A comparative study of methane and ethane flame chemistry by experiment and detailed modelling

Hennessy, Robin J.; Robinson, C.; Smith, Danielle

doi:10.1016/s0082-0784(88)80308-4

Cited by 13 publications

(13 citation statements)

References 21 publications

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“…Numerous MBMS studies exist on premixed laminar low-pressure flames fueled by methane [194][195][196][197][198][199][200] and the C 2 species acetylene [87,158,[201][202][203], ethylene [59,60,178,196,204,205], and ethane [198][199][200]206]. Pope and Miller [148] chose data from low-pressure flat flames fueled by acetylene [207], ethylene [60], and propene [208] to explore benzene formation pathways.…”

Section: Experimental and Modeling Flame Studies Of Benzene Formationmentioning

confidence: 99%

Recent contributions of flame-sampling molecular-beam mass spectrometry to a fundamental understanding of combustion chemistry

Hansen

Cool

Westmoreland

et al. 2009

Progress in Energy and Combustion Science

335

261

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a b s t r a c tFlame-sampling molecular-beam mass spectrometry of premixed, laminar, low-pressure flat flames has been demonstrated to be an efficient tool to study combustion chemistry. In this technique, flame gases are sampled through a small opening in a quartz probe, and after formation of a molecular beam, all flame species are separated using mass spectrometry. The present review focuses on critical aspects of the experimental approach including probe sampling effects, different ionization processes, and mass separation procedures. The capability for isomer-resolved flame species measurements, achievable by employing tunable vacuum-ultraviolet radiation for single-photon ionization, has greatly benefited flame-sampling molecular-beam mass spectrometry. This review also offers an overview of recent combustion chemistry studies of flames fueled by hydrocarbons and oxygenates. The identity of a variety of intermediates in hydrocarbon flames, including resonantly stabilized radicals and closed-shell intermediates, is described, thus establishing a more detailed understanding of the fundamentals of molecular-weight growth processes. Finally, molecular-beam mass-spectrometric studies of reaction paths in flames of alcohols, ethers, and esters, which have been performed to support the development and validation of kinetic models for bio-derived alternative fuels, are reviewed.

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Section: Experimental and Modeling Flame Studies Of Benzene Formationmentioning

confidence: 99%

Recent contributions of flame-sampling molecular-beam mass spectrometry to a fundamental understanding of combustion chemistry

Hansen

Cool

Westmoreland

et al. 2009

Progress in Energy and Combustion Science

335

261

View full text Add to dashboard Cite

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“…Both the high-temperature conversion important in combustion processes and the low-temperature chemistry relevant for direct conversion of methane to higher value products have received considerable attention. Oxidation of methane has been studied in static reactors [1][2][3], laboratory flow reactors [4][5][6][7][8][9][10][11][12], shock tubes [13][14][15][16][17][18][19][20][21][22][23][24][25], and laminar premixed flames [26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42]. However, experimental data obtained at high pressures are scarce.…”

Section: Introductionmentioning

confidence: 99%

Experimental measurements and kinetic modeling of CH₄/O₂ and CH₄/C₂H₆/O₂ conversion at high pressure

Rasmussen

Jakobsen

Glarborg

2008

Int J of Chemical Kinetics

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A detailed chemical kinetic model for homogeneous combustion of the light hydrocarbon fuels CH4 and C2H6 in the intermediate temperature range roughly 500–1100 K, and pressures up to 100 bar has been developed and validated experimentally. Rate constants have been obtained from critical evaluation of data for individual elementary reactions reported in the literature with particular emphasis on the conditions relevant to the present work. The experiments, involving CH4/O2 and CH4/C2H6/O2 mixtures diluted in N2, have been carried out in a high‐pressure flow reactor at 600–900 K, 50–100 bar, and reaction stoichiometries ranging from very lean to fuel‐rich conditions. Model predictions are generally satisfactory. The governing reaction mechanisms are outlined based on calculations with the kinetic model. Finally, the mechanism was extended with a number of reactions important at high temperature and tested against data from shock tubes, laminar flames, and flow reactors. © 2008 Wiley Periodicals, Inc. Int J Chem Kinet 40: 778–807, 2008

