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Rezgui Y, Guemini M. Benefits of n-butanol, as a biofuel, in reducing the levels of soot precursors issued from the combustion of benzene flames. KINETICS AND CATALYSIS 2016. [DOI: 10.1134/s0023158416060136] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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2
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Choe JC, Kim GS. An ab initioStudy of Excited States of C 4H 3Radical. B KOREAN CHEM SOC 2016. [DOI: 10.1002/bkcs.10990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Joong Chul Choe
- Department of Chemistry; Dongguk University; Seoul 04620 Korea
| | - Gap-Sue Kim
- Dharma College; Dongguk University; Seoul 04620 Korea
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Olm C, Varga T, Valkó É, Hartl S, Hasse C, Turányi T. Development of an Ethanol Combustion Mechanism Based on a Hierarchical Optimization Approach. INT J CHEM KINET 2016. [DOI: 10.1002/kin.20998] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Carsten Olm
- Institute of Chemistry; Eötvös University (ELTE); Budapest Hungary
- MTA-ELTE Research Group on Complex Chemical Systems; Budapest Hungary
- Numerical Thermo-Fluid Dynamics; TU Bergakademie, Freiberg; Germany
| | - Tamás Varga
- Institute of Chemistry; Eötvös University (ELTE); Budapest Hungary
- MTA-ELTE Research Group on Complex Chemical Systems; Budapest Hungary
| | - Éva Valkó
- Institute of Chemistry; Eötvös University (ELTE); Budapest Hungary
- MTA-ELTE Research Group on Complex Chemical Systems; Budapest Hungary
| | - Sandra Hartl
- Numerical Thermo-Fluid Dynamics; TU Bergakademie, Freiberg; Germany
| | - Christian Hasse
- Numerical Thermo-Fluid Dynamics; TU Bergakademie, Freiberg; Germany
| | - Tamás Turányi
- Institute of Chemistry; Eötvös University (ELTE); Budapest Hungary
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Rodriguez A, Frottier O, Herbinet O, Fournet R, Bounaceur R, Fittschen C, Battin-Leclerc F. Experimental and Modeling Investigation of the Low-Temperature Oxidation of Dimethyl Ether. J Phys Chem A 2015; 119:7905-23. [DOI: 10.1021/acs.jpca.5b01939] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anne Rodriguez
- Laboratoire
Réactions et Génie des Procédés, CNRS, Université de Lorraine, BP 20451, 1 rue Grandville, 54000 Nancy, France
| | - Ophélie Frottier
- Laboratoire
Réactions et Génie des Procédés, CNRS, Université de Lorraine, BP 20451, 1 rue Grandville, 54000 Nancy, France
| | - Olivier Herbinet
- Laboratoire
Réactions et Génie des Procédés, CNRS, Université de Lorraine, BP 20451, 1 rue Grandville, 54000 Nancy, France
| | - René Fournet
- Laboratoire
Réactions et Génie des Procédés, CNRS, Université de Lorraine, BP 20451, 1 rue Grandville, 54000 Nancy, France
| | - Roda Bounaceur
- Laboratoire
Réactions et Génie des Procédés, CNRS, Université de Lorraine, BP 20451, 1 rue Grandville, 54000 Nancy, France
| | - Christa Fittschen
- PhysicoChimie
des Processus de Combustion et de l’Atmosphère (PC2A) UMR 8522 CNRS/Lille 1, Université de Lille, Cité
scientifique, 59655 Villeneuve d’Ascq
Cedex, France
| | - Frédérique Battin-Leclerc
- Laboratoire
Réactions et Génie des Procédés, CNRS, Université de Lorraine, BP 20451, 1 rue Grandville, 54000 Nancy, France
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Boussid N, Rezgui Y. Effect of the n-butanol addition on cyclopentadienyl radical formation during benzene combustion. KINETICS AND CATALYSIS 2015. [DOI: 10.1134/s0023158415010048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Rezgui Y, Guemini M. Effect of ethanol addition on soot precursors emissions during benzene oxidation in a jet-stirred reactor. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:6671-6686. [PMID: 24510530 DOI: 10.1007/s11356-014-2582-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 01/21/2014] [Indexed: 06/03/2023]
Abstract
A constant volume reactor model (PSR) was used to investigate the effect of ethanol addition on the formation of some pollutants during benzene oxidation in a jet-stirred reactor. The blended fuels were formed by incrementally adding 4% wt of oxygen (ethanol) to the neat benzene fuel and by keeping the inert mole fraction (nitrogen) and the equivalence ratio constants. The main objective of this work was to obtain fundamental understanding of the mechanisms through which the oxygenate compound affects soot precursor amounts. The modeling results showed that C2H2, C5H5, and C3H3 mole fractions decreased upon increasing the ethanol percentage in the fuel mixture.
