Title :

2,5-Dimethyltetrahydrofuran combustion: Ignition delay times at high and low temperatures, speciation measurements and detailed kinetic modeling

Author(s) :

Fenard, Yann [Auteur]
Physicochimie des Processus de Combustion et de l'Atmosphère (PC2A) - UMR 8522
Song, Hwasup [Auteur]
Physicochimie des Processus de Combustion et de l’Atmosphère - UMR 8522 [PC2A]
Minwegen, Heiko [Auteur]
Parab, Prajakta [Auteur]
Sampaio Mergulhao, Carolina [Auteur]
Physicochimie des Processus de Combustion et de l'Atmosphère (PC2A) - UMR 8522
Vanhove, Guillaume [Auteur]
Physicochimie des Processus de Combustion et de l'Atmosphère (PC2A) - UMR 8522
Heufer, Karl-Alexander [Auteur]

Journal title :

Combustion and Flame

Abbreviated title :

Combustion and Flame

Volume number :

203

Pages :

341-351

Publication date :

2019-05

ISSN :

00102180

English abstract : [en]

Ignition delays of stoichiometric mixture of 2,5-dimethyltetrahydrofuran/O2/inert mixtures were measured at temperatures ranging from 650 to 1300 K in a RCM and in a shock tube. Operating pressures ranged from 10 to 40 bar ...
Show more >Ignition delays of stoichiometric mixture of 2,5-dimethyltetrahydrofuran/O2/inert mixtures were measured at temperatures ranging from 650 to 1300 K in a RCM and in a shock tube. Operating pressures ranged from 10 to 40 bar at higher temperature (ST) and 10–20 bar at lower temperatures (RCM). The ignition delay times exhibit a slight deviation from Arrhenius behavior, and limited low-temperature reactivity. This behavior is similar to other cyclic ethers studied in comparable conditions namely THF, 2-MTHF and 3-MTHF, where 2,5-dimethylterahydrofuran (2,5-DMTHF) is showing the lowest reactivity of this series of cyclic ethers. Detailed speciation and quantification of the intermediates formed by a stoichiometric 2,5-DMTHF/O2/N2 mixture in the combustion chamber of the RCM was performed at different times between top dead center and the ignition event for Tc = 712 K and pTDC = 10 bar. The major fuel specific species observed are 2,5-dimethylfuran, 2,6-dimethyl-1,3-diox-4-ene, hexa-2,5-dione, 1-(2-methylcyclopropyl)ethanone, and hex-3-en-2-one. To provide further insight into the kinetics of the oxidation of 2,5-DMTHF, a comprehensive kinetic model was developed and validated upon the acquired experimental data. Reaction pathway analysis and sensitivity analysis give an overview of the oxidation process of 2,5-DMTHF and elucidates the formation of the experimentally observed fuel-specific intermediates.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

CNRS
Université de Lille

Collections :

• Physicochimie des Processus de Combustion et de l'Atmosphère (PC2A) - UMR 8522

Submission date :

2021-12-08T09:51:25Z
2024-02-28T14:17:04Z