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Article Dans Une Revue Combustion and Flame Année : 2023

Exploring low-temperature oxidation chemistry of 2- and 3-pentanone

Résumé

The low-temperature oxidation chemistry of 2-and 3-pentanone was investigated over a wide range of conditions using a jet-stirred reactor (JSR) and a rapid compression machine (RCM). The JSR oxidation experiment was performed at the pressure of 93.3 kPa over a temperature range of 600-1000 K. Detailed speciation information was obtained using synchrotron vacuum ultraviolet photoionization mass spectrometry. Ignition delay times (IDTs) of 2-and 3-pentanone were measured in an RCM from 640 to 820 K at pressures of 15 and 25 bar and an equivalence ratio of 1.0. The two C5 ketones showed NTC behavior and two-stage ignition phenomena. Mole fraction time histories of intermediate species during the two-stage ignition process of both ketones were obtained using a fast-sampling system coupled with gas chromatography. There are distinct differences between 2-and 3-pentanone in species concentration profiles and IDTs. A kinetic mechanism for the low-temperature oxidation of 2-and 3-pentanone was developed, which can satisfactorily predict all
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hal-04093744 , version 1 (10-05-2023)

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Shiqing Kang, Wanxiong Liao, Wenyu Sun, Keli Lin, Handong Liao, et al.. Exploring low-temperature oxidation chemistry of 2- and 3-pentanone. Combustion and Flame, inPress, 257, pp.112561. ⟨10.1016/j.combustflame.2022.112561⟩. ⟨hal-04093744⟩
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