title: Combustion chemistry and flame structure of furan group biofuels using molecular-beam mass spectrometry and gas chromatography - Part III: 2,5-Dimethylfuran.
abstract: This work is the third part of a study focusing on the combustion chemistry and flame structure of furan and selected alkylated derivatives, i.e. furan in Part I, 2-methylfuran (MF) in Part II, and 2,5-dimethylfuran (DMF) in the present work. Two premixed low-pressure (20 and 40 mbar) flat argon-diluted (50%) flames of DMF were studied with electron-ionization molecular-beam mass spectrometry (EI-MBMS) and gas chromatography (GC) under two equivalence ratios (φ=1.0 and 1.7). Mole fractions of reactants, products, and stable and radical intermediates were measured as a function of the distance to the burner. Kinetic modeling was performed using a reaction mechanism that was further developed in the present series, including Part I and Part II. A reasonable agreement between the present experimental results and the simulation is observed. The main reaction pathways of DMF consumption were derived from a reaction flow analysis. Also, a comparison of the key features for the three flames is presented, as well as a comparison between these flames of furanic compounds and those of other fuels. An a priori surprising ability of DMF to form soot precursors (e.g. 1,3-cyclopentadiene or benzene) compared to less substituted furans and to other fuels has been experimentally observed and is well explained in the model.
authors: Department of Chemistry, Bielefeld University, Universitätsstraße 25, D-33615 Bielefeld, Germany.
authors: Casimir
authors: C
authors: Togbé
authors: Laboratoire Réactions et Génie des Procédés (LRGP), CNRS, Université de Lorraine, EN-SIC, 1 rue Grandville, BP 20451, 54001 Nancy Cedex, France.
authors: Luc-Sy
authors: LS
authors: Tran
authors: Department of Chemistry, Bielefeld University, Universitätsstraße 25, D-33615 Bielefeld, Germany.
authors: Dong
authors: D
authors: Liu
authors: Department of Chemistry, Bielefeld University, Universitätsstraße 25, D-33615 Bielefeld, Germany.
authors: Daniel
authors: D
authors: Felsmann
authors: Department of Chemistry, Bielefeld University, Universitätsstraße 25, D-33615 Bielefeld, Germany.
authors: Patrick
authors: P
authors: Oßwald
authors: Laboratoire Réactions et Génie des Procédés (LRGP), CNRS, Université de Lorraine, EN-SIC, 1 rue Grandville, BP 20451, 54001 Nancy Cedex, France.
authors: Pierre-Alexandre
authors: PA
authors: Glaude
authors: Laboratoire Réactions et Génie des Procédés (LRGP), CNRS, Université de Lorraine, EN-SIC, 1 rue Grandville, BP 20451, 54001 Nancy Cedex, France.
authors: Baptiste
authors: B
authors: Sirjean
authors: Laboratoire Réactions et Génie des Procédés (LRGP), CNRS, Université de Lorraine, EN-SIC, 1 rue Grandville, BP 20451, 54001 Nancy Cedex, France.
authors: René
authors: R
authors: Fournet
authors: Laboratoire Réactions et Génie des Procédés (LRGP), CNRS, Université de Lorraine, EN-SIC, 1 rue Grandville, BP 20451, 54001 Nancy Cedex, France.
authors: Frédérique
authors: F
authors: Battin-Leclerc
authors: Department of Chemistry, Bielefeld University, Universitätsstraße 25, D-33615 Bielefeld, Germany.
authors: Katharina
authors: K
authors: Kohse-Höinghaus
keywords: 2,5-dimethylfuran; gas chromatography; low-pressure flame; model; molecular-beam mass spectrometry; reaction flow analysis; reaction mechanism