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Affiliation(s)
- Yacine Rezgui
- Laboratoire de Chimie Appliquée et Technologie des Matériaux, Université d'Oum El Bouaghi, B.P. 358, Route de Constantine, Oum El Bouaghi, 04000, Algeria,
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Trogolo D, Maranzana A, Ghigo G, Tonachini G. First Ring Formation by Radical Addition of Propargyl to But-1-ene-3-yne in Combustion. Theoretical Study of the C7H7 Radical System. J Phys Chem A 2014; 118:427-40. [DOI: 10.1021/jp4082905] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniela Trogolo
- Dipartimento di Chimica, Università di Torino, Corso Massimo
D’Azeglio 48, I-10125 Torino, Italy
| | - Andrea Maranzana
- Dipartimento di Chimica, Università di Torino, Corso Massimo
D’Azeglio 48, I-10125 Torino, Italy
| | - Giovanni Ghigo
- Dipartimento di Chimica, Università di Torino, Corso Massimo
D’Azeglio 48, I-10125 Torino, Italy
| | - Glauco Tonachini
- Dipartimento di Chimica, Università di Torino, Corso Massimo
D’Azeglio 48, I-10125 Torino, Italy
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Tran LS, Glaude PA, Fournet R, Battin-Leclerc F. EXPERIMENTAL AND MODELING STUDY OF PREMIXED LAMINAR FLAMES OF ETHANOL AND METHANE. ENERGY & FUELS : AN AMERICAN CHEMICAL SOCIETY JOURNAL 2013; 27:2226-2245. [PMID: 23712124 PMCID: PMC3663996 DOI: 10.1021/ef301628x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
To better understand the chemistry of the combustion of ethanol, the structure of five low pressure laminar premixed flames has been investigated: a pure methane flame (φ=1), three pure ethanol flames (φ=0.7, 1.0, and 1.3), and an ethanol/methane mixture flames (φ=1). The flames have been stabilized on a burner at a pressure of 6.7 kPa using argon as dilutant, with a gas velocity at the burner of 64.3 cm/s at 333 K. The results consist of mole fraction profiles of 20 species measured as a function of the height above the burner by probe sampling followed by online gas chromatography analyses. A mechanism for the oxidation of ethanol was proposed. The reactions of ethanol and acetaldehyde were updated and include recent theoretical calculations while that of ethenol, dimethyl ether, acetone, and propanal were added in the mechanism. This mechanism was also tested against experimental results available in the literature for laminar burning velocities and laminar premixed flame where ethenol was detected. The main reaction pathways of consumption of ethanol are analyzed. The effect of the branching ratios of reaction C2H5OH+OH→Products+H2O is also discussed.
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Affiliation(s)
- Luc-Sy Tran
- Laboratoire Réactions et Génie des Procédé, Université de Lorraine, CNRS, BP 20451, 1 rue Grandville, 54001 Nancy, France
| | - Pierre-Alexandre Glaude
- Laboratoire Réactions et Génie des Procédé, Université de Lorraine, CNRS, BP 20451, 1 rue Grandville, 54001 Nancy, France
| | - René Fournet
- Laboratoire Réactions et Génie des Procédé, Université de Lorraine, CNRS, BP 20451, 1 rue Grandville, 54001 Nancy, France
| | - Frédérique Battin-Leclerc
- Laboratoire Réactions et Génie des Procédé, Université de Lorraine, CNRS, BP 20451, 1 rue Grandville, 54001 Nancy, France
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Golea D, Rezgui Y, Guemini M, Hamdane S. Reduction of PAH and Soot Precursors in Benzene Flames by Addition of Ethanol. J Phys Chem A 2012; 116:3625-42. [DOI: 10.1021/jp211350f] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Djemaa Golea
- Laboratoire
de Chimie Appliquée et Technologie des Matériaux, Université d'Oum El Bouaghi, B.P. 358, Route
de Constantine, Oum El Bouaghi 04000, Algérie
| | - Yacine Rezgui
- Laboratoire
de Chimie Appliquée et Technologie des Matériaux, Université d'Oum El Bouaghi, B.P. 358, Route
de Constantine, Oum El Bouaghi 04000, Algérie
| | - Miloud Guemini
- Laboratoire
de Chimie Appliquée et Technologie des Matériaux, Université d'Oum El Bouaghi, B.P. 358, Route
de Constantine, Oum El Bouaghi 04000, Algérie
| | - Soumia Hamdane
- Laboratoire
de Chimie Appliquée et Technologie des Matériaux, Université d'Oum El Bouaghi, B.P. 358, Route
de Constantine, Oum El Bouaghi 04000, Algérie
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Lee C, Vranckx S, Heufer KA, Khomik SV, Uygun Y, Olivier H, Fernandez RX. On the Chemical Kinetics of Ethanol Oxidation: Shock Tube, Rapid Compression Machine and Detailed Modeling Study. ACTA ACUST UNITED AC 2011. [DOI: 10.1524/zpch.2012.0185] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
