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On the mechanism of soot nucleation

机译：烟灰成核的机制

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The mechanism of carbon particulate (soot) inception has been a subject of numerous studies and debates. The article begins with a critical review of prior proposals, proceeds to the analysis of factors enabling the development of a meaningful nucleation flux, and then introduces new ideas that lead to the fulfillment of these requirements. In the new proposal, a rotationally-activated dimer is formed in the collision of an aromatic molecule and an aromatic radical; the two react during the lifetime of the dimer to form a stable, doubly-bonded bridge between them, with the reaction rooted in a five-member ring present on the molecule edge. Several such reactions were examined theoretically and the most promising one generated a measurable nucleation flux. The consistency of the proposed model with known aspects of soot particle nanostructure is discussed. The foundation of the new model is fundamentally the H-Abstraction-Carbon-Addition (HACA) mechanism with the reaction affinity enhanced by rotational excitation.
机译：碳颗粒（烟灰）初始化的机制是众多研究和辩论的主题。本文始于对先前提案的关键审查，进入对能力的分析，从而实现有意义的成核通量的发展，然后介绍了导致履行这些要求的新想法。在新的提案中，在芳族分子的碰撞和芳族自由基的碰撞中形成旋转活化的二聚体;两者在二聚体的寿命期间反应，以在它们之间形成稳定的双键合桥，该反应根在分子边缘上存在的五个成员环。理论上检查了几种这样的反应，并且最有希望的一个产生可测量的成核通量。讨论了所提出的模型的一致性与烟灰颗粒纳米结构的已知方面。新模型的基础基本上是通过旋转激发增强的反应亲和力的H型抽象 - 碳添加（HACA）机制。

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