Pyrolysis study of dimethyl carbonate, diethyl carbonate, and ethyl methyl carbonate using shock-tube spectroscopic CO measurements and chemical kinetics investigation

被引：20
|
作者：
Gregoire, Claire M. [1 ]
Cooper, Sean P. [1 ]
Khan-Ghauri, Maryam [1 ]
Alturaifi, Sulaiman A. [1 ]
Petersen, Eric L. [1 ]
Mathieu, Olivier [1 ]
机构：
[1] Texas A&M Univ, J Mike Walker Dept Mech Engn 66, College Stn, TX 77843 USA
来源：
COMBUSTION AND FLAME | 2023年 / 249卷
基金：
美国国家科学基金会;
关键词：
Diethyl carbonate; Dimethyl carbonate; Ethyl methyl carbonate; Pyrolysis; CO laser measurements; IGNITION DELAY TIMES; THERMAL-DECOMPOSITION; GAS-PHASE; ELECTROLYTE; MECHANISMS; HISTORIES; METHANE; HYDROCARBONS; PERFORMANCE; PHOSPHATE;
D O I：
10.1016/j.combustflame.2022.112594
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The pyrolysis of three linear carbonates -dimethyl carbonate (DMC), diethyl carbonate (DEC), and ethyl methyl carbonate (EMC) -was investigated behind reflected shock waves using a CO spectroscopic laser diagnostic. The experiments were carried out using 0.0025 carbonate/0.2 He/0.7975 Ar mixtures with temperatures ranging from 1230 to 2375 K, and near atmospheric pressure. This CO quantification ex-tends the literature database for DEC and EMC and allowed for the development of a new detailed chem-ical kinetics pyrolysis mechanism encompassing all three linear carbonates. The new model was able to reproduce accurately the results for DMC and DEC, the latter being possible after some updates in the ethanol pyrolysis chemistry using recent literature. On the other hand, predicting CO formation for EMC is still problematic due to the poor methanol pyrolysis chemistry displayed by modern detailed kinetics mechanisms.Published by Elsevier Inc. on behalf of The Combustion Institute.
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页数：14
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