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“…As shown in Figure 7 which presents schematically the main C I, C 2 and C 3 oxidation pathways generallyproposed in a CH 4/OZIN2 flame (Tan et al, 1994b;Karra et al, 1988;Wamatz, 1981 andHennessy et al), an important production of CH 3 enhances the C 1 oxidation pathway CH 4~C H 3~C HzOH CO~CO~CO 2 , Because of the negligible increase of the C 2H6 concentration in the seeded flame, the methyl radicals recombination may occur mainly via the CH 3 +CH 3~CZH4 +H z reaction which is not negligible in low pressure methane / air and alkane / air flames (Wamatz. 1981 andHennessy et al, 1986;Crunelle et al, 1999).…”

Section: Resultsmentioning

confidence: 99%

“…1981 andHennessy et al, 1986;Crunelle et al, 1999). Thus as CzH s, CH 3 contributes to the enhancement of the C 2 oxidation pathway C 2H6~C2Hs~CZH4~C2H3~C2H 2~C H z.…”

Section: Resultsmentioning

confidence: 99%

Experimental and Kinetic Analysis of the Thermal Degradation of the Methylethylketone in Methane / Air Flames UMR CNRS 8522 “Physicochimie des Processus de Combustion”.

Gasnot

Decottignies

Turbiez

et al. 2000

Combustion Science and Technology

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The experimental study of the thermal degradation of methylethylketone (MEK) in flame conditions is undertaken to provide an experimental data base concerning Volatile Organic Compounds (VOCs) oxidation. The experimental set-up consists of the coupLing of microprobe sampling with gas chromatography and mass spectrometry analysis. Temperature measurements are realized by the coated thermocouple technique. The addition of MEK to a reference methane I air flame induces (I) an enhancement of the C 2 and C 3 hydrocarbon oxidation pathways which points out the main role of CH 3 and C 2Hs radicals, and (2) the formation of oxygenated intermediate compounds such aldehydes (CH 20, CH 3CHO. CH 3CH2CHO), alcohols (CH 30H, CH 3CH20H) and ketones (CH 3COCH3• CH3COCHCH2. CHjCH2COCH2CH3, CH 3COCH2CH2CH3). The peak mole fraction of these intermediate species increases with the amount of MEK added to the methane I air flame. The experimental results are discussed to point out the kinetic processes involved in the high temperature oxidation of MEK which may contribute to the development of a detailed chemical mechanism.

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A comparative study of methane and ethane flame chemistry by experiment and detailed modelling

Cited by 13 publications

References 21 publications

Recent contributions of flame-sampling molecular-beam mass spectrometry to a fundamental understanding of combustion chemistry

Recent contributions of flame-sampling molecular-beam mass spectrometry to a fundamental understanding of combustion chemistry

Experimental measurements and kinetic modeling of CH₄/O₂ and CH₄/C₂H₆/O₂ conversion at high pressure

Experimental and Kinetic Analysis of the Thermal Degradation of the Methylethylketone in Methane / Air Flames UMR CNRS 8522 “Physicochimie des Processus de Combustion”.

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A comparative study of methane and ethane flame chemistry by experiment and detailed modelling

Cited by 13 publications

References 21 publications

Recent contributions of flame-sampling molecular-beam mass spectrometry to a fundamental understanding of combustion chemistry

Recent contributions of flame-sampling molecular-beam mass spectrometry to a fundamental understanding of combustion chemistry

Experimental measurements and kinetic modeling of CH4/O2 and CH4/C2H6/O2 conversion at high pressure

Experimental and Kinetic Analysis of the Thermal Degradation of the Methylethylketone in Methane / Air Flames UMR CNRS 8522 “Physicochimie des Processus de Combustion”.

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Experimental measurements and kinetic modeling of CH₄/O₂ and CH₄/C₂H₆/O₂ conversion at high pressure