The effect of allene addition on the structure of a rich C2H2/O2/Ar flame☆
The effect of allene addition on the structure of a rich C2H2/O2/Ar flame☆
复制标题
丙二烯的添加对富C2H2/O2/Ar火焰结构的影响☆
DOI：
10.1016/0010-2180(95)00227-8
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发表时间：
1996
影响因子：
4.4
通讯作者：
J. Pauwels
中科院分区：
文献类型：
--
作者：
James A. Miller;J. Volponi;J. Pauwels
本文研究了在富氧（φ = 1.67）C_2H_2/O_2/Ar火焰中加入丙二烯（C_3H_4）的影响。用热电偶和OH激光诱导荧光法测量温度。使用石英微探针从质谱仪测量确定稳定物种分布，并且使用LIF确定OH和CH浓度。实验进行了分析与援助的化学动力学模型。我们的实验中最值得注意的结果是，显着量的苯出现在火焰与联烯，而没有检测到的苯在纯乙炔火焰。这一结果支持了两个炔丙基自由基之间的反应是火焰中重要的“环化步骤”的理论。火焰化学的各个方面进行了深入的讨论。
We have studied the effects of adding allene (C3H4) to a rich (φ = 1.67) C2H2/O2/Ar flame. Temperatures were measured by thermocouple and by OH laser-induced fluorescence. Stable species profiles were determined from mass spectrometer measurements using a quartz microprobe, and OH and CH concentrations were determined using LIF. The experiments were analyzed with the aid of a chemical kinetic model. The most noteworthy result of our experiments is that significant quantities of benzene appear in the flame with allene, whereas there is no detectable benzene in the pure acetylene flame. This result lends support to the theory that the reaction between two propargyl radicals is an important “cyclization step” in flames. Various aspects of the flame chemistry are discussed in depth.