Average structural analysis of the extractable material of young soot gathered in an ethylene inverse diffusion flame
Average structural analysis of the extractable material of young soot gathered in an ethylene inverse diffusion flame
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DOI：
10.1016/j.fuel.2006.12.002
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发表时间：
2007-08
期刊：
影响因子：
7.4
通讯作者：
A. Santamaría;F. Mondragón;Wiston Quiñónez;E. Eddings;A. Sarofim
中科院分区：
文献类型：
--
作者：
A. Santamaría;F. Mondragón;Wiston Quiñónez;E. Eddings;A. Sarofim
采用常规的分析方法，如1H NMR、蒸气压渗透压法（VPO）和元素分析，对乙烯反扩散火焰不同高度处聚集的烟炱的氯仿萃取组分所代表的烟炱前体物质的平均结构参数进行了表征。结果表明，在6mm高度处得到的碳烟可溶组分具有较大的分子量和较长的脂肪链，随着高度的增加，这些脂肪链逐渐消失，特别是在高温区（1200K）。这种行为还伴随着样品的芳香性（fa）的增加。
Conventional analytical methods such as1H NMR, vapor pressure osmometry (VPO) and elemental analysis were used to characterize the soot precursor material represented by the chloroform extractable fractions of the young soot gathered at different heights of an ethylene inverse diffusion flame in terms of average structural parameters. The results indicate that the soot soluble fraction obtained at a 6mm height has a relatively large molecular weight and has long aliphatic chains which later disappear with an increase in height above the burner base, especially in the region where the temperature is high (1200K). This behavior is also accompanied by an increase in the aromaticity (fa) of the samples.