TY - JOUR
T1 - Experimental and kinetic modeling study of tetramethylethylenediamine
T2 - A promising green propellant fuel
AU - Wu, Yingtao
AU - Kong, Xiangdong
AU - Yu, Tao
AU - Mai, Zhaoming
AU - Cao, Shutong
AU - Yu, Qingwei
AU - Liang, Jinhu
AU - Nagaraja, Shashank S.
AU - Sarathy, S. Mani
AU - Huang, Zuohua
AU - Tang, Chenglong
N1 - Publisher Copyright:
© 2022 The Combustion Institute
PY - 2023/2
Y1 - 2023/2
N2 - Tetramethylethylenediamine (TMEDA) is a promising green propellant fuel and reactivity promoter. However, the reactions between TMEDA and O2 are usually overlooked under ignition conditions. In this study, significant low-temperature reactivity was observed for 2%TMEDA/O2 mixtures, and autoignition could occur even at 470 K. To probe the chemical kinetics of TMEDA/O2, ignition delay times were measured in a rapid compression machine and a high-pressure shock tube. TMEDA pyrolysis products were also obtained in a single pulse shock tube. The autoignition of TMEDA/O2 in rapid compression machine experiments showed multi-stage heat release, a characteristic which became more obvious at oxygen-lean conditions. During the oxidation experiments, a non-Arrhenius temperature dependence of ignition delay time was observed. A chemical kinetic model of TMEDA was developed hierarchically, based on current reaction kinetics knowledge about hydrocarbons, small amines and NOx. Ignition delay times and pyrolysis products measured in this study, along with experimental data on small amines from the literature, were used to validate the kinetic model, which generally produced good predictions across different temperature, pressure and equivalence ratio conditions.
AB - Tetramethylethylenediamine (TMEDA) is a promising green propellant fuel and reactivity promoter. However, the reactions between TMEDA and O2 are usually overlooked under ignition conditions. In this study, significant low-temperature reactivity was observed for 2%TMEDA/O2 mixtures, and autoignition could occur even at 470 K. To probe the chemical kinetics of TMEDA/O2, ignition delay times were measured in a rapid compression machine and a high-pressure shock tube. TMEDA pyrolysis products were also obtained in a single pulse shock tube. The autoignition of TMEDA/O2 in rapid compression machine experiments showed multi-stage heat release, a characteristic which became more obvious at oxygen-lean conditions. During the oxidation experiments, a non-Arrhenius temperature dependence of ignition delay time was observed. A chemical kinetic model of TMEDA was developed hierarchically, based on current reaction kinetics knowledge about hydrocarbons, small amines and NOx. Ignition delay times and pyrolysis products measured in this study, along with experimental data on small amines from the literature, were used to validate the kinetic model, which generally produced good predictions across different temperature, pressure and equivalence ratio conditions.
KW - Chemical kinetic model
KW - Ignition delay time
KW - Pyrolysis
KW - Tetramethylethylenediamine
UR - http://www.scopus.com/inward/record.url?scp=85144604471&partnerID=8YFLogxK
U2 - 10.1016/j.combustflame.2022.112584
DO - 10.1016/j.combustflame.2022.112584
M3 - Article
AN - SCOPUS:85144604471
SN - 0010-2180
VL - 248
JO - Combustion and Flame
JF - Combustion and Flame
M1 - 112584
ER -