Experimental Study of Tetrahydrofuran Oxidation and Ignition in Low-Temperature Conditions - Université de Lorraine
Journal Articles Energy & Fuels Year : 2015

Experimental Study of Tetrahydrofuran Oxidation and Ignition in Low-Temperature Conditions

Abstract

The chemistry associated with low-temperature oxidation and ignition of tetrahydrofuran (THF) has been probed through experimental work in two distinct devices: a rapid compression machine (RCM) and a jet-stirred reactor (JSR). Ignition delays of stoichiometric THF/O-2/inert mixtures have been measured for pressures ranging from 0.5 to 1.0 MPa and core gas temperatures from 640 to 900 K. Two-stage ignition is visible up to 810 K, and the evolution of the ignition delay with the temperature shows a clear deviation from Arrhenius behavior between 680 and 750 K. Sampling of the reactive mixture during the ignition delay provided evidence of the formation of C-1-C-4 aldehydes and alkenes, a variety of oxygenated heterocycles, including oxirane, methyloxirane, oxetane, furan, both isomers of dihydrofuran, and 1,4-dioxene, as well as cyclopropanecarboxaldehyde and formic acid-2-propenyl ester. JSR experiments have been performed under pressure close to 1 atm, at temperatures from 500 to 1000 K, and at equivalence ratios from 0.5 to 2, with detailed analysis of the low-temperature intermediate products. Major products include carbon monoxide, carbon dioxide, C-1-C-2 hydrocarbons, and aldehydes, 1-butene, ethylene oxide, methylvinylether, acrolein, propanal, both isomers of dihydrofuran, furan, 2-butenal, cyclopropanecarboxaldehyde, 1,4-dioxene, and unsaturated dihydrofuranols. The obtained mole fraction profiles indicate a significant low-temperature reactivity of THF beginning at temperatures around 550 K, with a marked negative temperature coefficient zone. The results from both experimental devices are put in perspective and allow for the identification of the major formation pathways of the observed species.
No file

Dates and versions

hal-01266247 , version 1 (02-02-2016)

Identifiers

Cite

Guillaume Vanhove, Yi Yu, Mohamed A. Boumehdi, Ophélie Frottier, Olivier Herbinet, et al.. Experimental Study of Tetrahydrofuran Oxidation and Ignition in Low-Temperature Conditions. Energy & Fuels, 2015, 29 (9), pp.6118-6125. ⟨10.1021/acs.energyfuels.5b01057⟩. ⟨hal-01266247⟩
105 View
0 Download

Altmetric

Share

More