A pyrolysis study on C4–C8 symmetric ethers

Zeynep Serinyel (1) , Guillaume Dayma (1) , Valentin Glasziou (1) , Maxence Lailliau (1) , Philippe Dagaut (1)

1 ICARE - Institut de Combustion, Aérothermique, Réactivité et Environnement

Pyrolysis of diethyl (C 4), din -propyl (C 6), di-iso-propyl (C 6) and din -butyl (C 8) ethers were studied in a jet-stirred reactor between 720 and 1140 K, at 10 atm with an initial ether mole fraction of 0.1%. Major common pyrolysis products were observed to be CO, CH 4 , H 2 , and C 2 H 4. All ethers produced the n/2 alcohol and olefin as products of molecular reaction to a small extent. Under pyrolysis conditions at 10 atm, hydrogen abstraction reactions by H atoms and CH 3 radicals were found to be important. Acetylene and benzene were formed for all ethers when T > 1000 K. A kinetic mechanism is used to represent these results. This study shows that there is need of systematic studies in determining site specific rate constants of important fuel related reactions of ethers.

Mots clés: ethers; kinetics; jet-stirred reactor; pyrolysis; kinetic modeling; ethers

Domaines: Chimie théorique et/ou physique; Milieux fluides et réactifs

Zeynep Serinyel, Guillaume Dayma, Valentin Glasziou, Maxence Lailliau, Philippe Dagaut. A pyrolysis study on C4–C8 symmetric ethers. Proceedings of the Combustion Institute, 2021, 38 (1), pp.329-336. ⟨10.1016/j.proci.2020.06.261⟩. ⟨hal-03216672⟩