The Effect of Temperature on Soot Properties in Premixed Ethylene Flames

被引：17

作者：

Apicella, B. ^{[1
]}

Tregrossi, A. ^{[1
]}

Ciajolo, A. ^{[1
]}

Abrahamson, J. ^{[2
,3
]}

Vander Wal, R. L. ^{[2
,3
]}

Russo, C. ^{[1
]}

机构：

[1] CNR, Ist Ric Combust, Piazzale Tecchio 80, I-80125 Naples, Italy

[2] Penn State Univ, EMS Energy Inst, University Pk, PA 16802 USA

[3] Penn State Univ, Leone Dept Energy & Mineral Engn, University Pk, PA 16802 USA

来源：

COMBUSTION SCIENCE AND TECHNOLOGY | 2019年 / 191卷 / 09期

关键词：

Soot; EELS; HRTEM; premixed flames; MOLECULAR-WEIGHT; METHANE; NANOSTRUCTURE; MICROSCOPY; COMPONENTS; OXIDATION; EVOLUTION; MATURITY;

D O I：

10.1080/00102202.2019.1566228

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Soot nanostructure was analyzed in fuel-rich premixed laminar C2H4/O-2 flames at a constant equivalence ratio of 2.4 and different maximum temperatures, namely, 1620 and 1690K, obtained using different cold gas velocities. Flame structure and bulk properties of soot as H/C ratio, reactivity and absorption coefficient were investigated, along with morphological, nanostructural, and chemical features (using TEM, HRTEM, EELS). It was found that dehydrogenation and aromatization of soot occurring along the flames are favored at the beginning of the flame in higher flame temperature conditions. Nevertheless, it was noticeable that soot reaches rather similar final nanostructure and bulk properties, independently on the temperature, at least in the 1620-1690K range investigated.

引用

页码：1558 / 1570

页数：13

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