Auto-ignition characteristics of ethanol were experimentally investigated using two Shock Tube (ST) facilities and a Rapid Compression Machine (RCM). Ignition delay times for stoichiometric ethanol-air mixtures were measured for temperatures between 775–1300 K in a High Pressure Shock Tube (HPST) at pressures close to 80 bar by probing pressure time histories and CH* emission. In some experiments the HPST was additionally employed for schlieren imaging to visualize ignition behavior by probing density gradients during ignition for ethanol-air mixtures. The ignition delay experiments in HPST were complemented by RCM measurements for extending the temperature regime to the Low Temperature Combustion (LTC) regime, down to 705 K, providing kinetic model validation data over a very wide temperature and pressure range. The current results also extend the earlier shock tube measurements performed in the same laboratory for pressures around 40 bar for temperatures down to 800 K [Heufer et al., Shock Waves 20 (2010) 307]. Furthermore, a Rectangular Shock Tube (RST) was solely used for additional schlieren imaging experiments to acquire information on ignition modes in stoichiometric ethanol-air mixtures around 10 bar. An improved chemical kinetic model was developed based on the Li et al. mechanism [Li et al., “Ethanol Model v1.0”, Princeton University, 2009] which was updated with evaluated rate parameters from the literature and validated through results obtained from the aforementioned facilities. The model predictions were compared to previously published low-pressure, premixed flat flame molecular beam mass spectrometry speciation data [Kasper et al., Combust. Flame 150 (2007) 220; Wang et al., J. Phys. Chem. A 112 (2008) 9255] where reasonable agreement is obtained considering the uncertainties in experiments and model. However, the model provides excellent agreement for the auto-ignition results obtained in the RCM and the high temperature shock induced ignition delays. Significant disparities with the model predictions are obtained for the shock tube results at temperatures below 1000 K as it transitions from the intermediate to the low temperature regime. The reasons for these deviations are assigned to strong fuel specific “pre-ignition” effects observed in ethanol auto-ignition, in contrast to other investigated fuels, which was satisfactorily explained through schlieren experimental results. To our knowledge this work is first of its kind that combines results from complementary experimental methods from three different facilities providing a holistic description on the auto-ignition behavior of ethanol. Furthermore, this paper reports ignition delay measurements for ethanol in air, at the highest pressures applicable to practical combustors.
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Affiliation(s)
- Changyoul Lee
- RWTH Aachen, Physico-Chemical Fundamentals of Combustion, Aachen, Deutschland
| | - Stijn Vranckx
- RWTH Aachen, Physico-Chemical Fundamentals of Combustion, Aachen, Deutschland
| | | | | | - Yasar Uygun
- RWTH Aachen, Shock Wave Laboratory, Aachen, Deutschland
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Chen MW, Just GMP, Codd T, Miller TA. Spectroscopic studies of the ÖX̃ electronic spectrum of the β-hydroxyethylperoxy radical: Structure and dynamics. J Chem Phys 2011; 135:184304. [DOI: 10.1063/1.3656835] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Oßwald P, Kohse-Höinghaus K, Struckmeier U, Zeuch T, Seidel L, Leon L, Mauss F. Combustion Chemistry of the Butane Isomers in Premixed Low-Pressure Flames. ACTA ACUST UNITED AC 2011. [DOI: 10.1524/zpch.2011.0148] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
The combustion chemistry of the two butane isomers represents a subset in a comprehensive description of C1–C4 hydrocarbon and oxygenated fuels. A critical examination of combustion models and their capability to predict emissions from this class of fuels must rely on high-quality experimental data that address the respective chemical decomposition and oxidation pathways, including quantitative intermediate species mole fractions. Premixed flat low-pressure (40 mbar) flames of the two butane isomers were thus studied under identical, fuel-rich (φ=1.71) conditions. Two independent molecular-beam mass spectrometer (MBMS) set-ups were used to provide quantitative species profiles. Both data sets, one from electron ionization (EI)-MBMS with high mass resolution and one from photoionization (PI)-MBMS with high energy resolution, are in overall good agreement. Simulations with a flame model were used to analyze the respective reaction pathways, and differences in the combustion behavior of the two isomers are discussed.
