些空白，已测量了14种C4和C6胺的烟ot趋势。通过将在燃料掺杂的甲烷火焰中测得的相对烟灰浓度重新换算成产量烟灰指数（YSI），可以量化烟灰趋势。相对烟灰浓度是通过视线光谱辐射度测量的，验证实验证实测试化合物中氮的存在不会干扰该诊断。所有这些胺的烟灰趋势均低于结构类似的烃类和含氧化合物。具有相同化学式的胺异构体的烟ot趋势变化很大。发现具有线性取代基的仲胺具有最低的烟灰倾向，而具有分支取代基的伯胺具有最大的烟灰倾向。烟灰倾向与胺的化学结构之间的关系暗示了烟灰形成的复杂性质，并突出了燃烧化学的有趣且未探索的领域，以供进一步研究。所有这些胺的烟灰趋势均低于结构类似的烃类和含氧化合物。具有相同化学式的胺异构体的烟ot趋势变化很大。发现具有线性取代基的仲胺具有最低的烟灰倾向，而具有分支取代基的伯胺具有最大的烟灰倾向。烟灰倾向与胺的化学结构之间的关系暗示了烟灰形成的复杂性质，并突出了燃烧化学的有趣且未探索的领域，以供进一步研究。所有这些胺的烟灰趋势均低于结构类似的烃类和含氧化合物。具有相同化学式的胺异构体的烟ot趋势变化很大。发现具有线性取代基的仲胺具有最低的烟灰倾向，而具有分支取代基的伯胺具有最大的烟灰倾向。烟灰倾向与胺的化学结构之间的关系暗示了烟灰形成的复杂性质，并突出了燃烧化学的有趣且未探索的领域，以供进一步研究。发现具有线性取代基的仲胺具有最低的烟灰倾向，而具有分支取代基的伯胺具有最大的烟灰倾向。烟灰倾向与胺的化学结构之间的关系暗示了烟灰形成的复杂性质，并突出了燃烧化学的有趣且未探索的领域，以供进一步研究。发现具有线性取代基的仲胺具有最低的烟灰倾向，而具有分支取代基的伯胺具有最大的烟灰倾向。烟灰倾向与胺的化学结构之间的关系暗示了烟灰形成的复杂性质，并突出了燃烧化学的有趣且未探索的领域，以供进一步研究。