A mid-infrared absorption diagnostic for acetylene detection
A mid-infrared absorption diagnostic for acetylene detection
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DOI：
10.1007/s00340-015-6125-x
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发表时间：
2015-08-01
影响因子：
2.1
通讯作者：
Farooq, Aamir
中科院分区：
文献类型：
--
作者：
Utsav, K. C.;Nasir, Ehson F.;Farooq, Aamir
乙炔是一种重要的燃烧中间产物，在碳烟形成中起着关键作用。痕量乙炔浓度的精确测量在验证烃氧化和烟灰形成机理方面非常有用。本文对乙炔在13.7 μ m附近的最强振动带进行了探测，以发展一种高灵敏度的吸收诊断方法。在反射激波后进行实验，测量乙炔在宽温度（1000-2200 K）和压力（1-5 bar）范围内的吸收截面（730 cm（-1））。通过测量丙烯在冲击加热热解和氧化过程中乙炔的形成来证明诊断。
Acetylene is an important combustion intermediate and plays a critical role in soot formation. Accurate measurements of trace concentrations of acetylene can be very useful in validating hydrocarbon oxidation and soot formation mechanisms. Strongest vibrational band of acetylene near 13.7 mu m is probed here to develop a highly sensitive absorption diagnostic. Experiments are carried out behind reflected shock waves to measure absorption cross sections of acetylene near 730 cm(-1) over a wide range of temperatures (1000-2200 K) and pressures (1-5 bar). The diagnostic is demonstrated by measuring acetylene formation during the shock-heated pyrolysis and oxidation of propene.