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Affiliation(s)
| | | | - Ulf Struckmeier
- Thermo Fisher Scientific, Solaar House, Cambridge, CB5 8BZ, Großbritannien
| | - Thomas Zeuch
- Universität Göttingen, Institut für Physikalische Chemie, Göttingen, Deutschland
| | - Lars Seidel
- Brandenburg University of Technology, Thermodynamics and Thermal Process Engineering, Cottbus, Deutschland
| | - Larisa Leon
- Brandenburg University of Technology, Thermodynamics and Thermal Process Engineering, Cottbus, Deutschland
| | - Fabian Mauss
- Brandenburg University of Technology, Thermodynamics and Thermal Process Engineering, Cottbus, Deutschland
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Kohse-Höinghaus K, Osswald P, Cool TA, Kasper T, Hansen N, Qi F, Westbrook CK, Westmoreland PR. Biofuel combustion chemistry: from ethanol to biodiesel. Angew Chem Int Ed Engl 2010; 49:3572-97. [PMID: 20446278 DOI: 10.1002/anie.200905335] [Citation(s) in RCA: 230] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Biofuels, such as bio-ethanol, bio-butanol, and biodiesel, are of increasing interest as alternatives to petroleum-based transportation fuels because they offer the long-term promise of fuel-source regenerability and reduced climatic impact. Current discussions emphasize the processes to make such alternative fuels and fuel additives, the compatibility of these substances with current fuel-delivery infrastructure and engine performance, and the competition between biofuel and food production. However, the combustion chemistry of the compounds that constitute typical biofuels, including alcohols, ethers, and esters, has not received similar public attention. Herein we highlight some characteristic aspects of the chemical pathways in the combustion of prototypical representatives of potential biofuels. The discussion focuses on the decomposition and oxidation mechanisms and the formation of undesired, harmful, or toxic emissions, with an emphasis on transportation fuels. New insights into the vastly diverse and complex chemical reaction networks of biofuel combustion are enabled by recent experimental investigations and complementary combustion modeling. Understanding key elements of this chemistry is an important step towards the intelligent selection of next-generation alternative fuels.
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Kohse-Höinghaus K, Oßwald P, Cool T, Kasper T, Hansen N, Qi F, Westbrook C, Westmoreland P. Verbrennungschemie der Biokraftstoffe: von Ethanol bis Biodiesel. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200905335] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Struckmeier U, Oßwald P, Kasper T, Böhling L, Heusing M, Köhler M, Brockhinke A, Kohse-Höinghaus K. Sampling Probe Influences on Temperature and Species Concentrations in Molecular Beam Mass Spectroscopic Investigations of Flat Premixed Low-pressure Flames. ACTA ACUST UNITED AC 2009. [DOI: 10.1524/zpch.2009.6049] [Citation(s) in RCA: 129] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
New operating regimes for engines and combustors and the advocated use of non-conventional transportation fuels demand investigation of the combustion chemistry of different classes of chemicals, especially under premixed conditions. Detailed species compositions during combustion are needed to estimate hazardous emissions, and models for their prediction must be validated for the intended combustion conditions.Molecular-beam mass spectrometry (MBMS) is a common technique to measure quantitative species concentrations in flames. It is widely employed to characterize the flame chemistry of laminar premixed combustion, and it has been complemented with optical measurements for the detection of a number of molecular species and radicals. Significant progress has been made in recent studies through the introduction of synchrotron-based MBMS instruments. They have improved the identification process by using tunable vacuum-ultraviolet radiation for photoionization of the species to be detected, and isomer-specific measurements are now almost routinely possible. Along with quantitative species measurements, the temperature profile is needed as input parameter for chemical kinetic modeling. It is usually determined either using thermocouples or laser spectroscopic techniques.It is an ongoing discussion how sampling probes affect these measurements, and how MBMS results can be compared to combustion modeling. The present article is intended to contribute to this discussion by providing optical and MBMS results obtained with several sampling configurations.
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Wang J, Chaos M, Yang B, Cool TA, Dryer FL, Kasper T, Hansen N, Oßwald P, Kohse-Höinghaus K, Westmoreland PR. Composition of reaction intermediates for stoichiometric and fuel-rich dimethyl ether flames: flame-sampling mass spectrometry and modeling studies. Phys Chem Chem Phys 2009; 11:1328-39. [DOI: 10.1039/b815988b] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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