OH+HO_2反应速率常数的测量
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- 英文论文题名：Rate Constant Measurement of OH+HO_2 Reaction
- 论文作者：刘丰华 ; 董文锐
- 英文论文作者：Fenghua Liu ; Wenrui Dong ; Dalian Institute of Chemical Physics ; Chinese Academy of Sciences
- 年：2016
- 作者机构：中国科学院大连化学物理研究所;
- 论文关键词：速率常数测量 ; OH自由基 ; 燃烧反应动力学
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第四十六分会：燃烧化学
- 语种：中文
- 分类号：O643.1
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第四十六分会 ; 燃烧化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：138k
- 原文格式：D
- 会议级别：全国
摘要
对燃烧反应动力学的研究能够揭示燃烧反应过程中的本质规律,并进一步对于构建燃烧模型以及提升发动机基础燃烧研究水平有重要意义。在发动机相关的燃烧反应微观机制中,大分子碳氢燃料的反应机理是核心问题之一。氢气的氧化是大分子碳氢燃料的氧化过程的基础,OH+HO_2反应在氢气氧化反应模型中占有相当重要的地位,且在该模型中OH+HO_2反应的速率常数具有最大的不确定度。因此,对OH+HO_2反应的研究对我们深入理解大分子碳氢燃料反应机理有重要意义。我们的实验将运用高重复频率激光诱导荧光以及光腔衰荡光谱方法对OH及HO_2自由基的浓度进行测量,获得自由基浓度随时间变化的关系,进而获得上述反应的速率常数信息。通过与理论合作者的密切合作,构建更为精确的关于上述反应的动力学模型,进一步为发动机可控燃烧技术的发展提供理论支撑。
Research on combustion reaction kinetics is able to reveal the essential law of combustion reaction process. Reaction mechanism of large hydrocarbon fuel molecule plays a central role in the micro-mechanism of combustion reaction relevant to engine. H_2/O_2 combustion process is the basis of the combustion of large hydrocarbon fuel molecules. The OH+HO_2 reaction is the fundamental reaction in the H_2/O_2 combustion process. In the H_2/O_2 combustion model, the rate constant of OH+HO_2 reaction has the largest uncertainty. We will combine the high repetition rate laser induced fluorescence technique with cavity ring down method to monitor time dependent concentration of OH and HO_2 radicals, further obtain the rate constant of reaction mentioned above.
Research on combustion reaction kinetics is able to reveal the essential law of combustion reaction process. Reaction mechanism of large hydrocarbon fuel molecule plays a central role in the micro-mechanism of combustion reaction relevant to engine. H_2/O_2 combustion process is the basis of the combustion of large hydrocarbon fuel molecules. The OH+HO_2 reaction is the fundamental reaction in the H_2/O_2 combustion process. In the H_2/O_2 combustion model, the rate constant of OH+HO_2 reaction has the largest uncertainty. We will combine the high repetition rate laser induced fluorescence technique with cavity ring down method to monitor time dependent concentration of OH and HO_2 radicals, further obtain the rate constant of reaction mentioned above.
引文
[1]Sivaramakrishnan,R.;Comandini,A.;Tranter,R.S.;Brezinsky,K.;Davis,S.G.;Wang,H.P Combust Inst,31(2007)429-437.
[2]Chaos,M.;Dryer,F.L.Combust Sci Technol,180(2008)1053-1096.
[2]Chaos,M.;Dryer,F.L.Combust Sci Technol,180(2008)1053-1096.