Quantitative measurements of formaldehyde in the low-temperature oxidation of iso-octane using mid-infrared absorption spectroscopy
Quantitative measurements of formaldehyde in the low-temperature oxidation of iso-octane using mid-infrared absorption spectroscopy
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DOI：
10.1007/s00340-019-7304-y
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发表时间：
2019-10-01
影响因子：
2.1
通讯作者：
Konno, Mitsuru
中科院分区：
文献类型：
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作者：
Tanaka, Kotaro;Sugano, Shinya;Konno, Mitsuru
采用中红外激光吸收光谱法对异辛烷低温氧化过程中甲醛（HCHO）进行了时间分辨定量测量。由于异辛烷的宽带吸收干扰较弱，采用双色检测方案对HCHO进行检测。在温度450 ~ 737k，压力100 ~ 700kpa的条件下，采用快速压缩机测量了两种颜色的HCHO和异辛烷的截面。在0.77 MPa、645 K、等价比为1.0条件下，获得了异辛烷低温氧化时的时间分辨定量HCHO谱图。采用最新的异辛烷化学动力学模型计算的HCHO曲线与实验曲线具有相同的趋势。
Time-resolved quantitative measurements of formaldehyde (HCHO) in the low-temperature oxidation of iso-octane using a rapid compression machine have been performed with mid-infrared laser absorption spectroscopy. Due to the weak interference of the broadband absorption of iso-octane, a two-color detection scheme was applied to HCHO detection. The cross-sections of HCHO and iso-octane in two colors were measured using the rapid compression machine in the temperature range of 450-737 K and pressure range of 100-700 kPa. The time-resolved quantitative HCHO profiles in the low-temperature oxidation of iso-octane at 0.77 MPa, 645 K, and an equivalence ratio of 1.0 were successfully obtained. The calculated HCHO profiles using the latest chemical kinetic model of iso-octane show the same tendency as the experimental profiles.