Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1126/science.aat3417 |
Resonance-stabilized hydrocarbon-radical chain reactions may explain soot inception and growth | |
Johansson, K. O.1; Head-Gordon, M. P.2,3; Schrader, P. E.1; Wilson, K. R.3; Michelsen, H. A.1 | |
2018-09-07 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2018 |
卷号 | 361期号:6406页码:997-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Mystery surrounds the transition from gas-phase hydrocarbon precursors to terrestrial soot and interstellar dust, which are carbonaceous particles formed under similar conditions. Although polycyclic aromatic hydrocarbons (PAHs) are known precursors to high-temperature carbonaceous-particle formation, the molecular pathways that initiate particle formation are unknown. We present experimental and theoretical evidence for rapid molecular clustering-reaction pathways involving radicals with extended conjugation. These radicals react with other hydrocarbon species to form covalently bound complexes that promote further growth and clustering by regenerating resonance-stabilized radicals through low-barrier hydrogen-abstraction and hydrogen-ejection reactions. Such radical-chain reaction pathways may lead to covalently bound clusters of PAHs and other hydrocarbons that would otherwise be too small to condense at high temperatures, thus providing the key mechanistic steps for rapid particle formation and surface growth by hydrocarbon chemisorption. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000443892700041 |
WOS关键词 | POLYCYCLIC AROMATIC-HYDROCARBONS ; EMISSION ; PARTICLES ; OXIDATION ; EVOLUTION |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/199529 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Sandia Natl Labs, Combust Res Facil, Livermore, CA 94550 USA; 2.Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA; 3.Lawrence Berkeley Natl Lab, Chem Sci Div, Berkeley, CA 94720 USA |
推荐引用方式 GB/T 7714 | Johansson, K. O.,Head-Gordon, M. P.,Schrader, P. E.,et al. Resonance-stabilized hydrocarbon-radical chain reactions may explain soot inception and growth[J]. SCIENCE,2018,361(6406):997-+. |
APA | Johansson, K. O.,Head-Gordon, M. P.,Schrader, P. E.,Wilson, K. R.,&Michelsen, H. A..(2018).Resonance-stabilized hydrocarbon-radical chain reactions may explain soot inception and growth.SCIENCE,361(6406),997-+. |
MLA | Johansson, K. O.,et al."Resonance-stabilized hydrocarbon-radical chain reactions may explain soot inception and growth".SCIENCE 361.6406(2018):997-+. |
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