Impacts of hydrogen addition on micro and nanostructure of soot particles formed in C2H4/air counter diffusion flames

被引：29

作者：

Choi, Jae-Hyuk ^{[1
]}

Hwang, Cheol-Hong ^{[2
]}

Choi, Sang Kyu ^{[3
]}

Lee, Sang Min ^{[3
]}

Lee, Won Ju ^{[4
]}

Jang, Se Hyun ^{[5
]}

Park, Seul-Hyun ^{[6
]}

机构：

[1] Korea Maritime & Ocean Univ, Div Marine Syst Engn, Busan 606791, South Korea

[2] Daejeon Univ, Dept Fire & Disaster Prevent, Daejeon 300716, South Korea

[3] KIMM, Environm & Energy Syst Res Div, Daejeon 305343, South Korea

[4] Korea Inst Maritime & Fisheries Technol, Busan 49111, South Korea

[5] Korea Maritime & Ocean Univ, Grad Sch, Busan 606791, South Korea

[6] Chosun Univ, Dept Mech Syst Engn, Gwangju 501759, South Korea

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2016年 / 41卷 / 35期

关键词：

Laminar counter diffusion flame; Hydrogen addition; Soot nanostructure; Soot microstructure; Polycyclic aromatic hydrocarbon (PAH); LAMINAR; MORPHOLOGY; ACETYLENE;

D O I：

10.1016/j.ijhydene.2016.04.158

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In the present study, the impacts of hydrogen addition on micro and nanostructures of soot particles were evaluated in an ethylene-air counter diffusion flame configuration. To quantitatively interpret the impacts of hydrogen addition to the counter diffusion flame, the hydrogen was added in the fuel stream and its content (in volume %) was gradually increased up to 25%. Soot particles formed within hydrogen added flames were then sampled and imaged using a high resolution transmission electron microscopy (HRTEM) to visualize their micro and nanostructures. In addition, a series of numerical investigations were also performed to build a bridge between molecular gas phase species and the soot micro and nanostructures. Adding the hydrogen to the fuel stream was found to decrease the size of soot microstructures and enhance the formation of fullerenic nanostructures defined as highly curved carbon lamella. The abundance of hydrogen in the flames deactivated the surface site of soot particles, leading to reductions in the size of soot microstructures. Also the hydrogen addition was found to be related to the increased formation of PAHs containing 5-membered rings that helps to develop the curvatures in the carbon lamella. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：15852 / 15858

页数：7

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