Towards a predictive kinetic model of 3-ethyltoluene: Evidence concerning fuel-specific intermediates in the flow reactor pyrolysis with insights into model implications
文献类型：期刊论文
| 作者 | Wang, Qianpeng; Yang, Mo; Wang, Juan; Yang, Jiuzhong; Zhao, Long; Li, Wang ; Wang, Changyang; Lu, Tenglong; Li YJ(李昱君)
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| 刊名 | PROCEEDINGS OF THE COMBUSTION INSTITUTE
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| 出版日期 | 2023 |
| 卷号 | 39期号:1页码:179-188 |
| ISSN号 | 1540-7489 |
| 关键词 | 3-Ethyltoluene High temperature pyrolysis Aromatics Kinetic modeling Methylbenzyl radical |
| DOI | 10.1016/j.proci.2022.07.150 |
| 英文摘要 | To reveal insights into high temperature kinetics of dialkylaromatics, a pyrolysis investigation of 3ethyltoluene in a flow reactor together with its reaction kinetics are presented in this work. Concentrations and chemical structures of specific species covering temperature range from 796 to 1383K at the pressure of 30 and 760 Torr were recorded and quantified by using synchrotron vacuum ultraviolet photoionization molecular-beam mass spectrometry (VUV-PI-MBMS). Important C 8 and C 9 fuel-specific intermediates relevant to primary decomposition of 3-ethyltoluene and isomerization of methylbenzyl and ethylbenzyl radicals were detected and identified. The kinetic model interpreting high temperature pyrolysis chemistry of 3-ethyltoluene was developed and reasonably predicted the measurements in this work. The model analyses reveal that the methyl-dissociated reaction from the ethyl group of 3-ethyltoluene is dominant in the fuel decomposition at low pressure, while the fuel is mainly consumed by hydrogen abstraction reactions at atmospheric pressure. The experimental observations of three methylbenzyl isomers, o -xylylene, p -xylylene, styrene and benzocyclobutene provide evidence for the relationships between products involving isomerization of methylbenzyl radicals, formation of xylylenes and decomposition of o -xylylene. The fuel structure effects of 3-ethyltoluene and m -xylene are revealed by comparing the pyrolysis behaviors in both cases. It has been found that the m -methylbenzyl-generating channel in the 3-ethyltoluene pyrolysis improved the reaction reactivity initially. Furthermore, the fuel with longer substituent ethyl group facilitates the formation of cycloalkenes and aromatics.& COPY; 2022 The Combustion Institute. Published by Elsevier Inc. All rights reserved. |
| 分类号 | 二类 |
| WOS研究方向 | Thermodynamics ; Energy & Fuels ; Engineering, Chemical ; Engineering, Mechanical |
| 语种 | 英语 |
| WOS记录号 | WOS:001015870400001 |
| 资助机构 | National Natural Science Foundation of China [U2032119, 71690245, 51706217] |
| 其他责任者 | Wang, J (corresponding author), Beihang Univ, Sch Energy & Power Engn, Natl Key Lab Sci & Technol Aeroengine Aerothermody, Beijing 100191, Peoples R China. ; Yang, JZ (corresponding author), Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Anhui, Peoples R China. |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/92432]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 作者单位 | 1.{Wang Qianpeng, Yang Mo, Wang Juan} Beihang Univ Sch Energy & Power Engn Natl Key Lab Sci & Technol Aeroengine Aerothermody Beijing 100191 Peoples R China 2.{Yang Jiuzhong, Zhao Long, Li Wang, Wang Changyang, Lu Tenglong} Univ Sci & Technol China Natl Synchrotron Radiat Lab Hefei 230029 Anhui Peoples R China 3.{Li Yujun} Chinese Acad Sci State Key Lab High Temp Gas Dynam Beijing 100190 Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Qianpeng,Yang, Mo,Wang, Juan,et al. Towards a predictive kinetic model of 3-ethyltoluene: Evidence concerning fuel-specific intermediates in the flow reactor pyrolysis with insights into model implications[J]. PROCEEDINGS OF THE COMBUSTION INSTITUTE,2023,39(1):179-188. |
| APA | Wang, Qianpeng.,Yang, Mo.,Wang, Juan.,Yang, Jiuzhong.,Zhao, Long.,...&李昱君.(2023).Towards a predictive kinetic model of 3-ethyltoluene: Evidence concerning fuel-specific intermediates in the flow reactor pyrolysis with insights into model implications.PROCEEDINGS OF THE COMBUSTION INSTITUTE,39(1),179-188. |
| MLA | Wang, Qianpeng,et al."Towards a predictive kinetic model of 3-ethyltoluene: Evidence concerning fuel-specific intermediates in the flow reactor pyrolysis with insights into model implications".PROCEEDINGS OF THE COMBUSTION INSTITUTE 39.1(2023):179-188. |
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来源：力学研究所
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